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authorYunlong Song <yunlong.song@huawei.com>2015-04-02 21:47:17 +0800
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-04-02 13:18:50 -0300
commit44f7e432e3dc8a13f5661e8b722f53645df083d1 (patch)
tree0162bb74cef5cc40ae3721208dd6467ac56952eb
parent06af0f2c919d7c8f05efebe0d96a6f22297aafd4 (diff)
perf timechart: Support using -f to override perf.data file ownership
Enable perf timechart to use perf.data when it is not owned by current user or root. Example: # perf timechart record ls # chown Yunlong.Song:Yunlong.Song perf.data # ls -al perf.data -rw------- 1 Yunlong.Song Yunlong.Song 5471744 Apr 2 15:15 perf.data # id uid=0(root) gid=0(root) groups=0(root),64(pkcs11) Before this patch: # perf timechart File perf.data not owned by current user or root (use -f to override) # perf timechart -f Error: unknown switch `f' usage: perf timechart [<options>] {record} -i, --input <file> input file name -o, --output <file> output file name -w, --width <n> page width --highlight <duration or task name> highlight tasks. Pass duration in ns or process name. -P, --power-only output power data only -T, --tasks-only output processes data only -p, --process <process> process selector. Pass a pid or process name. --symfs <directory> Look for files with symbols relative to this directory -n, --proc-num <n> min. number of tasks to print -t, --topology sort CPUs according to topology --io-skip-eagain skip EAGAIN errors --io-min-time <time> all IO faster than min-time will visually appear longer --io-merge-dist <time> merge events that are merge-dist us apart As shown above, the -f option does not work at all. After this patch: # perf timechart File perf.data not owned by current user or root (use -f to override) # perf timechart -f Written 0.0 seconds of trace to output.svg. # cat output.svg <?xml version="1.0" standalone="no"?> <!DOCTYPE svg SYSTEM "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> <svg width="1000" height="10110" version="1.1" xmlns="http://www.w3.org/2000/svg"> <defs> <style type="text/css"> <![CDATA[ rect { stroke-width: 1; } ... ... As shown above, the -f option really works now. Signed-off-by: Yunlong Song <yunlong.song@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1427982439-27388-9-git-send-email-yunlong.song@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/perf/builtin-timechart.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index 494b3bbe5ea4..e50fe1187b0b 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -67,6 +67,7 @@ struct timechart {
skip_eagain;
u64 min_time,
merge_dist;
+ bool force;
};
struct per_pidcomm;
@@ -1598,6 +1599,7 @@ static int __cmd_timechart(struct timechart *tchart, const char *output_name)
struct perf_data_file file = {
.path = input_name,
.mode = PERF_DATA_MODE_READ,
+ .force = tchart->force,
};
struct perf_session *session = perf_session__new(&file, false,
@@ -1956,6 +1958,7 @@ int cmd_timechart(int argc, const char **argv,
OPT_CALLBACK(0, "io-merge-dist", &tchart.merge_dist, "time",
"merge events that are merge-dist us apart",
parse_time),
+ OPT_BOOLEAN('f', "force", &tchart.force, "don't complain, do it"),
OPT_END()
};
const char * const timechart_subcommands[] = { "record", NULL };