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    SubjectRe: [PATCH 3/4] perf: Support for irq exclusion
    On Fri, May 21, 2010 at 04:05:14PM +0200, Frederic Weisbecker wrote:
    > Provide exclude_softirq and exclude_hardirq support in perf
    > event attributes. This brings the final pieces to subscribe
    > to any desired context granularity of profiling or tracing.
    >
    > Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
    > Cc: Ingo Molnar <mingo@elte.hu>
    > Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    > Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
    > Cc: Paul Mackerras <paulus@samba.org>
    > ---
    > include/linux/perf_event.h | 8 +++++---
    > kernel/perf_event.c | 42 +++++++++++++++++++++++++++++++-----------
    > 2 files changed, 36 insertions(+), 14 deletions(-)
    >
    > diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
    > index d939fc7..ca55ec5 100644
    > --- a/include/linux/perf_event.h
    > +++ b/include/linux/perf_event.h
    > @@ -213,10 +213,12 @@ struct perf_event_attr {
    > *
    > * See also PERF_RECORD_MISC_EXACT_IP
    > */
    > - precise_ip : 2, /* skid constraint */
    > - exclude_task : 1, /* don't count task context */
    > + precise_ip : 2, /* skid constraint */
    > + exclude_task : 1, /* don't count task context */
    > + exclude_softirq : 1, /* don't count softirq */
    > + exclude_hardirq : 1, /* don't count hardirq */
    >
    > - __reserved_1 : 46;
    > + __reserved_1 : 45;


    Should be 44.



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