linux-kernel - Re: perf

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

Date:	Fri, 11 Jun 2010 23:25:28 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	paulus <paulus@...ba.org>,
	stephane eranian <eranian@...glemail.com>,
	Robert Richter <robert.richter@....com>,
	Will Deacon <will.deacon@....com>,
	Paul Mundt <lethal@...ux-sh.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: perf_disable()

On Fri, 2010-06-11 at 23:04 +0200, Frederic Weisbecker wrote:
> On Fri, Jun 11, 2010 at 06:29:44PM +0200, Peter Zijlstra wrote:
> > There is a fun little recursion issue with perf_adjust_period(), where
> > if we fully removed perf_disable() we could end up calling pmu::stop()
> > twice and such.
> 
> 
> 
> We can have a local_t made nesting level on the stop/start that could easily
> deal with this.

Fanning it out to the relevant pmu implementation is the interesting
part..


--
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/