linux-kernel - [RFC PATCH 0/5] perf trace pagefaults

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1403103565-6388-1-git-send-email-stfomichev@yandex-team.ru>
Date:	Wed, 18 Jun 2014 18:59:20 +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: [RFC PATCH 0/5] 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.

Stanislav Fomichev (5):
  perf trace: add support for pagefault tracing
  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              | 351 ++++++++++++++++++++++----------
 tools/perf/util/session.c               |  85 ++++++++
 tools/perf/util/session.h               |   5 +
 5 files changed, 353 insertions(+), 195 deletions(-)

-- 
1.8.3.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/