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

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Message-ID: <4CCEB723.2010005@kernel.dk>
Date:	Mon, 01 Nov 2010 08:48:35 -0400
From:	Jens Axboe <axboe@...nel.dk>
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
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

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.

-- 
Jens Axboe

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