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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-09 14:30:57 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-09 14:30:57 +0400 |
| commit | afa3536be88b435a057cb727b48fd3d760a497d2 (patch) | |
| tree | 8562d3c8327286746ae835ef8eb39d4494a1054d /arch/x86 | |
| parent | 35a9ad8af0bb0fa3525e6d0d20e32551d226f38e (diff) | |
| parent | 9b01f5bf3999a3db5b1bbd9fdfd80d8d304e94ee (diff) | |
| download | linux-afa3536be88b435a057cb727b48fd3d760a497d2.tar.xz | |
Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Ingo Molnar:
"Main changes:
- Fix the deadlock reported by Dave Jones et al
- Clean up and fix nohz_full interaction with arch abilities
- nohz init code consolidation/cleanup"
* 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
nohz: nohz full depends on irq work self IPI support
nohz: Consolidate nohz full init code
arm64: Tell irq work about self IPI support
arm: Tell irq work about self IPI support
x86: Tell irq work about self IPI support
irq_work: Force raised irq work to run on irq work interrupt
irq_work: Introduce arch_irq_work_has_interrupt()
nohz: Move nohz full init call to tick init
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/irq_work.h | 11 | ||||
| -rw-r--r-- | arch/x86/kernel/irq_work.c | 2 |
2 files changed, 12 insertions, 1 deletions
diff --git a/arch/x86/include/asm/irq_work.h b/arch/x86/include/asm/irq_work.h new file mode 100644 index 000000000000..78162f8e248b --- /dev/null +++ b/arch/x86/include/asm/irq_work.h @@ -0,0 +1,11 @@ +#ifndef _ASM_IRQ_WORK_H +#define _ASM_IRQ_WORK_H + +#include <asm/processor.h> + +static inline bool arch_irq_work_has_interrupt(void) +{ + return cpu_has_apic; +} + +#endif /* _ASM_IRQ_WORK_H */ diff --git a/arch/x86/kernel/irq_work.c b/arch/x86/kernel/irq_work.c index 1de84e3ab4e0..15d741ddfeeb 100644 --- a/arch/x86/kernel/irq_work.c +++ b/arch/x86/kernel/irq_work.c @@ -41,7 +41,7 @@ __visible void smp_trace_irq_work_interrupt(struct pt_regs *regs) void arch_irq_work_raise(void) { #ifdef CONFIG_X86_LOCAL_APIC - if (!cpu_has_apic) + if (!arch_irq_work_has_interrupt()) return; apic->send_IPI_self(IRQ_WORK_VECTOR); |