From: Dave Jones <davej@redhat.com>
To: Dave Chinner <david@fromorbit.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Al Viro <viro@zeniv.linux.org.uk>,
Eric Sandeen <sandeen@sandeen.net>,
Linux Kernel <linux-kernel@vger.kernel.org>,
xfs@oss.sgi.com
Subject: Re: 3.14-rc2 XFS backtrace because irqs_disabled.
Date: Sat, 15 Feb 2014 17:28:44 -0500 [thread overview]
Message-ID: <20140215222844.GA18201@redhat.com> (raw)
In-Reply-To: <20140215222356.GU13997@dastard>
On Sun, Feb 16, 2014 at 09:23:56AM +1100, Dave Chinner wrote:
> There's a pretty massive difference between the actual stack usage
> of the local variables and the amount of stack being used by the
> compiled code.
>
> What it appears to be is that the compiler is pushing 6-10 registers
> to the stack on every function call. So a function that only has 3
> local variables and does very little but allocate a structure and
> call other functions saves an 6 registers to the stack before it
> starts:
I've got a shitload of debug options enabled, which may explain it.
Or perhaps that new STACK_PROTECTOR_STRONG stuff ?
Dave
next prev parent reply other threads:[~2014-02-15 22:28 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-11 17:27 3.14-rc2 XFS backtrace because irqs_disabled Dave Jones
2014-02-11 21:08 ` Dave Chinner
2014-02-11 21:49 ` Eric Sandeen
2014-02-12 0:44 ` Dave Jones
2014-02-12 1:09 ` Al Viro
2014-02-12 2:52 ` Linus Torvalds
2014-02-12 4:03 ` Dave Jones
2014-02-12 4:22 ` Al Viro
2014-02-12 5:40 ` Dave Chinner
2014-02-12 5:50 ` Dave Jones
2014-02-12 6:10 ` Dave Chinner
2014-02-12 6:31 ` Dave Chinner
2014-02-12 6:59 ` Linus Torvalds
2014-02-12 8:13 ` Tejun Heo
2014-02-12 12:44 ` Steven Rostedt
2014-02-12 8:35 ` Dave Chinner
2014-02-12 12:50 ` Steven Rostedt
2014-02-12 12:40 ` Steven Rostedt
2014-02-12 13:29 ` Peter Zijlstra
2014-02-12 14:25 ` Dave Jones
2014-02-12 21:14 ` Dave Chinner
2014-02-12 15:57 ` Eric Sandeen
2014-02-12 6:28 ` Linus Torvalds
2014-02-12 7:18 ` Dave Chinner
2014-02-14 0:24 ` Dave Chinner
2014-02-14 16:01 ` Dave Jones
2014-02-15 22:23 ` Dave Chinner
2014-02-15 22:28 ` Dave Jones [this message]
2014-02-15 22:43 ` Linus Torvalds
2014-02-15 23:50 ` Linus Torvalds
2014-02-18 1:27 ` Dave Chinner
2014-02-12 11:39 ` Al Viro
2014-02-12 20:13 ` Linus Torvalds
2014-02-12 21:14 ` Al Viro
2014-02-12 21:32 ` Linus Torvalds
2014-02-12 21:44 ` Al Viro
2014-02-13 20:51 ` Al Viro
2014-02-14 0:09 ` Al Viro
2014-02-14 13:25 ` Christoph Hellwig
2014-02-14 13:29 ` Richard Weinberger
2014-02-14 15:20 ` Al Viro
2014-02-14 16:08 ` Oleg Nesterov
2014-02-13 17:40 ` Oleg Nesterov
2014-02-13 17:58 ` Linus Torvalds
2014-02-13 18:10 ` Oleg Nesterov
2014-02-13 18:37 ` Oleg Nesterov
2014-02-15 5:25 ` Al Viro
2014-02-15 14:27 ` Oleg Nesterov
2014-02-15 15:22 ` Al Viro
2014-02-15 15:33 ` Oleg Nesterov
2014-02-15 15:36 ` Al Viro
2014-02-15 15:58 ` Al Viro
2014-02-15 16:59 ` Al Viro
2014-02-15 17:43 ` Oleg Nesterov
2014-02-15 18:05 ` Al Viro
2014-02-15 18:45 ` Oleg Nesterov
2014-02-17 16:57 ` Oleg Nesterov
2014-02-17 17:40 ` Al Viro
2014-02-17 17:46 ` Oleg Nesterov
2014-02-17 17:54 ` Al Viro
2014-02-14 16:13 ` Christoph Hellwig
2014-02-14 16:16 ` Al Viro
2014-02-14 16:18 ` Al Viro
2014-02-14 16:19 ` Christoph Hellwig
2014-02-15 14:46 ` Oleg Nesterov
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=20140215222844.GA18201@redhat.com \
--to=davej@redhat.com \
--cc=david@fromorbit.com \
--cc=linux-kernel@vger.kernel.org \
--cc=sandeen@sandeen.net \
--cc=torvalds@linux-foundation.org \
--cc=viro@zeniv.linux.org.uk \
--cc=xfs@oss.sgi.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).