linux-kernel - Re: [PATCH] Optimize relay_alloc_page_array() slightly by using vzalloc rather than vmalloc and memset

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: <20101101130842.GA24605@Krystal>
Date:	Mon, 1 Nov 2010 09:08:42 -0400
From:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
To:	Jens Axboe <axboe@...nel.dk>
Cc:	Jesper Juhl <jj@...osbits.net>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tom Zanussi <zanussi@...ibm.com>,
	Karim Yaghmour <karim@...rsys.com>,
	Paul Mundt <lethal@...ux-sh.org>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH] Optimize relay_alloc_page_array() slightly by using
	vzalloc rather than vmalloc and memset

* Jens Axboe (axboe@...nel.dk) wrote:
> On 2010-10-30 17:47, Mathieu Desnoyers wrote:
> > BLK_DEV_IO_TRACE seems to still select RELAY. Has it completed its
> > transition to either Ftrace or Perf ? Depending on Jens, moving blktrace
> > relay dependency to the Generic Ring Buffer Library might be a good
> > option to consider.
> 
> The blktrace user bits is still (by far) the most wide spread way that
> blktrace is used in the field, and those still rely on relayfs. So no,
> we can't kill it now.

What I am proposing is that the Generic Ring Buffer Library could
replace relayfs without changing any of the interfaces blktrace exposes
to user-space. Indeed, I would not remove relayfs unless there was a
replacement.

Thanks,

Mathieu


-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
--
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/