diff options
| author |   Wang Nan <wangnan0@huawei.com> | 2016-04-13 08:21:05 +0000 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-04-14 08:57:54 -0300 |
| commit | 040f9915e99e604688c2880e0b1e5b59dbfefa54 (patch) | |
| tree | 6858dd65055154cea586357070020614c75333e7 /tools/perf/util/data.h | |
| parent | perf session: Make ordered_events reusable (diff) | |
| download | linux-dev-040f9915e99e604688c2880e0b1e5b59dbfefa54.tar.xz linux-dev-040f9915e99e604688c2880e0b1e5b59dbfefa54.zip | |
perf data: Add perf_data_file__switch() helper
perf_data_file__switch() closes current output file, renames it, then
open a new one to continue recording. It will be used by 'perf record'
to split output into multiple perf.data files.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1460535673-159866-3-git-send-email-wangnan0@huawei.com
Signed-off-by: He Kuang <hekuang@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/data.h')
| -rw-r--r-- | tools/perf/util/data.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h index 2b15d0c95c7f..ae510ce16cb1 100644 --- a/tools/perf/util/data.h +++ b/tools/perf/util/data.h @@ -46,5 +46,14 @@ int perf_data_file__open(struct perf_data_file *file); void perf_data_file__close(struct perf_data_file *file); ssize_t perf_data_file__write(struct perf_data_file *file, void *buf, size_t size); - +/* + * If at_exit is set, only rename current perf.data to + * perf.data.<postfix>, continue write on original file. + * Set at_exit when flushing the last output. + * + * Return value is fd of new output. + */ +int perf_data_file__switch(struct perf_data_file *file, + const char *postfix, + size_t pos, bool at_exit); #endif /* __PERF_DATA_H */ |