diff options
| author | Varun Wadekar <vwadekar@nvidia.com> | 2012-01-16 15:32:21 +0530 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2012-01-16 15:32:21 +0530 |
| commit | 7919e929aa227048738e14df6bcbad3ee4458443 (patch) | |
| tree | 0c38267369fa636d7435bf22af39e3783a24ef62 /arch/powerpc/kernel | |
| parent | fcbd75c6b179b717b074d0cb7490e42ae728fb2d (diff) | |
| parent | 93dad393c796013cb6371be63d7af600c5e36c2c (diff) | |
Merge branch 'linux-3.1.y' into android-tegra-nv-3.1
Linux 3.1.9
Conflicts:
Makefile
Change-Id: I22227ab33ba7ddaba8e6fe049393c58a83d73648
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/irq.c | 15 | ||||
| -rw-r--r-- | arch/powerpc/kernel/time.c | 9 |
2 files changed, 15 insertions, 9 deletions
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index d281fb6f12f3..4b1e82a5823d 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -164,16 +164,13 @@ notrace void arch_local_irq_restore(unsigned long en) */ local_paca->hard_enabled = en; -#ifndef CONFIG_BOOKE - /* On server, re-trigger the decrementer if it went negative since - * some processors only trigger on edge transitions of the sign bit. - * - * BookE has a level sensitive decrementer (latches in TSR) so we - * don't need that + /* + * Trigger the decrementer if we have a pending event. Some processors + * only trigger on edge transitions of the sign bit. We might also + * have disabled interrupts long enough that the decrementer wrapped + * to positive. */ - if ((int)mfspr(SPRN_DEC) < 0) - mtspr(SPRN_DEC, 1); -#endif /* CONFIG_BOOKE */ + decrementer_check_overflow(); /* * Force the delivery of pending soft-disabled interrupts on PS3. diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 03b29a6759ab..2de304af07ab 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -889,6 +889,15 @@ static void __init clocksource_init(void) clock->name, clock->mult, clock->shift); } +void decrementer_check_overflow(void) +{ + u64 now = get_tb_or_rtc(); + struct decrementer_clock *decrementer = &__get_cpu_var(decrementers); + + if (now >= decrementer->next_tb) + set_dec(1); +} + static int decrementer_set_next_event(unsigned long evt, struct clock_event_device *dev) { |