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Merge branch 'linus' into x86/urgent 

Merge reason: Merge upstream commits to avoid conflicts in upcoming patches.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2011-03-18 10:38:53 +01:00
parent 1eda75c131 016aa2ed1c
commit 8dd8997d2c
549 changed files with 21085 additions and 13382 deletions
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31
Documentation/RCU/whatisRCU.txt
View File

@ -849,6 +849,37 @@ All: lockdep-checked RCU-protected pointer access
See the comment headers in the source code (or the docbook generated
from them) for more information.
However, given that there are no fewer than four families of RCU APIs
in the Linux kernel, how do you choose which one to use? The following
list can be helpful:
a. Will readers need to block? If so, you need SRCU.
b. What about the -rt patchset? If readers would need to block
in an non-rt kernel, you need SRCU. If readers would block
in a -rt kernel, but not in a non-rt kernel, SRCU is not
necessary.
c. Do you need to treat NMI handlers, hardirq handlers,
and code segments with preemption disabled (whether
via preempt_disable(), local_irq_save(), local_bh_disable(),
or some other mechanism) as if they were explicit RCU readers?
If so, you need RCU-sched.
d. Do you need RCU grace periods to complete even in the face
of softirq monopolization of one or more of the CPUs? For
example, is your code subject to network-based denial-of-service
attacks? If so, you need RCU-bh.
e. Is your workload too update-intensive for normal use of
RCU, but inappropriate for other synchronization mechanisms?
If so, consider SLAB_DESTROY_BY_RCU. But please be careful!
f. Otherwise, use RCU.
Of course, this all assumes that you have determined that RCU is in fact
the right tool for your job.
8. ANSWERS TO QUICK QUIZZES

93
Documentation/devicetree/bindings/i2c/ce4100-i2c.txt Normal file
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@ -0,0 +1,93 @@
CE4100 I2C
----------
CE4100 has one PCI device which is described as the I2C-Controller. This
PCI device has three PCI-bars, each bar contains a complete I2C
controller. So we have a total of three independent I2C-Controllers
which share only an interrupt line.
The driver is probed via the PCI-ID and is gathering the information of
attached devices from the devices tree.
Grant Likely recommended to use the ranges property to map the PCI-Bar
number to its physical address and to use this to find the child nodes
of the specific I2C controller. This were his exact words:
Here's where the magic happens. Each entry in
ranges describes how the parent pci address space
(middle group of 3) is translated to the local
address space (first group of 2) and the size of
each range (last cell). In this particular case,
the first cell of the local address is chosen to be
1:1 mapped to the BARs, and the second is the
offset from be base of the BAR (which would be
non-zero if you had 2 or more devices mapped off
the same BAR)
ranges allows the address mapping to be described
in a way that the OS can interpret without
requiring custom device driver code.
This is an example which is used on FalconFalls:
------------------------------------------------
i2c-controller@b,2 {
#address-cells = <2>;
#size-cells = <1>;
compatible = "pci8086,2e68.2",
"pci8086,2e68",
"pciclass,ff0000",
"pciclass,ff00";
reg = <0x15a00 0x0 0x0 0x0 0x0>;
interrupts = <16 1>;
/* as described by Grant, the first number in the group of
* three is the bar number followed by the 64bit bar address
* followed by size of the mapping. The bar address
* requires also a valid translation in parents ranges
* property.
*/
ranges = <0 0 0x02000000 0 0xdffe0500 0x100
1 0 0x02000000 0 0xdffe0600 0x100
2 0 0x02000000 0 0xdffe0700 0x100>;
i2c@0 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "intel,ce4100-i2c-controller";
/* The first number in the reg property is the
* number of the bar
*/
reg = <0 0 0x100>;
/* This I2C controller has no devices */
};
i2c@1 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "intel,ce4100-i2c-controller";
reg = <1 0 0x100>;
/* This I2C controller has one gpio controller */
gpio@26 {
#gpio-cells = <2>;
compatible = "ti,pcf8575";
reg = <0x26>;
gpio-controller;
};
};
i2c@2 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "intel,ce4100-i2c-controller";
reg = <2 0 0x100>;
gpio@26 {
#gpio-cells = <2>;
compatible = "ti,pcf8575";
reg = <0x26>;
gpio-controller;
};
};
};

28
Documentation/devicetree/bindings/rtc/rtc-cmos.txt Normal file
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@ -0,0 +1,28 @@
Motorola mc146818 compatible RTC
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Required properties:
- compatible : "motorola,mc146818"
- reg : should contain registers location and length.
Optional properties:
- interrupts : should contain interrupt.
- interrupt-parent : interrupt source phandle.
- ctrl-reg : Contains the initial value of the control register also
called "Register B".
- freq-reg : Contains the initial value of the frequency register also
called "Regsiter A".
"Register A" and "B" are usually initialized by the firmware (BIOS for
instance). If this is not done, it can be performed by the driver.
ISA Example:
rtc@70 {
compatible = "motorola,mc146818";
interrupts = <8 3>;
interrupt-parent = <&ioapic1>;
ctrl-reg = <2>;
freq-reg = <0x26>;
reg = <1 0x70 2>;
};

38
Documentation/devicetree/bindings/x86/ce4100.txt Normal file
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@ -0,0 +1,38 @@
CE4100 Device Tree Bindings
---------------------------
The CE4100 SoC uses for in core peripherals the following compatible
format: <vendor>,<chip>-<device>.
Many of the "generic" devices like HPET or IO APIC have the ce4100
name in their compatible property because they first appeared in this
SoC.
The CPU node
------------
cpu@0 {
device_type = "cpu";
compatible = "intel,ce4100";
reg = <0>;
lapic = <&lapic0>;
};
The reg property describes the CPU number. The lapic property points to
the local APIC timer.
The SoC node
------------
This node describes the in-core peripherals. Required property:
compatible = "intel,ce4100-cp";
The PCI node
------------
This node describes the PCI bus on the SoC. Its property should be
compatible = "intel,ce4100-pci", "pci";
If the OS is using the IO-APIC for interrupt routing then the reported
interrupt numbers for devices is no longer true. In order to obtain the
correct interrupt number, the child node which represents the device has
to contain the interrupt property. Besides the interrupt property it has
to contain at least the reg property containing the PCI bus address and
compatible property according to "PCI Bus Binding Revision 2.1".

26
Documentation/devicetree/bindings/x86/interrupt.txt Normal file
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@ -0,0 +1,26 @@
Interrupt chips
---------------
* Intel I/O Advanced Programmable Interrupt Controller (IO APIC)
Required properties:
--------------------
compatible = "intel,ce4100-ioapic";
#interrupt-cells = <2>;
Device's interrupt property:
interrupts = <P S>;
The first number (P) represents the interrupt pin which is wired to the
IO APIC. The second number (S) represents the sense of interrupt which
should be configured and can be one of:
0 - Edge Rising
1 - Level Low
2 - Level High
3 - Edge Falling
* Local APIC
Required property:
compatible = "intel,ce4100-lapic";

6
Documentation/devicetree/bindings/x86/timer.txt Normal file
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@ -0,0 +1,6 @@
Timers
------
* High Precision Event Timer (HPET)
Required property:
compatible = "intel,ce4100-hpet";

20
Documentation/devicetree/booting-without-of.txt
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@ -13,6 +13,7 @@ Table of Contents
I - Introduction
1) Entry point for arch/powerpc
2) Entry point for arch/x86
II - The DT block format
1) Header
@ -225,6 +226,25 @@ it with special cases.
cannot support both configurations with Book E and configurations
with classic Powerpc architectures.
2) Entry point for arch/x86
-------------------------------
There is one single 32bit entry point to the kernel at code32_start,
the decompressor (the real mode entry point goes to the same 32bit
entry point once it switched into protected mode). That entry point
supports one calling convention which is documented in
Documentation/x86/boot.txt
The physical pointer to the device-tree block (defined in chapter II)
is passed via setup_data which requires at least boot protocol 2.09.
The type filed is defined as
#define SETUP_DTB 2
This device-tree is used as an extension to the "boot page". As such it
does not parse / consider data which is already covered by the boot
page. This includes memory size, reserved ranges, command line arguments
or initrd address. It simply holds information which can not be retrieved
otherwise like interrupt routing or a list of devices behind an I2C bus.
II - The DT block format
========================

4
Documentation/kernel-parameters.txt
View File

@ -2444,6 +2444,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
<deci-seconds>: poll all this frequency
0: no polling (default)
threadirqs [KNL]
Force threading of all interrupt handlers except those
marked explicitely IRQF_NO_THREAD.
topology= [S390]
Format: {off | on}
Specify if the kernel should make use of the cpu

58
Documentation/memory-barriers.txt
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@ -21,6 +21,7 @@ Contents:
- SMP barrier pairing.
- Examples of memory barrier sequences.
- Read memory barriers vs load speculation.
- Transitivity
(*) Explicit kernel barriers.
@ -959,6 +960,63 @@ the speculation will be cancelled and the value reloaded:
retrieved : : +-------+
TRANSITIVITY
------------
Transitivity is a deeply intuitive notion about ordering that is not
always provided by real computer systems. The following example
demonstrates transitivity (also called "cumulativity"):
CPU 1 CPU 2 CPU 3
======================= ======================= =======================
{ X = 0, Y = 0 }
STORE X=1 LOAD X STORE Y=1
<general barrier> <general barrier>
LOAD Y LOAD X
Suppose that CPU 2's load from X returns 1 and its load from Y returns 0.
This indicates that CPU 2's load from X in some sense follows CPU 1's
store to X and that CPU 2's load from Y in some sense preceded CPU 3's
store to Y. The question is then "Can CPU 3's load from X return 0?"
Because CPU 2's load from X in some sense came after CPU 1's store, it
is natural to expect that CPU 3's load from X must therefore return 1.
This expectation is an example of transitivity: if a load executing on
CPU A follows a load from the same variable executing on CPU B, then
CPU A's load must either return the same value that CPU B's load did,
or must return some later value.
In the Linux kernel, use of general memory barriers guarantees
transitivity. Therefore, in the above example, if CPU 2's load from X
returns 1 and its load from Y returns 0, then CPU 3's load from X must
also return 1.
However, transitivity is -not- guaranteed for read or write barriers.
For example, suppose that CPU 2's general barrier in the above example
is changed to a read barrier as shown below:
CPU 1 CPU 2 CPU 3
======================= ======================= =======================
{ X = 0, Y = 0 }
STORE X=1 LOAD X STORE Y=1
<read barrier> <general barrier>
LOAD Y LOAD X
This substitution destroys transitivity: in this example, it is perfectly
legal for CPU 2's load from X to return 1, its load from Y to return 0,
and CPU 3's load from X to return 0.
The key point is that although CPU 2's read barrier orders its pair
of loads, it does not guarantee to order CPU 1's store. Therefore, if
this example runs on a system where CPUs 1 and 2 share a store buffer
or a level of cache, CPU 2 might have early access to CPU 1's writes.
General barriers are therefore required to ensure that all CPUs agree
on the combined order of CPU 1's and CPU 2's accesses.
To reiterate, if your code requires transitivity, use general barriers
throughout.
========================
EXPLICIT KERNEL BARRIERS
========================

29
Documentation/rtc.txt
View File

@ -178,38 +178,29 @@ RTC class framework, but can't be supported by the older driver.
setting the longer alarm time and enabling its IRQ using a single
request (using the same model as EFI firmware).
* RTC_UIE_ON, RTC_UIE_OFF ... if the RTC offers IRQs, it probably
also offers update IRQs whenever the "seconds" counter changes.
If needed, the RTC framework can emulate this mechanism.
* RTC_UIE_ON, RTC_UIE_OFF ... if the RTC offers IRQs, the RTC framework
will emulate this mechanism.
* RTC_PIE_ON, RTC_PIE_OFF, RTC_IRQP_SET, RTC_IRQP_READ ... another
feature often accessible with an IRQ line is a periodic IRQ, issued
at settable frequencies (usually 2^N Hz).
* RTC_PIE_ON, RTC_PIE_OFF, RTC_IRQP_SET, RTC_IRQP_READ ... these icotls
are emulated via a kernel hrtimer.
In many cases, the RTC alarm can be a system wake event, used to force
Linux out of a low power sleep state (or hibernation) back to a fully
operational state. For example, a system could enter a deep power saving
state until it's time to execute some scheduled tasks.
Note that many of these ioctls need not actually be implemented by your
driver. The common rtc-dev interface handles many of these nicely if your
driver returns ENOIOCTLCMD. Some common examples:
Note that many of these ioctls are handled by the common rtc-dev interface.
Some common examples:
* RTC_RD_TIME, RTC_SET_TIME: the read_time/set_time functions will be
called with appropriate values.
* RTC_ALM_SET, RTC_ALM_READ, RTC_WKALM_SET, RTC_WKALM_RD: the
set_alarm/read_alarm functions will be called.
* RTC_ALM_SET, RTC_ALM_READ, RTC_WKALM_SET, RTC_WKALM_RD: gets or sets
the alarm rtc_timer. May call the set_alarm driver function.
* RTC_IRQP_SET, RTC_IRQP_READ: the irq_set_freq function will be called
to set the frequency while the framework will handle the read for you
since the frequency is stored in the irq_freq member of the rtc_device
structure. Your driver needs to initialize the irq_freq member during
init. Make sure you check the requested frequency is in range of your
hardware in the irq_set_freq function. If it isn't, return -EINVAL. If
you cannot actually change the frequency, do not define irq_set_freq.
* RTC_IRQP_SET, RTC_IRQP_READ: These are emulated by the generic code.
* RTC_PIE_ON, RTC_PIE_OFF: the irq_set_state function will be called.
* RTC_PIE_ON, RTC_PIE_OFF: These are also emulated by the generic code.
If all else fails, check out the rtc-test.c driver!

24
Documentation/spinlocks.txt
View File

@ -86,7 +86,7 @@ to change the variables it has to get an exclusive write lock.
The routines look the same as above:
rwlock_t xxx_lock = RW_LOCK_UNLOCKED;
rwlock_t xxx_lock = __RW_LOCK_UNLOCKED(xxx_lock);
unsigned long flags;
@ -196,25 +196,3 @@ appropriate:
For static initialization, use DEFINE_SPINLOCK() / DEFINE_RWLOCK() or
__SPIN_LOCK_UNLOCKED() / __RW_LOCK_UNLOCKED() as appropriate.
SPIN_LOCK_UNLOCKED and RW_LOCK_UNLOCKED are deprecated. These interfere
with lockdep state tracking.
Most of the time, you can simply turn:
static spinlock_t xxx_lock = SPIN_LOCK_UNLOCKED;
into:
static DEFINE_SPINLOCK(xxx_lock);
Static structure member variables go from:
struct foo bar {
.lock = SPIN_LOCK_UNLOCKED;
};
to:
struct foo bar {
.lock = __SPIN_LOCK_UNLOCKED(bar.lock);
};
Declaration of static rw_locks undergo a similar transformation.

7
Documentation/trace/ftrace-design.txt
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@ -247,6 +247,13 @@ You need very few things to get the syscalls tracing in an arch.
- Support the TIF_SYSCALL_TRACEPOINT thread flags.
- Put the trace_sys_enter() and trace_sys_exit() tracepoints calls from ptrace
in the ptrace syscalls tracing path.
- If the system call table on this arch is more complicated than a simple array
of addresses of the system calls, implement an arch_syscall_addr to return
the address of a given system call.
- If the symbol names of the system calls do not match the function names on
this arch, define ARCH_HAS_SYSCALL_MATCH_SYM_NAME in asm/ftrace.h and
implement arch_syscall_match_sym_name with the appropriate logic to return
true if the function name corresponds with the symbol name.
- Tag this arch as HAVE_SYSCALL_TRACEPOINTS.

151
Documentation/trace/ftrace.txt
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@ -80,11 +80,11 @@ of ftrace. Here is a list of some of the key files:
tracers listed here can be configured by
echoing their name into current_tracer.
tracing_enabled:
tracing_on:
This sets or displays whether the current_tracer
is activated and tracing or not. Echo 0 into this
file to disable the tracer or 1 to enable it.
This sets or displays whether writing to the trace
ring buffer is enabled. Echo 0 into this file to disable
the tracer or 1 to enable it.
trace:
@ -202,10 +202,6 @@ Here is the list of current tracers that may be configured.
to draw a graph of function calls similar to C code
source.
"sched_switch"
Traces the context switches and wakeups between tasks.
"irqsoff"
Traces the areas that disable interrupts and saves
@ -273,39 +269,6 @@ format, the function name that was traced "path_put" and the
parent function that called this function "path_walk". The
timestamp is the time at which the function was entered.
The sched_switch tracer also includes tracing of task wakeups
and context switches.
ksoftirqd/1-7 [01] 1453.070013: 7:115:R + 2916:115:S
ksoftirqd/1-7 [01] 1453.070013: 7:115:R + 10:115:S
ksoftirqd/1-7 [01] 1453.070013: 7:115:R ==> 10:115:R
events/1-10 [01] 1453.070013: 10:115:S ==> 2916:115:R
kondemand/1-2916 [01] 1453.070013: 2916:115:S ==> 7:115:R
ksoftirqd/1-7 [01] 1453.070013: 7:115:S ==> 0:140:R
Wake ups are represented by a "+" and the context switches are
shown as "==>". The format is:
Context switches:
Previous task Next Task
<pid>:<prio>:<state> ==> <pid>:<prio>:<state>
Wake ups:
Current task Task waking up
<pid>:<prio>:<state> + <pid>:<prio>:<state>
The prio is the internal kernel priority, which is the inverse
of the priority that is usually displayed by user-space tools.
Zero represents the highest priority (99). Prio 100 starts the
"nice" priorities with 100 being equal to nice -20 and 139 being
nice 19. The prio "140" is reserved for the idle task which is
the lowest priority thread (pid 0).
Latency trace format
--------------------
@ -491,78 +454,10 @@ x494] <- /root/a.out[+0x4a8] <- /lib/libc-2.7.so[+0x1e1a6]
latencies, as described in "Latency
trace format".
sched_switch
------------
This tracer simply records schedule switches. Here is an example
of how to use it.
# echo sched_switch > current_tracer
# echo 1 > tracing_enabled
# sleep 1
# echo 0 > tracing_enabled
# cat trace
# tracer: sched_switch
#
# TASK-PID CPU# TIMESTAMP FUNCTION
# | | | | |
bash-3997 [01] 240.132281: 3997:120:R + 4055:120:R
bash-3997 [01] 240.132284: 3997:120:R ==> 4055:120:R
sleep-4055 [01] 240.132371: 4055:120:S ==> 3997:120:R
bash-3997 [01] 240.132454: 3997:120:R + 4055:120:S
bash-3997 [01] 240.132457: 3997:120:R ==> 4055:120:R
sleep-4055 [01] 240.132460: 4055:120:D ==> 3997:120:R
bash-3997 [01] 240.132463: 3997:120:R + 4055:120:D
bash-3997 [01] 240.132465: 3997:120:R ==> 4055:120:R
<idle>-0 [00] 240.132589: 0:140:R + 4:115:S
<idle>-0 [00] 240.132591: 0:140:R ==> 4:115:R
ksoftirqd/0-4 [00] 240.132595: 4:115:S ==> 0:140:R
<idle>-0 [00] 240.132598: 0:140:R + 4:115:S
<idle>-0 [00] 240.132599: 0:140:R ==> 4:115:R
ksoftirqd/0-4 [00] 240.132603: 4:115:S ==> 0:140:R
sleep-4055 [01] 240.133058: 4055:120:S ==> 3997:120:R
[...]
As we have discussed previously about this format, the header
shows the name of the trace and points to the options. The
"FUNCTION" is a misnomer since here it represents the wake ups
and context switches.
The sched_switch file only lists the wake ups (represented with
'+') and context switches ('==>') with the previous task or
current task first followed by the next task or task waking up.
The format for both of these is PID:KERNEL-PRIO:TASK-STATE.
Remember that the KERNEL-PRIO is the inverse of the actual
priority with zero (0) being the highest priority and the nice
values starting at 100 (nice -20). Below is a quick chart to map
the kernel priority to user land priorities.
Kernel Space User Space
===============================================================
0(high) to 98(low) user RT priority 99(high) to 1(low)
with SCHED_RR or SCHED_FIFO
---------------------------------------------------------------
99 sched_priority is not used in scheduling
decisions(it must be specified as 0)
---------------------------------------------------------------
100(high) to 139(low) user nice -20(high) to 19(low)
---------------------------------------------------------------
140 idle task priority
---------------------------------------------------------------
The task states are:
R - running : wants to run, may not actually be running
S - sleep : process is waiting to be woken up (handles signals)
D - disk sleep (uninterruptible sleep) : process must be woken up
(ignores signals)
T - stopped : process suspended
t - traced : process is being traced (with something like gdb)
Z - zombie : process waiting to be cleaned up
X - unknown
overwrite - This controls what happens when the trace buffer is
full. If "1" (default), the oldest events are
discarded and overwritten. If "0", then the newest
events are discarded.
ftrace_enabled
--------------
@ -607,10 +502,10 @@ an example:
# echo irqsoff > current_tracer
# echo latency-format > trace_options
# echo 0 > tracing_max_latency
# echo 1 > tracing_enabled
# echo 1 > tracing_on
# ls -ltr
[...]
# echo 0 > tracing_enabled
# echo 0 > tracing_on
# cat trace
# tracer: irqsoff
#
@ -715,10 +610,10 @@ is much like the irqsoff tracer.
# echo preemptoff > current_tracer
# echo latency-format > trace_options
# echo 0 > tracing_max_latency
# echo 1 > tracing_enabled
# echo 1 > tracing_on
# ls -ltr
[...]
# echo 0 > tracing_enabled
# echo 0 > tracing_on
# cat trace
# tracer: preemptoff
#
@ -863,10 +758,10 @@ tracers.
# echo preemptirqsoff > current_tracer
# echo latency-format > trace_options
# echo 0 > tracing_max_latency
# echo 1 > tracing_enabled
# echo 1 > tracing_on
# ls -ltr
[...]
# echo 0 > tracing_enabled
# echo 0 > tracing_on
# cat trace
# tracer: preemptirqsoff
#
@ -1026,9 +921,9 @@ Instead of performing an 'ls', we will run 'sleep 1' under
# echo wakeup > current_tracer
# echo latency-format > trace_options
# echo 0 > tracing_max_latency
# echo 1 > tracing_enabled
# echo 1 > tracing_on
# chrt -f 5 sleep 1
# echo 0 > tracing_enabled
# echo 0 > tracing_on
# cat trace
# tracer: wakeup
#
@ -1140,9 +1035,9 @@ ftrace_enabled is set; otherwise this tracer is a nop.
# sysctl kernel.ftrace_enabled=1
# echo function > current_tracer
# echo 1 > tracing_enabled
# echo 1 > tracing_on
# usleep 1
# echo 0 > tracing_enabled
# echo 0 > tracing_on
# cat trace
# tracer: function
#
@ -1180,7 +1075,7 @@ int trace_fd;
[...]
int main(int argc, char *argv[]) {
[...]
trace_fd = open(tracing_file("tracing_enabled"), O_WRONLY);
trace_fd = open(tracing_file("tracing_on"), O_WRONLY);
[...]
if (condition_hit()) {
write(trace_fd, "0", 1);
@ -1631,9 +1526,9 @@ If I am only interested in sys_nanosleep and hrtimer_interrupt:
# echo sys_nanosleep hrtimer_interrupt \
> set_ftrace_filter
# echo function > current_tracer
# echo 1 > tracing_enabled
# echo 1 > tracing_on
# usleep 1
# echo 0 > tracing_enabled
# echo 0 > tracing_on
# cat trace
# tracer: ftrace
#
@ -1879,9 +1774,9 @@ different. The trace is live.
# echo function > current_tracer
# cat trace_pipe > /tmp/trace.out &
[1] 4153
# echo 1 > tracing_enabled
# echo 1 > tracing_on
# usleep 1
# echo 0 > tracing_enabled
# echo 0 > tracing_on
# cat trace
# tracer: function
#

16
Documentation/trace/kprobetrace.txt
View File

@ -42,11 +42,25 @@ Synopsis of kprobe_events
+|-offs(FETCHARG) : Fetch memory at FETCHARG +|- offs address.(**)
NAME=FETCHARG : Set NAME as the argument name of FETCHARG.
FETCHARG:TYPE : Set TYPE as the type of FETCHARG. Currently, basic types
(u8/u16/u32/u64/s8/s16/s32/s64) and string are supported.
(u8/u16/u32/u64/s8/s16/s32/s64), "string" and bitfield
are supported.
(*) only for return probe.
(**) this is useful for fetching a field of data structures.
Types
-----
Several types are supported for fetch-args. Kprobe tracer will access memory
by given type. Prefix 's' and 'u' means those types are signed and unsigned
respectively. Traced arguments are shown in decimal (signed) or hex (unsigned).
String type is a special type, which fetches a "null-terminated" string from
kernel space. This means it will fail and store NULL if the string container
has been paged out.
Bitfield is another special type, which takes 3 parameters, bit-width, bit-
offset, and container-size (usually 32). The syntax is;
b<bit-width>@<bit-offset>/<container-size>
Per-Probe Event Filtering
-------------------------

2
arch/alpha/include/asm/fcntl.h
View File

@ -31,6 +31,8 @@
#define __O_SYNC 020000000
#define O_SYNC (__O_SYNC|O_DSYNC)
#define O_PATH 040000000
#define F_GETLK 7
#define F_SETLK 8
#define F_SETLKW 9

29
arch/alpha/include/asm/futex.h
View File

@ -29,7 +29,7 @@
: "r" (uaddr), "r"(oparg) \
: "memory")
static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
static inline int futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@ -39,7 +39,7 @@ static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
pagefault_disable();
@ -81,21 +81,23 @@ static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
}
static inline int
futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
int prev, cmp;
int ret = 0, cmp;
u32 prev;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
__asm__ __volatile__ (
__ASM_SMP_MB
"1: ldl_l %0,0(%2)\n"
" cmpeq %0,%3,%1\n"
" beq %1,3f\n"
" mov %4,%1\n"
"2: stl_c %1,0(%2)\n"
" beq %1,4f\n"
"1: ldl_l %1,0(%3)\n"
" cmpeq %1,%4,%2\n"
" beq %2,3f\n"
" mov %5,%2\n"
"2: stl_c %2,0(%3)\n"
" beq %2,4f\n"
"3: .subsection 2\n"
"4: br 1b\n"
" .previous\n"
@ -105,11 +107,12 @@ futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
" .long 2b-.\n"
" lda $31,3b-2b(%0)\n"
" .previous\n"
: "=&r"(prev), "=&r"(cmp)
: "+r"(ret), "=&r"(prev), "=&r"(cmp)
: "r"(uaddr), "r"((long)oldval), "r"(newval)
: "memory");
return prev;
*uval = prev;
return ret;
}
#endif /* __KERNEL__ */

36
arch/alpha/include/asm/rwsem.h
View File

@ -13,44 +13,13 @@
#ifdef __KERNEL__
#include <linux/compiler.h>
#include <linux/list.h>
#include <linux/spinlock.h>
struct rwsem_waiter;
extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *);
extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
/*
* the semaphore definition
*/
struct rw_semaphore {
long count;
#define RWSEM_UNLOCKED_VALUE 0x0000000000000000L
#define RWSEM_ACTIVE_BIAS 0x0000000000000001L
#define RWSEM_ACTIVE_MASK 0x00000000ffffffffL
#define RWSEM_WAITING_BIAS (-0x0000000100000000L)
#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
spinlock_t wait_lock;
struct list_head wait_list;
};
#define __RWSEM_INITIALIZER(name) \
{ RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, \
LIST_HEAD_INIT((name).wait_list) }
#define DECLARE_RWSEM(name) \
struct rw_semaphore name = __RWSEM_INITIALIZER(name)
static inline void init_rwsem(struct rw_semaphore *sem)
{
sem->count = RWSEM_UNLOCKED_VALUE;
spin_lock_init(&sem->wait_lock);
INIT_LIST_HEAD(&sem->wait_list);
}
static inline void __down_read(struct rw_semaphore *sem)
{
@ -250,10 +219,5 @@ static inline long rwsem_atomic_update(long val, struct rw_semaphore *sem)
#endif
}
static inline int rwsem_is_locked(struct rw_semaphore *sem)
{
return (sem->count != 0);
}
#endif /* __KERNEL__ */
#endif /* _ALPHA_RWSEM_H */

36
arch/alpha/kernel/osf_sys.c
View File

@ -230,44 +230,24 @@ linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_st
return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0;
}
static int
do_osf_statfs(struct path *path, struct osf_statfs __user *buffer,
unsigned long bufsiz)
SYSCALL_DEFINE3(osf_statfs, const char __user *, pathname,
struct osf_statfs __user *, buffer, unsigned long, bufsiz)
{
struct kstatfs linux_stat;
int error = vfs_statfs(path, &linux_stat);
int error = user_statfs(pathname, &linux_stat);
if (!error)
error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
return error;
}
SYSCALL_DEFINE3(osf_statfs, const char __user *, pathname,
struct osf_statfs __user *, buffer, unsigned long, bufsiz)
{
struct path path;
int retval;
retval = user_path(pathname, &path);
if (!retval) {
retval = do_osf_statfs(&path, buffer, bufsiz);
path_put(&path);
}
return retval;
}
SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd,
struct osf_statfs __user *, buffer, unsigned long, bufsiz)
{
struct file *file;
int retval;
retval = -EBADF;
file = fget(fd);
if (file) {
retval = do_osf_statfs(&file->f_path, buffer, bufsiz);
fput(file);
}
return retval;
struct kstatfs linux_stat;
int error = fd_statfs(fd, &linux_stat);
if (!error)
error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
return error;
}
/*

8
arch/alpha/kernel/time.c
View File

@ -159,7 +159,7 @@ void read_persistent_clock(struct timespec *ts)
/*
* timer_interrupt() needs to keep up the real-time clock,
* as well as call the "do_timer()" routine every clocktick
* as well as call the "xtime_update()" routine every clocktick
*/
irqreturn_t timer_interrupt(int irq, void *dev)
{
@ -172,8 +172,6 @@ irqreturn_t timer_interrupt(int irq, void *dev)
profile_tick(CPU_PROFILING);
#endif
write_seqlock(&xtime_lock);
/*
* Calculate how many ticks have passed since the last update,
* including any previous partial leftover. Save any resulting
@ -187,9 +185,7 @@ irqreturn_t timer_interrupt(int irq, void *dev)
nticks = delta >> FIX_SHIFT;
if (nticks)
do_timer(nticks);
write_sequnlock(&xtime_lock);
xtime_update(nticks);
if (test_irq_work_pending()) {
clear_irq_work_pending();

29
arch/arm/include/asm/futex.h
View File

@ -35,7 +35,7 @@
: "cc", "memory")
static inline int
futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@ -46,7 +46,7 @@ futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
pagefault_disable(); /* implies preempt_disable() */
@ -88,36 +88,35 @@ futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
}
static inline int
futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
int val;
int ret = 0;
u32 val;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
pagefault_disable(); /* implies preempt_disable() */
__asm__ __volatile__("@futex_atomic_cmpxchg_inatomic\n"
"1: " T(ldr) " %0, [%3]\n"
" teq %0, %1\n"
"1: " T(ldr) " %1, [%4]\n"
" teq %1, %2\n"
" it eq @ explicit IT needed for the 2b label\n"
"2: " T(streq) " %2, [%3]\n"
"2: " T(streq) " %3, [%4]\n"
"3:\n"
" .pushsection __ex_table,\"a\"\n"
" .align 3\n"
" .long 1b, 4f, 2b, 4f\n"
" .popsection\n"
" .pushsection .fixup,\"ax\"\n"
"4: mov %0, %4\n"
"4: mov %0, %5\n"
" b 3b\n"
" .popsection"
: "=&r" (val)
: "+r" (ret), "=&r" (val)
: "r" (oldval), "r" (newval), "r" (uaddr), "Ir" (-EFAULT)
: "cc", "memory");
pagefault_enable(); /* subsumes preempt_enable() */
return val;
*uval = val;
return ret;
}
#endif /* !SMP */

4
arch/arm/kernel/time.c
View File

@ -107,9 +107,7 @@ void timer_tick(void)
{
profile_tick(CPU_PROFILING);
do_leds();
write_seqlock(&xtime_lock);
do_timer(1);
write_sequnlock(&xtime_lock);
xtime_update(1);
#ifndef CONFIG_SMP
update_process_times(user_mode(get_irq_regs()));
#endif

2
arch/arm/mach-clps711x/include/mach/time.h
View File

@ -30,7 +30,7 @@ p720t_timer_interrupt(int irq, void *dev_id)
{
struct pt_regs *regs = get_irq_regs();
do_leds();
do_timer(1);
xtime_update(1);
#ifndef CONFIG_SMP
update_process_times(user_mode(regs));
#endif

6
arch/blackfin/kernel/time.c
View File

@ -114,16 +114,14 @@ u32 arch_gettimeoffset(void)
/*
* timer_interrupt() needs to keep up the real-time clock,
* as well as call the "do_timer()" routine every clocktick
* as well as call the "xtime_update()" routine every clocktick
*/
#ifdef CONFIG_CORE_TIMER_IRQ_L1
__attribute__((l1_text))
#endif
irqreturn_t timer_interrupt(int irq, void *dummy)
{
write_seqlock(&xtime_lock);
do_timer(1);
write_sequnlock(&xtime_lock);
xtime_update(1);
#ifdef CONFIG_IPIPE
update_root_process_times(get_irq_regs());

4
arch/cris/arch-v10/kernel/time.c
View File

@ -140,7 +140,7 @@ stop_watchdog(void)
/*
* timer_interrupt() needs to keep up the real-time clock,
* as well as call the "do_timer()" routine every clocktick
* as well as call the "xtime_update()" routine every clocktick
*/
//static unsigned short myjiff; /* used by our debug routine print_timestamp */
@ -176,7 +176,7 @@ timer_interrupt(int irq, void *dev_id)
/* call the real timer interrupt handler */
do_timer(1);
xtime_update(1);
cris_do_profile(regs); /* Save profiling information */
return IRQ_HANDLED;

4
arch/cris/arch-v32/kernel/smp.c
View File

@ -26,7 +26,9 @@
#define FLUSH_ALL (void*)0xffffffff
/* Vector of locks used for various atomic operations */
spinlock_t cris_atomic_locks[] = { [0 ... LOCK_COUNT - 1] = SPIN_LOCK_UNLOCKED};
spinlock_t cris_atomic_locks[] = {
[0 ... LOCK_COUNT - 1] = __SPIN_LOCK_UNLOCKED(cris_atomic_locks)
};
/* CPU masks */
cpumask_t phys_cpu_present_map = CPU_MASK_NONE;

6
arch/cris/arch-v32/kernel/time.c
View File

@ -183,7 +183,7 @@ void handle_watchdog_bite(struct pt_regs *regs)
/*
* timer_interrupt() needs to keep up the real-time clock,
* as well as call the "do_timer()" routine every clocktick.
* as well as call the "xtime_update()" routine every clocktick.
*/
extern void cris_do_profile(struct pt_regs *regs);
@ -216,9 +216,7 @@ static inline irqreturn_t timer_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
/* Call the real timer interrupt handler */
write_seqlock(&xtime_lock);
do_timer(1);
write_sequnlock(&xtime_lock);
xtime_update(1);
return IRQ_HANDLED;
}

5
arch/frv/include/asm/futex.h
View File

@ -7,10 +7,11 @@
#include <asm/errno.h>
#include <asm/uaccess.h>
extern int futex_atomic_op_inuser(int encoded_op, int __user *uaddr);
extern int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr);
static inline int
futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
return -ENOSYS;
}

14
arch/frv/kernel/futex.c
View File

@ -18,7 +18,7 @@
* the various futex operations; MMU fault checking is ignored under no-MMU
* conditions
*/
static inline int atomic_futex_op_xchg_set(int oparg, int __user *uaddr, int *_oldval)
static inline int atomic_futex_op_xchg_set(int oparg, u32 __user *uaddr, int *_oldval)
{
int oldval, ret;
@ -50,7 +50,7 @@ static inline int atomic_futex_op_xchg_set(int oparg, int __user *uaddr, int *_o
return ret;
}
static inline int atomic_futex_op_xchg_add(int oparg, int __user *uaddr, int *_oldval)
static inline int atomic_futex_op_xchg_add(int oparg, u32 __user *uaddr, int *_oldval)
{
int oldval, ret;
@ -83,7 +83,7 @@ static inline int atomic_futex_op_xchg_add(int oparg, int __user *uaddr, int *_o
return ret;
}
static inline int atomic_futex_op_xchg_or(int oparg, int __user *uaddr, int *_oldval)
static inline int atomic_futex_op_xchg_or(int oparg, u32 __user *uaddr, int *_oldval)
{
int oldval, ret;
@ -116,7 +116,7 @@ static inline int atomic_futex_op_xchg_or(int oparg, int __user *uaddr, int *_ol
return ret;
}
static inline int atomic_futex_op_xchg_and(int oparg, int __user *uaddr, int *_oldval)
static inline int atomic_futex_op_xchg_and(int oparg, u32 __user *uaddr, int *_oldval)
{
int oldval, ret;
@ -149,7 +149,7 @@ static inline int atomic_futex_op_xchg_and(int oparg, int __user *uaddr, int *_o
return ret;
}
static inline int atomic_futex_op_xchg_xor(int oparg, int __user *uaddr, int *_oldval)
static inline int atomic_futex_op_xchg_xor(int oparg, u32 __user *uaddr, int *_oldval)
{
int oldval, ret;
@ -186,7 +186,7 @@ static inline int atomic_futex_op_xchg_xor(int oparg, int __user *uaddr, int *_o
/*
* do the futex operations
*/
int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@ -197,7 +197,7 @@ int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
pagefault_disable();

14
arch/frv/kernel/time.c
View File

@ -50,21 +50,13 @@ static struct irqaction timer_irq = {
/*
* timer_interrupt() needs to keep up the real-time clock,
* as well as call the "do_timer()" routine every clocktick
* as well as call the "xtime_update()" routine every clocktick
*/
static irqreturn_t timer_interrupt(int irq, void *dummy)
{
profile_tick(CPU_PROFILING);
/*
* Here we are in the timer irq handler. We just have irqs locally
* disabled but we don't know if the timer_bh is running on the other
* CPU. We need to avoid to SMP race with it. NOTE: we don't need
* the irq version of write_lock because as just said we have irq
* locally disabled. -arca
*/
write_seqlock(&xtime_lock);
do_timer(1);
xtime_update(1);
#ifdef CONFIG_HEARTBEAT
static unsigned short n;
@ -72,8 +64,6 @@ static irqreturn_t timer_interrupt(int irq, void *dummy)
__set_LEDS(n);
#endif /* CONFIG_HEARTBEAT */
write_sequnlock(&xtime_lock);
update_process_times(user_mode(get_irq_regs()));
return IRQ_HANDLED;

4
arch/h8300/kernel/time.c
View File

@ -35,9 +35,7 @@ void h8300_timer_tick(void)
{
if (current->pid)
profile_tick(CPU_PROFILING);
write_seqlock(&xtime_lock);
do_timer(1);
write_sequnlock(&xtime_lock);
xtime_update(1);
update_process_times(user_mode(get_irq_regs()));
}

2
arch/h8300/kernel/timer/timer8.c
View File

@ -61,7 +61,7 @@
/*
* timer_interrupt() needs to keep up the real-time clock,
* as well as call the "do_timer()" routine every clocktick
* as well as call the "xtime_update()" routine every clocktick
*/
static irqreturn_t timer_interrupt(int irq, void *dev_id)

15
arch/ia64/include/asm/futex.h
View File

@ -46,7 +46,7 @@ do { \
} while (0)
static inline int
futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@ -56,7 +56,7 @@ futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
if (! access_ok (VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
pagefault_disable();
@ -100,23 +100,26 @@ futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
}
static inline int
futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
{
register unsigned long r8 __asm ("r8");
register unsigned long r8 __asm ("r8") = 0;
unsigned long prev;
__asm__ __volatile__(
" mf;; \n"
" mov ar.ccv=%3;; \n"
"[1:] cmpxchg4.acq %0=[%1],%2,ar.ccv \n"
" .xdata4 \"__ex_table\", 1b-., 2f-. \n"
"[2:]"
: "=r" (r8)
: "=r" (prev)
: "r" (uaddr), "r" (newval),
"rO" ((long) (unsigned) oldval)
: "memory");
*uval = prev;
return r8;
}
}

37
arch/ia64/include/asm/rwsem.h
View File

@ -25,20 +25,8 @@
#error "Please don't include <asm/rwsem.h> directly, use <linux/rwsem.h> instead."
#endif
#include <linux/list.h>
#include <linux/spinlock.h>
#include <asm/intrinsics.h>
/*
* the semaphore definition
*/
struct rw_semaphore {
signed long count;
spinlock_t wait_lock;
struct list_head wait_list;
};
#define RWSEM_UNLOCKED_VALUE __IA64_UL_CONST(0x0000000000000000)
#define RWSEM_ACTIVE_BIAS (1L)
#define RWSEM_ACTIVE_MASK (0xffffffffL)
@ -46,26 +34,6 @@ struct rw_semaphore {
#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
#define __RWSEM_INITIALIZER(name) \
{ RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED((name).wait_lock), \
LIST_HEAD_INIT((name).wait_list) }
#define DECLARE_RWSEM(name) \
struct rw_semaphore name = __RWSEM_INITIALIZER(name)
extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
static inline void
init_rwsem (struct rw_semaphore *sem)
{
sem->count = RWSEM_UNLOCKED_VALUE;
spin_lock_init(&sem->wait_lock);
INIT_LIST_HEAD(&sem->wait_list);
}
/*
* lock for reading
*/
@ -174,9 +142,4 @@ __downgrade_write (struct rw_semaphore *sem)
#define rwsem_atomic_add(delta, sem) atomic64_add(delta, (atomic64_t *)(&(sem)->count))
#define rwsem_atomic_update(delta, sem) atomic64_add_return(delta, (atomic64_t *)(&(sem)->count))
static inline int rwsem_is_locked(struct rw_semaphore *sem)
{
return (sem->count != 0);
}
#endif /* _ASM_IA64_RWSEM_H */

2
arch/ia64/include/asm/xen/hypercall.h
View File

@ -107,7 +107,7 @@ extern unsigned long __hypercall(unsigned long a1, unsigned long a2,
static inline int
xencomm_arch_hypercall_sched_op(int cmd, struct xencomm_handle *arg)
{
return _hypercall2(int, sched_op_new, cmd, arg);
return _hypercall2(int, sched_op, cmd, arg);
}
static inline long

17
arch/ia64/kernel/time.c
View File

@ -190,18 +190,9 @@ timer_interrupt (int irq, void *dev_id)
new_itm += local_cpu_data->itm_delta;
if (smp_processor_id() == time_keeper_id) {
/*
* Here we are in the timer irq handler. We have irqs locally
* disabled, but we don't know if the timer_bh is running on
* another CPU. We need to avoid to SMP race by acquiring the
* xtime_lock.
*/
write_seqlock(&xtime_lock);
do_timer(1);
local_cpu_data->itm_next = new_itm;
write_sequnlock(&xtime_lock);
} else
if (smp_processor_id() == time_keeper_id)
xtime_update(1);
local_cpu_data->itm_next = new_itm;
if (time_after(new_itm, ia64_get_itc()))
@ -222,7 +213,7 @@ skip_process_time_accounting:
* comfort, we increase the safety margin by
* intentionally dropping the next tick(s). We do NOT
* update itm.next because that would force us to call
* do_timer() which in turn would let our clock run
* xtime_update() which in turn would let our clock run
* too fast (with the potentially devastating effect
* of losing monotony of time).
*/

11
arch/ia64/xen/suspend.c
View File

@ -37,19 +37,14 @@ xen_mm_unpin_all(void)
/* nothing */
}
void xen_pre_device_suspend(void)
void
xen_arch_pre_suspend()
{
/* nothing */
}
void
xen_pre_suspend()
{
/* nothing */
}
void
xen_post_suspend(int suspend_cancelled)
xen_arch_post_suspend(int suspend_cancelled)
{
if (suspend_cancelled)
return;

11
arch/ia64/xen/time.c
View File

@ -139,14 +139,11 @@ consider_steal_time(unsigned long new_itm)
run_posix_cpu_timers(p);
delta_itm += local_cpu_data->itm_delta * (stolen + blocked);
if (cpu == time_keeper_id) {
write_seqlock(&xtime_lock);
do_timer(stolen + blocked);
if (cpu == time_keeper_id)
xtime_update(stolen + blocked);
local_cpu_data->itm_next = delta_itm + new_itm;
write_sequnlock(&xtime_lock);
} else {
local_cpu_data->itm_next = delta_itm + new_itm;
}
per_cpu(xen_stolen_time, cpu) += NS_PER_TICK * stolen;
per_cpu(xen_blocked_time, cpu) += NS_PER_TICK * blocked;
}

5
arch/m32r/kernel/time.c
View File

@ -107,15 +107,14 @@ u32 arch_gettimeoffset(void)
/*
* timer_interrupt() needs to keep up the real-time clock,
* as well as call the "do_timer()" routine every clocktick
* as well as call the "xtime_update()" routine every clocktick
*/
static irqreturn_t timer_interrupt(int irq, void *dev_id)
{
#ifndef CONFIG_SMP
profile_tick(CPU_PROFILING);
#endif
/* XXX FIXME. Uh, the xtime_lock should be held here, no? */
do_timer(1);
xtime_update(1);
#ifndef CONFIG_SMP
update_process_times(user_mode(get_irq_regs()));

4
arch/m68k/bvme6000/config.c
View File

@ -45,8 +45,8 @@ extern int bvme6000_set_clock_mmss (unsigned long);
extern void bvme6000_reset (void);
void bvme6000_set_vectors (void);
/* Save tick handler routine pointer, will point to do_timer() in
* kernel/sched.c, called via bvme6000_process_int() */
/* Save tick handler routine pointer, will point to xtime_update() in
* kernel/timer/timekeeping.c, called via bvme6000_process_int() */
static irq_handler_t tick_handler;

4
arch/m68k/kernel/time.c
View File

@ -37,11 +37,11 @@ static inline int set_rtc_mmss(unsigned long nowtime)
/*
* timer_interrupt() needs to keep up the real-time clock,
* as well as call the "do_timer()" routine every clocktick
* as well as call the "xtime_update()" routine every clocktick
*/
static irqreturn_t timer_interrupt(int irq, void *dummy)
{
do_timer(1);
xtime_update(1);
update_process_times(user_mode(get_irq_regs()));
profile_tick(CPU_PROFILING);

4
arch/m68k/mvme147/config.c
View File

@ -46,8 +46,8 @@ extern void mvme147_reset (void);
static int bcd2int (unsigned char b);
/* Save tick handler routine pointer, will point to do_timer() in
* kernel/sched.c, called via mvme147_process_int() */
/* Save tick handler routine pointer, will point to xtime_update() in
* kernel/time/timekeeping.c, called via mvme147_process_int() */
irq_handler_t tick_handler;

4
arch/m68k/mvme16x/config.c
View File

@ -51,8 +51,8 @@ extern void mvme16x_reset (void);
int bcd2int (unsigned char b);
/* Save tick handler routine pointer, will point to do_timer() in
* kernel/sched.c, called via mvme16x_process_int() */
/* Save tick handler routine pointer, will point to xtime_update() in
* kernel/time/timekeeping.c, called via mvme16x_process_int() */
static irq_handler_t tick_handler;

2
arch/m68k/sun3/sun3ints.c
View File

@ -66,7 +66,7 @@ static irqreturn_t sun3_int5(int irq, void *dev_id)
#ifdef CONFIG_SUN3
intersil_clear();
#endif
do_timer(1);
xtime_update(1);
update_process_times(user_mode(get_irq_regs()));
if (!(kstat_cpu(0).irqs[irq] % 20))
sun3_leds(led_pattern[(kstat_cpu(0).irqs[irq] % 160) / 20]);

8
arch/m68knommu/kernel/time.c
View File

@ -36,7 +36,7 @@ static inline int set_rtc_mmss(unsigned long nowtime)
#ifndef CONFIG_GENERIC_CLOCKEVENTS
/*
* timer_interrupt() needs to keep up the real-time clock,
* as well as call the "do_timer()" routine every clocktick
* as well as call the "xtime_update()" routine every clocktick
*/
irqreturn_t arch_timer_interrupt(int irq, void *dummy)
{
@ -44,11 +44,7 @@ irqreturn_t arch_timer_interrupt(int irq, void *dummy)
if (current->pid)
profile_tick(CPU_PROFILING);
write_seqlock(&xtime_lock);
do_timer(1);
write_sequnlock(&xtime_lock);
xtime_update(1);
update_process_times(user_mode(get_irq_regs()));

31
arch/microblaze/include/asm/futex.h
View File

@ -29,7 +29,7 @@
})
static inline int
futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@ -39,7 +39,7 @@ futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
pagefault_disable();
@ -94,31 +94,34 @@ futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
}
static inline int
futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
int prev, cmp;
int ret = 0, cmp;
u32 prev;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
__asm__ __volatile__ ("1: lwx %0, %2, r0; \
cmp %1, %0, %3; \
beqi %1, 3f; \
2: swx %4, %2, r0; \
addic %1, r0, 0; \
bnei %1, 1b; \
__asm__ __volatile__ ("1: lwx %1, %3, r0; \
cmp %2, %1, %4; \
beqi %2, 3f; \
2: swx %5, %3, r0; \
addic %2, r0, 0; \
bnei %2, 1b; \
3: \
.section .fixup,\"ax\"; \
4: brid 3b; \
addik %0, r0, %5; \
addik %0, r0, %6; \
.previous; \
.section __ex_table,\"a\"; \
.word 1b,4b,2b,4b; \
.previous;" \
: "=&r" (prev), "=&r"(cmp) \
: "+r" (ret), "=&r" (prev), "=&r"(cmp) \
: "r" (uaddr), "r" (oldval), "r" (newval), "i" (-EFAULT));
return prev;
*uval = prev;
return ret;
}
#endif /* __KERNEL__ */

12
arch/microblaze/include/asm/pci-bridge.h
View File

@ -104,11 +104,22 @@ struct pci_controller {
int global_number; /* PCI domain number */
};
#ifdef CONFIG_PCI
static inline struct pci_controller *pci_bus_to_host(const struct pci_bus *bus)
{
return bus->sysdata;
}
static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus)
{
struct pci_controller *host;
if (bus->self)
return pci_device_to_OF_node(bus->self);
host = pci_bus_to_host(bus);
return host ? host->dn : NULL;
}
static inline int isa_vaddr_is_ioport(void __iomem *address)
{
/* No specific ISA handling on ppc32 at this stage, it
@ -116,6 +127,7 @@ static inline int isa_vaddr_is_ioport(void __iomem *address)
*/
return 0;
}
#endif /* CONFIG_PCI */
/* These are used for config access before all the PCI probing
has been done. */

15
arch/microblaze/include/asm/prom.h
View File

@ -64,21 +64,6 @@ extern void kdump_move_device_tree(void);
/* CPU OF node matching */
struct device_node *of_get_cpu_node(int cpu, unsigned int *thread);
/**
* of_irq_map_pci - Resolve the interrupt for a PCI device
* @pdev: the device whose interrupt is to be resolved
* @out_irq: structure of_irq filled by this function
*
* This function resolves the PCI interrupt for a given PCI device. If a
* device-node exists for a given pci_dev, it will use normal OF tree
* walking. If not, it will implement standard swizzling and walk up the
* PCI tree until an device-node is found, at which point it will finish
* resolving using the OF tree walking.
*/
struct pci_dev;
struct of_irq;
extern int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq);
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */

77
arch/microblaze/kernel/prom_parse.c
View File

@ -2,88 +2,11 @@
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/pci_regs.h>
#include <linux/module.h>
#include <linux/ioport.h>
#include <linux/etherdevice.h>
#include <linux/of_address.h>
#include <asm/prom.h>
#include <asm/pci-bridge.h>
#ifdef CONFIG_PCI
int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq)
{
struct device_node *dn, *ppnode;
struct pci_dev *ppdev;
u32 lspec;
u32 laddr[3];
u8 pin;
int rc;
/* Check if we have a device node, if yes, fallback to standard OF
* parsing
*/
dn = pci_device_to_OF_node(pdev);
if (dn)
return of_irq_map_one(dn, 0, out_irq);
/* Ok, we don't, time to have fun. Let's start by building up an
* interrupt spec. we assume #interrupt-cells is 1, which is standard
* for PCI. If you do different, then don't use that routine.
*/
rc = pci_read_config_byte(pdev, PCI_INTERRUPT_PIN, &pin);
if (rc != 0)
return rc;
/* No pin, exit */
if (pin == 0)
return -ENODEV;
/* Now we walk up the PCI tree */
lspec = pin;
for (;;) {
/* Get the pci_dev of our parent */
ppdev = pdev->bus->self;
/* Ouch, it's a host bridge... */
if (ppdev == NULL) {
struct pci_controller *host;
host = pci_bus_to_host(pdev->bus);
ppnode = host ? host->dn : NULL;
/* No node for host bridge ? give up */
if (ppnode == NULL)
return -EINVAL;
} else
/* We found a P2P bridge, check if it has a node */
ppnode = pci_device_to_OF_node(ppdev);
/* Ok, we have found a parent with a device-node, hand over to
* the OF parsing code.
* We build a unit address from the linux device to be used for
* resolution. Note that we use the linux bus number which may
* not match your firmware bus numbering.
* Fortunately, in most cases, interrupt-map-mask doesn't
* include the bus number as part of the matching.
* You should still be careful about that though if you intend
* to rely on this function (you ship a firmware that doesn't
* create device nodes for all PCI devices).
*/
if (ppnode)
break;
/* We can only get here if we hit a P2P bridge with no node,
* let's do standard swizzling and try again
*/
lspec = pci_swizzle_interrupt_pin(pdev, lspec);
pdev = ppdev;
}
laddr[0] = (pdev->bus->number << 16)
| (pdev->devfn << 8);
laddr[1] = laddr[2] = 0;
return of_irq_map_raw(ppnode, &lspec, 1, laddr, out_irq);
}
EXPORT_SYMBOL_GPL(of_irq_map_pci);
#endif /* CONFIG_PCI */
void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop,
unsigned long *busno, unsigned long *phys, unsigned long *size)

1
arch/microblaze/pci/pci-common.c
View File

@ -29,6 +29,7 @@
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_pci.h>
#include <asm/processor.h>
#include <asm/io.h>

39
arch/mips/include/asm/futex.h
View File

@ -75,7 +75,7 @@
}
static inline int
futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@ -85,7 +85,7 @@ futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
if (! access_ok (VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
pagefault_disable();
@ -132,11 +132,13 @@ futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
}
static inline int
futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
int retval;
int ret = 0;
u32 val;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
if (cpu_has_llsc && R10000_LLSC_WAR) {
@ -145,25 +147,25 @@ futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
" .set push \n"
" .set noat \n"
" .set mips3 \n"
"1: ll %0, %2 \n"
" bne %0, %z3, 3f \n"
"1: ll %1, %3 \n"
" bne %1, %z4, 3f \n"
" .set mips0 \n"
" move $1, %z4 \n"
" move $1, %z5 \n"
" .set mips3 \n"
"2: sc $1, %1 \n"
"2: sc $1, %2 \n"
" beqzl $1, 1b \n"
__WEAK_LLSC_MB
"3: \n"
" .set pop \n"
" .section .fixup,\"ax\" \n"
"4: li %0, %5 \n"
"4: li %0, %6 \n"
" j 3b \n"
" .previous \n"
" .section __ex_table,\"a\" \n"
" "__UA_ADDR "\t1b, 4b \n"
" "__UA_ADDR "\t2b, 4b \n"
" .previous \n"
: "=&r" (retval), "=R" (*uaddr)
: "+r" (ret), "=&r" (val), "=R" (*uaddr)
: "R" (*uaddr), "Jr" (oldval), "Jr" (newval), "i" (-EFAULT)
: "memory");
} else if (cpu_has_llsc) {
@ -172,31 +174,32 @@ futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
" .set push \n"
" .set noat \n"
" .set mips3 \n"
"1: ll %0, %2 \n"
" bne %0, %z3, 3f \n"
"1: ll %1, %3 \n"
" bne %1, %z4, 3f \n"
" .set mips0 \n"
" move $1, %z4 \n"
" move $1, %z5 \n"
" .set mips3 \n"
"2: sc $1, %1 \n"
"2: sc $1, %2 \n"
" beqz $1, 1b \n"
__WEAK_LLSC_MB
"3: \n"
" .set pop \n"
" .section .fixup,\"ax\" \n"
"4: li %0, %5 \n"
"4: li %0, %6 \n"
" j 3b \n"
" .previous \n"
" .section __ex_table,\"a\" \n"
" "__UA_ADDR "\t1b, 4b \n"
" "__UA_ADDR "\t2b, 4b \n"
" .previous \n"
: "=&r" (retval), "=R" (*uaddr)
: "+r" (ret), "=&r" (val), "=R" (*uaddr)
: "R" (*uaddr), "Jr" (oldval), "Jr" (newval), "i" (-EFAULT)
: "memory");
} else
return -ENOSYS;
return retval;
*uval = val;
return ret;
}
#endif

6
arch/mn10300/kernel/time.c
View File

@ -104,8 +104,6 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id)
unsigned tsc, elapse;
irqreturn_t ret;
write_seqlock(&xtime_lock);
while (tsc = get_cycles(),
elapse = tsc - mn10300_last_tsc, /* time elapsed since last
* tick */
@ -114,11 +112,9 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id)
mn10300_last_tsc += MN10300_TSC_PER_HZ;
/* advance the kernel's time tracking system */
do_timer(1);
xtime_update(1);
}
write_sequnlock(&xtime_lock);
ret = local_timer_interrupt();
#ifdef CONFIG_SMP
send_IPI_allbutself(LOCAL_TIMER_IPI);

65
arch/parisc/hpux/sys_hpux.c
View File

@ -185,26 +185,21 @@ struct hpux_statfs {
int16_t f_pad;
};
static int do_statfs_hpux(struct path *path, struct hpux_statfs *buf)
static int do_statfs_hpux(struct kstatfs *st, struct hpux_statfs __user *p)
{
struct kstatfs st;
int retval;
retval = vfs_statfs(path, &st);
if (retval)
return retval;
memset(buf, 0, sizeof(*buf));
buf->f_type = st.f_type;
buf->f_bsize = st.f_bsize;
buf->f_blocks = st.f_blocks;
buf->f_bfree = st.f_bfree;
buf->f_bavail = st.f_bavail;
buf->f_files = st.f_files;
buf->f_ffree = st.f_ffree;
buf->f_fsid[0] = st.f_fsid.val[0];
buf->f_fsid[1] = st.f_fsid.val[1];
struct hpux_statfs buf;
memset(&buf, 0, sizeof(buf));
buf.f_type = st->f_type;
buf.f_bsize = st->f_bsize;
buf.f_blocks = st->f_blocks;
buf.f_bfree = st->f_bfree;
buf.f_bavail = st->f_bavail;
buf.f_files = st->f_files;
buf.f_ffree = st->f_ffree;
buf.f_fsid[0] = st->f_fsid.val[0];
buf.f_fsid[1] = st->f_fsid.val[1];
if (copy_to_user(p, &buf, sizeof(buf)))
return -EFAULT;
return 0;
}
@ -212,35 +207,19 @@ static int do_statfs_hpux(struct path *path, struct hpux_statfs *buf)
asmlinkage long hpux_statfs(const char __user *pathname,
struct hpux_statfs __user *buf)
{
struct path path;
int error;
error = user_path(pathname, &path);
if (!error) {
struct hpux_statfs tmp;
error = do_statfs_hpux(&path, &tmp);
if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
error = -EFAULT;
path_put(&path);
}
struct kstatfs st;
int error = user_statfs(pathname, &st);
if (!error)
error = do_statfs_hpux(&st, buf);
return error;
}
asmlinkage long hpux_fstatfs(unsigned int fd, struct hpux_statfs __user * buf)
{
struct file *file;
struct hpux_statfs tmp;
int error;
error = -EBADF;
file = fget(fd);
if (!file)
goto out;
error = do_statfs_hpux(&file->f_path, &tmp);
if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
error = -EFAULT;
fput(file);
out:
struct kstatfs st;
int error = fd_statfs(fd, &st);
if (!error)
error = do_statfs_hpux(&st, buf);
return error;
}

2
arch/parisc/include/asm/fcntl.h
View File

@ -19,6 +19,8 @@
#define O_NOFOLLOW 000000200 /* don't follow links */
#define O_INVISIBLE 004000000 /* invisible I/O, for DMAPI/XDSM */
#define O_PATH 020000000
#define F_GETLK64 8
#define F_SETLK64 9
#define F_SETLKW64 10

24
arch/parisc/include/asm/futex.h
View File

@ -8,7 +8,7 @@
#include <asm/errno.h>
static inline int
futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@ -18,7 +18,7 @@ futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
if (! access_ok (VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
pagefault_disable();
@ -51,10 +51,10 @@ futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
/* Non-atomic version */
static inline int
futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
int err = 0;
int uval;
u32 val;
/* futex.c wants to do a cmpxchg_inatomic on kernel NULL, which is
* our gateway page, and causes no end of trouble...
@ -62,15 +62,15 @@ futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
if (segment_eq(KERNEL_DS, get_fs()) && !uaddr)
return -EFAULT;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
err = get_user(uval, uaddr);
if (err) return -EFAULT;
if (uval == oldval)
err = put_user(newval, uaddr);
if (err) return -EFAULT;
return uval;
if (get_user(val, uaddr))
return -EFAULT;
if (val == oldval && put_user(newval, uaddr))
return -EFAULT;
*uval = val;
return 0;
}
#endif /*__KERNEL__*/

7
arch/parisc/kernel/time.c
View File

@ -162,11 +162,8 @@ irqreturn_t __irq_entry timer_interrupt(int irq, void *dev_id)
update_process_times(user_mode(get_irq_regs()));
}
if (cpu == 0) {
write_seqlock(&xtime_lock);
do_timer(ticks_elapsed);
write_sequnlock(&xtime_lock);
}
if (cpu == 0)
xtime_update(ticks_elapsed);
return IRQ_HANDLED;
}

27
arch/powerpc/include/asm/futex.h
View File

@ -30,7 +30,7 @@
: "b" (uaddr), "i" (-EFAULT), "r" (oparg) \
: "cr0", "memory")
static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
static inline int futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@ -40,7 +40,7 @@ static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
if (! access_ok (VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
pagefault_disable();
@ -82,35 +82,38 @@ static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
}
static inline int
futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
int prev;
int ret = 0;
u32 prev;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
__asm__ __volatile__ (
PPC_RELEASE_BARRIER
"1: lwarx %0,0,%2 # futex_atomic_cmpxchg_inatomic\n\
cmpw 0,%0,%3\n\
"1: lwarx %1,0,%3 # futex_atomic_cmpxchg_inatomic\n\
cmpw 0,%1,%4\n\
bne- 3f\n"
PPC405_ERR77(0,%2)
"2: stwcx. %4,0,%2\n\
PPC405_ERR77(0,%3)
"2: stwcx. %5,0,%3\n\
bne- 1b\n"
PPC_ACQUIRE_BARRIER
"3: .section .fixup,\"ax\"\n\
4: li %0,%5\n\
4: li %0,%6\n\
b 3b\n\
.previous\n\
.section __ex_table,\"a\"\n\
.align 3\n\
" PPC_LONG "1b,4b,2b,4b\n\
.previous" \
: "=&r" (prev), "+m" (*uaddr)
: "+r" (ret), "=&r" (prev), "+m" (*uaddr)
: "r" (uaddr), "r" (oldval), "r" (newval), "i" (-EFAULT)
: "cc", "memory");
return prev;
*uval = prev;
return ret;
}
#endif /* __KERNEL__ */

10
arch/powerpc/include/asm/pci-bridge.h
View File

@ -171,6 +171,16 @@ static inline struct pci_controller *pci_bus_to_host(const struct pci_bus *bus)
return bus->sysdata;
}
static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus)
{
struct pci_controller *host;
if (bus->self)
return pci_device_to_OF_node(bus->self);
host = pci_bus_to_host(bus);
return host ? host->dn : NULL;
}
static inline int isa_vaddr_is_ioport(void __iomem *address)
{
/* No specific ISA handling on ppc32 at this stage, it

15
arch/powerpc/include/asm/prom.h
View File

@ -70,21 +70,6 @@ static inline int of_node_to_nid(struct device_node *device) { return 0; }
#endif
#define of_node_to_nid of_node_to_nid
/**
* of_irq_map_pci - Resolve the interrupt for a PCI device
* @pdev: the device whose interrupt is to be resolved
* @out_irq: structure of_irq filled by this function
*
* This function resolves the PCI interrupt for a given PCI device. If a
* device-node exists for a given pci_dev, it will use normal OF tree
* walking. If not, it will implement standard swizzling and walk up the
* PCI tree until an device-node is found, at which point it will finish
* resolving using the OF tree walking.
*/
struct pci_dev;
struct of_irq;
extern int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq);
extern void of_instantiate_rtc(void);
/* These includes are put at the bottom because they may contain things

51
arch/powerpc/include/asm/rwsem.h
View File

@ -13,11 +13,6 @@
* by Paul Mackerras <paulus@samba.org>.
*/
#include <linux/list.h>
#include <linux/spinlock.h>
#include <asm/atomic.h>
#include <asm/system.h>
/*
* the semaphore definition
*/
@ -33,47 +28,6 @@
#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
struct rw_semaphore {
long count;
spinlock_t wait_lock;
struct list_head wait_list;
#ifdef CONFIG_DEBUG_LOCK_ALLOC
struct lockdep_map dep_map;
#endif
};
#ifdef CONFIG_DEBUG_LOCK_ALLOC
# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
#else
# define __RWSEM_DEP_MAP_INIT(lockname)
#endif
#define __RWSEM_INITIALIZER(name) \
{ \
RWSEM_UNLOCKED_VALUE, \
__SPIN_LOCK_UNLOCKED((name).wait_lock), \
LIST_HEAD_INIT((name).wait_list) \
__RWSEM_DEP_MAP_INIT(name) \
}
#define DECLARE_RWSEM(name) \
struct rw_semaphore name = __RWSEM_INITIALIZER(name)
extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
struct lock_class_key *key);
#define init_rwsem(sem) \
do { \
static struct lock_class_key __key; \
\
__init_rwsem((sem), #sem, &__key); \
} while (0)
/*
* lock for reading
*/
@ -174,10 +128,5 @@ static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
return atomic_long_add_return(delta, (atomic_long_t *)&sem->count);
}
static inline int rwsem_is_locked(struct rw_semaphore *sem)
{
return sem->count != 0;
}
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_RWSEM_H */

1
arch/powerpc/kernel/pci-common.c
View File

@ -22,6 +22,7 @@
#include <linux/init.h>
#include <linux/bootmem.h>
#include <linux/of_address.h>
#include <linux/of_pci.h>
#include <linux/mm.h>
#include <linux/list.h>
#include <linux/syscalls.h>

84
arch/powerpc/kernel/prom_parse.c
View File

@ -2,95 +2,11 @@
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/pci_regs.h>
#include <linux/module.h>
#include <linux/ioport.h>
#include <linux/etherdevice.h>
#include <linux/of_address.h>
#include <asm/prom.h>
#include <asm/pci-bridge.h>
#ifdef CONFIG_PCI
int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq)
{
struct device_node *dn, *ppnode;
struct pci_dev *ppdev;
u32 lspec;
u32 laddr[3];
u8 pin;
int rc;
/* Check if we have a device node, if yes, fallback to standard OF
* parsing
*/
dn = pci_device_to_OF_node(pdev);
if (dn) {
rc = of_irq_map_one(dn, 0, out_irq);
if (!rc)
return rc;
}
/* Ok, we don't, time to have fun. Let's start by building up an
* interrupt spec. we assume #interrupt-cells is 1, which is standard
* for PCI. If you do different, then don't use that routine.
*/
rc = pci_read_config_byte(pdev, PCI_INTERRUPT_PIN, &pin);
if (rc != 0)
return rc;
/* No pin, exit */
if (pin == 0)
return -ENODEV;
/* Now we walk up the PCI tree */
lspec = pin;
for (;;) {
/* Get the pci_dev of our parent */
ppdev = pdev->bus->self;
/* Ouch, it's a host bridge... */
if (ppdev == NULL) {
#ifdef CONFIG_PPC64
ppnode = pci_bus_to_OF_node(pdev->bus);
#else
struct pci_controller *host;
host = pci_bus_to_host(pdev->bus);
ppnode = host ? host->dn : NULL;
#endif
/* No node for host bridge ? give up */
if (ppnode == NULL)
return -EINVAL;
} else
/* We found a P2P bridge, check if it has a node */
ppnode = pci_device_to_OF_node(ppdev);
/* Ok, we have found a parent with a device-node, hand over to
* the OF parsing code.
* We build a unit address from the linux device to be used for
* resolution. Note that we use the linux bus number which may
* not match your firmware bus numbering.
* Fortunately, in most cases, interrupt-map-mask doesn't include
* the bus number as part of the matching.
* You should still be careful about that though if you intend
* to rely on this function (you ship a firmware that doesn't
* create device nodes for all PCI devices).
*/
if (ppnode)
break;
/* We can only get here if we hit a P2P bridge with no node,
* let's do standard swizzling and try again
*/
lspec = pci_swizzle_interrupt_pin(pdev, lspec);
pdev = ppdev;
}
laddr[0] = (pdev->bus->number << 16)
| (pdev->devfn << 8);
laddr[1] = laddr[2] = 0;
return of_irq_map_raw(ppnode, &lspec, 1, laddr, out_irq);
}
EXPORT_SYMBOL_GPL(of_irq_map_pci);
#endif /* CONFIG_PCI */
void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop,
unsigned long *busno, unsigned long *phys, unsigned long *size)

2
arch/powerpc/platforms/cell/spufs/syscalls.c
View File

@ -70,7 +70,7 @@ static long do_spu_create(const char __user *pathname, unsigned int flags,
if (!IS_ERR(tmp)) {
struct nameidata nd;
ret = path_lookup(tmp, LOOKUP_PARENT, &nd);
ret = kern_path_parent(tmp, &nd);
if (!ret) {
nd.flags |= LOOKUP_OPEN | LOOKUP_CREATE;
ret = spufs_create(&nd, flags, mode, neighbor);

12
arch/s390/include/asm/futex.h
View File

@ -7,7 +7,7 @@
#include <linux/uaccess.h>
#include <asm/errno.h>
static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
static inline int futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@ -18,7 +18,7 @@ static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
if (! access_ok (VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
pagefault_disable();
@ -39,13 +39,13 @@ static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
return ret;
}
static inline int futex_atomic_cmpxchg_inatomic(int __user *uaddr,
int oldval, int newval)
static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
if (! access_ok (VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
return uaccess.futex_atomic_cmpxchg(uaddr, oldval, newval);
return uaccess.futex_atomic_cmpxchg(uval, uaddr, oldval, newval);
}
#endif /* __KERNEL__ */

63
arch/s390/include/asm/rwsem.h
View File

@ -43,29 +43,6 @@
#ifdef __KERNEL__
#include <linux/list.h>
#include <linux/spinlock.h>
struct rwsem_waiter;
extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *);
extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *);
extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *);
extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *);
extern struct rw_semaphore *rwsem_downgrade_write(struct rw_semaphore *);
/*
* the semaphore definition
*/
struct rw_semaphore {
signed long count;
spinlock_t wait_lock;
struct list_head wait_list;
#ifdef CONFIG_DEBUG_LOCK_ALLOC
struct lockdep_map dep_map;
#endif
};
#ifndef __s390x__
#define RWSEM_UNLOCKED_VALUE 0x00000000
#define RWSEM_ACTIVE_BIAS 0x00000001
@ -80,41 +57,6 @@ struct rw_semaphore {
#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
/*
* initialisation
*/
#ifdef CONFIG_DEBUG_LOCK_ALLOC
# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
#else
# define __RWSEM_DEP_MAP_INIT(lockname)
#endif
#define __RWSEM_INITIALIZER(name) \
{ RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED((name).wait.lock), \
LIST_HEAD_INIT((name).wait_list) __RWSEM_DEP_MAP_INIT(name) }
#define DECLARE_RWSEM(name) \
struct rw_semaphore name = __RWSEM_INITIALIZER(name)
static inline void init_rwsem(struct rw_semaphore *sem)
{
sem->count = RWSEM_UNLOCKED_VALUE;
spin_lock_init(&sem->wait_lock);
INIT_LIST_HEAD(&sem->wait_list);
}
extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
struct lock_class_key *key);
#define init_rwsem(sem) \
do { \
static struct lock_class_key __key; \
\
__init_rwsem((sem), #sem, &__key); \
} while (0)
/*
* lock for reading
*/
@ -377,10 +319,5 @@ static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
return new;
}
static inline int rwsem_is_locked(struct rw_semaphore *sem)
{
return (sem->count != 0);
}
#endif /* __KERNEL__ */
#endif /* _S390_RWSEM_H */

4
arch/s390/include/asm/uaccess.h
View File

@ -83,8 +83,8 @@ struct uaccess_ops {
size_t (*clear_user)(size_t, void __user *);
size_t (*strnlen_user)(size_t, const char __user *);
size_t (*strncpy_from_user)(size_t, const char __user *, char *);
int (*futex_atomic_op)(int op, int __user *, int oparg, int *old);
int (*futex_atomic_cmpxchg)(int __user *, int old, int new);
int (*futex_atomic_op)(int op, u32 __user *, int oparg, int *old);
int (*futex_atomic_cmpxchg)(u32 *, u32 __user *, u32 old, u32 new);
};
extern struct uaccess_ops uaccess;

8
arch/s390/lib/uaccess.h
View File

@ -12,12 +12,12 @@ extern size_t copy_from_user_std(size_t, const void __user *, void *);
extern size_t copy_to_user_std(size_t, void __user *, const void *);
extern size_t strnlen_user_std(size_t, const char __user *);
extern size_t strncpy_from_user_std(size_t, const char __user *, char *);
extern int futex_atomic_cmpxchg_std(int __user *, int, int);
extern int futex_atomic_op_std(int, int __user *, int, int *);
extern int futex_atomic_cmpxchg_std(u32 *, u32 __user *, u32, u32);
extern int futex_atomic_op_std(int, u32 __user *, int, int *);
extern size_t copy_from_user_pt(size_t, const void __user *, void *);
extern size_t copy_to_user_pt(size_t, void __user *, const void *);
extern int futex_atomic_op_pt(int, int __user *, int, int *);
extern int futex_atomic_cmpxchg_pt(int __user *, int, int);
extern int futex_atomic_op_pt(int, u32 __user *, int, int *);
extern int futex_atomic_cmpxchg_pt(u32 *, u32 __user *, u32, u32);
#endif /* __ARCH_S390_LIB_UACCESS_H */

17
arch/s390/lib/uaccess_pt.c
View File

@ -302,7 +302,7 @@ fault:
: "0" (-EFAULT), "d" (oparg), "a" (uaddr), \
"m" (*uaddr) : "cc" );
static int __futex_atomic_op_pt(int op, int __user *uaddr, int oparg, int *old)
static int __futex_atomic_op_pt(int op, u32 __user *uaddr, int oparg, int *old)
{
int oldval = 0, newval, ret;
@ -335,7 +335,7 @@ static int __futex_atomic_op_pt(int op, int __user *uaddr, int oparg, int *old)
return ret;
}
int futex_atomic_op_pt(int op, int __user *uaddr, int oparg, int *old)
int futex_atomic_op_pt(int op, u32 __user *uaddr, int oparg, int *old)
{
int ret;
@ -354,26 +354,29 @@ int futex_atomic_op_pt(int op, int __user *uaddr, int oparg, int *old)
return ret;
}
static int __futex_atomic_cmpxchg_pt(int __user *uaddr, int oldval, int newval)
static int __futex_atomic_cmpxchg_pt(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
int ret;
asm volatile("0: cs %1,%4,0(%5)\n"
"1: lr %0,%1\n"
"1: la %0,0\n"
"2:\n"
EX_TABLE(0b,2b) EX_TABLE(1b,2b)
: "=d" (ret), "+d" (oldval), "=m" (*uaddr)
: "0" (-EFAULT), "d" (newval), "a" (uaddr), "m" (*uaddr)
: "cc", "memory" );
*uval = oldval;
return ret;
}
int futex_atomic_cmpxchg_pt(int __user *uaddr, int oldval, int newval)
int futex_atomic_cmpxchg_pt(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
int ret;
if (segment_eq(get_fs(), KERNEL_DS))
return __futex_atomic_cmpxchg_pt(uaddr, oldval, newval);
return __futex_atomic_cmpxchg_pt(uval, uaddr, oldval, newval);
spin_lock(&current->mm->page_table_lock);
uaddr = (int __user *) __dat_user_addr((unsigned long) uaddr);
if (!uaddr) {
@ -382,7 +385,7 @@ int futex_atomic_cmpxchg_pt(int __user *uaddr, int oldval, int newval)
}
get_page(virt_to_page(uaddr));
spin_unlock(&current->mm->page_table_lock);
ret = __futex_atomic_cmpxchg_pt(uaddr, oldval, newval);
ret = __futex_atomic_cmpxchg_pt(uval, uaddr, oldval, newval);
put_page(virt_to_page(uaddr));
return ret;
}

8
arch/s390/lib/uaccess_std.c
View File

@ -255,7 +255,7 @@ size_t strncpy_from_user_std(size_t size, const char __user *src, char *dst)
: "0" (-EFAULT), "d" (oparg), "a" (uaddr), \
"m" (*uaddr) : "cc");
int futex_atomic_op_std(int op, int __user *uaddr, int oparg, int *old)
int futex_atomic_op_std(int op, u32 __user *uaddr, int oparg, int *old)
{
int oldval = 0, newval, ret;
@ -287,19 +287,21 @@ int futex_atomic_op_std(int op, int __user *uaddr, int oparg, int *old)
return ret;
}
int futex_atomic_cmpxchg_std(int __user *uaddr, int oldval, int newval)
int futex_atomic_cmpxchg_std(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
int ret;
asm volatile(
" sacf 256\n"
"0: cs %1,%4,0(%5)\n"
"1: lr %0,%1\n"
"1: la %0,0\n"
"2: sacf 0\n"
EX_TABLE(0b,2b) EX_TABLE(1b,2b)
: "=d" (ret), "+d" (oldval), "=m" (*uaddr)
: "0" (-EFAULT), "d" (newval), "a" (uaddr), "m" (*uaddr)
: "cc", "memory" );
*uval = oldval;
return ret;
}

22
arch/sh/include/asm/futex-irq.h
View File

@ -3,7 +3,7 @@
#include <asm/system.h>
static inline int atomic_futex_op_xchg_set(int oparg, int __user *uaddr,
static inline int atomic_futex_op_xchg_set(int oparg, u32 __user *uaddr,
int *oldval)
{
unsigned long flags;
@ -20,7 +20,7 @@ static inline int atomic_futex_op_xchg_set(int oparg, int __user *uaddr,
return ret;
}
static inline int atomic_futex_op_xchg_add(int oparg, int __user *uaddr,
static inline int atomic_futex_op_xchg_add(int oparg, u32 __user *uaddr,
int *oldval)
{
unsigned long flags;
@ -37,7 +37,7 @@ static inline int atomic_futex_op_xchg_add(int oparg, int __user *uaddr,
return ret;
}
static inline int atomic_futex_op_xchg_or(int oparg, int __user *uaddr,
static inline int atomic_futex_op_xchg_or(int oparg, u32 __user *uaddr,
int *oldval)
{
unsigned long flags;
@ -54,7 +54,7 @@ static inline int atomic_futex_op_xchg_or(int oparg, int __user *uaddr,
return ret;
}
static inline int atomic_futex_op_xchg_and(int oparg, int __user *uaddr,
static inline int atomic_futex_op_xchg_and(int oparg, u32 __user *uaddr,
int *oldval)
{
unsigned long flags;
@ -71,7 +71,7 @@ static inline int atomic_futex_op_xchg_and(int oparg, int __user *uaddr,
return ret;
}
static inline int atomic_futex_op_xchg_xor(int oparg, int __user *uaddr,
static inline int atomic_futex_op_xchg_xor(int oparg, u32 __user *uaddr,
int *oldval)
{
unsigned long flags;
@ -88,11 +88,13 @@ static inline int atomic_futex_op_xchg_xor(int oparg, int __user *uaddr,
return ret;
}
static inline int atomic_futex_op_cmpxchg_inatomic(int __user *uaddr,
int oldval, int newval)
static inline int atomic_futex_op_cmpxchg_inatomic(u32 *uval,
u32 __user *uaddr,
u32 oldval, u32 newval)
{
unsigned long flags;
int ret, prev = 0;
int ret;
u32 prev = 0;
local_irq_save(flags);
@ -102,10 +104,8 @@ static inline int atomic_futex_op_cmpxchg_inatomic(int __user *uaddr,
local_irq_restore(flags);
if (ret)
*uval = prev;
return ret;
return prev;
}
#endif /* __ASM_SH_FUTEX_IRQ_H */

11
arch/sh/include/asm/futex.h
View File

@ -10,7 +10,7 @@
/* XXX: UP variants, fix for SH-4A and SMP.. */
#include <asm/futex-irq.h>
static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@ -21,7 +21,7 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
pagefault_disable();
@ -65,12 +65,13 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
}
static inline int
futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
return atomic_futex_op_cmpxchg_inatomic(uaddr, oldval, newval);
return atomic_futex_op_cmpxchg_inatomic(uval, uaddr, oldval, newval);
}
#endif /* __KERNEL__ */

56
arch/sh/include/asm/rwsem.h
View File

@ -11,64 +11,13 @@
#endif
#ifdef __KERNEL__
#include <linux/list.h>
#include <linux/spinlock.h>
#include <asm/atomic.h>
#include <asm/system.h>
/*
* the semaphore definition
*/
struct rw_semaphore {
long count;
#define RWSEM_UNLOCKED_VALUE 0x00000000
#define RWSEM_ACTIVE_BIAS 0x00000001
#define RWSEM_ACTIVE_MASK 0x0000ffff
#define RWSEM_WAITING_BIAS (-0x00010000)
#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
spinlock_t wait_lock;
struct list_head wait_list;
#ifdef CONFIG_DEBUG_LOCK_ALLOC
struct lockdep_map dep_map;
#endif
};
#ifdef CONFIG_DEBUG_LOCK_ALLOC
# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
#else
# define __RWSEM_DEP_MAP_INIT(lockname)
#endif
#define __RWSEM_INITIALIZER(name) \
{ RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED((name).wait_lock), \
LIST_HEAD_INIT((name).wait_list) \
__RWSEM_DEP_MAP_INIT(name) }
#define DECLARE_RWSEM(name) \
struct rw_semaphore name = __RWSEM_INITIALIZER(name)
extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
struct lock_class_key *key);
#define init_rwsem(sem) \
do { \
static struct lock_class_key __key; \
\
__init_rwsem((sem), #sem, &__key); \
} while (0)
static inline void init_rwsem(struct rw_semaphore *sem)
{
sem->count = RWSEM_UNLOCKED_VALUE;
spin_lock_init(&sem->wait_lock);
INIT_LIST_HEAD(&sem->wait_list);
}
/*
* lock for reading
@ -179,10 +128,5 @@ static inline int rwsem_atomic_update(int delta, struct rw_semaphore *sem)
return atomic_add_return(delta, (atomic_t *)(&sem->count));
}
static inline int rwsem_is_locked(struct rw_semaphore *sem)
{
return (sem->count != 0);
}
#endif /* __KERNEL__ */
#endif /* _ASM_SH_RWSEM_H */

2
arch/sparc/include/asm/fcntl.h
View File

@ -34,6 +34,8 @@
#define __O_SYNC 0x800000
#define O_SYNC (__O_SYNC|O_DSYNC)
#define O_PATH 0x1000000
#define F_GETOWN 5 /* for sockets. */
#define F_SETOWN 6 /* for sockets. */
#define F_GETLK 7

20
arch/sparc/include/asm/futex_64.h
View File

@ -30,7 +30,7 @@
: "r" (uaddr), "r" (oparg), "i" (-EFAULT) \
: "memory")
static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@ -38,7 +38,7 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
int cmparg = (encoded_op << 20) >> 20;
int oldval = 0, ret, tem;
if (unlikely(!access_ok(VERIFY_WRITE, uaddr, sizeof(int))))
if (unlikely(!access_ok(VERIFY_WRITE, uaddr, sizeof(u32))))
return -EFAULT;
if (unlikely((((unsigned long) uaddr) & 0x3UL)))
return -EINVAL;
@ -85,26 +85,30 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
}
static inline int
futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
int ret = 0;
__asm__ __volatile__(
"\n1: casa [%3] %%asi, %2, %0\n"
"\n1: casa [%4] %%asi, %3, %1\n"
"2:\n"
" .section .fixup,#alloc,#execinstr\n"
" .align 4\n"
"3: sethi %%hi(2b), %0\n"
" jmpl %0 + %%lo(2b), %%g0\n"
" mov %4, %0\n"
" mov %5, %0\n"
" .previous\n"
" .section __ex_table,\"a\"\n"
" .align 4\n"
" .word 1b, 3b\n"
" .previous\n"
: "=r" (newval)
: "0" (newval), "r" (oldval), "r" (uaddr), "i" (-EFAULT)
: "+r" (ret), "=r" (newval)
: "1" (newval), "r" (oldval), "r" (uaddr), "i" (-EFAULT)
: "memory");
return newval;
*uval = newval;
return ret;
}
#endif /* !(_SPARC64_FUTEX_H) */

46
arch/sparc/include/asm/rwsem.h
View File

@ -13,53 +13,12 @@
#ifdef __KERNEL__
#include <linux/list.h>
#include <linux/spinlock.h>
struct rwsem_waiter;
struct rw_semaphore {
signed long count;
#define RWSEM_UNLOCKED_VALUE 0x00000000L
#define RWSEM_ACTIVE_BIAS 0x00000001L
#define RWSEM_ACTIVE_MASK 0xffffffffL
#define RWSEM_WAITING_BIAS (-RWSEM_ACTIVE_MASK-1)
#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
spinlock_t wait_lock;
struct list_head wait_list;
#ifdef CONFIG_DEBUG_LOCK_ALLOC
struct lockdep_map dep_map;
#endif
};
#ifdef CONFIG_DEBUG_LOCK_ALLOC
# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
#else
# define __RWSEM_DEP_MAP_INIT(lockname)
#endif
#define __RWSEM_INITIALIZER(name) \
{ RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED((name).wait_lock), \
LIST_HEAD_INIT((name).wait_list) __RWSEM_DEP_MAP_INIT(name) }
#define DECLARE_RWSEM(name) \
struct rw_semaphore name = __RWSEM_INITIALIZER(name)
extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
struct lock_class_key *key);
#define init_rwsem(sem) \
do { \
static struct lock_class_key __key; \
\
__init_rwsem((sem), #sem, &__key); \
} while (0)
/*
* lock for reading
@ -160,11 +119,6 @@ static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
return atomic64_add_return(delta, (atomic64_t *)(&sem->count));
}
static inline int rwsem_is_locked(struct rw_semaphore *sem)
{
return (sem->count != 0);
}
#endif /* __KERNEL__ */
#endif /* _SPARC64_RWSEM_H */

4
arch/sparc/kernel/pcic.c
View File

@ -700,10 +700,8 @@ static void pcic_clear_clock_irq(void)
static irqreturn_t pcic_timer_handler (int irq, void *h)
{
write_seqlock(&xtime_lock); /* Dummy, to show that we remember */
pcic_clear_clock_irq();
do_timer(1);
write_sequnlock(&xtime_lock);
xtime_update(1);
#ifndef CONFIG_SMP
update_process_times(user_mode(get_irq_regs()));
#endif

9
arch/sparc/kernel/time_32.c
View File

@ -85,7 +85,7 @@ int update_persistent_clock(struct timespec now)
/*
* timer_interrupt() needs to keep up the real-time clock,
* as well as call the "do_timer()" routine every clocktick
* as well as call the "xtime_update()" routine every clocktick
*/
#define TICK_SIZE (tick_nsec / 1000)
@ -96,14 +96,9 @@ static irqreturn_t timer_interrupt(int dummy, void *dev_id)
profile_tick(CPU_PROFILING);
#endif
/* Protect counter clear so that do_gettimeoffset works */
write_seqlock(&xtime_lock);
clear_clock_irq();
do_timer(1);
write_sequnlock(&xtime_lock);
xtime_update(1);
#ifndef CONFIG_SMP
update_process_times(user_mode(get_irq_regs()));

2
arch/sparc/lib/atomic32.c
View File

@ -16,7 +16,7 @@
#define ATOMIC_HASH(a) (&__atomic_hash[(((unsigned long)a)>>8) & (ATOMIC_HASH_SIZE-1)])
spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] = {
[0 ... (ATOMIC_HASH_SIZE-1)] = SPIN_LOCK_UNLOCKED
[0 ... (ATOMIC_HASH_SIZE-1)] = __SPIN_LOCK_UNLOCKED(__atomic_hash)
};
#else /* SMP */

27
arch/tile/include/asm/futex.h
View File

@ -29,16 +29,16 @@
#include <linux/uaccess.h>
#include <linux/errno.h>
extern struct __get_user futex_set(int __user *v, int i);
extern struct __get_user futex_add(int __user *v, int n);
extern struct __get_user futex_or(int __user *v, int n);
extern struct __get_user futex_andn(int __user *v, int n);
extern struct __get_user futex_cmpxchg(int __user *v, int o, int n);
extern struct __get_user futex_set(u32 __user *v, int i);
extern struct __get_user futex_add(u32 __user *v, int n);
extern struct __get_user futex_or(u32 __user *v, int n);
extern struct __get_user futex_andn(u32 __user *v, int n);
extern struct __get_user futex_cmpxchg(u32 __user *v, int o, int n);
#ifndef __tilegx__
extern struct __get_user futex_xor(int __user *v, int n);
extern struct __get_user futex_xor(u32 __user *v, int n);
#else
static inline struct __get_user futex_xor(int __user *uaddr, int n)
static inline struct __get_user futex_xor(u32 __user *uaddr, int n)
{
struct __get_user asm_ret = __get_user_4(uaddr);
if (!asm_ret.err) {
@ -53,7 +53,7 @@ static inline struct __get_user futex_xor(int __user *uaddr, int n)
}
#endif
static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@ -65,7 +65,7 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
pagefault_disable();
@ -119,16 +119,17 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
return ret;
}
static inline int futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval,
int newval)
static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
struct __get_user asm_ret;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
asm_ret = futex_cmpxchg(uaddr, oldval, newval);
return asm_ret.err ? asm_ret.err : asm_ret.val;
*uval = asm_ret.val;
return asm_ret.err;
}
#ifndef __tilegx__

1
arch/um/Kconfig.common
View File

@ -7,6 +7,7 @@ config UML
bool
default y
select HAVE_GENERIC_HARDIRQS
select GENERIC_HARDIRQS_NO_DEPRECATED
config MMU
bool

5
arch/um/Kconfig.x86
View File

@ -10,6 +10,8 @@ endmenu
config UML_X86
def_bool y
select GENERIC_FIND_FIRST_BIT
select GENERIC_FIND_NEXT_BIT
config 64BIT
bool
@ -19,6 +21,9 @@ config X86_32
def_bool !64BIT
select HAVE_AOUT
config X86_64
def_bool 64BIT
config RWSEM_XCHGADD_ALGORITHM
def_bool X86_XADD

21
arch/um/drivers/mconsole_kern.c
View File

@ -124,35 +124,18 @@ void mconsole_log(struct mc_request *req)
#if 0
void mconsole_proc(struct mc_request *req)
{
struct nameidata nd;
struct vfsmount *mnt = current->nsproxy->pid_ns->proc_mnt;
struct file *file;
int n, err;
int n;
char *ptr = req->request.data, *buf;
mm_segment_t old_fs = get_fs();
ptr += strlen("proc");
ptr = skip_spaces(ptr);
err = vfs_path_lookup(mnt->mnt_root, mnt, ptr, LOOKUP_FOLLOW, &nd);
if (err) {
mconsole_reply(req, "Failed to look up file", 1, 0);
goto out;
}
err = may_open(&nd.path, MAY_READ, O_RDONLY);
if (result) {
mconsole_reply(req, "Failed to open file", 1, 0);
path_put(&nd.path);
goto out;
}
file = dentry_open(nd.path.dentry, nd.path.mnt, O_RDONLY,
current_cred());
err = PTR_ERR(file);
file = file_open_root(mnt->mnt_root, mnt, ptr, O_RDONLY);
if (IS_ERR(file)) {
mconsole_reply(req, "Failed to open file", 1, 0);
path_put(&nd.path);
goto out;
}

2
arch/um/drivers/ubd_kern.c
View File

@ -185,7 +185,7 @@ struct ubd {
.no_cow = 0, \
.shared = 0, \
.cow = DEFAULT_COW, \
.lock = SPIN_LOCK_UNLOCKED, \
.lock = __SPIN_LOCK_UNLOCKED(ubd_devs.lock), \
.request = NULL, \
.start_sg = 0, \
.end_sg = 0, \

31
arch/um/kernel/irq.c
View File

@ -35,8 +35,10 @@ int show_interrupts(struct seq_file *p, void *v)
}
if (i < NR_IRQS) {
raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
action = irq_desc[i].action;
struct irq_desc *desc = irq_to_desc(i);
raw_spin_lock_irqsave(&desc->lock, flags);
action = desc->action;
if (!action)
goto skip;
seq_printf(p, "%3d: ",i);
@ -46,7 +48,7 @@ int show_interrupts(struct seq_file *p, void *v)
for_each_online_cpu(j)
seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
#endif
seq_printf(p, " %14s", irq_desc[i].chip->name);
seq_printf(p, " %14s", get_irq_desc_chip(desc)->name);
seq_printf(p, " %s", action->name);
for (action=action->next; action; action = action->next)
@ -54,7 +56,7 @@ int show_interrupts(struct seq_file *p, void *v)
seq_putc(p, '\n');
skip:
raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
raw_spin_unlock_irqrestore(&desc->lock, flags);
} else if (i == NR_IRQS)
seq_putc(p, '\n');
@ -360,10 +362,10 @@ EXPORT_SYMBOL(um_request_irq);
EXPORT_SYMBOL(reactivate_fd);
/*
* irq_chip must define (startup || enable) &&
* (shutdown || disable) && end
* irq_chip must define at least enable/disable and ack when
* the edge handler is used.
*/
static void dummy(unsigned int irq)
static void dummy(struct irq_data *d)
{
}
@ -371,20 +373,17 @@ static void dummy(unsigned int irq)
static struct irq_chip normal_irq_type = {
.name = "SIGIO",
.release = free_irq_by_irq_and_dev,
.disable = dummy,
.enable = dummy,
.ack = dummy,
.end = dummy
.irq_disable = dummy,
.irq_enable = dummy,
.irq_ack = dummy,
};
static struct irq_chip SIGVTALRM_irq_type = {
.name = "SIGVTALRM",
.release = free_irq_by_irq_and_dev,
.shutdown = dummy, /* never called */
.disable = dummy,
.enable = dummy,
.ack = dummy,
.end = dummy
.irq_disable = dummy,
.irq_enable = dummy,
.irq_ack = dummy,
};
void __init init_IRQ(void)

30
arch/x86/Kconfig
View File

@ -64,8 +64,12 @@ config X86
select HAVE_TEXT_POKE_SMP
select HAVE_GENERIC_HARDIRQS
select HAVE_SPARSE_IRQ
select GENERIC_FIND_FIRST_BIT
select GENERIC_FIND_NEXT_BIT
select GENERIC_IRQ_PROBE
select GENERIC_PENDING_IRQ if SMP
select GENERIC_IRQ_SHOW
select IRQ_FORCED_THREADING
select USE_GENERIC_SMP_HELPERS if SMP
config INSTRUCTION_DECODER
@ -382,6 +386,8 @@ config X86_INTEL_CE
depends on X86_32
depends on X86_EXTENDED_PLATFORM
select X86_REBOOTFIXUPS
select OF
select OF_EARLY_FLATTREE
---help---
Select for the Intel CE media processor (CE4100) SOC.
This option compiles in support for the CE4100 SOC for settop
@ -811,7 +817,7 @@ config X86_LOCAL_APIC
config X86_IO_APIC
def_bool y
depends on X86_64 || SMP || X86_32_NON_STANDARD || X86_UP_APIC
depends on X86_64 || SMP || X86_32_NON_STANDARD || X86_UP_IOAPIC
config X86_VISWS_APIC
def_bool y
@ -1705,7 +1711,7 @@ config HAVE_ARCH_EARLY_PFN_TO_NID
depends on NUMA
config USE_PERCPU_NUMA_NODE_ID
def_bool X86_64
def_bool y
depends on NUMA
menu "Power management and ACPI options"
@ -2066,9 +2072,10 @@ config SCx200HR_TIMER
config OLPC
bool "One Laptop Per Child support"
depends on !X86_PAE
select GPIOLIB
select OLPC_OPENFIRMWARE
depends on !X86_64 && !X86_PAE
select OF
select OF_PROMTREE if PROC_DEVICETREE
---help---
Add support for detecting the unique features of the OLPC
XO hardware.
@ -2079,21 +2086,6 @@ config OLPC_XO1
---help---
Add support for non-essential features of the OLPC XO-1 laptop.
config OLPC_OPENFIRMWARE
bool "Support for OLPC's Open Firmware"
depends on !X86_64 && !X86_PAE
default n
select OF
help
This option adds support for the implementation of Open Firmware
that is used on the OLPC XO-1 Children's Machine.
If unsure, say N here.
config OLPC_OPENFIRMWARE_DT
bool
default y if OLPC_OPENFIRMWARE && PROC_DEVICETREE
select OF_PROMTREE
endif # X86_32
config AMD_NB

5
arch/x86/Kconfig.cpu
View File

@ -294,11 +294,6 @@ config X86_GENERIC
endif
config X86_CPU
def_bool y
select GENERIC_FIND_FIRST_BIT
select GENERIC_FIND_NEXT_BIT
#
# Define implied options from the CPU selection here
config X86_INTERNODE_CACHE_SHIFT

32
arch/x86/ia32/ia32entry.S
View File

@ -25,6 +25,8 @@
#define sysretl_audit ia32_ret_from_sys_call
#endif
.section .entry.text, "ax"
#define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8)
.macro IA32_ARG_FIXUP noebp=0
@ -126,26 +128,20 @@ ENTRY(ia32_sysenter_target)
*/
ENABLE_INTERRUPTS(CLBR_NONE)
movl %ebp,%ebp /* zero extension */
pushq $__USER32_DS
CFI_ADJUST_CFA_OFFSET 8
pushq_cfi $__USER32_DS
/*CFI_REL_OFFSET ss,0*/
pushq %rbp
CFI_ADJUST_CFA_OFFSET 8
pushq_cfi %rbp
CFI_REL_OFFSET rsp,0
pushfq
CFI_ADJUST_CFA_OFFSET 8
pushfq_cfi
/*CFI_REL_OFFSET rflags,0*/
movl 8*3-THREAD_SIZE+TI_sysenter_return(%rsp), %r10d
CFI_REGISTER rip,r10
pushq $__USER32_CS
CFI_ADJUST_CFA_OFFSET 8
pushq_cfi $__USER32_CS
/*CFI_REL_OFFSET cs,0*/
movl %eax, %eax
pushq %r10
CFI_ADJUST_CFA_OFFSET 8
pushq_cfi %r10
CFI_REL_OFFSET rip,0
pushq %rax
CFI_ADJUST_CFA_OFFSET 8
pushq_cfi %rax
cld
SAVE_ARGS 0,0,1
/* no need to do an access_ok check here because rbp has been
@ -182,11 +178,9 @@ sysexit_from_sys_call:
xorq %r9,%r9
xorq %r10,%r10
xorq %r11,%r11
popfq
CFI_ADJUST_CFA_OFFSET -8
popfq_cfi
/*CFI_RESTORE rflags*/
popq %rcx /* User %esp */
CFI_ADJUST_CFA_OFFSET -8
popq_cfi %rcx /* User %esp */
CFI_REGISTER rsp,rcx
TRACE_IRQS_ON
ENABLE_INTERRUPTS_SYSEXIT32
@ -421,8 +415,7 @@ ENTRY(ia32_syscall)
*/
ENABLE_INTERRUPTS(CLBR_NONE)
movl %eax,%eax
pushq %rax
CFI_ADJUST_CFA_OFFSET 8
pushq_cfi %rax
cld
/* note the registers are not zero extended to the sf.
this could be a problem. */
@ -851,4 +844,7 @@ ia32_sys_call_table:
.quad sys_fanotify_init
.quad sys32_fanotify_mark
.quad sys_prlimit64 /* 340 */
.quad sys_name_to_handle_at
.quad compat_sys_open_by_handle_at
.quad compat_sys_clock_adjtime
ia32_syscall_end:

10
arch/x86/include/asm/acpi.h
View File

@ -186,15 +186,7 @@ struct bootnode;
#ifdef CONFIG_ACPI_NUMA
extern int acpi_numa;
extern void acpi_get_nodes(struct bootnode *physnodes, unsigned long start,
unsigned long end);
extern int acpi_scan_nodes(unsigned long start, unsigned long end);
#define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
#ifdef CONFIG_NUMA_EMU
extern void acpi_fake_nodes(const struct bootnode *fake_nodes,
int num_nodes);
#endif
extern int x86_acpi_numa_init(void);
#endif /* CONFIG_ACPI_NUMA */
#define acpi_unlazy_tlb(x) leave_mm(x)

8
arch/x86/include/asm/amd_nb.h
View File

@ -16,16 +16,10 @@ struct bootnode;
extern bool early_is_amd_nb(u32 value);
extern int amd_cache_northbridges(void);
extern void amd_flush_garts(void);
extern int amd_numa_init(unsigned long start_pfn, unsigned long end_pfn);
extern int amd_scan_nodes(void);
extern int amd_numa_init(void);
extern int amd_get_subcaches(int);
extern int amd_set_subcaches(int, int);
#ifdef CONFIG_NUMA_EMU
extern void amd_fake_nodes(const struct bootnode *nodes, int nr_nodes);
extern void amd_get_nodes(struct bootnode *nodes);
#endif
struct amd_northbridge {
struct pci_dev *misc;
struct pci_dev *link;

42
arch/x86/include/asm/apic.h
View File

@ -220,7 +220,6 @@ extern void enable_IR_x2apic(void);
extern int get_physical_broadcast(void);
extern void apic_disable(void);
extern int lapic_get_maxlvt(void);
extern void clear_local_APIC(void);
extern void connect_bsp_APIC(void);
@ -228,7 +227,6 @@ extern void disconnect_bsp_APIC(int virt_wire_setup);
extern void disable_local_APIC(void);
extern void lapic_shutdown(void);
extern int verify_local_APIC(void);
extern void cache_APIC_registers(void);
extern void sync_Arb_IDs(void);
extern void init_bsp_APIC(void);
extern void setup_local_APIC(void);
@ -239,8 +237,7 @@ void register_lapic_address(unsigned long address);
extern void setup_boot_APIC_clock(void);
extern void setup_secondary_APIC_clock(void);
extern int APIC_init_uniprocessor(void);
extern void enable_NMI_through_LVT0(void);
extern int apic_force_enable(void);
extern int apic_force_enable(unsigned long addr);
/*
* On 32bit this is mach-xxx local
@ -261,7 +258,6 @@ static inline void lapic_shutdown(void) { }
#define local_apic_timer_c2_ok 1
static inline void init_apic_mappings(void) { }
static inline void disable_local_APIC(void) { }
static inline void apic_disable(void) { }
# define setup_boot_APIC_clock x86_init_noop
# define setup_secondary_APIC_clock x86_init_noop
#endif /* !CONFIG_X86_LOCAL_APIC */
@ -307,8 +303,6 @@ struct apic {
void (*setup_apic_routing)(void);
int (*multi_timer_check)(int apic, int irq);
int (*apicid_to_node)(int logical_apicid);
int (*cpu_to_logical_apicid)(int cpu);
int (*cpu_present_to_apicid)(int mps_cpu);
void (*apicid_to_cpu_present)(int phys_apicid, physid_mask_t *retmap);
void (*setup_portio_remap)(void);
@ -356,6 +350,23 @@ struct apic {
void (*icr_write)(u32 low, u32 high);
void (*wait_icr_idle)(void);
u32 (*safe_wait_icr_idle)(void);
#ifdef CONFIG_X86_32
/*
* Called very early during boot from get_smp_config(). It should
* return the logical apicid. x86_[bios]_cpu_to_apicid is
* initialized before this function is called.
*
* If logical apicid can't be determined that early, the function
* may return BAD_APICID. Logical apicid will be configured after
* init_apic_ldr() while bringing up CPUs. Note that NUMA affinity
* won't be applied properly during early boot in this case.
*/
int (*x86_32_early_logical_apicid)(int cpu);
/* determine CPU -> NUMA node mapping */
int (*x86_32_numa_cpu_node)(int cpu);
#endif
};
/*
@ -503,6 +514,11 @@ extern struct apic apic_noop;
extern struct apic apic_default;
static inline int noop_x86_32_early_logical_apicid(int cpu)
{
return BAD_APICID;
}
/*
* Set up the logical destination ID.
*
@ -522,7 +538,7 @@ static inline int default_phys_pkg_id(int cpuid_apic, int index_msb)
return cpuid_apic >> index_msb;
}
extern int default_apicid_to_node(int logical_apicid);
extern int default_x86_32_numa_cpu_node(int cpu);
#endif
@ -558,12 +574,6 @@ static inline void default_ioapic_phys_id_map(physid_mask_t *phys_map, physid_ma
*retmap = *phys_map;
}
/* Mapping from cpu number to logical apicid */
static inline int default_cpu_to_logical_apicid(int cpu)
{
return 1 << cpu;
}
static inline int __default_cpu_present_to_apicid(int mps_cpu)
{
if (mps_cpu < nr_cpu_ids && cpu_present(mps_cpu))
@ -596,8 +606,4 @@ extern int default_check_phys_apicid_present(int phys_apicid);
#endif /* CONFIG_X86_LOCAL_APIC */
#ifdef CONFIG_X86_32
extern u8 cpu_2_logical_apicid[NR_CPUS];
#endif
#endif /* _ASM_X86_APIC_H */

12
arch/x86/include/asm/apicdef.h
View File

@ -426,4 +426,16 @@ struct local_apic {
#else
#define BAD_APICID 0xFFFFu
#endif
enum ioapic_irq_destination_types {
dest_Fixed = 0,
dest_LowestPrio = 1,
dest_SMI = 2,
dest__reserved_1 = 3,
dest_NMI = 4,
dest_INIT = 5,
dest__reserved_2 = 6,
dest_ExtINT = 7
};
#endif /* _ASM_X86_APICDEF_H */

1
arch/x86/include/asm/bootparam.h
View File

@ -12,6 +12,7 @@
/* setup data types */
#define SETUP_NONE 0
#define SETUP_E820_EXT 1
#define SETUP_DTB 2
/* extensible setup data list node */
struct setup_data {

2
arch/x86/include/asm/cpufeature.h
View File

@ -160,6 +160,7 @@
#define X86_FEATURE_NODEID_MSR (6*32+19) /* NodeId MSR */
#define X86_FEATURE_TBM (6*32+21) /* trailing bit manipulations */
#define X86_FEATURE_TOPOEXT (6*32+22) /* topology extensions CPUID leafs */
#define X86_FEATURE_PERFCTR_CORE (6*32+23) /* core performance counter extensions */
/*
* Auxiliary flags: Linux defined - For features scattered in various
@ -279,6 +280,7 @@ extern const char * const x86_power_flags[32];
#define cpu_has_xsave boot_cpu_has(X86_FEATURE_XSAVE)
#define cpu_has_hypervisor boot_cpu_has(X86_FEATURE_HYPERVISOR)
#define cpu_has_pclmulqdq boot_cpu_has(X86_FEATURE_PCLMULQDQ)
#define cpu_has_perfctr_core boot_cpu_has(X86_FEATURE_PERFCTR_CORE)
#if defined(CONFIG_X86_INVLPG) || defined(CONFIG_X86_64)
# define cpu_has_invlpg 1

2
arch/x86/include/asm/e820.h
View File

@ -96,7 +96,7 @@ extern void e820_setup_gap(void);
extern int e820_search_gap(unsigned long *gapstart, unsigned long *gapsize,
unsigned long start_addr, unsigned long long end_addr);
struct setup_data;
extern void parse_e820_ext(struct setup_data *data, unsigned long pa_data);
extern void parse_e820_ext(struct setup_data *data);
#if defined(CONFIG_X86_64) || \
(defined(CONFIG_X86_32) && defined(CONFIG_HIBERNATION))

5
arch/x86/include/asm/entry_arch.h
View File

@ -16,10 +16,13 @@ BUILD_INTERRUPT(call_function_single_interrupt,CALL_FUNCTION_SINGLE_VECTOR)
BUILD_INTERRUPT(irq_move_cleanup_interrupt,IRQ_MOVE_CLEANUP_VECTOR)
BUILD_INTERRUPT(reboot_interrupt,REBOOT_VECTOR)
.irpc idx, "01234567"
.irp idx,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, \
16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31
.if NUM_INVALIDATE_TLB_VECTORS > \idx
BUILD_INTERRUPT3(invalidate_interrupt\idx,
(INVALIDATE_TLB_VECTOR_START)+\idx,
smp_invalidate_interrupt)
.endif
.endr
#endif

6
arch/x86/include/asm/frame.h
View File

@ -7,14 +7,12 @@
frame pointer later */
#ifdef CONFIG_FRAME_POINTER
.macro FRAME
pushl %ebp
CFI_ADJUST_CFA_OFFSET 4
pushl_cfi %ebp
CFI_REL_OFFSET ebp,0
movl %esp,%ebp
.endm
.macro ENDFRAME
popl %ebp
CFI_ADJUST_CFA_OFFSET -4
popl_cfi %ebp
CFI_RESTORE ebp
.endm
#else

22
arch/x86/include/asm/futex.h
View File

@ -37,7 +37,7 @@
"+m" (*uaddr), "=&r" (tem) \
: "r" (oparg), "i" (-EFAULT), "1" (0))
static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@ -48,7 +48,7 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_BSWAP)
@ -109,9 +109,10 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
return ret;
}
static inline int futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval,
int newval)
static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
int ret = 0;
#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_BSWAP)
/* Real i386 machines have no cmpxchg instruction */
@ -119,21 +120,22 @@ static inline int futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval,
return -ENOSYS;
#endif
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
asm volatile("1:\t" LOCK_PREFIX "cmpxchgl %3, %1\n"
asm volatile("1:\t" LOCK_PREFIX "cmpxchgl %4, %2\n"
"2:\t.section .fixup, \"ax\"\n"
"3:\tmov %2, %0\n"
"3:\tmov %3, %0\n"
"\tjmp 2b\n"
"\t.previous\n"
_ASM_EXTABLE(1b, 3b)
: "=a" (oldval), "+m" (*uaddr)
: "i" (-EFAULT), "r" (newval), "0" (oldval)
: "+r" (ret), "=a" (oldval), "+m" (*uaddr)
: "i" (-EFAULT), "r" (newval), "1" (oldval)
: "memory"
);
return oldval;
*uval = oldval;
return ret;
}
#endif

24
arch/x86/include/asm/hw_irq.h
View File

@ -45,6 +45,30 @@ extern void invalidate_interrupt4(void);
extern void invalidate_interrupt5(void);
extern void invalidate_interrupt6(void);
extern void invalidate_interrupt7(void);
extern void invalidate_interrupt8(void);
extern void invalidate_interrupt9(void);
extern void invalidate_interrupt10(void);
extern void invalidate_interrupt11(void);
extern void invalidate_interrupt12(void);
extern void invalidate_interrupt13(void);
extern void invalidate_interrupt14(void);
extern void invalidate_interrupt15(void);
extern void invalidate_interrupt16(void);
extern void invalidate_interrupt17(void);
extern void invalidate_interrupt18(void);
extern void invalidate_interrupt19(void);
extern void invalidate_interrupt20(void);
extern void invalidate_interrupt21(void);
extern void invalidate_interrupt22(void);
extern void invalidate_interrupt23(void);
extern void invalidate_interrupt24(void);
extern void invalidate_interrupt25(void);
extern void invalidate_interrupt26(void);
extern void invalidate_interrupt27(void);
extern void invalidate_interrupt28(void);
extern void invalidate_interrupt29(void);
extern void invalidate_interrupt30(void);
extern void invalidate_interrupt31(void);
extern void irq_move_cleanup_interrupt(void);
extern void reboot_interrupt(void);

6
arch/x86/include/asm/init.h
View File

@ -11,8 +11,8 @@ kernel_physical_mapping_init(unsigned long start,
unsigned long page_size_mask);
extern unsigned long __initdata e820_table_start;
extern unsigned long __meminitdata e820_table_end;
extern unsigned long __meminitdata e820_table_top;
extern unsigned long __initdata pgt_buf_start;
extern unsigned long __meminitdata pgt_buf_end;
extern unsigned long __meminitdata pgt_buf_top;
#endif /* _ASM_X86_INIT_32_H */

44
arch/x86/include/asm/io_apic.h
View File

@ -63,17 +63,6 @@ union IO_APIC_reg_03 {
} __attribute__ ((packed)) bits;
};
enum ioapic_irq_destination_types {
dest_Fixed = 0,
dest_LowestPrio = 1,
dest_SMI = 2,
dest__reserved_1 = 3,
dest_NMI = 4,
dest_INIT = 5,
dest__reserved_2 = 6,
dest_ExtINT = 7
};
struct IO_APIC_route_entry {
__u32 vector : 8,
delivery_mode : 3, /* 000: FIXED
@ -106,6 +95,10 @@ struct IR_IO_APIC_route_entry {
index : 15;
} __attribute__ ((packed));
#define IOAPIC_AUTO -1
#define IOAPIC_EDGE 0
#define IOAPIC_LEVEL 1
#ifdef CONFIG_X86_IO_APIC
/*
@ -150,11 +143,6 @@ extern int timer_through_8259;
#define io_apic_assign_pci_irqs \
(mp_irq_entries && !skip_ioapic_setup && io_apic_irqs)
extern u8 io_apic_unique_id(u8 id);
extern int io_apic_get_unique_id(int ioapic, int apic_id);
extern int io_apic_get_version(int ioapic);
extern int io_apic_get_redir_entries(int ioapic);
struct io_apic_irq_attr;
extern int io_apic_set_pci_routing(struct device *dev, int irq,
struct io_apic_irq_attr *irq_attr);
@ -162,6 +150,8 @@ void setup_IO_APIC_irq_extra(u32 gsi);
extern void ioapic_and_gsi_init(void);
extern void ioapic_insert_resources(void);
int io_apic_setup_irq_pin(unsigned int irq, int node, struct io_apic_irq_attr *attr);
extern struct IO_APIC_route_entry **alloc_ioapic_entries(void);
extern void free_ioapic_entries(struct IO_APIC_route_entry **ioapic_entries);
extern int save_IO_APIC_setup(struct IO_APIC_route_entry **ioapic_entries);
@ -186,6 +176,8 @@ extern void __init pre_init_apic_IRQ0(void);
extern void mp_save_irq(struct mpc_intsrc *m);
extern void disable_ioapic_support(void);
#else /* !CONFIG_X86_IO_APIC */
#define io_apic_assign_pci_irqs 0
@ -199,6 +191,26 @@ static inline int mp_find_ioapic(u32 gsi) { return 0; }
struct io_apic_irq_attr;
static inline int io_apic_set_pci_routing(struct device *dev, int irq,
struct io_apic_irq_attr *irq_attr) { return 0; }
static inline struct IO_APIC_route_entry **alloc_ioapic_entries(void)
{
return NULL;
}
static inline void free_ioapic_entries(struct IO_APIC_route_entry **ent) { }
static inline int save_IO_APIC_setup(struct IO_APIC_route_entry **ent)
{
return -ENOMEM;
}
static inline void mask_IO_APIC_setup(struct IO_APIC_route_entry **ent) { }
static inline int restore_IO_APIC_setup(struct IO_APIC_route_entry **ent)
{
return -ENOMEM;
}
static inline void mp_save_irq(struct mpc_intsrc *m) { };
static inline void disable_ioapic_support(void) { }
#endif
#endif /* _ASM_X86_IO_APIC_H */

8
arch/x86/include/asm/ipi.h
View File

@ -123,10 +123,6 @@ extern void default_send_IPI_mask_sequence_phys(const struct cpumask *mask,
int vector);
extern void default_send_IPI_mask_allbutself_phys(const struct cpumask *mask,
int vector);
extern void default_send_IPI_mask_sequence_logical(const struct cpumask *mask,
int vector);
extern void default_send_IPI_mask_allbutself_logical(const struct cpumask *mask,
int vector);
/* Avoid include hell */
#define NMI_VECTOR 0x02
@ -150,6 +146,10 @@ static inline void __default_local_send_IPI_all(int vector)
}
#ifdef CONFIG_X86_32
extern void default_send_IPI_mask_sequence_logical(const struct cpumask *mask,
int vector);
extern void default_send_IPI_mask_allbutself_logical(const struct cpumask *mask,
int vector);
extern void default_send_IPI_mask_logical(const struct cpumask *mask,
int vector);
extern void default_send_IPI_allbutself(int vector);

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