From: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
To: Pekka Enberg <penberg@iki.fi>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
Hemant Kumar <hkshaw@linux.vnet.ibm.com>,
LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Oleg Nesterov <oleg@redhat.com>,
hegdevasant@linux.vnet.ibm.com, Ingo Molnar <mingo@redhat.com>,
anton@redhat.com, systemtap@sourceware.org,
Namhyung Kim <namhyung@kernel.org>,
aravinda@linux.vnet.ibm.com
Subject: Re: [PATCH v4 2/3] Support for perf to probe into SDT markers:
Date: Mon, 28 Oct 2013 19:41:52 +0530 [thread overview]
Message-ID: <20131028141152.GA1040@linux.vnet.ibm.com> (raw)
In-Reply-To: <526E5BA5.7050103@iki.fi>
* Pekka Enberg <penberg@iki.fi> [2013-10-28 14:42:13]:
> >So, it still needs a concrete binary path to list or, we should
> >support a syntax which specify actual binary, as like as below.
> >
> > perf probe 'my_event=%libc:setjmp@/lib64/libc.so.6'
> >
> >And perf list may show the marker as in same syntax (for copy&paste).
> >
> ># perf list --sdt
> > %libc:setjmp@/lib64/libc.so.6
> > ...
> >
> >Note that we need '%' to separate namespace :(, since user can define
> >any marker(provider) name in their binary...
>
> Sure, you need to support that sort of 'fully qualified name' for
> duplicate symbols but the default 'libc:setjmp' should still point
> to system libc.
But what if a system has both 32 bit libc and 64 bit libc?
Wont we could end up with 2 libc:setjmp?
Should we give some more intelligence into perf to choose the 64 bit
libc over 32 bit one?
--
Thanks and Regards
Srikar Dronamraju
next prev parent reply other threads:[~2013-10-28 14:26 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-23 5:04 [PATCH v4 0/3] perf support to SDT markers Hemant Kumar
2013-10-23 5:04 ` [PATCH v4 1/3] SDT markers listing by perf: Hemant Kumar
2013-10-23 5:05 ` [PATCH v4 2/3] Support for perf to probe into SDT markers: Hemant Kumar
2013-10-24 5:45 ` Masami Hiramatsu
2013-10-24 10:25 ` Hemant Kumar
2013-10-25 12:38 ` Pekka Enberg
2013-10-25 12:59 ` Srikar Dronamraju
2013-10-25 14:20 ` Pekka Enberg
2013-10-25 15:20 ` David Ahern
2013-10-28 8:48 ` Pekka Enberg
2013-10-28 16:59 ` David Ahern
2013-10-28 18:45 ` Pekka Enberg
2013-10-29 9:55 ` Hemant Kumar
2013-10-29 14:05 ` Pekka Enberg
2013-10-29 19:41 ` Hemant Kumar
2013-10-30 10:22 ` Masami Hiramatsu
2013-10-26 9:50 ` Ingo Molnar
2013-10-28 8:56 ` Pekka Enberg
2013-10-28 10:57 ` Masami Hiramatsu
2013-10-29 5:50 ` Namhyung Kim
2013-10-26 11:16 ` Frank Ch. Eigler
2013-10-28 8:40 ` Pekka Enberg
2013-10-28 10:34 ` Ingo Molnar
2013-10-30 10:05 ` Masami Hiramatsu
2013-10-30 11:51 ` Pekka Enberg
2013-10-31 9:59 ` Ingo Molnar
2013-10-31 10:54 ` Mark Wielaard
2013-10-31 10:57 ` Ingo Molnar
2013-10-31 13:12 ` Peter Zijlstra
2013-10-31 13:23 ` Mark Wielaard
2013-10-30 13:30 ` Hemant Kumar
2013-10-28 11:23 ` Masami Hiramatsu
2013-10-28 12:42 ` Pekka Enberg
2013-10-28 14:11 ` Srikar Dronamraju [this message]
2013-10-28 14:21 ` Pekka Enberg
2013-10-28 17:31 ` Srikar Dronamraju
2013-10-28 17:48 ` Pekka Enberg
2013-10-29 3:19 ` Masami Hiramatsu
2013-10-29 5:31 ` Namhyung Kim
2013-10-29 14:51 ` Mark Wielaard
2013-10-29 19:54 ` Pekka Enberg
2013-10-29 2:51 ` Masami Hiramatsu
2013-10-23 5:05 ` [PATCH v4 3/3] Documentation regarding perf/sdt Hemant Kumar
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