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From: Ingo Molnar <mingo@kernel.org>
To: Namhyung Kim <namhyung@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	kernel-team@lge.com, Arnaldo Carvalho de Melo <acme@kernel.org>,
	Jiri Olsa <jolsa@kernel.org>,
	Milian Wolff <milian.wolff@kdab.com>,
	Yao Jin <yao.jin@linux.intel.com>
Subject: Re: [GIT PULL 0/7] perf/urgent callchain fixes
Date: Wed, 24 May 2017 08:53:23 +0200
Message-ID: <20170524065322.jk6v37rwtrdtvwy4@gmail.com> (raw)
In-Reply-To: <20170524062129.32529-1-namhyung@kernel.org>


* Namhyung Kim <namhyung@kernel.org> wrote:

> Hi Ingo,
> 
> Please consider pulling the perf tooling changes below.  Build tested
> on Ubuntu, Fedora and Archlinux.  I found a problem during `perf test`
> but it seems unrelated to this series.  Will take a look it later.
> 
> Thanks,
> Namhyung
> 
> 
> The following changes since commit 88b0193d9418c00340e45e0a913a0813bc6c8c96:
> 
>   perf/callchain: Force USER_DS when invoking perf_callchain_user() (2017-05-10 07:54:00 +0200)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf tags/perf-urgent-for-mingo-4.12-20170524
> 
> for you to fetch changes up to 37d4e1b6ba56773cef96122dff4436c2c534c381:
> 
>   perf tools: Fix to put caller above callee in children mode (2017-05-24 08:51:11 +0900)
> 
> ----------------------------------------------------------------
> perf/urgent fixes
> 
> Fixes:
> 
>  - Fix segfault on `perf report -g srcline` if a callchain address
>    cannot find a map for some reason.  The srcline sorting mode needs
>    a DSO to resolve line numbers and it's accessed via a map.  But it
>    should check if map is available for the address first.  (Milian Wolff)
> 
>  - Fix off-by-one for srcline output.  It passed (unwound) address to
>    resolve srcline for callchains.  But it's a return address of the
>    function which points to a next instruction.  This leads to
>    off-by-one for srcline info.  So pass the "address - 1" instead to
>    get the correct srcline.  This also considers "signal frame" as
>    well which has the exact address, so pass the address directly in
>    this case.  (Milian Wolff)
> 
>  - Fix missing inlined function.  Current code missed to display
>    inlined functions at the end.  This was found when comparing the
>    output of addr2line and perf script.  (Milian Wolff)
>    
>  
> User Visible:
> 
>  - `perf script` also gained `--inline` option to show inlined
>    functions with callchains.  This helped to find a bug in the
>    current inline code.  (Namhyung Kim)
> 
>  - Fix missed callchain ordering with `-g callee/caller` when libbfd
>    is not available.  (Milian Wolff)
>  
>  - Reorder output entries in `perf report --children` so that it can
>    put parent entries above their children.  It worked like this but
>    missed when callchain display order was changed with `-g caller`.
>    Now default is `-g caller` if children mode enabled.  (Namhyung Kim)
> 
> 
> ----------------------------------------------------------------
> 
> Milian Wolff (5):
>       perf report: don't crash on invalid maps in `-g srcline` mode
>       perf report: fix memory leak in addr2line when called by addr2inlines
>       perf report: fix off-by-one for non-activation frames
>       perf report: always honor callchain order for inlined nodes
>       perf report: do not drop last inlined frame
> 
> Namhyung Kim (2):
>       perf script: Add --inline option
>       perf tools: Fix to put caller above callee in children mode
> 
>  tools/perf/Documentation/perf-script.txt |  4 +++
>  tools/perf/builtin-script.c              |  2 ++
>  tools/perf/ui/hist.c                     |  2 ++
>  tools/perf/util/callchain.c              | 13 ++++++---
>  tools/perf/util/evsel_fprintf.c          | 33 +++++++++++++++++++++
>  tools/perf/util/srcline.c                | 49 +++++++++++++++++---------------
>  tools/perf/util/unwind-libdw.c           |  6 +++-
>  tools/perf/util/unwind-libunwind-local.c | 11 +++++++
>  8 files changed, 92 insertions(+), 28 deletions(-)

Thanks, I've applied the fixes from email with some minor tweaks to the 
changelogs.

I also noticed that we now have a lot of warnings about out of sync headers:

Warning: include/uapi/linux/stat.h differs from kernel
Warning: arch/x86/include/asm/disabled-features.h differs from kernel
Warning: arch/x86/include/asm/required-features.h differs from kernel
Warning: arch/x86/include/asm/cpufeatures.h differs from kernel
Warning: arch/x86/include/uapi/asm/kvm.h differs from kernel
Warning: arch/x86/include/uapi/asm/vmx.h differs from kernel
Warning: arch/powerpc/include/uapi/asm/kvm.h differs from kernel
Warning: arch/s390/include/uapi/asm/kvm.h differs from kernel
Warning: arch/arm/include/uapi/asm/kvm.h differs from kernel
Warning: arch/arm64/include/uapi/asm/kvm.h differs from kernel

... will post a separate patch for that.

Thanks,

	Ingo

  parent reply index

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-24  6:21 Namhyung Kim
2017-05-24  6:21 ` [PATCH 1/7] perf report: don't crash on invalid maps in `-g srcline` mode Namhyung Kim
2017-05-24  7:03   ` [tip:perf/urgent] perf report: Don't " tip-bot for Milian Wolff
2017-05-24  6:21 ` [PATCH 2/7] perf report: fix memory leak in addr2line when called by addr2inlines Namhyung Kim
2017-05-24  7:04   ` [tip:perf/urgent] perf report: Fix " tip-bot for Milian Wolff
2017-05-24  6:21 ` [PATCH 3/7] perf report: fix off-by-one for non-activation frames Namhyung Kim
2017-05-24  7:05   ` [tip:perf/urgent] perf report: Fix " tip-bot for Milian Wolff
2017-05-24  6:21 ` [PATCH 4/7] perf script: Add --inline option Namhyung Kim
2017-05-24  6:38   ` Ingo Molnar
2017-05-24  7:13     ` Namhyung Kim
2017-05-24  7:21       ` Ingo Molnar
2017-05-24  7:53         ` Milian Wolff
2017-05-24  8:06           ` Ingo Molnar
2017-05-24  7:05   ` [tip:perf/urgent] perf script: Add --inline option for debugging tip-bot for Namhyung Kim
2017-05-24  6:21 ` [PATCH 5/7] perf report: always honor callchain order for inlined nodes Namhyung Kim
2017-05-24  7:06   ` [tip:perf/urgent] perf report: Always " tip-bot for Milian Wolff
2017-05-24  6:21 ` [PATCH 6/7] perf report: do not drop last inlined frame Namhyung Kim
2017-05-24  7:06   ` [tip:perf/urgent] perf report: Do " tip-bot for Milian Wolff
2017-05-24  6:21 ` [PATCH 7/7] perf tools: Fix to put caller above callee in children mode Namhyung Kim
2017-05-24  7:07   ` [tip:perf/urgent] perf tools: Put caller above callee in --children mode tip-bot for Namhyung Kim
2017-05-24  6:53 ` Ingo Molnar [this message]
2017-05-24  6:57   ` [PATCH] tools/include: Sync kernel ABI headers with tooling headers Ingo Molnar
2017-05-24  7:07     ` [tip:perf/urgent] " tip-bot for Ingo Molnar
2017-06-08 13:15 ` [GIT PULL 0/7] perf/urgent callchain fixes Milian Wolff
2017-06-08 13:59   ` Arnaldo Carvalho de Melo
2017-06-08 14:34     ` Milian Wolff

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