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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-04-06 11:45:03 +0200
committerIngo Molnar <mingo@elte.hu>2009-04-07 10:48:56 +0200
commitb6276f353bf490add62dcf7db0ebd75baa3e1a37 (patch)
tree9720a848fca77555bef9658c56445815f6f2a29d /arch/x86/include/asm/hw_irq.h
parent671dec5daf3b3c43c5777be282f00120a44cf37f (diff)
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/include/asm/hw_irq.h')
-rw-r--r--arch/x86/include/asm/hw_irq.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index ae80f64973e..7309c0ad690 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -30,6 +30,7 @@ extern void apic_timer_interrupt(void);
extern void generic_interrupt(void);
extern void error_interrupt(void);
extern void perf_counter_interrupt(void);
+extern void perf_pending_interrupt(void);
extern void spurious_interrupt(void);
extern void thermal_interrupt(void);