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time: Kill off CONFIG_GENERIC_TIME 

Now that all arches have been converted over to use generic time via
clocksources or arch_gettimeoffset(), we can remove the GENERIC_TIME
config option and simplify the generic code.

Signed-off-by: John Stultz <johnstul@us.ibm.com>
LKML-Reference: <1279068988-21864-4-git-send-email-johnstul@us.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
John Stultz 2010-07-13 17:56:20 -07:00 committed by Thomas Gleixner
parent ce3bf7ab22
commit 592913ecb8
33 changed files with 19 additions and 159 deletions
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3
Documentation/kernel-parameters.txt
View File

@ -73,7 +73,6 @@ parameter is applicable:
MTD MTD (Memory Technology Device) support is enabled.
NET Appropriate network support is enabled.
NUMA NUMA support is enabled.
GENERIC_TIME The generic timeofday code is enabled.
NFS Appropriate NFS support is enabled.
OSS OSS sound support is enabled.
PV_OPS A paravirtualized kernel is enabled.
@ -468,7 +467,7 @@ and is between 256 and 4096 characters. It is defined in the file
clocksource is not available, it defaults to PIT.
Format: { pit | tsc | cyclone | pmtmr }
clocksource= [GENERIC_TIME] Override the default clocksource
clocksource= Override the default clocksource
Format: <string>
Override the default clocksource and use the clocksource
with the name specified.

4
arch/alpha/Kconfig
View File

@ -47,10 +47,6 @@ config GENERIC_CALIBRATE_DELAY
bool
default y
config GENERIC_TIME
bool
default y
config GENERIC_CMOS_UPDATE
def_bool y

4
arch/arm/Kconfig
View File

@ -41,10 +41,6 @@ config SYS_SUPPORTS_APM_EMULATION
config GENERIC_GPIO
bool
config GENERIC_TIME
bool
default y
config ARCH_USES_GETTIMEOFFSET
bool
default n

3
arch/avr32/Kconfig
View File

@ -45,9 +45,6 @@ config GENERIC_IRQ_PROBE
config RWSEM_GENERIC_SPINLOCK
def_bool y
config GENERIC_TIME
def_bool y
config GENERIC_CLOCKEVENTS
def_bool y

3
arch/blackfin/Kconfig
View File

@ -614,9 +614,6 @@ comment "Kernel Timer/Scheduler"
source kernel/Kconfig.hz
config GENERIC_TIME
def_bool y
config GENERIC_CLOCKEVENTS
bool "Generic clock events"
default y

3
arch/cris/Kconfig
View File

@ -20,9 +20,6 @@ config RWSEM_GENERIC_SPINLOCK
config RWSEM_XCHGADD_ALGORITHM
bool
config GENERIC_TIME
def_bool y
config GENERIC_CMOS_UPDATE
def_bool y

4
arch/frv/Kconfig
View File

@ -40,10 +40,6 @@ config GENERIC_HARDIRQS_NO__DO_IRQ
bool
default y
config GENERIC_TIME
bool
default y
config TIME_LOW_RES
bool
default y

4
arch/h8300/Kconfig
View File

@ -62,10 +62,6 @@ config GENERIC_CALIBRATE_DELAY
bool
default y
config GENERIC_TIME
bool
default y
config GENERIC_BUG
bool
depends on BUG

4
arch/ia64/Kconfig
View File

@ -82,10 +82,6 @@ config GENERIC_CALIBRATE_DELAY
bool
default y
config GENERIC_TIME
bool
default y
config GENERIC_TIME_VSYSCALL
bool
default y

3
arch/m32r/Kconfig
View File

@ -44,9 +44,6 @@ config HZ
int
default 100
config GENERIC_TIME
def_bool y
config ARCH_USES_GETTIMEOFFSET
def_bool y

3
arch/m68k/Kconfig
View File

@ -59,9 +59,6 @@ config HZ
int
default 100
config GENERIC_TIME
def_bool y
config ARCH_USES_GETTIMEOFFSET
def_bool y

4
arch/m68knommu/Kconfig
View File

@ -63,10 +63,6 @@ config GENERIC_CALIBRATE_DELAY
bool
default y
config GENERIC_TIME
bool
default y
config GENERIC_CMOS_UPDATE
bool
default y

3
arch/microblaze/Kconfig
View File

@ -48,9 +48,6 @@ config GENERIC_IRQ_PROBE
config GENERIC_CALIBRATE_DELAY
def_bool y
config GENERIC_TIME
def_bool y
config GENERIC_TIME_VSYSCALL
def_bool n

4
arch/mips/Kconfig
View File

@ -733,10 +733,6 @@ config GENERIC_CLOCKEVENTS
bool
default y
config GENERIC_TIME
bool
default y
config GENERIC_CMOS_UPDATE
bool
default y

3
arch/mn10300/Kconfig
View File

@ -46,9 +46,6 @@ config GENERIC_FIND_NEXT_BIT
config GENERIC_HWEIGHT
def_bool y
config GENERIC_TIME
def_bool y
config GENERIC_BUG
def_bool y

4
arch/parisc/Kconfig
View File

@ -66,10 +66,6 @@ config GENERIC_CALIBRATE_DELAY
bool
default y
config GENERIC_TIME
bool
default y
config TIME_LOW_RES
bool
depends on SMP

3
arch/powerpc/Kconfig
View File

@ -29,9 +29,6 @@ config MMU
config GENERIC_CMOS_UPDATE
def_bool y
config GENERIC_TIME
def_bool y
config GENERIC_TIME_VSYSCALL
def_bool y

3
arch/s390/Kconfig
View File

@ -40,9 +40,6 @@ config ARCH_HAS_ILOG2_U64
config GENERIC_HWEIGHT
def_bool y
config GENERIC_TIME
def_bool y
config GENERIC_TIME_VSYSCALL
def_bool y

3
arch/score/Kconfig
View File

@ -55,9 +55,6 @@ config GENERIC_CALIBRATE_DELAY
config GENERIC_CLOCKEVENTS
def_bool y
config GENERIC_TIME
def_bool y
config SCHED_NO_NO_OMIT_FRAME_POINTER
def_bool y

3
arch/sh/Kconfig
View File

@ -98,9 +98,6 @@ config GENERIC_CALIBRATE_DELAY
config GENERIC_IOMAP
bool
config GENERIC_TIME
def_bool y
config GENERIC_CLOCKEVENTS
def_bool y

3
arch/sparc/Kconfig
View File

@ -66,9 +66,6 @@ config BITS
default 32 if SPARC32
default 64 if SPARC64
config GENERIC_TIME
def_bool y
config ARCH_USES_GETTIMEOFFSET
bool
default y if SPARC32

4
arch/um/Kconfig.common
View File

@ -55,10 +55,6 @@ config GENERIC_BUG
default y
depends on BUG
config GENERIC_TIME
bool
default y
config GENERIC_CLOCKEVENTS
bool
default y

5
arch/x86/Kconfig
View File

@ -72,9 +72,6 @@ config ARCH_DEFCONFIG
default "arch/x86/configs/i386_defconfig" if X86_32
default "arch/x86/configs/x86_64_defconfig" if X86_64
config GENERIC_TIME
def_bool y
config GENERIC_CMOS_UPDATE
def_bool y
@ -2046,7 +2043,7 @@ config SCx200
config SCx200HR_TIMER
tristate "NatSemi SCx200 27MHz High-Resolution Timer Support"
depends on SCx200 && GENERIC_TIME
depends on SCx200
default y
---help---
This driver provides a clocksource built upon the on-chip

3
arch/xtensa/Kconfig
View File

@ -48,9 +48,6 @@ config HZ
int
default 100
config GENERIC_TIME
def_bool y
source "init/Kconfig"
source "kernel/Kconfig.freezer"

4
drivers/Makefile
View File

@ -101,7 +101,9 @@ obj-y += firmware/
obj-$(CONFIG_CRYPTO) += crypto/
obj-$(CONFIG_SUPERH) += sh/
obj-$(CONFIG_ARCH_SHMOBILE) += sh/
obj-$(CONFIG_GENERIC_TIME) += clocksource/
ifndef CONFIG_ARCH_USES_GETTIMEOFFSET
obj-y += clocksource/
endif
obj-$(CONFIG_DMA_ENGINE) += dma/
obj-$(CONFIG_DCA) += dca/
obj-$(CONFIG_HID) += hid/

2
drivers/acpi/acpi_pad.c
View File

@ -77,7 +77,7 @@ static void power_saving_mwait_init(void)
power_saving_mwait_eax = (highest_cstate << MWAIT_SUBSTATE_SIZE) |
(highest_subcstate - 1);
#if defined(CONFIG_GENERIC_TIME) && defined(CONFIG_X86)
#if defined(CONFIG_X86)
switch (boot_cpu_data.x86_vendor) {
case X86_VENDOR_AMD:
case X86_VENDOR_INTEL:

2
drivers/acpi/processor_idle.c
View File

@ -264,7 +264,7 @@ int acpi_processor_resume(struct acpi_device * device)
return 0;
}
#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86)
#if defined(CONFIG_X86)
static void tsc_check_state(int state)
{
switch (boot_cpu_data.x86_vendor) {

4
drivers/misc/Kconfig
View File

@ -72,7 +72,7 @@ config ATMEL_TCLIB
config ATMEL_TCB_CLKSRC
bool "TC Block Clocksource"
depends on ATMEL_TCLIB && GENERIC_TIME
depends on ATMEL_TCLIB
default y
help
Select this to get a high precision clocksource based on a
@ -240,7 +240,7 @@ config CS5535_MFGPT_DEFAULT_IRQ
config CS5535_CLOCK_EVENT_SRC
tristate "CS5535/CS5536 high-res timer (MFGPT) events"
depends on GENERIC_TIME && GENERIC_CLOCKEVENTS && CS5535_MFGPT
depends on GENERIC_CLOCKEVENTS && CS5535_MFGPT
help
This driver provides a clock event source based on the MFGPT
timer(s) in the CS5535 and CS5536 companion chips.

16
kernel/time.c
View File

@ -300,22 +300,6 @@ struct timespec timespec_trunc(struct timespec t, unsigned gran)
}
EXPORT_SYMBOL(timespec_trunc);
#ifndef CONFIG_GENERIC_TIME
/*
* Simulate gettimeofday using do_gettimeofday which only allows a timeval
* and therefore only yields usec accuracy
*/
void getnstimeofday(struct timespec *tv)
{
struct timeval x;
do_gettimeofday(&x);
tv->tv_sec = x.tv_sec;
tv->tv_nsec = x.tv_usec * NSEC_PER_USEC;
}
EXPORT_SYMBOL_GPL(getnstimeofday);
#endif
/* Converts Gregorian date to seconds since 1970-01-01 00:00:00.
* Assumes input in normal date format, i.e. 1980-12-31 23:59:59
* => year=1980, mon=12, day=31, hour=23, min=59, sec=59.

4
kernel/time/Kconfig
View File

@ -6,7 +6,7 @@ config TICK_ONESHOT
config NO_HZ
bool "Tickless System (Dynamic Ticks)"
depends on GENERIC_TIME && GENERIC_CLOCKEVENTS
depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS
select TICK_ONESHOT
help
This option enables a tickless system: timer interrupts will
@ -15,7 +15,7 @@ config NO_HZ
config HIGH_RES_TIMERS
bool "High Resolution Timer Support"
depends on GENERIC_TIME && GENERIC_CLOCKEVENTS
depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS
select TICK_ONESHOT
help
This option enables high resolution timer support. If your

4
kernel/time/clocksource.c
View File

@ -531,7 +531,7 @@ static u64 clocksource_max_deferment(struct clocksource *cs)
return max_nsecs - (max_nsecs >> 5);
}
#ifdef CONFIG_GENERIC_TIME
#ifndef CONFIG_ARCH_USES_GETTIMEOFFSET
/**
* clocksource_select - Select the best clocksource available
@ -577,7 +577,7 @@ static void clocksource_select(void)
}
}
#else /* CONFIG_GENERIC_TIME */
#else /* !CONFIG_ARCH_USES_GETTIMEOFFSET */
static inline void clocksource_select(void) { }

55
kernel/time/timekeeping.c
View File

@ -173,8 +173,6 @@ void timekeeping_leap_insert(int leapsecond)
update_vsyscall(&xtime, timekeeper.clock, timekeeper.mult);
}
#ifdef CONFIG_GENERIC_TIME
/**
* timekeeping_forward_now - update clock to the current time
*
@ -376,52 +374,6 @@ void timekeeping_notify(struct clocksource *clock)
tick_clock_notify();
}
#else /* GENERIC_TIME */
static inline void timekeeping_forward_now(void) { }
/**
* ktime_get - get the monotonic time in ktime_t format
*
* returns the time in ktime_t format
*/
ktime_t ktime_get(void)
{
struct timespec now;
ktime_get_ts(&now);
return timespec_to_ktime(now);
}
EXPORT_SYMBOL_GPL(ktime_get);
/**
* ktime_get_ts - get the monotonic clock in timespec format
* @ts: pointer to timespec variable
*
* The function calculates the monotonic clock from the realtime
* clock and the wall_to_monotonic offset and stores the result
* in normalized timespec format in the variable pointed to by @ts.
*/
void ktime_get_ts(struct timespec *ts)
{
struct timespec tomono;
unsigned long seq;
do {
seq = read_seqbegin(&xtime_lock);
getnstimeofday(ts);
tomono = wall_to_monotonic;
} while (read_seqretry(&xtime_lock, seq));
set_normalized_timespec(ts, ts->tv_sec + tomono.tv_sec,
ts->tv_nsec + tomono.tv_nsec);
}
EXPORT_SYMBOL_GPL(ktime_get_ts);
#endif /* !GENERIC_TIME */
/**
* ktime_get_real - get the real (wall-) time in ktime_t format
*
@ -784,10 +736,11 @@ void update_wall_time(void)
return;
clock = timekeeper.clock;
#ifdef CONFIG_GENERIC_TIME
offset = (clock->read(clock) - clock->cycle_last) & clock->mask;
#else
#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET
offset = timekeeper.cycle_interval;
#else
offset = (clock->read(clock) - clock->cycle_last) & clock->mask;
#endif
timekeeper.xtime_nsec = (s64)xtime.tv_nsec << timekeeper.shift;

4
kernel/trace/Kconfig
View File

@ -153,7 +153,7 @@ config IRQSOFF_TRACER
bool "Interrupts-off Latency Tracer"
default n
depends on TRACE_IRQFLAGS_SUPPORT
depends on GENERIC_TIME
depends on !ARCH_USES_GETTIMEOFFSET
select TRACE_IRQFLAGS
select GENERIC_TRACER
select TRACER_MAX_TRACE
@ -175,7 +175,7 @@ config IRQSOFF_TRACER
config PREEMPT_TRACER
bool "Preemption-off Latency Tracer"
default n
depends on GENERIC_TIME
depends on !ARCH_USES_GETTIMEOFFSET
depends on PREEMPT
select GENERIC_TRACER
select TRACER_MAX_TRACE