lkml.org 
[lkml]   [2013]   [Oct]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH v3 1/4] perf: add active_entry list head to struct perf_event
    On Wed, Oct 23, 2013 at 02:58:02PM +0200, Stephane Eranian wrote:
    > This patch adds a new fields to the struct perf_event.
    > It is intended to be used to chain events which are
    > active (enabled). It helps in the hardware layer
    > for PMU which do not have actual counter restrictions, i.e.,
    > free running read-only counters. Active events are chained
    > as opposed to being tracked via the counter they use.
    >
    > Signed-off-by: Stephane Eranian <eranian@google.com>
    > ---
    > include/linux/perf_event.h | 1 +
    > kernel/events/core.c | 1 +
    > 2 files changed, 2 insertions(+)
    >
    > diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
    > index 2e069d1..a376384 100644
    > --- a/include/linux/perf_event.h
    > +++ b/include/linux/perf_event.h
    > @@ -435,6 +435,7 @@ struct perf_event {
    > struct perf_cgroup *cgrp; /* cgroup event is attach to */
    > int cgrp_defer_enabled;
    > #endif
    > + struct list_head active_entry;

    Could this be in union with 'hlist_entry' ? It looks
    as 'same purpose' and 'mutualy exclusive stuff.

    jirka


    \
     
     \ /
      Last update: 2013-10-25 17:21    [W:4.187 / U:0.196 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site