diff options
| author | Wang Nan <wangnan0@huawei.com> | 2016-01-25 09:56:13 +0000 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-01-29 17:30:06 -0300 |
| commit | 37b20151efe002a4a43532d3791d11d39d080248 (patch) | |
| tree | 90e553c10b5eaadf2f47d64303f6b6b6fa27bc5a /tools | |
| parent | 8fd34e1cce180eb0c726e7ed88f7b70c11c38e21 (diff) | |
| download | linux-37b20151efe002a4a43532d3791d11d39d080248.tar.bz2 | |
perf tools: Move timestamp creation to util
Timestamp generation becomes a public available helper. Which will
be used by 'perf record', help it output to split output file based
on time.
For example:
perf.data.2015122620363710
perf.data.2015122620364092
perf.data.2015122620365423
...
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1453715801-7732-27-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')
| -rw-r--r-- | tools/perf/builtin-buildid-cache.c | 14 | ||||
| -rw-r--r-- | tools/perf/util/util.c | 17 | ||||
| -rw-r--r-- | tools/perf/util/util.h | 1 |
3 files changed, 19 insertions, 13 deletions
diff --git a/tools/perf/builtin-buildid-cache.c b/tools/perf/builtin-buildid-cache.c index d93bff7fc0e4..632efc6b79a0 100644 --- a/tools/perf/builtin-buildid-cache.c +++ b/tools/perf/builtin-buildid-cache.c @@ -38,19 +38,7 @@ static int build_id_cache__kcore_buildid(const char *proc_dir, char *sbuildid) static int build_id_cache__kcore_dir(char *dir, size_t sz) { - struct timeval tv; - struct tm tm; - char dt[32]; - - if (gettimeofday(&tv, NULL) || !localtime_r(&tv.tv_sec, &tm)) - return -1; - - if (!strftime(dt, sizeof(dt), "%Y%m%d%H%M%S", &tm)) - return -1; - - scnprintf(dir, sz, "%s%02u", dt, (unsigned)tv.tv_usec / 10000); - - return 0; + return fetch_current_timestamp(dir, sz); } static bool same_kallsyms_reloc(const char *from_dir, char *to_dir) diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index 7a2da7ef556e..b9e2843cfbe7 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -701,3 +701,20 @@ bool is_regular_file(const char *file) return S_ISREG(st.st_mode); } + +int fetch_current_timestamp(char *buf, size_t sz) +{ + struct timeval tv; + struct tm tm; + char dt[32]; + + if (gettimeofday(&tv, NULL) || !localtime_r(&tv.tv_sec, &tm)) + return -1; + + if (!strftime(dt, sizeof(dt), "%Y%m%d%H%M%S", &tm)) + return -1; + + scnprintf(buf, sz, "%s%02u", dt, (unsigned)tv.tv_usec / 10000); + + return 0; +} diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 61650f05e5c1..a8615816a00d 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -344,5 +344,6 @@ int fetch_kernel_version(unsigned int *puint, const char *perf_tip(const char *dirpath); bool is_regular_file(const char *file); +int fetch_current_timestamp(char *buf, size_t sz); #endif /* GIT_COMPAT_UTIL_H */ |