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authorArnaldo Carvalho de Melo <acme@redhat.com>2011-01-11 12:42:00 -0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-01-11 12:51:03 -0200
commitbd3bfe9eda94d3c050830217c1e1c338808de5b2 (patch)
treed2be87a7e681192994c2434592dac685f5178cc9 /tools
parent3d03e2ea74103a50c23d6ab1906cf73399c0dafb (diff)
downloadlinux-2.6.38-lt-ux500-bd3bfe9eda94d3c050830217c1e1c338808de5b2.tar.gz
perf evsel: Fix order of event list deletion
We need to defer calling perf_evsel_list__delete() till after atexit registered routines, because we need to traverse the events being recorded at that time at least on 'perf record'. This fixes the problem reported by Thomas Renninger where cmd_record called by cmd_timechart would not write the tracing data to the perf.data file header because the evsel_list at atexit (control+C on 'perf timechart record') time would be empty, being already deleted by run_builtin(), and thus 'perf timechart' when trying to process such perf.data file would die with: "no trace data in the file" Problem introduced in 70d544d. Reported-by: Thomas Renninger <trenn@suse.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Renninger <trenn@suse.de> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/builtin-record.c1
-rw-r--r--tools/perf/builtin-stat.c1
-rw-r--r--tools/perf/builtin-top.c1
-rw-r--r--tools/perf/perf.c2
4 files changed, 3 insertions, 2 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 7069bd3e90b..aa7ece39765 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -480,6 +480,7 @@ static void atexit_header(void)
process_buildids();
perf_header__write(&session->header, output, true);
perf_session__delete(session);
+ perf_evsel_list__delete();
symbol__exit();
}
}
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index c385a63ebfd..0ff11d9b13b 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -743,6 +743,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)
out_free_fd:
list_for_each_entry(pos, &evsel_list, node)
perf_evsel__free_stat_priv(pos);
+ perf_evsel_list__delete();
out:
thread_map__delete(threads);
threads = NULL;
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 6ce4042421b..4b995ee099c 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1490,6 +1490,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
out_free_fd:
list_for_each_entry(pos, &evsel_list, node)
perf_evsel__free_mmap(pos);
+ perf_evsel_list__delete();
return status;
}
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index 5b1ecd66bb3..595d0f4a710 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -286,8 +286,6 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
status = p->fn(argc, argv, prefix);
exit_browser(status);
- perf_evsel_list__delete();
-
if (status)
return status & 0xff;