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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-04-06 11:45:03 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-07 10:48:56 +0200 |
| commit | b6276f353bf490add62dcf7db0ebd75baa3e1a37 (patch) | |
| tree | 9720a848fca77555bef9658c56445815f6f2a29d /arch/x86/kernel/irqinit_32.c | |
| parent | 671dec5daf3b3c43c5777be282f00120a44cf37f (diff) | |
| download | kernel-crypto-b6276f353bf490add62dcf7db0ebd75baa3e1a37.tar.gz kernel-crypto-b6276f353bf490add62dcf7db0ebd75baa3e1a37.tar.xz kernel-crypto-b6276f353bf490add62dcf7db0ebd75baa3e1a37.zip | |
perf_counter: x86: self-IPI for pending work
Implement set_perf_counter_pending() with a self-IPI so that it will
run ASAP in a usable context.
For now use a second IRQ vector, because the primary vector pokes
the apic in funny ways that seem to confuse things.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
LKML-Reference: <20090406094517.724626696@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/irqinit_32.c')
| -rw-r--r-- | arch/x86/kernel/irqinit_32.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/irqinit_32.c b/arch/x86/kernel/irqinit_32.c index 925d87cfc55..3190a6b961e 100644 --- a/arch/x86/kernel/irqinit_32.c +++ b/arch/x86/kernel/irqinit_32.c @@ -166,6 +166,7 @@ static void __init apic_intr_init(void) alloc_intr_gate(ERROR_APIC_VECTOR, error_interrupt); # ifdef CONFIG_PERF_COUNTERS alloc_intr_gate(LOCAL_PERF_VECTOR, perf_counter_interrupt); + alloc_intr_gate(LOCAL_PENDING_VECTOR, perf_pending_interrupt); # endif # ifdef CONFIG_X86_MCE_P4THERMAL |