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

From: Ingo Molnar
Date: Thu Jun 18 2015 - 03:40:25 EST



* Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> 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@xxxxxxxxxx>
>
> ----------------------------------------------------------------
> 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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