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    Subject[PATCH 0/2] Add tracepoints to trace all x86 system IRQs
    Date
    This is a patch series aiming to trace all the x86 system IRQs. The
    tracepoints make it easier to understand IRQ interaction with other
    system events and how do the IRQs affect the system behavior.

    Patch#0 adds irq_handler_{entry,exit} tracepoints to x86 timer interrupt
    handler.
    Patch#1 creates a irq_vectors/ event sub system and
    irq_vectors_{entry,exit} trace events. It adds tracepoints to all x86
    IRQ vector handlers.

    Currently the patch only adds tracepoints to x86. A similar approach can
    be taken with other architectures to trace IRQ vectors in the system.

    Previous iterations of this patch set:
    https://lkml.org/lkml/2011/4/22/321
    https://lkml.org/lkml/2011/7/14/309


    Vaibhav Nagarnaik (2):
    trace,x86: Add tracepoint to x86 timer interrupt handler
    trace,x86: Add x86 irq vector entry/exit tracepoints

    arch/x86/include/asm/irq_vectors.h | 50 ++++++++++++++++++++++++++
    arch/x86/kernel/apic/apic.c | 7 ++++
    arch/x86/kernel/cpu/mcheck/therm_throt.c | 3 ++
    arch/x86/kernel/cpu/mcheck/threshold.c | 3 ++
    arch/x86/kernel/irq.c | 6 +++-
    arch/x86/kernel/irq_work.c | 3 ++
    arch/x86/kernel/smp.c | 7 ++++
    arch/x86/kernel/time.c | 15 +++++---
    arch/x86/kernel/traps.c | 3 ++
    arch/x86/mm/tlb.c | 3 ++
    include/trace/events/irq_vectors.h | 56 ++++++++++++++++++++++++++++++
    11 files changed, 149 insertions(+), 7 deletions(-)
    create mode 100644 include/trace/events/irq_vectors.h

    --
    1.7.3.1



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