From: Yunlong Song <yunlong.song@huawei.com>
To: <a.p.zijlstra@chello.nl>, <paulus@samba.org>, <mingo@redhat.com>,
<acme@kernel.org>
Cc: <linux-kernel@vger.kernel.org>, <wangnan0@huawei.com>
Subject: [PATCH 05/10] perf tools: Support using -f to override perf.data file ownership for lock
Date: Thu, 2 Apr 2015 21:47:14 +0800 [thread overview]
Message-ID: <1427982439-27388-6-git-send-email-yunlong.song@huawei.com> (raw)
In-Reply-To: <1427982439-27388-1-git-send-email-yunlong.song@huawei.com>
Enable perf lock to use perf.data when it is not owned by current user
or root.
Example:
# perf lock record ls
# chown Yunlong.Song:Yunlong.Song perf.data
# ls -al perf.data
-rw------- 1 Yunlong.Song Yunlong.Song 4880686 Apr 2 14:14 perf.data
# id
uid=0(root) gid=0(root) groups=0(root),64(pkcs11)
Before this patch:
# perf lock report
File perf.data not owned by current user or root (use -f to override)
Initializing perf session failed
# perf lock report -f
Error: unknown switch `f'
usage: perf lock report [<options>]
-k, --key <acquired> key for sorting (acquired / contended /
avg_wait / wait_total / wait_max / wait_min)
As shown above, the -f option does not work at all.
After this patch:
# perf lock report
File perf.data not owned by current user or root (use -f to override)
Initializing perf session failed
# perf lock report -f
Name acquired contended avg wait (ns) total wait (ns) ...
&ldata->output_l... 128 0 0 0 ...
&ctx->lock 114 0 0 0 ...
&p->pi_lock 112 0 0 0 ...
&(&pool->lock)->... 112 0 0 0 ...
&(&dentry->d_loc... 70 0 0 0 ...
&(&newf->file_lo... 62 0 0 0 ...
&(&fs->lock)->rl... 43 0 0 0 ...
...
As shown above, the -f option really works now.
Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
---
tools/perf/builtin-lock.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
index 7893a9b..d49c2ab 100644
--- a/tools/perf/builtin-lock.c
+++ b/tools/perf/builtin-lock.c
@@ -846,6 +846,8 @@ static const struct perf_evsel_str_handler lock_tracepoints[] = {
{ "lock:lock_release", perf_evsel__process_lock_release, }, /* CONFIG_LOCKDEP */
};
+static bool force;
+
static int __cmd_report(bool display_info)
{
int err = -EINVAL;
@@ -857,6 +859,7 @@ static int __cmd_report(bool display_info)
struct perf_data_file file = {
.path = input_name,
.mode = PERF_DATA_MODE_READ,
+ .force = force,
};
session = perf_session__new(&file, false, &eops);
@@ -945,6 +948,7 @@ int cmd_lock(int argc, const char **argv, const char *prefix __maybe_unused)
"dump thread list in perf.data"),
OPT_BOOLEAN('m', "map", &info_map,
"map of lock instances (address:name table)"),
+ OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
OPT_END()
};
const struct option lock_options[] = {
@@ -956,6 +960,7 @@ int cmd_lock(int argc, const char **argv, const char *prefix __maybe_unused)
const struct option report_options[] = {
OPT_STRING('k', "key", &sort_key, "acquired",
"key for sorting (acquired / contended / avg_wait / wait_total / wait_max / wait_min)"),
+ OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
/* TODO: type */
OPT_END()
};
--
1.8.5.2
next prev parent reply other threads:[~2015-04-02 13:45 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-02 13:47 [PATCH 00/10] perf tools: Support using -f to override file ownership for perf commands Yunlong Song
2015-04-02 13:47 ` [PATCH 01/10] perf tools: Support using -f to override perf.data file ownership for evlist Yunlong Song
2015-04-03 5:08 ` [tip:perf/core] perf evlist: Support using -f to override perf.data file ownership tip-bot for Yunlong Song
2015-04-02 13:47 ` [PATCH 02/10] perf tools: Support using -f to override perf.data file ownership for inject Yunlong Song
2015-04-03 5:08 ` [tip:perf/core] perf inject: Support using -f to override perf.data file ownership tip-bot for Yunlong Song
2015-04-02 13:47 ` [PATCH 03/10] perf tools: Support using -f to override perf.data file ownership for kmem Yunlong Song
2015-04-03 5:08 ` [tip:perf/core] perf kmem: Support using -f to override perf.data file ownership tip-bot for Yunlong Song
2015-04-02 13:47 ` [PATCH 04/10] perf tools: Support using -f to override perf.data.guest file ownership for kvm Yunlong Song
2015-04-03 5:08 ` [tip:perf/core] perf kvm: Support using -f to override perf.data.guest file ownership tip-bot for Yunlong Song
2015-04-02 13:47 ` Yunlong Song [this message]
2015-04-03 5:09 ` [tip:perf/core] perf lock: Support using -f to override perf.data " tip-bot for Yunlong Song
2015-04-02 13:47 ` [PATCH 06/10] perf tools: Support using -f to override perf.data file ownership for mem Yunlong Song
2015-04-03 5:09 ` [tip:perf/core] perf mem: Support using -f to override perf.data file ownership tip-bot for Yunlong Song
2015-04-02 13:47 ` [PATCH 07/10] perf tools: Support using -f to override perf.data file ownership for script Yunlong Song
2015-04-03 5:09 ` [tip:perf/core] perf script: Support using -f to override perf.data file ownership tip-bot for Yunlong Song
2015-04-02 13:47 ` [PATCH 08/10] perf tools: Support using -f to override perf.data file ownership for timechart Yunlong Song
2015-04-03 5:10 ` [tip:perf/core] perf timechart: Support using -f to override perf.data file ownership tip-bot for Yunlong Song
2015-04-02 13:47 ` [PATCH 09/10] perf tools: Support using -f to override perf.data file ownership for trace Yunlong Song
2015-04-03 5:10 ` [tip:perf/core] perf trace: Support using -f to override perf.data file ownership tip-bot for Yunlong Song
2015-04-02 13:47 ` [PATCH 10/10] perf tools: Support using -f to override perf.data file ownership for data convert Yunlong Song
2015-04-03 5:10 ` [tip:perf/core] perf data: Support using -f to override perf.data file ownership for 'convert' tip-bot for Yunlong Song
2015-04-02 15:13 ` [PATCH 00/10] perf tools: Support using -f to override file ownership for perf commands Arnaldo Carvalho de Melo
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