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(parent: 671dec5) | patch
perf_counter: x86: self-IPI for pending work
authorPeter Zijlstra <a.p.zijlstra@chello.nl>
Mon, 6 Apr 2009 09:45:03 +0000 (11:45 +0200)
committerIngo Molnar <mingo@elte.hu>
Tue, 7 Apr 2009 08:48:56 +0000 (10:48 +0200)
commitb6276f353bf490add62dcf7db0ebd75baa3e1a37
tree9720a848fca77555bef9658c56445815f6f2a29dtree | snapshot (tar.gz zip)
parent671dec5daf3b3c43c5777be282f00120a44cf37fcommit | 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>
arch/x86/include/asm/entry_arch.h diff | blob | blame | history
arch/x86/include/asm/hardirq.h diff | blob | blame | history
arch/x86/include/asm/hw_irq.h diff | blob | blame | history
arch/x86/include/asm/irq_vectors.h diff | blob | blame | history
arch/x86/include/asm/perf_counter.h diff | blob | blame | history
arch/x86/kernel/cpu/perf_counter.c diff | blob | blame | history
arch/x86/kernel/entry_64.S diff | blob | blame | history
arch/x86/kernel/irq.c diff | blob | blame | history
arch/x86/kernel/irqinit_32.c diff | blob | blame | history
arch/x86/kernel/irqinit_64.c diff | blob | blame | history