linux-kernel - Re: [PATCH 1/3] perf: add context field to 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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <4E284CC4.8060902@redhat.com>
Date:	Thu, 21 Jul 2011 18:59:00 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Will Deacon <will.deacon@....com>
CC:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Frederic Weisbecker <fweisbec@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	"acme@...stprotocols.net" <acme@...stprotocols.net>,
	Jason Wessel <jason.wessel@...driver.com>
Subject: Re: [PATCH 1/3] perf: add context field to perf_event

On 07/21/2011 06:46 PM, Will Deacon wrote:
> >
> >  This is (and must be) called from a preempt disabled context, no mutexes
> >  around here.
>
> Bah, yes, that is essential if you're dealing with current. Maybe use a
> spinlock instead?

Could work.  Not thrilled about adding it to the kvm hot path, but I 
can't say it will make a measurable impact.

-- 
error compiling committee.c: too many arguments to function

--
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/