linux-kernel - [PATCH v2 0/7] perf trace pagefaults

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Date:	Fri, 20 Jun 2014 14:49:42 +0400
From:	Stanislav Fomichev <stfomichev@...dex-team.ru>
To:	a.p.zijlstra@...llo.nl, paulus@...ba.org, mingo@...hat.com,
	acme@...nel.org, dsahern@...il.com, stfomichev@...dex-team.ru,
	jolsa@...hat.com, xiaoguangrong@...ux.vnet.ibm.com,
	yangds.fnst@...fujitsu.com, adrian.hunter@...el.com,
	namhyung@...nel.org
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/7] perf trace pagefaults

This patch series adds support for pagefaults tracing to 'perf trace' command.
It seems this feature was planned by Namhyung Kim (http://events.linuxfoundation.org/images/stories/pdf/klf2012_n_kim.pdf page 17/28)
but I couldn't find any prior patches/discussion and started from scratch.

First three patches add the feature and options to enable faults and disable
syscalls.
Two last patches add events caching (like it's done in the perf kvm), so that
we don't get fault events prior to mmap/comm events (makes sense only
for live mode).

This is just a proof-of-concept, and I'd like to get some comments about
where and what I got wrong and what additional useful information I can
expose in the trace.

v2:
  - added more info to the changelogs
  - reworked options (-f -> -F, --pgfaults -> --pf=[all|min|maj])
  - separated tracepoint_handler changes into additional patch
  - separated record/replay into additional patch
  - other fixes pointed out by Arnaldo Carvalho de Melo

Stanislav Fomichev (7):
  perf trace: add perf_event parameter to tracepoint_handler
  perf trace: add support for pagefault tracing
  perf trace: add pagefaults record and replay support
  perf trace: add pagefault statistics
  perf trace: add possibility to switch off syscall events
  perf kvm: move perf_kvm__mmap_read into session utils
  perf trace: add events cache

 tools/perf/Documentation/perf-trace.txt |  19 ++
 tools/perf/builtin-kvm.c                |  88 +-------
 tools/perf/builtin-trace.c              | 350 ++++++++++++++++++++++----------
 tools/perf/util/session.c               |  85 ++++++++
 tools/perf/util/session.h               |   5 +
 5 files changed, 357 insertions(+), 190 deletions(-)

-- 
1.8.3.2

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