linux-kernel - Re: [PATCH v2 02/14] perf: Add persistent 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: <20130624192404.GA24827@pd.tnic>
Date:	Mon, 24 Jun 2013 21:24:04 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Robert Richter <rric@...nel.org>, Ingo Molnar <mingo@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Jiri Olsa <jolsa@...hat.com>, linux-kernel@...r.kernel.org,
	Borislav Petkov <bp@...e.de>,
	Robert Richter <robert.richter@...aro.org>
Subject: Re: [PATCH v2 02/14] perf: Add persistent events

On Mon, Jun 24, 2013 at 11:28:07AM +0200, Peter Zijlstra wrote:
> I find this patch incomplete for its asymmetric; there a dec, but not an
> implied inc.

There's one in perf_mmap_open.

Basically the idea was to pull up the ->mmap_count decrement (haha,
sounds like excrement :-)) and not deallocate the ring buffers for a
persistent event.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
--
--
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/