linux-kernel - Re: [GIT PULL 0/8] perf/core improvements and fixes

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Date:	Thu, 18 Jun 2015 09:40:10 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	linux-kernel@...r.kernel.org,
	Adrian Hunter <adrian.hunter@...el.com>,
	Borislav Petkov <bp@...e.de>, David Ahern <dsahern@...il.com>,
	Don Zickus <dzickus@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	He Kuang <hekuang@...wei.com>, Jiri Olsa <jolsa@...hat.com>,
	Li Zhang <zhlcindy@...ux.vnet.ibm.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Naohiro Aota <naota@...sp.net>,
	Peter Zijlstra <peterz@...radead.org>, pi3orama@....com,
	Stephane Eranian <eranian@...gle.com>,
	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>,
	Wang Nan <wangnan0@...wei.com>, Zefan Li <lizefan@...wei.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [GIT PULL 0/8] perf/core improvements and fixes


* Arnaldo Carvalho de Melo <acme@...nel.org> wrote:

> Hi Ingo,
> 
> 	Please consider pulling, this is on top of perf-core-for-mingo, that is
> still outstanding,
> 
> Thanks!
> 
> - Arnaldo
> 
> The following changes since commit b031220d520238075bd99513a420e65cf37866ad:
> 
>   perf probe: Fix to return error if no probe is added (2015-06-16 11:39:51 -0300)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo-2
> 
> for you to fetch changes up to 5d484f99aed547e235f2229653c95392a1bc3692:
> 
>   perf top: Allow disabling/enabling events dynamicly (2015-06-17 16:50:52 -0300)
> 
> ----------------------------------------------------------------
> perf/core improvements and fixes:
> 
> User visible:
> 
> - Allow disabling/enabling events dynamicly in 'perf top':
>   a 'perf top' session can instantly become a 'perf report'
>   one, i.e. going from dynamic analysis to a static one,
>   returning to a dynamic one is possible, to toogle the
>   modes, just press CTRL+z. (Arnaldo Carvalho de Melo)

Nice!! :-)

Btw., it would be nice if the status line carried information about whether 
collection is 'frozen' or running, at a glance. A hint might also suggest how to 
unfreeze the session - in case someone pressed Ctrl-Z to suspend the perf top 
session ...

Also, there's now a GUI inconsistency with perf report: which will now exit on 
Ctrl-Z. It should probably print a warning in the status line instead, that 
freezing/unfreezing only works in 'perf top'.

> 
> - Greatly speed up 'perf probe --list' by caching debuginfo
>   (Masami Hiramatsu)
> 
> - Fix 'perf trace' race condition at the end of started
>   workloads (Sukadev Bhattiprolu)
> 
> - Fix a problem when opening old perf.data with different
>   byte order (Wang Nan)
> 
> Infrastructure:
> 
> - Ignore .config-detected in .gitignore (Wang Nan)
> 
> - Move libtraceevent dynamic list to separated LDFLAGS
>   variable (Wang Nan)
> 
> Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
> 
> ----------------------------------------------------------------
> Arnaldo Carvalho de Melo (2):
>       perf evlist: Add toggle_enable() method
>       perf top: Allow disabling/enabling events dynamicly
> 
> Masami Hiramatsu (2):
>       perf probe: Show usage even if the last event is skipped
>       perf probe: Speed up perf probe --list by caching debuginfo
> 
> Sukadev Bhattiprolu (1):
>       perf trace: Fix race condition at the end of started workloads
> 
> Wang Nan (3):
>       perf tools: Ignore .config-detected in .gitignore
>       perf tools: Fix a problem when opening old perf.data with different byte order
>       perf tools: Move libtraceevent dynamic list to separated LDFLAGS variable
> 
>  tools/perf/.gitignore          |  1 +
>  tools/perf/Makefile.perf       |  8 ++--
>  tools/perf/builtin-top.c       | 52 ++++++++++++++++++--------
>  tools/perf/ui/browsers/hists.c |  2 +
>  tools/perf/util/evlist.c       | 18 ++++++++-
>  tools/perf/util/evlist.h       |  2 +
>  tools/perf/util/probe-event.c  | 83 +++++++++++++++++++++++++++++++-----------
>  tools/perf/util/session.c      | 50 ++++++++++++++++++-------
>  8 files changed, 160 insertions(+), 56 deletions(-)

Pulled, thanks a lot Arnaldo!

	Ingo
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