From: tip-bot for Wang Nan <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: ast@kernel.org, will.deacon@arm.com, tglx@linutronix.de,
daniel@iogearbox.net, hpa@zytor.com, hekuang@huawei.com,
mingo@kernel.org, namhyung@kernel.org,
masami.hiramatsu.pt@hitachi.com, jolsa@kernel.org,
peterz@infradead.org, brendan.d.gregg@gmail.com,
wangnan0@huawei.com, acme@redhat.com,
linux-kernel@vger.kernel.org, lizefan@huawei.com
Subject: [tip:perf/core] perf tools: Move timestamp creation to util
Date: Wed, 3 Feb 2016 02:18:53 -0800 [thread overview]
Message-ID: <tip-37b20151efe002a4a43532d3791d11d39d080248@git.kernel.org> (raw)
In-Reply-To: <1453715801-7732-27-git-send-email-wangnan0@huawei.com>
Commit-ID: 37b20151efe002a4a43532d3791d11d39d080248
Gitweb: http://git.kernel.org/tip/37b20151efe002a4a43532d3791d11d39d080248
Author: Wang Nan <wangnan0@huawei.com>
AuthorDate: Mon, 25 Jan 2016 09:56:13 +0000
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Fri, 29 Jan 2016 17:30:06 -0300
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>
---
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 7a2da7e..b9e2843 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 61650f0..a861581 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 */
next prev parent reply other threads:[~2016-02-03 10:20 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-25 9:55 [GIT PULL 00/54] perf tools: Bugfix, BPF improvements and overwrite ring buffer support Wang Nan
2016-01-25 9:55 ` [PATCH 01/54] perf test: Add libbpf relocation checker Wang Nan
2016-01-26 14:58 ` Arnaldo Carvalho de Melo
2016-01-26 15:07 ` Arnaldo Carvalho de Melo
2016-02-03 10:13 ` [tip:perf/core] " tip-bot for Wang Nan
2016-01-25 9:55 ` [PATCH 02/54] perf bpf: Check relocation target section Wang Nan
2016-02-03 10:14 ` [tip:perf/core] " tip-bot for Wang Nan
2016-01-25 9:55 ` [PATCH 03/54] tools build: Allow subprojects select all feature checkers Wang Nan
2016-02-03 10:14 ` [tip:perf/core] " tip-bot for Wang Nan
2016-01-25 9:55 ` [PATCH 04/54] perf build: Select all feature checkers for feature-dump Wang Nan
2016-02-03 10:14 ` [tip:perf/core] " tip-bot for Wang Nan
2016-01-25 9:55 ` [PATCH 05/54] perf build: Use feature dump file for build-test Wang Nan
2016-01-26 16:59 ` Arnaldo Carvalho de Melo
2016-01-27 2:36 ` Wangnan (F)
2016-01-27 13:54 ` Arnaldo Carvalho de Melo
2016-01-27 11:22 ` [PATCH] tools build: Check basic headers for test-compile feature checker Wang Nan
2016-01-27 13:23 ` Jiri Olsa
2016-01-27 13:55 ` Arnaldo Carvalho de Melo
2016-02-03 10:15 ` [tip:perf/core] " tip-bot for Wang Nan
2016-01-25 9:55 ` [PATCH 06/54] perf test: Check environment before start real BPF test Wang Nan
2016-02-03 10:18 ` [tip:perf/core] " tip-bot for Wang Nan
2016-01-25 9:55 ` [PATCH 07/54] perf tools: Fix symbols searching for offline module in buildid-cache Wang Nan
2016-01-25 9:55 ` [PATCH 08/54] perf test: Improve bp_signal Wang Nan
2016-02-03 10:18 ` [tip:perf/core] " tip-bot for Wang Nan
2016-01-25 9:55 ` [PATCH 09/54] perf tools: Add API to config maps in bpf object Wang Nan
2016-02-03 23:29 ` Arnaldo Carvalho de Melo
2016-02-04 12:59 ` Wangnan (F)
2016-01-25 9:55 ` [PATCH 10/54] perf tools: Enable BPF object configure syntax Wang Nan
2016-01-25 9:55 ` [PATCH 11/54] perf record: Apply config to BPF objects before recording Wang Nan
2016-01-25 9:55 ` [PATCH 12/54] perf tools: Enable passing event to BPF object Wang Nan
2016-01-25 9:56 ` [PATCH 13/54] perf tools: Support perf event alias name Wang Nan
2016-02-03 23:35 ` Arnaldo Carvalho de Melo
2016-01-25 9:56 ` [PATCH 14/54] perf tools: Support setting different slots in a BPF map separately Wang Nan
2016-01-25 9:56 ` [PATCH 15/54] perf tools: Enable indices setting syntax for BPF maps Wang Nan
2016-01-25 9:56 ` [PATCH 16/54] perf tools: Introduce bpf-output event Wang Nan
2016-01-25 9:56 ` [PATCH 17/54] perf data: Support converting data from bpf_perf_event_output() Wang Nan
2016-01-25 9:56 ` [PATCH 18/54] perf core: Introduce new ioctl options to pause and resume ring buffer Wang Nan
2016-01-25 9:56 ` [PATCH 19/54] perf core: Set event's default overflow_handler Wang Nan
2016-01-25 9:56 ` [PATCH 20/54] perf core: Prepare writing into ring buffer from end Wang Nan
2016-01-25 9:56 ` [PATCH 21/54] perf core: Add backward attribute to perf event Wang Nan
2016-01-25 9:56 ` [PATCH 22/54] perf core: Reduce perf event output overhead by new overflow handler Wang Nan
2016-01-25 9:56 ` [PATCH 23/54] perf tools: Introduce API to pause ring buffer Wang Nan
2016-01-25 9:56 ` [PATCH 24/54] perf tools: Only validate is_pos for tracking evsels Wang Nan
2016-01-25 9:56 ` [PATCH 25/54] perf tools: Print write_backward value in perf_event_attr__fprintf Wang Nan
2016-01-25 9:56 ` [PATCH 26/54] perf tools: Move timestamp creation to util Wang Nan
2016-02-03 10:18 ` tip-bot for Wang Nan [this message]
2016-01-25 9:56 ` [PATCH 27/54] perf tools: Make ordered_events reusable Wang Nan
2016-01-25 9:56 ` [PATCH 28/54] perf record: Extract synthesize code to record__synthesize() Wang Nan
2016-01-29 20:37 ` Arnaldo Carvalho de Melo
2016-01-25 9:56 ` [PATCH 29/54] perf tools: Add perf_data_file__switch() helper Wang Nan
2016-01-25 9:56 ` [PATCH 30/54] perf record: Turns auxtrace_snapshot_enable into 3 states Wang Nan
2016-01-25 9:56 ` [PATCH 31/54] perf record: Introduce record__finish_output() to finish a perf.data Wang Nan
2016-01-25 9:56 ` [PATCH 32/54] perf record: Use OPT_BOOLEAN_SET for buildid cache related options Wang Nan
2016-02-03 10:19 ` [tip:perf/core] " tip-bot for Wang Nan
2016-01-25 9:56 ` [PATCH 33/54] perf record: Add '--timestamp-filename' option to append timestamp to output filename Wang Nan
2016-01-25 9:56 ` [PATCH 34/54] perf record: Split output into multiple files via '--switch-output' Wang Nan
2016-01-25 9:56 ` [PATCH 35/54] perf record: Force enable --timestamp-filename when --switch-output is provided Wang Nan
2016-01-25 9:56 ` [PATCH 36/54] perf record: Disable buildid cache options by default in switch output mode Wang Nan
2016-01-25 9:56 ` [PATCH 37/54] perf record: Re-synthesize tracking events after output switching Wang Nan
2016-01-25 9:56 ` [PATCH 38/54] perf record: Generate tracking events for process forked by perf Wang Nan
2016-01-25 9:56 ` [PATCH 39/54] perf record: Ensure return non-zero rc when mmap fail Wang Nan
2016-01-25 9:56 ` [PATCH 40/54] perf record: Prevent reading invalid data in record__mmap_read Wang Nan
2016-01-25 9:56 ` [PATCH 41/54] perf tools: Add evlist channel helpers Wang Nan
2016-01-25 9:56 ` [PATCH 42/54] perf tools: Automatically add new channel according to evlist Wang Nan
2016-01-25 9:56 ` [PATCH 43/54] perf tools: Operate multiple channels Wang Nan
2016-01-25 9:56 ` [PATCH 44/54] perf tools: Squash overwrite setting into channel Wang Nan
2016-01-25 9:56 ` [PATCH 45/54] perf record: Don't read from and poll overwrite channel Wang Nan
2016-01-25 9:56 ` [PATCH 46/54] perf record: Don't poll on " Wang Nan
2016-01-25 9:56 ` [PATCH 47/54] perf tools: Detect avalibility of write_backward Wang Nan
2016-01-25 9:56 ` [PATCH 48/54] perf tools: Enable overwrite settings Wang Nan
2016-01-25 9:56 ` [PATCH 49/54] perf tools: Set write_backward attribut bit for overwrite events Wang Nan
2016-01-25 9:56 ` [PATCH 50/54] perf record: Toggle overwrite ring buffer for reading Wang Nan
2016-01-26 8:25 ` Wangnan (F)
2016-01-25 9:56 ` [PATCH 51/54] perf record: Rename variable to make code clear Wang Nan
2016-01-25 9:56 ` [PATCH 52/54] perf record: Read from backward ring buffer Wang Nan
2016-01-25 9:56 ` [PATCH 53/54] perf record: Allow generate tracking events at the end of output Wang Nan
2016-01-25 9:56 ` [PATCH 54/54] perf tools: Don't warn about out of order event if write_backward is used Wang Nan
2016-01-26 9:11 ` [offlist] Re: [GIT PULL 00/54] perf tools: Bugfix, BPF improvements and overwrite ring buffer support Wangnan (F)
2016-01-26 14:11 ` Arnaldo Carvalho de Melo
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