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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-20 07:05:45 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-20 07:05:45 +0400 |
| commit | 266d7ad7f4fe2f44b91561f5b812115c1b3018ab (patch) | |
| tree | 45acf12d5cb170205ccffe24b9f24672ff8bff2e /arch | |
| parent | bcbd818c069b9e1bf82517401225b152a33968e2 (diff) | |
| parent | 36dfbbf136db0d645bacfd42ce7d9d6928ea532d (diff) | |
| download | linux-266d7ad7f4fe2f44b91561f5b812115c1b3018ab.tar.xz | |
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer changes from Ingo Molnar:
"Main changes:
- ntp: Add CONFIG_RTC_SYSTOHC: a generic RTC driver facility
complementing the existing CONFIG_RTC_HCTOSYS, which uses NTP to
keep the hardware clock updated.
- posix-timers: Fix clock_adjtime to always return timex data on
success. This is changing the ABI, but no breakage was expected
and found - caution is warranted nevertheless.
- platform persistent clock improvements/cleanups.
- clockevents: refactor timer broadcast handling to be more generic
and less duplicated with matching architecture code (mostly ARM
motivated.)
- various fixes and cleanups"
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timers/x86/hpet: Use HPET_COUNTER to specify the hpet counter in vread_hpet()
posix-cpu-timers: Fix nanosleep task_struct leak
clockevents: Fix generic broadcast for FEAT_C3STOP
time, Fix setting of hardware clock in NTP code
hrtimer: Prevent hrtimer_enqueue_reprogram race
clockevents: Add generic timer broadcast function
clockevents: Add generic timer broadcast receiver
timekeeping: Switch HAS_PERSISTENT_CLOCK to ALWAYS_USE_PERSISTENT_CLOCK
x86/time/rtc: Don't print extended CMOS year when reading RTC
x86: Select HAS_PERSISTENT_CLOCK on x86
timekeeping: Add CONFIG_HAS_PERSISTENT_CLOCK option
rtc: Skip the suspend/resume handling if persistent clock exist
timekeeping: Add persistent_clock_exist flag
posix-timers: Fix clock_adjtime to always return timex data on success
Round the calculated scale factor in set_cyc2ns_scale()
NTP: Add a CONFIG_RTC_SYSTOHC configuration
MAINTAINERS: Update John Stultz's email
time: create __getnstimeofday for WARNless calls
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/time.c | 2 | ||||
| -rw-r--r-- | arch/x86/Kconfig | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/rtc.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/tsc.c | 3 | ||||
| -rw-r--r-- | arch/x86/vdso/vclock_gettime.c | 2 |
5 files changed, 5 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 89b0f58194d1..f77fa22754bc 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -669,7 +669,7 @@ int update_persistent_clock(struct timespec now) struct rtc_time tm; if (!ppc_md.set_rtc_time) - return 0; + return -ENODEV; to_tm(now.tv_sec + 1 + timezone_offset, &tm); tm.tm_year -= 1900; diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index a2570490eab6..f8130a770653 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -107,6 +107,7 @@ config X86 select GENERIC_CLOCKEVENTS_BROADCAST if X86_64 || (X86_32 && X86_LOCAL_APIC) select GENERIC_TIME_VSYSCALL if X86_64 select KTIME_SCALAR if X86_32 + select ALWAYS_USE_PERSISTENT_CLOCK select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER select HAVE_CONTEXT_TRACKING if X86_64 diff --git a/arch/x86/kernel/rtc.c b/arch/x86/kernel/rtc.c index 801602b5d745..2e8f3d3b5641 100644 --- a/arch/x86/kernel/rtc.c +++ b/arch/x86/kernel/rtc.c @@ -149,7 +149,6 @@ unsigned long mach_get_cmos_time(void) if (century) { century = bcd2bin(century); year += century * 100; - printk(KERN_INFO "Extended CMOS year: %d\n", century * 100); } else year += CMOS_YEARS_OFFS; diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 06ccb5073a3f..4b9ea101fe3b 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -623,7 +623,8 @@ static void set_cyc2ns_scale(unsigned long cpu_khz, int cpu) ns_now = __cycles_2_ns(tsc_now); if (cpu_khz) { - *scale = (NSEC_PER_MSEC << CYC2NS_SCALE_FACTOR)/cpu_khz; + *scale = ((NSEC_PER_MSEC << CYC2NS_SCALE_FACTOR) + + cpu_khz / 2) / cpu_khz; *offset = ns_now - mult_frac(tsc_now, *scale, (1UL << CYC2NS_SCALE_FACTOR)); } diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c index 205ad328aa52..c74436e687bf 100644 --- a/arch/x86/vdso/vclock_gettime.c +++ b/arch/x86/vdso/vclock_gettime.c @@ -60,7 +60,7 @@ notrace static cycle_t vread_tsc(void) static notrace cycle_t vread_hpet(void) { - return readl((const void __iomem *)fix_to_virt(VSYSCALL_HPET) + 0xf0); + return readl((const void __iomem *)fix_to_virt(VSYSCALL_HPET) + HPET_COUNTER); } #ifdef CONFIG_PARAVIRT_CLOCK |