linux-kernel - Re: [PATCH] perf tool: Round mmap pages to power 2

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] [day] [month] [year] [list]

Message-ID: <20131111145908.GC27198@ghostprotocols.net>
Date:	Mon, 11 Nov 2013 11:59:08 -0300
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	David Ahern <dsahern@...il.com>, linux-kernel@...r.kernel.org,
	Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH] perf tool: Round mmap pages to power 2

Em Mon, Nov 11, 2013 at 12:27:54PM +0100, Ingo Molnar escreveu:
> * David Ahern <dsahern@...il.com> wrote:
> 
> > Currently perf requires the -m / --mmap_pages option to be a power of 2.
> > To be more user friendly perf should automatically round this up to the
> > next power of 2.
> > 
> > Currently:
> >   $ perf record -m 3 -a -- sleep 1
> >   --mmap_pages/-m value must be a power of two.sleep: Terminated
> > 
> > With patch:
> >   $ perf record -m 3 -a -- sleep 1
> >   rounding mmap pages size to 16384 (4 pages)
> 
> Please add 'bytes'.

Ok, waiting for v2 with this and Adrian's concerns addressed.

- Arnaldo
--
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/