linux-kernel - Re: [PATCH RFC v2 0/4] perf: IRQ-bound performance events

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: <20140113155034.GA10355@localhost.localdomain>
Date:	Mon, 13 Jan 2014 16:50:37 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Alexander Gordeev <agordeev@...hat.com>
Cc:	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Jiri Olsa <jolsa@...hat.com>, Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Andi Kleen <ak@...ux.jf.intel.com>
Subject: Re: [PATCH RFC v2 0/4] perf: IRQ-bound performance events

On Sat, Jan 04, 2014 at 07:22:32PM +0100, Alexander Gordeev wrote:
> Hello,
> 
> This is version 2 of RFC "perf: IRQ-bound performance events". That is an
> introduction of IRQ-bound performance events - ones that only count in a
> context of a hardware interrupt handler. Ingo suggested to extend this
> functionality to softirq and threaded handlers as well:

Hi Alexander,

I still strongly think we should use toggle events to achieve that:
https://lkml.org/lkml/2013/9/25/227

This will let us count not just IRQs (-e 'cycles,irq_entry/on=cycles/,irq_exit/off=cycles/') but much more. 

The patchset still needs some polishing but I think that's a better diection.

Thanks.
--
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/