From: Peter Zijlstra <peterz@infradead.org>
To: Kan Liang <kan.liang@intel.com>
Cc: eranian@google.com, linux-kernel@vger.kernel.org,
mingo@redhat.com, paulus@samba.org, acme@kernel.org,
jolsa@redhat.com, ak@linux.intel.com
Subject: Re: [PATCH V7 11/17] perf, core: expose LBR call stack to user perf tool
Date: Wed, 5 Nov 2014 10:20:56 +0100 [thread overview]
Message-ID: <20141105092056.GO10501@worktop.programming.kicks-ass.net> (raw)
In-Reply-To: <1415156173-10035-12-git-send-email-kan.liang@intel.com>
On Tue, Nov 04, 2014 at 09:56:07PM -0500, Kan Liang wrote:
> From: Yan, Zheng <zheng.z.yan@intel.com>
Now for this patch I'm fairly sure Zheng didn't actually write it; his
last posting did something different IIRC.
> With LBR call stack feature enable, there are two call chain data
_three_, LBR is the 3rd.
> sources, traditional frame pointer and LBR call stack.
> This patch extends the perf_callchain_entry struct to mark the available
> call chain source.
> The frame pointer is still output as PERF_SAMPLE_CALLCHAIN data format.
> The LBR call stack data will be output as PERF_SAMPLE_BRANCH_STACK data
> format.
I'm not sure what this patch does?! Why do the FP based callchains need
_any_ changes?
next prev parent reply other threads:[~2014-11-05 9:21 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-05 2:55 [PATCH V7 00/17] perf, x86: Haswell LBR call stack support Kan Liang
2014-11-05 2:55 ` [PATCH V7 01/17] perf, x86: Reduce lbr_sel_map size Kan Liang
2015-02-18 17:13 ` [tip:perf/core] perf/x86/intel: Reduce lbr_sel_map[] size tip-bot for Yan, Zheng
2014-11-05 2:55 ` [PATCH V7 02/17] perf, core: introduce pmu context switch callback Kan Liang
2015-02-18 17:14 ` [tip:perf/core] perf: Introduce " tip-bot for Yan, Zheng
2014-11-05 2:55 ` [PATCH V7 03/17] perf, x86: use context switch callback to flush LBR stack Kan Liang
2015-02-18 17:14 ` [tip:perf/core] perf/x86/intel: Use " tip-bot for Yan, Zheng
2014-11-05 2:56 ` [PATCH V7 04/17] perf, x86: Basic Haswell LBR call stack support Kan Liang
2015-02-18 17:14 ` [tip:perf/core] perf/x86/intel: Add basic " tip-bot for Yan, Zheng
2014-11-05 2:56 ` [PATCH V7 05/17] perf, core: pmu specific data for perf task context Kan Liang
2015-02-18 17:15 ` [tip:perf/core] perf: Add " tip-bot for Yan, Zheng
2015-12-09 8:34 ` Peter Zijlstra
2015-12-09 14:59 ` Liang, Kan
2015-12-09 15:14 ` Peter Zijlstra
2015-12-09 15:25 ` Liang, Kan
2014-11-05 2:56 ` [PATCH V7 06/17] perf, core: always switch pmu specific data during context switch Kan Liang
2015-02-18 17:15 ` [tip:perf/core] perf: Always " tip-bot for Yan, Zheng
2014-11-05 2:56 ` [PATCH V7 07/17] perf, x86: allocate space for storing LBR stack Kan Liang
2015-02-18 17:15 ` [tip:perf/core] perf/x86/intel: Allocate " tip-bot for Yan, Zheng
2014-11-05 2:56 ` [PATCH V7 08/17] perf, x86: track number of events that use LBR callstack Kan Liang
2015-02-18 17:15 ` [tip:perf/core] perf/x86/intel: Track number of events that use the " tip-bot for Yan, Zheng
2014-11-05 2:56 ` [PATCH V7 09/17] perf, x86: Save/resotre LBR stack during context switch Kan Liang
2015-02-18 17:16 ` [tip:perf/core] perf/x86/intel: Save/ restore " tip-bot for Yan, Zheng
2014-11-05 2:56 ` [PATCH V7 10/17] perf, core: simplify need branch stack check Kan Liang
2015-02-18 17:16 ` [tip:perf/core] perf: Simplify the " tip-bot for Yan, Zheng
2014-11-05 2:56 ` [PATCH V7 11/17] perf, core: expose LBR call stack to user perf tool Kan Liang
2014-11-05 9:20 ` Peter Zijlstra [this message]
2014-11-05 2:56 ` [PATCH V7 12/17] perf, x86: re-organize code that implicitly enables LBR/PEBS Kan Liang
2015-02-18 17:16 ` [tip:perf/core] perf/x86/intel: Re-organize " tip-bot for Yan, Zheng
2014-11-05 2:56 ` [PATCH V7 13/17] perf, x86: enable LBR callstack when recording callchain Kan Liang
2014-11-05 9:21 ` Peter Zijlstra
2014-11-05 9:58 ` Stephane Eranian
2014-11-05 10:43 ` Peter Zijlstra
2014-11-05 10:57 ` Stephane Eranian
2014-11-05 12:49 ` Peter Zijlstra
2014-11-05 13:22 ` Stephane Eranian
2014-11-05 15:45 ` Peter Zijlstra
2014-11-05 15:53 ` Liang, Kan
2014-11-05 16:29 ` Peter Zijlstra
2014-11-05 17:52 ` Andi Kleen
2014-11-05 17:57 ` Andi Kleen
2014-11-05 17:40 ` Andi Kleen
2014-11-05 2:56 ` [PATCH V7 14/17] perf, x86: disable FREEZE_LBRS_ON_PMI when LBR operates in callstack mode Kan Liang
2015-02-18 17:17 ` [tip:perf/core] perf/x86/intel: Disable " tip-bot for Yan, Zheng
2014-11-05 2:56 ` [PATCH V7 15/17] perf, x86: Discard zero length call entries in LBR call stack Kan Liang
2015-02-18 17:17 ` [tip:perf/core] perf/x86/intel: " tip-bot for Yan, Zheng
2014-11-05 2:56 ` [PATCH V7 16/17] perf tools: handle LBR call stack data Kan Liang
2014-11-05 2:56 ` [PATCH V7 17/17] perf tools: choose to dump callchain from LBR and FP Kan Liang
2014-11-05 9:37 ` [PATCH V7 00/17] perf, x86: Haswell LBR call stack support Peter Zijlstra
2014-11-05 16:22 ` Liang, Kan
2014-11-05 16:27 ` Peter Zijlstra
2014-11-05 17:02 ` Liang, Kan
2015-02-18 17:17 ` [tip:perf/core] perf/x86/intel: Expose LBR callstack to user space tooling tip-bot for Peter Zijlstra
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20141105092056.GO10501@worktop.programming.kicks-ass.net \
--to=peterz@infradead.org \
--cc=acme@kernel.org \
--cc=ak@linux.intel.com \
--cc=eranian@google.com \
--cc=jolsa@redhat.com \
--cc=kan.liang@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=paulus@samba.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox