From: Peter Zijlstra <peterz@infradead.org>
To: Stephane Eranian <eranian@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>,
acme@redhat.com, mingo@elte.hu, paulus@samba.org,
cjashfor@linux.vnet.ibm.com, fweisbec@gmail.com,
gorcunov@openvz.org, tzanussi@gmail.com, mhiramat@redhat.com,
robert.richter@amd.com, fche@redhat.com,
linux-kernel@vger.kernel.org, masami.hiramatsu.pt@hitachi.com,
drepper@gmail.com, asharma@fb.com,
benjamin.redelings@nescent.org
Subject: Re: [PATCH 02/19] perf: Add ability to attach user level registers dump to sample
Date: Thu, 14 Jun 2012 12:56:07 +0200 [thread overview]
Message-ID: <1339671367.2559.29.camel@twins> (raw)
In-Reply-To: <1339671058.2559.27.camel@twins>
On Thu, 2012-06-14 at 12:50 +0200, Peter Zijlstra wrote:
> On Thu, 2012-06-14 at 12:45 +0200, Stephane Eranian wrote:
> > > It would be a tedious endeavour since you'd need to have both output
> > > paths available for a good while, but it might be worth it in the long
> > > run depending on how painful the current format becomes.
> >
> > True. What we don't know however, it how many other tools are out
> > there using the kernel API directly.
>
> Right.. but if you leave the old stuff in for say 2 years and start
> emitting a warning on using the old stuff after 1 year.. give or take a
> few years we should be able to get the old stuff deprecated and removed.
Another thing I did consider was trying to JIT a whole output path in
order to reduce the insane amount of conditionals in there. It would be
very nice if GCC grew something to help stitch code snippets together so
we could write it arch independent.
next prev parent reply other threads:[~2012-06-14 10:56 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-11 13:19 [RFCv5 00/19] perf: Add backtrace post dwarf unwind Jiri Olsa
2012-06-11 13:19 ` [PATCH 01/19] perf: Unified API to record selective sets of arch registers Jiri Olsa
2012-06-11 13:19 ` [PATCH 02/19] perf: Add ability to attach user level registers dump to sample Jiri Olsa
2012-06-13 11:16 ` Stephane Eranian
2012-06-13 13:12 ` Jiri Olsa
2012-06-13 13:18 ` Stephane Eranian
2012-06-13 13:23 ` Jiri Olsa
2012-06-13 13:25 ` Stephane Eranian
2012-06-13 13:40 ` Peter Zijlstra
2012-06-13 13:41 ` Stephane Eranian
2012-06-13 13:51 ` Stephane Eranian
2012-06-14 8:36 ` Peter Zijlstra
2012-06-14 10:45 ` Stephane Eranian
2012-06-14 10:50 ` Peter Zijlstra
2012-06-14 10:56 ` Peter Zijlstra [this message]
2012-06-13 13:37 ` Peter Zijlstra
2012-06-13 13:29 ` Stephane Eranian
2012-06-11 13:19 ` [PATCH 03/19] perf, x86: Add copy_from_user_nmi_nochk for best effort copy Jiri Olsa
2012-06-11 13:19 ` [PATCH 04/19] perf: Factor __output_copy to be usable with specific copy function Jiri Olsa
2012-06-11 13:20 ` [PATCH 05/19] perf: Add perf_output_skip function to skip bytes in sample Jiri Olsa
2012-06-11 13:20 ` [PATCH 06/19] perf: Add ability to attach user stack dump to sample Jiri Olsa
2012-06-11 13:20 ` [PATCH 07/19] perf: Add attribute to filter out callchains Jiri Olsa
2012-06-11 13:20 ` [PATCH 08/19] perf, tool: Remove unsused evsel parameter from machine__resolve_callchain Jiri Olsa
2012-06-20 16:59 ` [tip:perf/core] perf tools: Remove unused " tip-bot for Jiri Olsa
2012-06-11 13:20 ` [PATCH 09/19] perf, tool: Factor DSO symtab types to generic binary types Jiri Olsa
2012-06-11 13:20 ` [PATCH 10/19] perf, tool: Add interface to read DSO image data Jiri Olsa
2012-06-11 13:20 ` [PATCH 11/19] perf, tool: Add '.note' check into search for NOTE section Jiri Olsa
2012-06-11 13:20 ` [PATCH 12/19] perf, tool: Back [vdso] DSO with real data Jiri Olsa
2012-06-29 18:49 ` Arnaldo Carvalho de Melo
2012-06-11 13:20 ` [PATCH 13/19] perf, tool: Add interface to arch registers sets Jiri Olsa
2012-06-11 13:20 ` [PATCH 14/19] perf, tool: Add libunwind dependency for dwarf cfi unwinding Jiri Olsa
2012-06-11 13:20 ` [PATCH 15/19] perf, tool: Support user regs and stack in sample parsing Jiri Olsa
2012-06-11 13:20 ` [PATCH 16/19] perf, tool: Support for dwarf cfi unwinding on post processing Jiri Olsa
2012-06-11 13:20 ` [PATCH 17/19] perf, tool: Support for dwarf mode callchain on perf record Jiri Olsa
2012-06-11 13:20 ` [PATCH 18/19] perf, tool: Add dso data caching Jiri Olsa
2012-06-11 13:20 ` [PATCH 19/19] perf, tool: Add dso data caching tests Jiri Olsa
2012-06-11 21:44 ` [RFCv5 00/19] perf: Add backtrace post dwarf unwind Benjamin Redelings
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