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| author | He Kuang <hekuang@huawei.com> | 2015-05-28 16:17:30 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-06-08 16:30:32 +0300 |
| commit | 457ae94ae047330e75c13f28ead6de31eab245ed (patch) | |
| tree | ec525a71f8f7b573bb8c0b6dd5779844e7c4976d | |
| parent | 38e096249b4fca1a26ca8908ea2018a5faf366e2 (diff) | |
| download | linux-457ae94ae047330e75c13f28ead6de31eab245ed.tar.xz | |
perf record: Fix perf.data size in no-buildid mode
The size of perf.data is missing update in no-buildid mode, which gives
wrong output result.
Before this patch:
$ perf.perf record -B -e syscalls:sys_enter_open uname
Linux
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.000 MB perf.data ]
After this patch:
$ perf.perf record -B -e syscalls:sys_enter_open uname
Linux
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.001 MB perf.data ]
Signed-off-by: He Kuang <hekuang@huawei.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1432819050-30511-1-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/builtin-record.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 91aa2a3dcf19..d3731cce7c1c 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -345,12 +345,9 @@ static int process_buildids(struct record *rec) struct perf_data_file *file = &rec->file; struct perf_session *session = rec->session; - u64 size = lseek(perf_data_file__fd(file), 0, SEEK_CUR); - if (size == 0) + if (file->size == 0) return 0; - file->size = size; - /* * During this process, it'll load kernel map and replace the * dso->long_name to a real pathname it found. In this case @@ -719,6 +716,7 @@ out_child: if (!err && !file->is_pipe) { rec->session->header.data_size += rec->bytes_written; + file->size = lseek(perf_data_file__fd(file), 0, SEEK_CUR); if (!rec->no_buildid) { process_buildids(rec); |