From: Ingo Molnar <mingo@elte.hu>
To: Andrew Morton <akpm@osdl.org>
Cc: sekharan@us.ibm.com, torvalds@osdl.org,
linux-kernel@vger.kernel.org, nagar@watson.ibm.com,
balbir@in.ibm.com, arjan@infradead.org
Subject: Re: Random panics seen in 2.6.18-rc1
Date: Thu, 13 Jul 2006 10:49:12 +0200 [thread overview]
Message-ID: <20060713084912.GA7240@elte.hu> (raw)
In-Reply-To: <20060713074609.GA3620@elte.hu>
* Ingo Molnar <mingo@elte.hu> wrote:
> but ... i think gcc ought to be able to figure out that the parameter
> is totally unused on !LOCKDEP - all functions involved are static, and
> we are using -funit-at-a-time already. That should make the parameter
> passing totally zero-cost.
hm, gcc (as of 4.1.1) doesnt seem to be able to figure that out,
probably due to the 'nesting + 1' changing the variable.
Anyway, Arjan's nesting-type idea should solve the problem - in that
case 'nesting + 1' becomes an identity mapping of a zero-sized variable,
which will generate zero code.
Ingo
next prev parent reply other threads:[~2006-07-13 8:54 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-13 3:59 Random panics seen in 2.6.18-rc1 Chandra Seetharaman
2006-07-13 7:12 ` Ingo Molnar
2006-07-13 7:28 ` Andrew Morton
2006-07-13 7:26 ` Ingo Molnar
2006-07-13 7:44 ` Andrew Morton
2006-07-13 7:46 ` Ingo Molnar
2006-07-13 8:49 ` Ingo Molnar [this message]
2006-07-13 8:42 ` Ingo Molnar
2006-07-13 8:46 ` [patch] lockdep: more annotations for mm/slab.c Ingo Molnar
2006-07-13 9:08 ` Andrew Morton
2006-07-13 9:18 ` Ingo Molnar
2006-07-13 10:44 ` Arjan van de Ven
2006-07-13 10:58 ` Arjan van de Ven
2006-07-13 12:44 ` [patch] lockdep: undo mm/slab.c annotation Ingo Molnar
2006-07-13 12:46 ` [patch] lockdep: annotate mm/slab.c Ingo Molnar
2006-07-13 15:45 ` Pekka Enberg
2006-07-13 19:55 ` Ingo Molnar
2006-07-13 15:58 ` Pekka Enberg
2006-07-13 18:56 ` Linus Torvalds
2006-07-13 19:21 ` Arjan van de Ven
2006-07-13 22:27 ` Christoph Lameter
2006-07-13 23:08 ` Alok kataria
2006-07-13 22:51 ` Christoph Lameter
2006-07-13 23:16 ` Andrew Morton
2006-07-14 2:29 ` Christoph Lameter
2006-07-14 2:46 ` Christoph Lameter
2006-07-14 3:02 ` Andrew Morton
2006-07-14 3:35 ` Christoph Lameter
2006-07-14 3:45 ` Christoph Lameter
2006-07-14 16:48 ` Alok kataria
2006-07-14 2:54 ` Andrew Morton
2006-07-14 2:59 ` Christoph Lameter
2006-07-13 19:32 ` Ingo Molnar
2006-07-13 18:50 ` Linus Torvalds
2006-07-13 19:06 ` Arjan van de Ven
2006-07-13 19:21 ` Linus Torvalds
2006-07-13 19:26 ` Arjan van de Ven
2006-07-13 19:17 ` Ingo Molnar
2006-07-13 19:19 ` Ingo Molnar
2006-07-13 21:30 ` Andrew Morton
2006-07-13 13:51 ` Random panics seen in 2.6.18-rc1 Chandra Seetharaman
2006-07-13 16:05 ` Chandra Seetharaman
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=20060713084912.GA7240@elte.hu \
--to=mingo@elte.hu \
--cc=akpm@osdl.org \
--cc=arjan@infradead.org \
--cc=balbir@in.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=nagar@watson.ibm.com \
--cc=sekharan@us.ibm.com \
--cc=torvalds@osdl.org \
/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