From bd3bfe9eda94d3c050830217c1e1c338808de5b2 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 11 Jan 2011 12:42:00 -0200 Subject: [PATCH] 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 Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Renninger Cc: Tom Zanussi LKML-Reference: Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 1 + tools/perf/builtin-stat.c | 1 + tools/perf/builtin-top.c | 1 + tools/perf/perf.c | 2 -- 4 files changed, 3 insertions(+), 2 deletions(-) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 7069bd3e90b3..aa7ece397656 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 c385a63ebfd1..0ff11d9b13be 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 6ce4042421bd..4b995ee099cf 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 5b1ecd66bb36..595d0f4a7103 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; -- 2.20.1