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perf tools: Fix generation of pmu list

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The internal pmu list was never used. With each perf_pmu__find() call
the pmu structure was created new by parsing sysfs. Beside this it
caused memory leaks. We now keep all pmus by adding them to the list.

Also, pmu_lookup() should return pmus that do not expose the format
specifier in sysfs.

We need a valid internal pmu list in a later patch to iterate over all
pmus that exist in the system.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
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/1339706321-8802-3-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Robert Richter 2012-06-14 22:38:37 +02:00 committed by Arnaldo Carvalho de Melo
parent 287e74aa3d
commit 9bc8f9fe2c
1 changed files with 2 additions and 1 deletions
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3
tools/perf/util/pmu.c
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@ -72,7 +72,7 @@ static int pmu_format(char *name, struct list_head *format)
"%s/bus/event_source/devices/%s/format", sysfs, name);
if (stat(path, &st) < 0)
return -1;
return 0; /* no error if format does not exist */
if (pmu_format_parse(path, format))
return -1;
@ -252,6 +252,7 @@ static struct perf_pmu *pmu_lookup(char *name)
list_splice(&aliases, &pmu->aliases);
pmu->name = strdup(name);
pmu->type = type;
list_add_tail(&pmu->list, &pmus);
return pmu;
}