linux-kernel - Re: [PATCH 1/2] perf, tools, stat: Initialize statistics correctly

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: <20140409134242.GD2556@krava.brq.redhat.com>
Date:	Wed, 9 Apr 2014 15:42:42 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	acme@...radead.org, mingo@...nel.org, linux-kernel@...r.kernel.org,
	peterz@...radead.org, eranian@...gle.com, namhyung@...nel.org,
	Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 1/2] perf, tools, stat: Initialize statistics correctly

On Tue, Mar 25, 2014 at 10:31:38AM -0700, Andi Kleen wrote:
> From: Andi Kleen <ak@...ux.intel.com>
> 
> perf stat did initialize the stats structure used to compute
> stddev etc. incorrectly. It merely zeroes it. But one member
> (min) needs to be set to a non zero value. This causes min
> to be not computed at all. Call init_stats() correctly.
> 
> It doesn't matter for stat currently because it doesn't use
> min, but it's still better to do it correctly.
> 
> The other users of statistics are already correct.
> 
> Signed-off-by: Andi Kleen <ak@...ux.intel.com>

Acked-by: Jiri Olsa <jolsa@...hat.com>

thanks,
jirka
--
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/