User space can request hardware and/or software time stamping.
Reporting of the result(s) via a new control message is enabled
separately for each field in the message because some of the
fields may require additional computation and thus cause overhead.
User space can tell the different kinds of time stamps apart
and choose what suits its needs.
When a TX timestamp operation is requested, the TX skb will be cloned
and the clone will be time stamped (in hardware or software) and added
to the socket error queue of the skb, if the skb has a socket
associated with it.
The actual TX timestamp will reach userspace as a RX timestamp on the
cloned packet. If timestamping is requested and no timestamping is
done in the device driver (potentially this may use hardware
timestamping), it will be done in software after the device's
start_hard_xmit routine.
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This is based upon a report from Chris Torek and his initial patch.
From Chris's report:
--------------------
This came up in testing kgdb, using the built-in tests -- turn
on CONFIG_KGDB_TESTS, then
echo V1 > /sys/module/kgdbts/parameters/kgdbts
-- but it would affect using kgdb if you were debugging and looking
at bad pointers.
--------------------
When we get a copy_{from,to}_user() request and the %asi is set to
something other than ASI_AIUS (which is userspace) then we branch off
to a routine called memcpy_user_stub(). It just does a straight
memcpy since we are copying from kernel to kernel in this case.
The logic was that since source and destination are both kernel
pointers we don't need to have exception checks.
But for what probe_kernel_{read,write}() is trying to do, we have to
have the checks, otherwise things like kgdb bad kernel pointer
accesses don't do the right thing.
Signed-off-by: David S. Miller <davem@davemloft.net>
This is an implementation of a suggestion made by Chris Torek:
--------------------
Something else I noticed in passing: the EX and EX_LD/EX_ST macros
scattered throughout the various .S files make a fair bit of .fixup
code, all of which does the same thing. At the cost of one symbol
in copy_in_user.S, you could just have one common two-instruction
retl-and-mov-1 fixup that they all share.
--------------------
The following is with a defconfig build:
text data bss dec hex filename
3972767 344024 584449 4901240 4ac978 vmlinux.orig
3968887 344024 584449 4897360 4aba50 vmlinux
Signed-off-by: David S. Miller <davem@davemloft.net>
They can't be used for profiling and NMI watchdog currently
since they lack the counter overflow interrupt.
Signed-off-by: David S. Miller <davem@davemloft.net>
This builds upon eeabac7386
("sparc64: Validate kernel generated fault addresses on sparc64.")
Upon further consideration, we actually should never see any
fault addresses for 32-bit tasks with the upper 32-bits set.
If it does every happen, by definition it's a bug. Whatever
context created that fault would only have that fault satisfied
if we used the full 64-bit address. If we truncate it, we'll
always fault the wrong address and we'll always loop faulting
forever.
So catch such conditions and mark them as errors always. Log
the error and fail the fault.
Signed-off-by: David S. Miller <davem@davemloft.net>
In order to handle all of the cases of address calculation overflow
properly, we run sparc 32-bit processes in "address masking" mode
when running on a 64-bit kernel.
Address masking mode zeros out the top 32-bits of the address
calculated for every load and store instruction.
However, when we're in privileged mode we have to run with that
address masking mode disabled even when accessing userspace from
the kernel.
To "simulate" the address masking mode we clear the top-bits by
hand for 32-bit processes in the fault handler.
It is the responsibility of code in the compat layer to properly
zero extend addresses used to access userspace. If this isn't
followed properly we can get into a fault loop.
Say that the user address is 0xf0000000 but for whatever reason
the kernel code sign extends this to 64-bit, and then the kernel
tries to access the result.
In such a case we'll fault on address 0xfffffffff0000000 but the fault
handler will process that fault as if it were to address 0xf0000000.
We'll loop faulting forever because the fault never gets satisfied.
So add a check specifically for this case, when the kernel is faulting
on a user address access and the addresses don't match up.
This code path is sufficiently slow path, and this bug is sufficiently
painful to diagnose, that this kind of bug check is warranted.
Signed-off-by: David S. Miller <davem@davemloft.net>
When we're idling in NOHZ mode, timer interrupts are not running.
Evidence of processing timer interrupts is what the NMI watchdog
uses to determine if the CPU is stuck.
On Niagara, we'll yield the cpu. This will make the cpu, at
worst, hang out in the hypervisor until an interrupt arrives.
This will prevent the NMI watchdog timer from firing.
However on non-Niagara we just loop executing instructions
which will cause the NMI watchdog to keep firing. It won't
see timer interrupts happening so it will think the cpu is
stuck.
Fix this by touching the NMI watchdog in the cpu idle loop
on non-Niagara machines.
Signed-off-by: David S. Miller <davem@davemloft.net>
It all lives in the oprofile support code currently and we will need
to share this stuff with NMI watchdog and perf_counter support.
Signed-off-by: David S. Miller <davem@davemloft.net>
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
i2c: Warn on deprecated binding model use
eeprom: More consistent symbol names
eeprom: Move 93cx6 eeprom driver to /drivers/misc/eeprom
spi: Move at25 (for SPI eeproms) to /drivers/misc/eeprom
i2c: Move old eeprom driver to /drivers/misc/eeprom
i2c: Move at24 to drivers/misc/eeprom
i2c: Quilt tree has moved
i2c: Delete many unused adapter IDs
i2c: Delete 10 unused driver IDs
Now that all EEPROM drivers live in the same place, let's harmonize
their symbol names.
Also fix eeprom's dependencies, it definitely needs sysfs, and is no
longer experimental after many years in the kernel tree.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Changeset d7e51e6689 ("sparseirq: make
some func to be used with genirq") broke the build on sparc64:
arch/sparc/kernel/irq_64.c: In function ‘show_interrupts’:
arch/sparc/kernel/irq_64.c:188: error: ‘struct kernel_stat’ has no member named ‘irqs’
make[1]: *** [arch/sparc/kernel/irq_64.o] Error 1
Fix by using the kstat_irqs_cpu() interface.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Changeset d7e51e6689 ("sparseirq: make
some func to be used with genirq") broke the build on sparc64:
arch/sparc/kernel/time_64.c: In function ‘timer_interrupt’:
arch/sparc/kernel/time_64.c:732: error: implicit declaration of function ‘kstat_incr_irqs_this_cpu’
make[1]: *** [arch/sparc/kernel/time_64.o] Error 1
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
If we do a userspace access from kernel mode, and get a
data access exception, we need to check the exception
table just like a normal fault does.
The spitfire DAX handler was doing this, but such logic
was missing from the sun4v DAX code.
Reported-by: Dennis Gilmore <dgilmore@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
sparc64 needs sign-extended function parameters. We have to enable
the system call wrappers.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is only one clock board, so use -1 as the 'id' so we get just
the base name as the LED device name string.
There are multiple FHC boards potentially in a system so use the board
number as the 'id' value for that case.
Reported-by: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: David S. Miller <davem@davemloft.net>
Previously PeeCeeI.o was a library but it
was always pulled in due to insw and friends being exported
(at least for a modular kernel).
But this resulted in modpost failures if there where no in-kernel
users because then insw & friends were not linked in.
Fix this by including PeeCeeI.o in the kernel unconditionally.
The only drawback for this solution is that a nonmodular kernel
will always include insw & friends no matter if they are in use or not.
Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Meelis reported that on his box /proc/cpuinfo started
to reported "Unknow CPU" and the same did the boot messages.
It was a stupid bug I introduced when merging
cpu.c for 32 and 64 bit.
The code did an array reference where it had to search
for the right index.
Reported-by: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Impact: fix build errors
Since the SPARSE IRQS changes redefined how the kstat irqs are
organized, arch's must use the new accessor function:
kstat_incr_irqs_this_cpu(irq, DESC);
If CONFIG_SPARSE_IRQS is set, then DESC is a pointer to the
irq_desc which has a pointer to the kstat_irqs. If not, then
the .irqs field of struct kernel_stat is used instead.
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
* 'syscalls' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: (44 commits)
[CVE-2009-0029] s390 specific system call wrappers
[CVE-2009-0029] System call wrappers part 33
[CVE-2009-0029] System call wrappers part 32
[CVE-2009-0029] System call wrappers part 31
[CVE-2009-0029] System call wrappers part 30
[CVE-2009-0029] System call wrappers part 29
[CVE-2009-0029] System call wrappers part 28
[CVE-2009-0029] System call wrappers part 27
[CVE-2009-0029] System call wrappers part 26
[CVE-2009-0029] System call wrappers part 25
[CVE-2009-0029] System call wrappers part 24
[CVE-2009-0029] System call wrappers part 23
[CVE-2009-0029] System call wrappers part 22
[CVE-2009-0029] System call wrappers part 21
[CVE-2009-0029] System call wrappers part 20
[CVE-2009-0029] System call wrappers part 19
[CVE-2009-0029] System call wrappers part 18
[CVE-2009-0029] System call wrappers part 17
[CVE-2009-0029] System call wrappers part 16
[CVE-2009-0029] System call wrappers part 15
...
Add swab.h to kbuild.asm and remove the individual entries from
each arch, mark as unifdef as some arches have some kernel-only
bits inside.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Remove __attribute__((weak)) from common code sys_pipe implemantation.
IA64, ALPHA, SUPERH (32bit) and SPARC (32bit) have own implemantations
with the same name. Just rename them.
For sys_pipe2 there is no architecture specific implementation.
Cc: Richard Henderson <rth@twiddle.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
sparc_ksyms_64.c includes asm/spinlock.h directly, which is
a no-no.
Even better, none of these exports are even necessary. All
of these functions are inlines.
Reported by Meelis Roos and Alexander Beregalov.
Signed-off-by: David S. Miller <davem@davemloft.net>
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
sparc64: Fix cpumask related build failure
smp_call_function_single(): be slightly less stupid, fix
smp_call_function_single(): be slightly less stupid
rcu: fix bug in rcutorture system-shutdown code
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc: Fix asm/signal.h for 32-bit.
sparc: Eliminate PROMLIB_INTERNAL as it does nothing
sparc: Kill exports of prom internal functions
sparc64: move EXPORT_SYMBOL to the symbols definition
sparc: move EXPORT_SYMBOL to the symbols definition
sparc: Create a new file lib/ksyms.c and add export of all symbols defined in assembler in lib/ to this file.
sparc: Most unaligned_64.c tweaks for branch tracer warnings.
sparc: Fix sun4d_irq.c build.
sparc: Update 32-bit defconfig.
sparc64: fix warnings in psycho_common after ull conversion
Impact: cleanup, update to new cpumask API
Irq_desc.affinity and irq_desc.pending_mask are now cpumask_var_t's
so access to them should be using the new cpumask API.
Signed-off-by: Mike Travis <travis@sgi.com>
cpumask_of_pcibus() was missing - this triggers on NUMA builds.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Fix a 32-bit sparc regression reported by Robert Reif.
_NSIG_BPW needs to be 32 for 32-bit and 64 for 64-bit
Tested-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
__prom_getchild() and __prom_getsibling() are not used anywhere, so
don't export them.
Signed-off-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move all applicable EXPORT_SYMBOL()s to the file where the respective
symbol is defined.
Removed all the includes that are no longer needed in sparc_ksyms_64.c
Comment all remaining EXPORT_SYMBOL()s in sparc_ksyms_64.c
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Additions by Julian Calaby:
* Moved EXPORT_SYMBOL()s for prom functions to their rightful places.
* Made some minor cleanups to the includes and comments of sparc_ksyms_64.c
* Updated and tidied commit message.
* Rebased patch over sparc-2.6.git HEAD.
* Ensured that all modified files have the correct includes.
Signed-off-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move all applicable EXPORT_SYMBOL()s to the file where the respective
symbol is defined.
Removed all the includes that are no longer needed in sparc_ksyms_32.c
Comment all remaining EXPORT_SYMBOL()s in sparc_ksyms_32.c
Two symbols are shared with sparc64 thus the exports were removed from
the sparc_ksyms_64.c too, along with the include their ommission made
redundant.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Additions by Julian Calaby:
* Moved EXPORT_SYMBOL()s for prom functions to their rightful places.
* Made some minor cleanups to the includes and comments of sparc_ksyms_32.c
* Made another subtraction from sparc_ksyms_64.c
* Updated and tidied commit message.
* Rebased patch over sparc-2.6.git HEAD.
* Ensured that all modified files have the correct includes.
Signed-off-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove the duplicate entries from kernel/sparc_ksyms_*.c
The rationale behind this is that the EXPORT_SYMBOL() should be close to
their definition and we cannot add designate a symbol to be exported in
assembler so at least put it in a file in the same directory.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Additions by Julian Calaby:
* Rebased over sparc-2.6.git HEAD
Signed-off-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
arch/sparc/kernel/unaligned_64.c: In function 'handle_lddfmna':
arch/sparc/kernel/unaligned_64.c:592: warning: 'second' may be used uninitialized in this function
Signed-off-by: David S. Miller <davem@davemloft.net>
After conversion to use unsigned long long for u64
I saw following warnings:
CC arch/sparc/kernel/psycho_common.o
arch/sparc/kernel/psycho_common.c: In function `psycho_check_stc_error':
arch/sparc/kernel/psycho_common.c:104: warning: long long unsigned int format, long unsigned int arg (arg 4)
arch/sparc/kernel/psycho_common.c:104: warning: long long unsigned int format, long unsigned int arg (arg 5)
arch/sparc/kernel/psycho_common.c:114: warning: long long unsigned int format, long unsigned int arg (arg 4)
arch/sparc/kernel/psycho_common.c:114: warning: long long unsigned int format, long unsigned int arg (arg 5)
arch/sparc/kernel/psycho_common.c:114: warning: long long unsigned int format, long unsigned int arg (arg 6)
arch/sparc/kernel/psycho_common.c:114: warning: long long unsigned int format, long unsigned int arg (arg 7)
arch/sparc/kernel/psycho_common.c: In function `psycho_dump_iommu_tags_and_data':
arch/sparc/kernel/psycho_common.c:187: warning: long long unsigned int format, long unsigned int arg (arg 8)
arch/sparc/kernel/psycho_common.c:193: warning: long long unsigned int format, long unsigned int arg (arg 6)
arch/sparc/kernel/psycho_common.c: In function `psycho_pcierr_intr':
arch/sparc/kernel/psycho_common.c:333: warning: long long unsigned int format, long unsigned int arg (arg 3)
arch/sparc/kernel/psycho_common.c:333: warning: long long unsigned int format, long unsigned int arg (arg 4)
This is due to different integer promotion in my 32 bit hosted gcc.
The fix is to force a few constants to ULL.
The following stands out from the rest:
+#define PSYCHO_IOMMU_TAG_VPAGE 0x7ffffULL
+#define PSYCHO_IOMMU_DATA_PPAGE 0xfffffffULL
They were needed otherwise the expression:
(data_val & PSYCHO_IOMMU_DATA_PPAGE) << IOMMU_PAGE_SHIFT)
were promoted to a unsigned long and not a unsigned long long as expected.
I tried the alternative solution and made IOMMU_PAGE_SHIFT an ULL but that did not help.
The only way gcc would make this expression an unsigned long long was to
define PSYCHO_IOMMU_DATA_PPAGE as ULL. The alternative to add a cast was
not considered a valid solution.
We had this issue in two places and this were the only places the above
two constants are used.
A small coding style diff sneaked in too.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
In preparation for the introduction of a generic swap() macro.
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc64: Work around branch tracer warning.
sparc64: Fix unsigned long long warnings in drivers.
sparc64: Use unsigned long long for u64.
sparc: refactor code in fault_32.c
sparc64: refactor code in init_64.c
sparc64: refactor code in viohs.c
sparc: make proces_ver_nack a bit more readable
As reported by Sam Ravnborg, Gcc-3.4.5 does not handle:
if (get_user() || get_user())
with the new branch tracer enabled.
Just seperate it out into seperate statements for now
so people can get work done.
Signed-off-by: David S. Miller <davem@davemloft.net>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (24 commits)
trivial: chack -> check typo fix in main Makefile
trivial: Add a space (and a comma) to a printk in 8250 driver
trivial: Fix misspelling of "firmware" in docs for ncr53c8xx/sym53c8xx
trivial: Fix misspelling of "firmware" in powerpc Makefile
trivial: Fix misspelling of "firmware" in usb.c
trivial: Fix misspelling of "firmware" in qla1280.c
trivial: Fix misspelling of "firmware" in a100u2w.c
trivial: Fix misspelling of "firmware" in megaraid.c
trivial: Fix misspelling of "firmware" in ql4_mbx.c
trivial: Fix misspelling of "firmware" in acpi_memhotplug.c
trivial: Fix misspelling of "firmware" in ipw2100.c
trivial: Fix misspelling of "firmware" in atmel.c
trivial: Fix misspelled firmware in Kconfig
trivial: fix an -> a typos in documentation and comments
trivial: fix then -> than typos in comments and documentation
trivial: update Jesper Juhl CREDITS entry with new email
trivial: fix singal -> signal typo
trivial: Fix incorrect use of "loose" in event.c
trivial: printk: fix indentation of new_text_line declaration
trivial: rtc-stk17ta8: fix sparse warning
...
The atomic_t type cannot currently be used in some header files because it
would create an include loop with asm/atomic.h. Move the type definition
to linux/types.h to break the loop.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Morton wrote:
People keep on doing
printk("%llu", some_u64);
testing it only on x86_64 and this generates a warning storm on
powerpc, sparc64, etc. Because they use `long', not `long long'.
Quite a few 64-bit architectures are using `long' for their
s64/u64 types. We should convert them all to `long long'.
Update types.h so we use unsigned long long for u64 and
fix all warnings in sparc64 code.
Tested with an allnoconfig, defconfig and allmodconfig builds.
This patch introduces additional warnings in several drivers.
These will be dealt with in separate patches.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The sparc allmodconfig build broke due to enabling of the
branch_tracer that does some very clever things with
all if conditions. This caused my gcc 3.4.5 to be so confused that
it emitted a warning:
arch/sparc/mm/fault_32.c: In function `do_sparc_fault':
arch/sparc/mm/fault_32.c:176: warning: 'fixup' might be used uninitialized in this function
And with -Werror this broke the build.
Refactor code so it:
1) becomes more readable
2) no longer emit a warning with the branch_tracer enabled
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The sparc64 allmodconfig build broke due to enabling of the
branch_tracer that does some very clever things with
all if conditions. This caused my gcc 3.4.5 to be so confused that
it emitted two warnings:
arch/sparc/mm/init_64.c: In function `update_mmu_cache':
arch/sparc/mm/init_64.c:271: warning: 'pg_flags' might be used uninitialized in this function
arch/sparc/mm/init_64.c:272: warning: 'page' might be used uninitialized in this function
And with -Werror this broke the build.
Refactor code so it:
1) becomes more readable
2) no longer emit a warning with the branch_tracer enabled
The refactoring uses a small helper function (flush_dcache()).
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The sparc64 allmodconfig build broke due to enabling of the
branch_tracer that does some very clever things with
all if conditions. This caused my gcc 3.4.5 to be so confused that
it emitted a warning:
arch/sparc/kernel/viohs.c: In function `vio_control_pkt_engine':
arch/sparc/kernel/viohs.c:335: warning: 'nver' might be used uninitialized in this function
And with -Werror this broke the build.
Refactor code so it:
1) becomes more readable
2) no longer emit a warning with the branch_tracer enabled
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Impact: clean up
The code in process_ver_nack is a little obfuscated. This change
makes it a bit more readable by humans. It removes the complex
if statement and replaces it with a cleaner flow of control.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
When CONFIG_PROC_FS is unset, include/linux/interrupt.h defines
init_irq_proc() as an empty function.
arch/sparc/kernel/irq_32.c defines this function unconditionally.
Fix the latter so that it only defines this function when CONFIG_PROC_FS
is set.
This fixes the following error:
arch/sparc/kernel/irq_32.c:672: error: redefinition of 'init_irq_proc'
include/linux/interrupt.h:461: error: previous definition of
'init_irq_proc' was here
This was found using randconfig builds.
Signed-off-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
prom_nextprop() and prom_firstprop() have slightly different calling
conventions in 32 and 64 bit SPARC.
prom_common.c uses a ifdef guard to ensure that these functions are
called correctly.
Adjust code to eliminate this ifdef by using a calling convention that
is compatible with both 32 and 64 bit SPARC.
Signed-off-by: Julian Calaby <julian.calaby@gmail.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
As noticed by Sam Ravnborg, these aren't use for anything.
Neither the kernel nor userland make a reference to this
family of header files.
So just get rid of them.
Signed-off-by: David S. Miller <davem@davemloft.net>
Use 64BIT config entry to distinguish between 32 and 64bit builds
instead of relying on the ARCH setting. Using sparc64 as ARCH still
forces 64BIT on.
Inspired by the x86 and s390 configs.
[ Integrated CONFIG_64BIT help text suggestions from Sam -DaveM ]
Signed-off-by: Bastian Blank <waldi@debian.org>
Tested-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The ony difference is the size of the mode.
sparc has extra padding to compensate for this.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
* 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (77 commits)
x86: setup_per_cpu_areas() cleanup
cpumask: fix compile error when CONFIG_NR_CPUS is not defined
cpumask: use alloc_cpumask_var_node where appropriate
cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t
x86: use cpumask_var_t in acpi/boot.c
x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids
sched: put back some stack hog changes that were undone in kernel/sched.c
x86: enable cpus display of kernel_max and offlined cpus
ia64: cpumask fix for is_affinity_mask_valid()
cpumask: convert RCU implementations, fix
xtensa: define __fls
mn10300: define __fls
m32r: define __fls
h8300: define __fls
frv: define __fls
cris: define __fls
cpumask: CONFIG_DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
cpumask: zero extra bits in alloc_cpumask_var_node
cpumask: replace for_each_cpu_mask_nr with for_each_cpu in kernel/time/
cpumask: convert mm/
...
Fix following warning:
traps.h:23: extern's make no sense in userspace
Add an ifdef __KERNEL__ block that cover the
extern definition and a few related things that neither
is for userspace.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings in byteorder.h:
byteorder.h:4: include of <linux/types.h> is preferred over <asm/types.h>
byteorder.h:9: leaks CONFIG_SPARC32 to userspace where it is not valid
byteorder.h:13: leaks CONFIG_SPARC64 to userspace where it is not valid
byteorder.h:14: found __[us]{8,16,32,64} type without #include <linux/types.h>
byteorder.h:47: leaks CONFIG_SPARC64 to userspace where it is not valid
- changed to use include <linux/types.h> as suggested
- use preprocessor defined symbols to distingush between 32 and 64 bit
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings in jsflash.h:
jsflash.h:11: include of <linux/types.h> is preferred over <asm/types.h>
jsflash.h:24: found __[us]{8,16,32,64} type without #include <linux/types.h>
Fixed by changing the include to <linux/types.h>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
After the preparational steps the unification was simple.
The linux_prom_pci_registers definition did not look like
it could be unified at first look since the structure is assigned
using prop_getproperty() / of_get_property() so the structure
is assumed to come direct form the prom.
The LINUX_OPPROM_MAGIC was kept even if it is not used by the kernel
on the assumption that userspace may require it.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Align the sparc and sparc64 versions so differences are minimal.
A few data types are changed to better reflect there actual usage.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Looks like leftovers from the removal of the special ebus layer.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Trivial unification where the sparc64 specific
parts are protected using a signle ifdef/endif pair.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The two ptrace.h implementations are very alike but
the small differences required two set of ifdef/else/endif pairs.
The definition of reg_window32 could have been shared but
that would have required several updates in sparc32 code as
all printk formatting for example assume it is longs.
sparc_stackf looked like anohter candidate to share if the 32
bit was renamed to sparc_stackf32.
But it contains two pointers in the sparc32 version which would
have been 64 bit in the sparc64 version so it was non-trivial.
Using a set of accessor macros could do the trick if pursued later.
The sparc64 specific definitions are not protected by
ifdef - as it should not be required to do so.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
With the renamed types in place the unification was straightforward.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Renaming a few types to contain a 32 suffix makes the
type names compatible with sparc64 and thus makes sharing
between the two a lot easier.
Note: None of these definitions are expected part of the
stable ABI towards userspace.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
They were almost identical and with the preapration
patch nothing was needed to be added.
The unified version contains a few sparc64 only definitions
but they are kept as is and not protected by ifdef/endif.
The unified version exports a bit more to userspace then the
32 bit version did.
This is not considered fatal.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
o add a sparc32 only definition
o fix a few style issues (white space errors etc).
o include compiler.h (for __user)
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
To my suprise struct stat64 was not equal on sparc 32 and sparc64,
so there was really nothing to share here.
Unify the files by adding their respective content to stat.h.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
sparc32 does not define __ARCH_WANT_OLD_STAT so
we do not use this structure neither do we support it.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The posix types differed so much in their definition
that they are kept in separate blocks.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is no need to define a config symbol if
it is never set to any value. Undefined symbols equal
to 'n'.
GENERIC_GPIO looks like it is similar but
it is set using select in some other file so
it must be kept.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
* 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (66 commits)
x86: export vector_used_by_percpu_irq
x86: use logical apicid in x2apic_cluster's x2apic_cpu_mask_to_apicid_and()
sched: nominate preferred wakeup cpu, fix
x86: fix lguest used_vectors breakage, -v2
x86: fix warning in arch/x86/kernel/io_apic.c
sched: fix warning in kernel/sched.c
sched: move test_sd_parent() to an SMP section of sched.h
sched: add SD_BALANCE_NEWIDLE at MC and CPU level for sched_mc>0
sched: activate active load balancing in new idle cpus
sched: bias task wakeups to preferred semi-idle packages
sched: nominate preferred wakeup cpu
sched: favour lower logical cpu number for sched_mc balance
sched: framework for sched_mc/smt_power_savings=N
sched: convert BALANCE_FOR_xx_POWER to inline functions
x86: use possible_cpus=NUM to extend the possible cpus allowed
x86: fix cpu_mask_to_apicid_and to include cpu_online_mask
x86: update io_apic.c to the new cpumask code
x86: Introduce topology_core_cpumask()/topology_thread_cpumask()
x86: xen: use smp_call_function_many()
x86: use work_on_cpu in x86/kernel/cpu/mcheck/mce_amd_64.c
...
Fixed up trivial conflict in kernel/time/tick-sched.c manually
Impact: New API
The old topology_core_siblings() and topology_thread_siblings() return
a cpumask_t; these new ones return a (const) struct cpumask *.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (144 commits)
powerpc/44x: Support 16K/64K base page sizes on 44x
powerpc: Force memory size to be a multiple of PAGE_SIZE
powerpc/32: Wire up the trampoline code for kdump
powerpc/32: Add the ability for a classic ppc kernel to be loaded at 32M
powerpc/32: Allow __ioremap on RAM addresses for kdump kernel
powerpc/32: Setup OF properties for kdump
powerpc/32/kdump: Implement crash_setup_regs() using ppc_save_regs()
powerpc: Prepare xmon_save_regs for use with kdump
powerpc: Remove default kexec/crash_kernel ops assignments
powerpc: Make default kexec/crash_kernel ops implicit
powerpc: Setup OF properties for ppc32 kexec
powerpc/pseries: Fix cpu hotplug
powerpc: Fix KVM build on ppc440
powerpc/cell: add QPACE as a separate Cell platform
powerpc/cell: fix build breakage with CONFIG_SPUFS disabled
powerpc/mpc5200: fix error paths in PSC UART probe function
powerpc/mpc5200: add rts/cts handling in PSC UART driver
powerpc/mpc5200: Make PSC UART driver update serial errors counters
powerpc/mpc5200: Remove obsolete code from mpc5200 MDIO driver
powerpc/mpc5200: Add MDMA/UDMA support to MPC5200 ATA driver
...
Fix trivial conflict in drivers/char/Makefile as per Paul's directions
It is counter intuitive to have the select listed
as part of the PCI option.
Move the select to the SPARC64 specific part of the config.
PCI_MSI has a dependency on PCI so it does not harm to have
it always selected.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
SUN_IO is always 'y' so drop it and thus killing an ifdef/endif pair
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
While doing this use standard names for start/end
so we could use definitions straight from asm-generic
for all the typical symbols.
This also allowed us to drop the use of PROVIDE in the linker
script so sprc is less non-standard on this area.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use a dedicated aligned section for the init_thread_union
variable and declare this section in vmlinux.lds.
This align sparc with most other architectures. Eventually this allow
the init_task bits to be unified across all architectures.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Do the array length check and fixup before copying the array.
Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Copy module_64.c to module.c
o Add all sparc specific bits to module.c
o delete module_32.c
o update Makefile
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Introduce a helper function
o Combine sparc64 specific case values
o add ifdef's around sparc64 code snippets
Note: The ifdef around the BUG_ON is highly questionable
but for now the safe approach was taken
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
To prepare for unification use the bit neutral versions of
the Elf types defined by asm/module.h
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use some preprocessor magic in combination with the
newly introduced CONFIG_BITS to unify module.h.
A few additional symbols are added as they are needed in a follow-up patch
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
CONFIG_BITS is set to 32 for sparc32
and 64 for sparc64.
This allow us to use this symbol in for example header files
to ease unification of sparc32 and sparc64.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
When hardirq.h are removed from asm-generic/local.h a few
bits fails to build. Fix these upfront.
Reported by Alexey Dobriyan.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Like cpu_coregroup_map, but returns a (const) pointer.
Compile-tested on sparc64 (defconfig).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Impact: New APIs
The old node_to_cpumask/node_to_pcibus returned a cpumask_t: these
return a pointer to a struct cpumask. Part of removing cpumasks from
the stack.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: David S. Miller <davem@davemloft.net>
In order to always provide fully synchronized state to the debugger,
we might need to do a synchronize_user_stack().
A pair of hooks, arch_ptrace_stop_needed() and arch_ptrace_stop(),
exist to handle this kind of situation. It was created for
the sake of IA64.
Use them, to flush the kernel side cached register windows
to the user stack, when necessary.
Signed-off-by: David S. Miller <davem@davemloft.net>
Impact: cleanup
Each SMP arch defines these themselves. Move them to a central
location.
Twists:
1) Some archs (m32, parisc, s390) set possible_map to all 1, so we add a
CONFIG_INIT_ALL_POSSIBLE for this rather than break them.
2) mips and sparc32 '#define cpu_possible_map phys_cpu_present_map'.
Those archs simply have phys_cpu_present_map replaced everywhere.
3) Alpha defined cpu_possible_map to cpu_present_map; this is tricky
so I just manipulate them both in sync.
4) IA64, cris and m32r have gratuitous 'extern cpumask_t cpu_possible_map'
declarations.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Grant Grundler <grundler@parisc-linux.org>
Tested-by: Tony Luck <tony.luck@intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Mike Travis <travis@sgi.com>
Cc: ink@jurassic.park.msu.ru
Cc: rmk@arm.linux.org.uk
Cc: starvik@axis.com
Cc: tony.luck@intel.com
Cc: takata@linux-m32r.org
Cc: ralf@linux-mips.org
Cc: grundler@parisc-linux.org
Cc: paulus@samba.org
Cc: schwidefsky@de.ibm.com
Cc: lethal@linux-sh.org
Cc: wli@holomorphy.com
Cc: davem@davemloft.net
Cc: jdike@addtoit.com
Cc: mingo@redhat.com
Al asked: BTW, why does sparc64 export put_fs_struct? Grepping the
kernel tree did not show any users of an exported put_fs_struct - so
drop the export.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use sparc64 version of scatterlist.h.
There are three main differences:
dma_addr_t replaces __u32
dma_address replaces dvma_address
dma_length replaces dvma_length
dma_addr_t is a u32 on sparc32.
Boot tested on sparc32.
Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use the new asm/asm.h header to help commonize the
strlen assembler between 32-bit and 64-bit
While we're here, use proper linux/linkage.h macros
instead of by-hand stuff.
Signed-off-by: David S. Miller <davem@davemloft.net>
Simple replacement, now the _nr is redundant.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following sparse warnings:
symbol 'static_irqaction' was not declared. Should it be static?
symbol 'static_irq_count' was not declared. Should it be static?
symbol 'irq_action_lock' was not declared. Should it be static?
symbol 'unexpected_irq' was not declared. Should it be static?
symbol 'handler_irq' was not declared. Should it be static?
returning void-valued expression
returning void-valued expression
returning void-valued expression
symbol 'init_IRQ' was not declared. Should it be static?
Warnings were fixed by addding proper declarations
and fixing return path of a few functions.
There remains several warnings all related to the floppy driver.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
o add decalrations to entry.h for functions only used from assembler
o add declaratiosn to kernel.h for functions only used from .c
o removed unused functions/extern declarations
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
o drop trailing whitespaces
o align a fix things properly
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warning:
arch/sparc/kernel/pmc.c:41:6: warning: symbol 'pmc_swift_idle'
was not declared. Should it be static?
It was not used outside this file - make it static
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use sparc64 version of prom/printf.c.
The only differences for sparc32 is that prom_printf is no longer
exported for modules which should be OK.
Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
o in sparc32 variant removed prom_halt in warning situations
o ifdef out sparc32 specific code
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Use C99 initializer for struct members
o fix code style issues
o Add KERN_WARNING to all printk
o Update prints to match sparc64
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This broke sparc64 in various ways.
Add an empty dummy hook in sparc32's prom_32.c so that we
can potentially handle things on that side similarly, and
in particular avoid a prom_common.c ifdef :-)
Signed-off-by: David S. Miller <davem@davemloft.net>
o use cpu_32.c as base
o move all sparc64 definitions to the common cpu.c
o use ifdef for the parts that differs and use cpu_32 as base
o spitfire.h required a CONFIG_SPARC64 guard to fix build on 32 bit
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Prepare cputable to include sparc64 versions
Declare it __initconst so it can be dropped after init
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
o declare variables from cpu_*.c
o declare function from cpu_32.c
To do this introduce a new header "kernel.h" which is local to kernel/
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Without fancy makefile rules it's not straightforward
to prevent both arch/sparc/kernel/audit.o and lib/audit.o
from both being used on sparc32.
Since arch/sparc/kernel/audit.c is identical to lib/audit.c
except some CONFIG_COMPAT protected sections of code, just
use it on sparc32 too as that's the simplest way to fix
this.
Signed-off-by: David S. Miller <davem@davemloft.net>
If we cannot determine the CPU or FPU report
"Unknown CPU" or "Unknown FPU" like sparc64 does.
And report with KERN_ERR that we cannot determine the CPU.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fixed style issues
Use C99 struct assignments
Use KERN_DEBUG for printk
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sparc64 uses a non-recursive sibling traversal algorithm
that never got propagated into the sparc32 copy of this
code.
Sync them up.
Signed-off-by: David S. Miller <davem@davemloft.net>
Add final len assignment in sparc64's get_one_property() (it's necessary
to avoid unchecked return value warnings on the sparc32 side),
and mark name argument const on sparc32's copy.
Signed-off-by: David S. Miller <davem@davemloft.net>
Unfortunately there is some sparc32/sparc64 ifdef'ery in
here due to the difference in how the prom_firstprop()
and prom_nextprop() routines work.
This will be eliminated eventually.
Signed-off-by: David S. Miller <davem@davemloft.net>
This is where common code implementations will go as we unify
32-bit and 64-bit OF device tree code.
Signed-off-by: David S. Miller <davem@davemloft.net>
This is where common declarations will go as we unify
these files as much as possible into common code.
Signed-off-by: David S. Miller <davem@davemloft.net>
A closer inspection revealed that these two files had identical
functionality - but the implementation of it differed slightly.
Base it on the sparc version as it was the best.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
of_node_put is needed before discarding a value received from
of_find_node_by_name, eg in error handling code or when the device
node is no longer used.
The semantic match that catches the bug is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r exists@
local idexpression struct device_node *n;
position p1, p2;
struct device_node *n1;
statement S;
identifier f;
expression E;
expression *ptr != NULL;
@@
n@p1 = of_find_node_by_name(...)
...
if (!n) S
... when != of_node_put(n)
when != n1 = f(n,...)
when != E = n
when any
when strict
(
return \(0\|<+...n...+>\|ptr\);
|
return@p2 ...;
|
of_node_put(n);
|
n1 = f(n,...)
|
E = n
)
@script:python@
p1 << r.p1;
p2 << r.p2;
@@
print "* file: %s of_find_node_by_name %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>
Signed-off-by: Nicolas Palix <npalix@diku.dk>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Simple unification:
o renamed piggyback to *_32.c/*_64.c
o copied content of Makefile from sparc64 to sparc and guard it
o updated sparc/boot/.gitignore
o deleted remaining files in sparc64/boot
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Move all files from sparc64/kernel/ to sparc/kernel
- rename as appropriate
o Update sparc/Makefile to the changes
o Update sparc/kernel/Makefile to include the sparc64 files
NOTE: This commit changes link order on sparc64!
Link order had to change for either of sparc32 and sparc64.
And assuming sparc64 see more testing than sparc32 change link
order on sparc64 where issues will be caught faster.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
o sparc32 files with identical names to sparc64 renamed to <name>_32.S
o introduced a few Kconfig helpers to simplify Makefile logic
o refactored Makefile to prepare for unification
- use obj-$(CONFIG_SPARC32) for sparc32 specific files
- use <name>_$(BITS) for files where sparc64 has a _64 variant
- sparc64 directly include a few files where sparc32 builds them,
refer to these files directly (no BITS)
- sneaked in -Werror as used by sparc64
o modified sparc/Makefile to use the new names for head/init_task
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Renamed files in sparc64 to <name>_64.S when identical
to sparc32 files.
o iomap.c were equal for sparc32 and sparc64
o adjusted sparc/Makefile now we have only one lib/
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Identical named files renamed to <name>_32.S
Refactored Makefile to prepare for unification.
Linking order was altered slightly - but this is a lib.a file so
it should not matter.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
- all files with identical names copied and renamed to *_64.c
- the remaning files copied as is
- added sparc64 specific files to sparc/prom/Makefile
- teach sparc64 Makefile to look into sparc/prom/
- delete unused Makefile from sparc64/prom/
linking order was not kept for sparc64 with this change.
It was not possible to keep linking order for both sparc and sparc64
and as sparc64 see more testing than sparc it was natural to
break linking order on sparc64. Should it have any effect it
would be detected sooner this way.
printf_32.c and printf_64.c are obvious candidates to be merged
but they are not 100% equal so that was left for later
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
- rename files where sparc64 uses identical names to *_32.c
- refactor Makefile (but keep linking order)
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
To unify Makefile for sparc and sparc64 a few other steps was needed:
1) separate defconfig files for sparc and sparc64 is required,
so locate these in arch/sparc/configs
2) removoval of hack in toplevel Makefile to deal with that
headers was in a separate directory compared to the rest
The unification of the Makefile required usage of several
foo-$(CONFIG_SPARCnn) +=
due to a few directories pending unification.
This will be cleaned up when we unify the remaining directories.
Included in this patch are the deletion of a few files in
sparc64 as they are no longer needed: Makefile + Kconfig.
arch/sparc64/ will after this patch is applied only
have four directories (prom, lib, kernel, boot)
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
With this 'git status' no longer reports any new files
At least not for a sparc allnoconfig build
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Leave all cleaning to boot/Makefile
and delete zImage too when we do a 'make clean'
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The btfixup step needs knowledge of all the .o files,
but there is no need to pass them in independent variables.
Simplify it to use only two variables.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
sparc64 does not use constants generated from asm-offsets
but to prepare it to do so the parts that could be
shared do now generate constants for sparc64 too.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch makes the two vmlinux.lds.S files identical
and serve as documentation for the changes in each file.
This mainly add stuffs to sparc32 that is otherwise only
used by sparc64 and thus it should have no effect.
Build tested only.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This is complicated a little because compat_audit.c wants to see only
the 32bit syscall numbers, but is being built in a 64bit compile.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
We use clock cycle counter, adjusted to HZ.
This can be extended to sun4v based processors as well, as they
also have a proper overflow interrupt facility for the performance
counters.
Signed-off-by: David S. Miller <davem@davemloft.net>
It writes the %pic register, keeping mind of processor bugs.
Implement reset_pic() in terms of it.
Signed-off-by: David S. Miller <davem@davemloft.net>
In these instructions we load the new thread register, switch
the register window, and setup the new frame pointer.
All of these must appear atomic, and things will explode if
we take a PIL=15 NMI interrupt in the middle of this sequence.
Signed-off-by: David S. Miller <davem@davemloft.net>
We don't want the rtrap path to try and run softirqs or
anything like that when returning from a PIL==15 NMI.
Signed-off-by: David S. Miller <davem@davemloft.net>
So that we can profile code even in a local_irq_disable() section,
only write 14 (instead of 15) into the %pil register to disable IRQs.
This allows PIL level 15 to serve as a pseudo NMI.
Signed-off-by: David S. Miller <davem@davemloft.net>
Stephen Rothwell pointed out that pcmcia can't be enabled on sparc64.
There is an empty non-prompt PCMCIA explicit entry in
arch/sparc/Kconfig but that doesn't do anything.
32-bit sparc needs a small hack to make this work, since it doesn't
use the generic IRQ layer yes. We have to provide a dummy definition
of probe_irq_mask(), since this is used by the yenta socket driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a sysctl to tweak the RSS limit used to decide when to grow
the TSB for an address space.
In order to avoid expensive divides and multiplies only simply
positive and negative powers of two are supported.
The function computed takes the number of TSB translations that will
fit at one time in the TSB of a given size, and either adds or
subtracts a percentage of entries. This final value is the
RSS limit.
See tsb_size_to_rss_limit().
Signed-off-by: David S. Miller <davem@davemloft.net>
- move all sparc64/mm/ files to arch/sparc/mm/
- commonly named files are named _64.c
- add files to sparc/mm/Makefile preserving link order
- delete now unused sparc64/mm/Makefile
- sparc64 now finds mm/ in sparc
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
- rename files where sparc64 has similar files to _32.c
- Restructure Makefile
- Sneak in -Werror as we have for sparc64
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move relavent files to sparc/math-emu and
adjust path/include accordingly.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Drop unused assignment from Makefile
- Replace EXTRA_CFLAGS with ccflags-y
- Delete unused file
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Merge all of sparc64 Kconfig to sparc Kconfig.
The merge was checked by:
- visual inspection in menuconfig
- result of allnoconfig, allmodconfig, allyesconfig was checked before and after
- result of a number of randconfig was checked before and after
scripts/diffconfig was used to check if the config differed before and after
The validity of the test was checked by on purpose introducing
a few bugs - and they were all caught by first run.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
To align with sparc64 add a "Bus options" menu
This has the additiona advantage that all
bus options are kept together
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
We already has the proper definition in place in param.h.
So use the common Kconfig.hz file
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
We have it in drivers/char/Kconfig
There is no need to ask twice
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mode declaration of SPARC up in the top
to match the structure of sparc64 Kconfig
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The kernel always executes in the TSO memory model now,
so none of this stuff is necessary any more.
With helpful feedback from Nick Piggin.
Signed-off-by: David S. Miller <davem@davemloft.net>
The fact of the matter is, all UltraSPARC-III and later chips only
implement TSO. They don't implement PSO and RMO memory models at all.
Only the Ultra-I and Ultra-II family chips implement RMO and they are
only helped marginally by using this setting when executing kernel
code.
The big plus to doing this is that we can eliminate all of the non-Sync
memory barriers in the kernel except for the ones used in the optimized
memcpy/memset code (these use block load and store operations which
have their own memory ordering rules).
Signed-off-by: David S. Miller <davem@davemloft.net>
bitops_64.h includes the generic one; pretty sure 32 should too.
(Found by using __fls in generic code and breaking sparc defconfig build:
thanks Stephen and linux-next!)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
The name of the device_node field differ across the platforms, so we
have to implement inlined accessors. This is needed to avoid ugly
#ifdef in the generic code.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
All architectures now use the generic compat_sys_ptrace, as should every
new architecture that needs 32bit compat (if we'll ever get another).
Remove the now superflous __ARCH_WANT_COMPAT_SYS_PTRACE define, and also
kill a comment about __ARCH_SYS_PTRACE that was added after
__ARCH_SYS_PTRACE was already gone.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
All noise since we don't have CPU hotplug there. However, they
did expose something very odd-looking in there - poke_viking()
does a bunch of identical btfixup each time it's called (i.e.
for each CPU). That one is left alone for now; just the trivial
misannotation fixes.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This adds the sparc syscall hookups.
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Ulrich Drepper <drepper@redhat.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch fixes tty compile warnings as sugested by Alan Cox:
CC drivers/char/n_tty.o
drivers/char/n_tty.c: In function normal_poll:
drivers/char/n_tty.c:1555: warning: array subscript is above array bounds
drivers/char/n_tty.c:1564: warning: array subscript is above array bounds
drivers/char/n_tty.c: In function read_chan:
drivers/char/n_tty.c:1269: warning: array subscript is above array bounds
CC drivers/char/tty_ioctl.o
drivers/char/tty_ioctl.c: In function set_termios:
drivers/char/tty_ioctl.c:533: warning: array subscript is above array
bounds
drivers/char/tty_ioctl.c:537: warning: array subscript is above array
bounds
drivers/char/tty_ioctl.c: In function tty_mode_ioctl:
drivers/char/tty_ioctl.c:662: warning: array subscript is above array
bounds
drivers/char/tty_ioctl.c:892: warning: array subscript is above array
bounds
drivers/char/tty_ioctl.c:896: warning: array subscript is above array
bounds
drivers/char/tty_ioctl.c:577: warning: array subscript is above array
bounds
drivers/char/tty_ioctl.c:928: warning: array subscript is above array
bounds
drivers/char/tty_ioctl.c:934: warning: array subscript is above array
bounds
Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This reverts commit 8dd9453737.
This fixes a boot failure reported by Robert Reif.
The code above the section change expects to fallthrough, so
we can't make such a section change here.
GCC warns because some tests against 32-bit values never evaluate to
true due to how TASK_SIZE is defined.
I always wanted to mimick powerpc's definition of TASK_SIZE, which
is simply TASK_SIZE_OF(current) and that also fixes the warning.
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Beregalov reports oops in __bzero() called from
copy_from_user_fixup() called from iov_iter_copy_from_user_atomic(),
when running dbench on tmpfs on sparc64: its __copy_from_user_inatomic
and __copy_to_user_inatomic should be avoiding, not calling, the fixups.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc64: Add missing null terminating entry to bq4802_match[].
sparc: use the new byteorder headers
rtc-m48t59: shift zero year to 1968 on sparc (rev 2)
dbri: check dma_alloc_coherent errors
sparc64: remove byteshifting from out* helpers
Shift the first year to 1968 for Sun SPARC machines.
Move this logic from platform specific files to rtc driver
as this fixes problems with calculating a century bit.
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Tested-by: Alexander Beregalov
Signed-off-by: David S. Miller <davem@davemloft.net>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
math-emu: Fix thinko in _FP_DIV
math-emu: Fix signalling of underflow and inexact while packing result.
sparc: Add checkstack support
sparc: correct section of current_pc()
sparc: correct section of apc_no_idle
sparc64: Fix race in arch/sparc64/kernel/trampoline.S
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile: (21 commits)
OProfile: Fix buffer synchronization for IBS
oprofile: hotplug cpu fix
oprofile: fixing whitespaces in arch/x86/oprofile/*
oprofile: fixing whitespaces in arch/x86/oprofile/*
oprofile: fixing whitespaces in drivers/oprofile/*
x86/oprofile: add the logic for enabling additional IBS bits
x86/oprofile: reordering functions in nmi_int.c
x86/oprofile: removing unused function parameter in add_ibs_begin()
oprofile: more whitespace fixes
oprofile: whitespace fixes
OProfile: Rename IBS sysfs dir into "ibs_op"
OProfile: Rework string handling in setup_ibs_files()
OProfile: Rework oprofile_add_ibs_sample() function
oprofile: discover counters for op ppro too
oprofile: Implement Intel architectural perfmon support
oprofile: Don't report Nehalem as core_2
oprofile: drop const in num counters field
Revert "Oprofile Multiplexing Patch"
x86, oprofile: BUG: using smp_processor_id() in preemptible code
x86/oprofile: fix on_each_cpu build error
...
Manually fixed trivial conflicts in
drivers/oprofile/{cpu_buffer.c,event_buffer.h}
Latest mainline gives this section mismatch on sparc:
The function current_pc() references
the variable __init no_sun4u_here.
This is often because current_pc lacks a __init
annotation or the annotation of no_sun4u_here is wrong.
Since current_pc() is used only in early time, it is correct to
put it in .init section.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The latest mainline gives this section mismatch on sparc:
The function __devinit apc_probe() references
a variable __initdata apc_no_idle.
If apc_no_idle is only used by apc_probe then
annotate apc_no_idle with a matching annotation.
Since the commit 7e7e2f0356,
apc_probe() is on __devinit so we have to correct apc_no_idle
which is referenced by this function.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch implements a new freezer subsystem in the control groups
framework. It provides a way to stop and resume execution of all tasks in
a cgroup by writing in the cgroup filesystem.
The freezer subsystem in the container filesystem defines a file named
freezer.state. Writing "FROZEN" to the state file will freeze all tasks
in the cgroup. Subsequently writing "RUNNING" will unfreeze the tasks in
the cgroup. Reading will return the current state.
* Examples of usage :
# mkdir /containers/freezer
# mount -t cgroup -ofreezer freezer /containers
# mkdir /containers/0
# echo $some_pid > /containers/0/tasks
to get status of the freezer subsystem :
# cat /containers/0/freezer.state
RUNNING
to freeze all tasks in the container :
# echo FROZEN > /containers/0/freezer.state
# cat /containers/0/freezer.state
FREEZING
# cat /containers/0/freezer.state
FROZEN
to unfreeze all tasks in the container :
# echo RUNNING > /containers/0/freezer.state
# cat /containers/0/freezer.state
RUNNING
This is the basic mechanism which should do the right thing for user space
task in a simple scenario.
It's important to note that freezing can be incomplete. In that case we
return EBUSY. This means that some tasks in the cgroup are busy doing
something that prevents us from completely freezing the cgroup at this
time. After EBUSY, the cgroup will remain partially frozen -- reflected
by freezer.state reporting "FREEZING" when read. The state will remain
"FREEZING" until one of these things happens:
1) Userspace cancels the freezing operation by writing "RUNNING" to
the freezer.state file
2) Userspace retries the freezing operation by writing "FROZEN" to
the freezer.state file (writing "FREEZING" is not legal
and returns EIO)
3) The tasks that blocked the cgroup from entering the "FROZEN"
state disappear from the cgroup's set of tasks.
[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: export thaw_process]
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Signed-off-by: Matt Helsley <matthltc@us.ibm.com>
Acked-by: Serge E. Hallyn <serue@us.ibm.com>
Tested-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch series introduces a cgroup subsystem that utilizes the swsusp
freezer to freeze a group of tasks. It's immediately useful for batch job
management scripts. It should also be useful in the future for
implementing container checkpoint/restart.
The freezer subsystem in the container filesystem defines a cgroup file
named freezer.state. Reading freezer.state will return the current state
of the cgroup. Writing "FROZEN" to the state file will freeze all tasks
in the cgroup. Subsequently writing "RUNNING" will unfreeze the tasks in
the cgroup.
* Examples of usage :
# mkdir /containers/freezer
# mount -t cgroup -ofreezer freezer /containers
# mkdir /containers/0
# echo $some_pid > /containers/0/tasks
to get status of the freezer subsystem :
# cat /containers/0/freezer.state
RUNNING
to freeze all tasks in the container :
# echo FROZEN > /containers/0/freezer.state
# cat /containers/0/freezer.state
FREEZING
# cat /containers/0/freezer.state
FROZEN
to unfreeze all tasks in the container :
# echo RUNNING > /containers/0/freezer.state
# cat /containers/0/freezer.state
RUNNING
This patch:
The first step in making the refrigerator() available to all
architectures, even for those without power management.
The purpose of such a change is to be able to use the refrigerator() in a
new control group subsystem which will implement a control group freezer.
[akpm@linux-foundation.org: fix sparc]
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Signed-off-by: Matt Helsley <matthltc@us.ibm.com>
Acked-by: Pavel Machek <pavel@suse.cz>
Acked-by: Serge E. Hallyn <serue@us.ibm.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Nigel Cunningham <nigel@tuxonice.net>
Tested-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The SET_PERSONALITY macro is always called with a second argument of 0.
Remove the ibcs argument and the various tests to set the PER_SVR4
personality.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* git://git.infradead.org/users/dwmw2/random-2.6:
Fix autoloading of MacBook Pro backlight driver.
Automatic MODULE_ALIAS() for DMI match tables.
Remove asm/a.out.h files for all architectures without a.out support.
Introduce HAVE_AOUT symbol to remove hard-coded arch list for BINFMT_AOUT
Remove redundant CONFIG_ARCH_SUPPORTS_AOUT
S390: Update comments about why we don't use <asm-generic/statfs.h>
SPARC: Use <asm-generic/statfs.h>
PowerPC: Use <asm-generic/statfs.h>
PARISC: Use <asm-generic/statfs.h>
x86_64: Use <asm-generic/statfs.h>
IA64: Use <asm-generic/statfs.h>
ARM: Use <asm-generic/statfs.h>
Make <asm-generic/statfs.h> suitable for 64-bit platforms.
Define and use PCI_DEVICE_ID_MARVELL_88ALP01_CCIC for CAFÉ camera driver
[MTD] [NAND] Define and use PCI_DEVICE_ID_MARVELL_88ALP01_NAND for CAFÉ
Use PCI_DEVICE_ID_88ALP01 for CAFÉ chip, rather than PCI_DEVICE_ID_CAFE.
EFS: Don't set f_fsid in statfs().
This requires three changes:
1) Remove !SPARC restriction in Kconfig.
2) Move Sparc specific serial drivers before 8250, so that serial
console devices don't change names on us, even if 8250 finds
devices.
3) Since the Sparc specific serial drivers try to use the
same major/minor device namespace as 8250, some coordination
is necessary. Use the sunserial_*() layer routines to allocate
minor number space within TTY_MAJOR when CONFIG_SPARC.
This has no effect on other platforms.
Thanks to Josip Rodin for bringing up this issue and testing
plus debugging various revisions of this patch.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/sparc/kernel/sun4d_smp.c: In function ‘smp4d_callin’:
arch/sparc/kernel/sun4d_smp.c:101: error: implicit declaration of function ‘notify_cpu_starting’
arch/sparc/kernel/sun4m_smp.c: In function ‘smp4m_callin’:
arch/sparc/kernel/sun4m_smp.c:74: error: implicit declaration of function ‘notify_cpu_starting’
Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Here is an updated version of a patch I wrote 6 years ago
http://marc.info/?l=linux-sparc&m=103939103607617&w=2
that simplifies interrupt mask lookup. It's main purpose
is to add VME bus support but it's really a cleanup of the mask code.
Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
I have no SPARC compiler handy to verify, but it looks like this
is another file that doesn't need <linux/miscdevices.h> ...
Signed-off-by: David S. Miller <davem@davemloft.net>
Since the first argument is always NULL, the only side effect
is to disable the PROFILE_IRQ, so just do that directly.
Signed-off-by: David S. Miller <davem@davemloft.net>
This is the only use of the clear_profile_irq() btfixup entry,
which just eats up lots of dead space on other platform types.
A subsequent commit will delete the other implementations and
the btfixup entry as well.
Signed-off-by: David S. Miller <davem@davemloft.net>
As noticed by Russell King, we were not setting this properly
to the number of entries, but rather the total size.
This results in the core dumping code allocating waayyyy too
much memory.
Signed-off-by: David S. Miller <davem@davemloft.net>
As noticed by Russell King, we were not setting this properly
to the number of entries, but rather the total size.
This results in the core dumping code allocating waayyyy too
much memory.
Signed-off-by: David S. Miller <davem@davemloft.net>
1) set_brkpt() is referenced by nothing and hasn't been used by anyone
to my knowledge for many many years. So just delete it.
2) add extern decl for do_sparc64_fault() in asm/pgtable_64.h
Signed-off-by: David S. Miller <davem@davemloft.net>
As sparse warns, without this struct page pointer subtraction is
extremely expensive, and this is a pretty common operation in
fast paths.
With this define struct page becomes 64 bytes which makes for a
simple subtract and shift, instead of a costly divide or reciprocol
multiply.
Signed-off-by: David S. Miller <davem@davemloft.net>
Lots of shadowed local variables and global_reg_snapshot[] needs
an extern declaration in asm/ptrace_64.h.
Signed-off-by: David S. Miller <davem@davemloft.net>
It is just used as a parent to encapsulate two PBM objects.
But that layout is only really relevant and necessary for
psycho PCI controllers, which unlike all the others share
a single IOMMU instance between sibling PCI busses.
Signed-off-by: David S. Miller <davem@davemloft.net>
The spinlock code does not use NR_CPUS.
Compile tested using allyesconfig and allnoconfig.
Signed-off-by: Bjoern B. Brandenburg <bbb@cs.unc.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Right now, there is no notifier that is called on a new cpu, before the new
cpu begins processing interrupts/softirqs.
Various kernel function would need that notification, e.g. kvm works around
by calling smp_call_function_single(), rcu polls cpu_online_map.
The patch adds a CPU_STARTING notification. It also adds a helper function
that sends the message to all cpu_chain handlers.
Tested on x86-64.
All other archs are untested. Especially on sparc, I'm not sure if I got
it right.
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This patch adds init memory poisoning. It looks like
totalram_pages was not updated properly in free_initrd_mem
so I fixed that as well.
Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use rtc subsystem for sparc32 architecture.
Actually, only one driver is needed: m48t59
as it supports the most common clocks on sparc32
machines: m48t08 and m48t02.
[ Add proper RTC layer calls to set_rtc_mmss() -DaveM ]
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
The device nodes that sit above 'esp' and 'le' on SBUS lack a 'ranges'
property, but we should pass the translation up to the parent node so
that the SBUS level ranges get applied.
Based upon a bug report from Robert Reif.
Signed-off-by: David S. Miller <davem@davemloft.net>
Three main things:
1) Make prober an arch initcall instead of using hard-coded invocation
from paging_init()
2) Shrink table size, the fpu ident stuff was never used.
3) Use named struct initialized in table.
Signed-off-by: David S. Miller <davem@davemloft.net>
While doing some easy cleanups on the sparc code I noticed that the
CONFIG_SUN4 code seems to be worse than the rest - there were some
"I don't know how it should work, but the current code definitely cannot
work." places.
And while I have seen people running Linux on machines like a
SPARCstation 5 a few years ago I don't recall having seen sun4
machines, even less ones running Linux.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This driver is now limited to just doing the basic clock board and FHC
chip initialization and registering the platform devices for the
per-board LEDs, which are driven by the new LEDS_STARFIRE driver.
The IRQ register handling is already confined purely to the device
tree code.
Signed-off-by: David S. Miller <davem@davemloft.net>
This fixes the build with PCI disabled, we do want the
generic DMA facilities and interfaces even when just SBUS
is enabled.
Based upon a build failure report by Robert Reif.
Signed-off-by: David S. Miller <davem@davemloft.net>
These have no dependencies on the EBUS probing layer, the clients
setup the registers and all of those details. The EBUS DMA layer
just programs and manages the DMA controller found in EBUS.
Signed-off-by: David S. Miller <davem@davemloft.net>
In order to make this week I also had to add an include
of linux/dma-mapping.h to asm/pci_32.h because drivers/pci/pci.c
really depends upon getting this header somehow.
Signed-off-by: David S. Miller <davem@davemloft.net>
The individual SBUS IOMMU arch code now sets the IOMMU information
directly into the OF device objects.
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a helper function that, given a bus of_device node, propagates
all iommu, stc, and host_controller values down to the child nodes.
Signed-off-by: David S. Miller <davem@davemloft.net>
32-bit sparc just needed it to register the ioport procfs bits, do this
via an arch_initcall() instead.
Signed-off-by: David S. Miller <davem@davemloft.net>
No drivers or code uses this stuff any more, every driver has been
converted over to OF device probing.
Signed-off-by: David S. Miller <davem@davemloft.net>
Ingo Molnar