lkml.org 
[lkml]   [2013]   [Jan]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] perf tools: fix set event list leader
On Thu, Jan 31, 2013 at 01:54:37PM +0100, Stephane Eranian wrote:
>
> The __perf_evlist__set_leader() was setting the leader for all events
> in the list except the first. Which means it assumed the first event
> already had event->leader = event. Seems like this should be the role
> of the function to also do this. This is a requirement for an upcoming
> patch set.

agreed,

Acked/Tested-by Jiri Olsa <jolsa@redhat.com>


>
> Signed-off-by: Stephane Eranian <eranian@google.com>
> ---
>
> diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
> index dc8aee9..050d5bc 100644
> --- a/tools/perf/util/evlist.c
> +++ b/tools/perf/util/evlist.c
> @@ -119,8 +119,7 @@ void __perf_evlist__set_leader(struct list_head *list)
> leader = list_entry(list->next, struct perf_evsel, node);
>
> list_for_each_entry(evsel, list, node) {
> - if (evsel != leader)
> - evsel->leader = leader;
> + evsel->leader = leader;
> }

that's leftover from the times when leader has 'leader' set to NULL

we made the change here:

perf evsel: Set leader evsel's ->leader to itself
commit 2cfda562da7b0b1e0575507ef3efe782d4e218e4
Author: Namhyung Kim <namhyung.kim@lge.com>
Date: Thu Nov 29 15:38:29 2012 +0900

the leader is set properly in perf_evsel__init and when
reading perf.data, so there was no harm in current code

thanks,
jirka


\
 
 \ /
  Last update: 2013-01-31 14:44    [W:0.075 / U:0.500 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site