[PATCH 28/53] perf tools: Move timestamp creation to util
From: Wang Nan <hidden>
Date: 2016-01-11 13:55:29
Also in:
lkml
Subsystem:
performance events subsystem, the rest · Maintainers:
Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds
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 <redacted> Signed-off-by: He Kuang <redacted> Cc: Arnaldo Carvalho de Melo <redacted> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <redacted> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Zefan Li <redacted> Cc: pi3orama@163.com --- tools/perf/builtin-buildid-cache.c | 14 +------------- tools/perf/util/util.c | 17 +++++++++++++++++ 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 d93bff7..632efc6 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 88b8f8d..5b8259b 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c@@ -690,3 +690,20 @@ out: return tip; } + +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 fe915e6..ef97038 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h@@ -343,5 +343,6 @@ int fetch_kernel_version(unsigned int *puint, #define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x) const char *perf_tip(const char *dirpath); +int fetch_current_timestamp(char *buf, size_t sz); #endif /* GIT_COMPAT_UTIL_H */
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1.8.3.4