diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-04-18 17:12:14 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-04-18 17:12:14 +0100 |
| commit | fac56c2df51bc29b07b3c2dcfabf32a015a0522c (patch) | |
| tree | 1ff5d84ecf4ea0bcbd42e2ef9624b5ade3810890 /arch/powerpc/kernel/time.c | |
| parent | 6caa15d0b84d2ea688fd31f4f172c8353463e109 (diff) | |
| parent | a6360dd37e1a144ed11e6548371bade559a1e4df (diff) | |
Merge commit 'v2.6.39-rc3' into for-2.6.39
Diffstat (limited to 'arch/powerpc/kernel/time.c')
| -rw-r--r-- | arch/powerpc/kernel/time.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 09d31dbf43f9..375480c56eb9 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -356,7 +356,7 @@ void account_system_vtime(struct task_struct *tsk) } get_paca()->user_time_scaled += user_scaled; - if (in_irq() || idle_task(smp_processor_id()) != tsk) { + if (in_interrupt() || idle_task(smp_processor_id()) != tsk) { account_system_time(tsk, 0, delta, sys_scaled); if (stolen) account_steal_time(stolen); @@ -577,14 +577,21 @@ void timer_interrupt(struct pt_regs * regs) struct clock_event_device *evt = &decrementer->event; u64 now; + /* Ensure a positive value is written to the decrementer, or else + * some CPUs will continue to take decrementer exceptions. + */ + set_dec(DECREMENTER_MAX); + + /* Some implementations of hotplug will get timer interrupts while + * offline, just ignore these + */ + if (!cpu_online(smp_processor_id())) + return; + trace_timer_interrupt_entry(regs); __get_cpu_var(irq_stat).timer_irqs++; - /* Ensure a positive value is written to the decrementer, or else - * some CPUs will continuue to take decrementer exceptions */ - set_dec(DECREMENTER_MAX); - #if defined(CONFIG_PPC32) && defined(CONFIG_PMAC) if (atomic_read(&ppc_n_lost_interrupts) != 0) do_IRQ(regs); |