[RFC 0/2] apic: tracing IPI events
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From: Jiri Olsa on 5 Aug 2010 07:20 hi, I'm adding tracing of IPIs to the APIC code by hooking following apic callbacks: void (*send_IPI_mask)(const struct cpumask *mask, int vector); void (*send_IPI_mask_allbutself)(const struct cpumask *mask, int vector); void (*send_IPI_allbutself)(int vector); void (*send_IPI_all)(int vector); void (*send_IPI_self)(int vector); attached patches: - 1/2 apic: adding apic_send_IPI_* methods for apic's IPI callbacks - 2/2 apic,trace: IPI sent trace event. I'm not sure this is the best way, maybe some more general approach might be better. please let me know what you think wbr, jirka --- arch/x86/include/asm/apic.h | 16 +++++++++- arch/x86/include/asm/apic_trace.h | 53 +++++++++++++++++++++++++++++++ arch/x86/include/asm/ipi.h | 4 +- arch/x86/kernel/apic/apic.c | 48 +++++++++++++++++++++++++++- arch/x86/kernel/apic/apic_flat_64.c | 4 +- arch/x86/kernel/apic/hw_nmi.c | 2 +- arch/x86/kernel/apic/io_apic.c | 9 +++-- arch/x86/kernel/apic/nmi.c | 2 +- arch/x86/kernel/apic/probe_64.c | 2 +- arch/x86/kernel/cpu/mcheck/mce-inject.c | 2 +- arch/x86/kernel/cpu/mcheck/mce.c | 2 +- arch/x86/kernel/cpu/perf_event.c | 2 +- arch/x86/kernel/kgdb.c | 2 +- arch/x86/kernel/reboot.c | 2 +- arch/x86/kernel/smp.c | 12 +++--- arch/x86/mm/tlb.c | 2 +- 16 files changed, 139 insertions(+), 25 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |