[RFC 0/2] apic: tracing IPI events

From: Jiri Olsa
Date: Thu Aug 05 2010 - 07:09:58 EST


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(-)
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