From: Tejun Heo <tj@kernel.org>
To: Namhyung Kim <namhyung@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>,
linux-kernel@vger.kernel.org,
Steven Rostedt <rostedt@goodmis.org>,
dm-devel@redhat.com
Subject: Re: [PATCH] block: add missing block_bio_complete() tracepoint
Date: Sun, 29 Jan 2012 21:54:59 -0800 [thread overview]
Message-ID: <20120130055459.GJ17211@htj.dyndns.org> (raw)
In-Reply-To: <4F262FEF.9020406@gmail.com>
On Mon, Jan 30, 2012 at 02:51:43PM +0900, Namhyung Kim wrote:
> Hi,
>
> 2012-01-30 11:53 AM, Tejun Heo wrote:
> >Hello,
> >
> >On Mon, Jan 30, 2012 at 11:49:43 AM +0900, Namhyung Kim wrote:
> >>Yes, blktrace will see both of completions for rq and bio's it
> >>contains from now on, and I thought it's your intention? For the
> >>bounced bio's, it'll see one more completion per bio.
> >
> >Umm... no, blktrace users shouldn't see confusing outputs. My point
> >was that we should leave raw tracepoints as raw monitor points so that
> >they can provide raw data to different users and filter from
> >blktrace.c so that the existing users aren't disturbed.
> >
>
> That means blktrace should not be changed, and not see duplicated
> completions for rq based drivers at all?
Yeap
--
tejun
next prev parent reply other threads:[~2012-01-30 5:55 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-29 9:41 [PATCH] block: add missing block_bio_complete() tracepoint Namhyung Kim
2012-01-29 19:24 ` Tejun Heo
2012-01-30 1:44 ` Namhyung Kim
2012-01-30 1:47 ` Tejun Heo
2012-01-30 2:22 ` Namhyung Kim
2012-01-30 2:30 ` Tejun Heo
2012-01-30 2:49 ` Namhyung Kim
2012-01-30 2:53 ` Tejun Heo
2012-01-30 5:51 ` Namhyung Kim
2012-01-30 5:54 ` Tejun Heo [this message]
2012-01-30 6:02 ` Namhyung Kim
2012-01-30 6:38 ` Namhyung Kim
2012-01-30 17:05 ` Tejun Heo
2012-01-31 6:30 ` Namhyung Kim
2012-01-31 10:39 ` Tejun Heo
2012-02-01 2:18 ` Namhyung Kim
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