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| author | Ingo Molnar <mingo@kernel.org> | 2012-06-20 14:22:32 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-06-20 14:22:34 +0200 |
| commit | 6a991acceedce3ca93caef8ba7af2468c9451614 (patch) | |
| tree | 1997d71fc57bdebd12fc70a73070281614b52f15 /arch/powerpc/kernel/time.c | |
| parent | 70fb74a5420f9caa3e001d65004e4b669124283e (diff) | |
| parent | 485802a6c524e62b5924849dd727ddbb1497cc71 (diff) | |
| download | linux-6a991acceedce3ca93caef8ba7af2468c9451614.tar.gz linux-6a991acceedce3ca93caef8ba7af2468c9451614.tar.bz2 linux-6a991acceedce3ca93caef8ba7af2468c9451614.zip | |
Merge commit 'v3.5-rc3' into x86/debug
Merge it in to pick up a fix that we are going to clean up in this
branch.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/powerpc/kernel/time.c')
| -rw-r--r-- | arch/powerpc/kernel/time.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 99a995c2a3f2..be171ee73bf8 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -475,6 +475,7 @@ void timer_interrupt(struct pt_regs * regs) struct pt_regs *old_regs; u64 *next_tb = &__get_cpu_var(decrementers_next_tb); struct clock_event_device *evt = &__get_cpu_var(decrementers); + u64 now; /* Ensure a positive value is written to the decrementer, or else * some CPUs will continue to take decrementer exceptions. @@ -509,9 +510,16 @@ void timer_interrupt(struct pt_regs * regs) irq_work_run(); } - *next_tb = ~(u64)0; - if (evt->event_handler) - evt->event_handler(evt); + now = get_tb_or_rtc(); + if (now >= *next_tb) { + *next_tb = ~(u64)0; + if (evt->event_handler) + evt->event_handler(evt); + } else { + now = *next_tb - now; + if (now <= DECREMENTER_MAX) + set_dec((int)now); + } #ifdef CONFIG_PPC64 /* collect purr register values often, for accurate calculations */ |