linux-kernel - [PATCH 0/2] Add perf debug dir locking

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Date:	Thu, 14 May 2015 09:28:09 +0200
From:	Milos Vyletel <milos@...hat.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Milos Vyletel <milos@...hat.com>, Jiri Olsa <jolsa@...nel.org>,
	He Kuang <hekuang@...wei.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	linux-kernel@...r.kernel.org (open list:PERFORMANCE EVENT...)
Subject: [PATCH 0/2] Add perf debug dir locking

Hi,

this series is follow up on my last submission where Jirka mentioned it would
be nice to have some locking around .debug dir operations.

https://lkml.org/lkml/2015/3/20/126

Following two patches add such functionality by utilizing flock. Since flock
supports both shared(read) and exclusive(write) locks both variants are being
added so that we can use multiple readers while only one writer.

Having said that any comments/suggestions on the code are welcome.

I did some basic testing. Mostly manual tool testing as well as the recreator
from above mentioned URL. I do not expect any functional change however more
testing is welcome.

Milos

Milos Vyletel (2):
  perf/tools: add read/write buildid dir locks
  perf/tools: put new buildid locks to use

 tools/perf/builtin-buildid-cache.c | 12 +++++
 tools/perf/util/build-id.c         | 97 ++++++++++++++++++++++++++++++++++----
 tools/perf/util/build-id.h         |  5 ++
 3 files changed, 106 insertions(+), 8 deletions(-)

-- 
2.4.0

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