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perf hists: Link hist entry pairs to leader

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Current hists__match/link() link a leader to its pair, so if multiple
pairs were linked, the leader will lose pointer to previous pairs since
it was overwritten.  Fix it by making leader the list head.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1354171126-14387-8-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2012-11-29 15:38:34 +09:00 committed by Arnaldo Carvalho de Melo
parent 2850d94872
commit 5fa9041bba
1 changed files with 2 additions and 2 deletions
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4
tools/perf/util/hist.c
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@ -785,7 +785,7 @@ void hists__match(struct hists *leader, struct hists *other)
pair = hists__find_entry(other, pos);
if (pair)
hist_entry__add_pair(pos, pair);
hist_entry__add_pair(pair, pos);
}
}
@ -806,7 +806,7 @@ int hists__link(struct hists *leader, struct hists *other)
pair = hists__add_dummy_entry(leader, pos);
if (pair == NULL)
return -1;
hist_entry__add_pair(pair, pos);
hist_entry__add_pair(pos, pair);
}
}