From: Theodore Tso <tytso@mit.edu>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Mike Snitzer <snitzer@gmail.com>,
linux-ext4@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: why unlikely(rsv) in ext3_clear_inode()?
Date: Mon, 27 Oct 2008 20:13:40 -0400 [thread overview]
Message-ID: <20081028001340.GB9797@mit.edu> (raw)
In-Reply-To: <alpine.DEB.1.10.0810271918390.19731@gandalf.stny.rr.com>
On Mon, Oct 27, 2008 at 07:32:11PM -0400, Steven Rostedt wrote:
> Attached is a patch that I used for counting.
>
> Here's my results:
> # cat /debug/tracing/ftrace_null
> 45
> # cat /debug/tracing/ftrace_nonnull
> 7
>
> Ah, seems that there is cases where it is nonnull more often. Anyway, it
> obviously is not a fast path (total of 52). Even if it was all null, it is
> not big enough to call for the confusion.
Silly question --- what was your test workload?
- Ted
next prev parent reply other threads:[~2008-10-28 0:13 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-27 22:29 why unlikely(rsv) in ext3_clear_inode()? Mike Snitzer
2008-10-27 22:53 ` Steven Rostedt
2008-10-27 23:32 ` Steven Rostedt
2008-10-27 23:48 ` Andrew Morton
2008-10-28 0:13 ` Theodore Tso [this message]
2008-10-28 0:21 ` Steven Rostedt
2008-10-28 4:12 ` [PATCH][RFC] trace: profile likely and unlikely annotations Steven Rostedt
2008-10-28 4:23 ` Arjan van de Ven
2008-10-28 4:39 ` Andrew Morton
2008-10-28 14:37 ` Theodore Tso
2008-10-28 14:48 ` Arjan van de Ven
2008-10-28 14:51 ` Steven Rostedt
2008-10-29 16:35 ` [PATCH 1/2 v2][RFC] " Steven Rostedt
2008-10-29 16:38 ` [PATCH 2/2 v2][RFC] ftrace: unlikely annotation tracer Steven Rostedt
2008-10-29 16:40 ` [PATCH 1/2 v2][RFC] trace: profile likely and unlikely annotations Arjan van de Ven
2008-10-29 22:39 ` [PATCH 1/2 v3][RFC] " Steven Rostedt
2008-10-29 22:40 ` [PATCH 2/2 v3][RFC] ftrace: unlikely annotation tracer Steven Rostedt
2008-10-30 14:32 ` [PATCH 1/2 v3][RFC] trace: profile likely and unlikely annotations Jörn Engel
2008-10-30 14:55 ` Theodore Tso
2008-10-30 15:10 ` Steven Rostedt
2008-10-28 14:49 ` [PATCH][RFC] " Steven Rostedt
2008-10-28 18:29 ` Theodore Tso
2008-10-28 18:41 ` Steven Rostedt
2008-10-28 0:14 ` why unlikely(rsv) in ext3_clear_inode()? Mike Snitzer
2008-10-27 23:52 ` Mingming Cao
2008-10-28 0:09 ` Mike Snitzer
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