perf tools: Move timestamp creation to util (37b20151) · Commits · 戴 / test

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>

tools/perf/builtin-buildid-cache.c

+1 −13

Original line number	Diff line number	Diff line
		@@ -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)

tools/perf/util/util.c

+17 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}

tools/perf/util/util.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -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 */

Admin message