From: Masami Hiramatsu <mhiramat@kernel.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: linux-kernel@vger.kernel.org, Namhyung Kim <namhyung@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Hemant Kumar <hemant@linux.vnet.ibm.com>,
Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>,
Brendan Gregg <brendan.d.gregg@gmail.com>
Subject: Re: [PATCH perf/core v13 02/15] perf probe: Show all cached probes
Date: Mon, 4 Jul 2016 11:03:29 +0900 [thread overview]
Message-ID: <20160704110329.16a776a8278115dc990b13c0@kernel.org> (raw)
In-Reply-To: <20160701135104.GM5324@kernel.org>
On Fri, 1 Jul 2016 10:51:04 -0300
Arnaldo Carvalho de Melo <acme@kernel.org> wrote:
> Em Fri, Jul 01, 2016 at 05:03:26PM +0900, Masami Hiramatsu escreveu:
> > From: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
> >
> > perf probe --list shows all cached probes when --cache
> > is given. Each caches are shown with on which binary that
> > probed. e.g.
> > -----
> > # perf probe --cache vfs_read \$params
>
> This one works:
>
> # perf probe --cache vfs_read \$params
> Added new event:
> probe:vfs_read (on vfs_read with $params)
>
> You can now use it in all perf tools, such as:
>
> perf record -e probe:vfs_read -aR sleep 1
>
> #
>
> > # perf probe --cache -x /lib64/libc-2.17.so getaddrinfo \$params
>
> But this one doesn't and provides a funny message:
>
> [root@jouet perf]# perf probe --cache -x /lib64/libc-2.23.so getaddrinfo \$params
> Failed to write event: Invalid argument
> Please upgrade your kernel to at least 3.14 to have access to feature $params
> Error: Failed to add events.
Ah, OK, $params requires debuginfo. It this error message is not correct.
I'll send a fix soon.
Thanks!!
--
Masami Hiramatsu <mhiramat@kernel.org>
next prev parent reply other threads:[~2016-07-04 2:03 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-01 8:03 [PATCH perf/core v13 00/15] perf-probe --cache and SDT support Masami Hiramatsu
2016-07-01 8:03 ` [PATCH perf/core v13 01/15] perf probe: Use cache entry if possible Masami Hiramatsu
2016-07-01 13:20 ` Arnaldo Carvalho de Melo
2016-07-05 10:16 ` [tip:perf/core] " tip-bot for Masami Hiramatsu
2016-07-01 8:03 ` [PATCH perf/core v13 02/15] perf probe: Show all cached probes Masami Hiramatsu
2016-07-01 13:51 ` Arnaldo Carvalho de Melo
2016-07-04 2:03 ` Masami Hiramatsu [this message]
2016-07-04 2:06 ` [PATCH perf/core] [BUGFIX] perf-probe: Fix to show correct error message for $vars and $params Masami Hiramatsu
2016-07-05 10:17 ` [tip:perf/core] perf probe: Show all cached probes tip-bot for Masami Hiramatsu
2016-07-01 8:03 ` [PATCH perf/core v13 03/15] perf probe: Remove caches when --cache is given Masami Hiramatsu
2016-07-05 10:17 ` [tip:perf/core] " tip-bot for Masami Hiramatsu
2016-07-01 8:03 ` [PATCH perf/core v13 04/15] perf/sdt: ELF support for SDT Masami Hiramatsu
2016-07-01 18:56 ` Arnaldo Carvalho de Melo
2016-07-04 5:25 ` Masami Hiramatsu
2016-07-05 10:18 ` [tip:perf/core] perf sdt: " tip-bot for Hemant Kumar
2016-07-01 8:04 ` [PATCH perf/core v13 05/15] perf probe: Add group name support Masami Hiramatsu
2016-07-05 10:19 ` [tip:perf/core] " tip-bot for Masami Hiramatsu
2016-07-01 8:04 ` [PATCH perf/core v13 06/15] perf buildid-cache: Scan and import user SDT events to probe cache Masami Hiramatsu
2016-07-01 18:22 ` Arnaldo Carvalho de Melo
2016-07-04 2:15 ` Masami Hiramatsu
2016-07-05 2:08 ` Masami Hiramatsu
2016-07-05 10:19 ` [tip:perf/core] " tip-bot for Masami Hiramatsu
2016-07-01 8:04 ` [PATCH perf/core v13 07/15] perf probe: Accept %sdt and %cached event name Masami Hiramatsu
2016-07-01 8:04 ` [PATCH perf/core v13 08/15] perf-probe: Make --list shows only available cached events Masami Hiramatsu
2016-07-01 8:04 ` [PATCH perf/core v13 09/15] perf: probe-cache: Add for_each_probe_cache_entry() wrapper Masami Hiramatsu
2016-07-01 8:04 ` [PATCH perf/core v13 10/15] perf probe: Allow wildcard for cached events Masami Hiramatsu
2016-07-01 8:04 ` [PATCH perf/core v13 11/15] perf probe: Search SDT/cached event from all probe caches Masami Hiramatsu
2016-07-01 8:05 ` [PATCH perf/core v13 12/15] perf probe: Support @BUILDID or @FILE suffix for SDT events Masami Hiramatsu
2016-07-01 8:05 ` [PATCH perf/core v13 13/15] perf probe: Support a special SDT probe format Masami Hiramatsu
2016-07-01 8:05 ` [PATCH perf/core v13 14/15] perf build: Add sdt feature detection Masami Hiramatsu
2016-07-01 8:05 ` [PATCH perf/core v13 15/15] perf-test: Add a test case for SDT event Masami Hiramatsu
2016-07-01 13:19 ` [PATCH perf/core v13 00/15] perf-probe --cache and SDT support Arnaldo Carvalho de Melo
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