From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
To: Jens Axboe <axboe@kernel.dk>
Cc: Jesper Juhl <jj@chaosbits.net>,
linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Tom Zanussi <zanussi@us.ibm.com>,
Karim Yaghmour <karim@opersys.com>,
Paul Mundt <lethal@linux-sh.org>,
Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [PATCH] Optimize relay_alloc_page_array() slightly by using vzalloc rather than vmalloc and memset
Date: Mon, 1 Nov 2010 09:08:42 -0400 [thread overview]
Message-ID: <20101101130842.GA24605@Krystal> (raw)
In-Reply-To: <4CCEB723.2010005@kernel.dk>
* Jens Axboe (axboe@kernel.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
next prev parent reply other threads:[~2010-11-01 13:13 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-30 20:26 [PATCH] Optimize relay_alloc_page_array() slightly by using vzalloc rather than vmalloc and memset Jesper Juhl
2010-10-30 21:47 ` Mathieu Desnoyers
2010-10-30 21:50 ` Jesper Juhl
2010-10-31 18:39 ` Mathieu Desnoyers
2010-11-01 0:46 ` Andrew Morton
2010-11-01 6:58 ` Pekka Enberg
2010-11-01 11:27 ` Mathieu Desnoyers
2010-11-01 12:26 ` Américo Wang
2010-11-01 13:38 ` Mathieu Desnoyers
2010-11-01 12:22 ` Américo Wang
2010-11-01 13:00 ` el es
2010-11-01 12:48 ` Jens Axboe
2010-11-01 13:08 ` Mathieu Desnoyers [this message]
2010-11-01 13:34 ` Jens Axboe
2010-11-01 13:41 ` Pekka Enberg
2010-11-01 13:42 ` Jens Axboe
2010-11-01 16:00 ` Mathieu Desnoyers
2010-11-01 18:02 ` Jesper Juhl
2010-11-01 18:26 ` Mathieu Desnoyers
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20101101130842.GA24605@Krystal \
--to=mathieu.desnoyers@polymtl.ca \
--cc=akpm@linux-foundation.org \
--cc=axboe@kernel.dk \
--cc=jj@chaosbits.net \
--cc=karim@opersys.com \
--cc=lethal@linux-sh.org \
--cc=linux-kernel@vger.kernel.org \
--cc=rostedt@goodmis.org \
--cc=zanussi@us.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.