From: Zach Brown <zach.brown@oracle.com>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH 10/10] check pr_debug() arguments
Date: Mon, 11 Sep 2006 11:36:44 -0700 [thread overview]
Message-ID: <4505ACBC.9050505@oracle.com> (raw)
In-Reply-To: <20060908164908.abb98076.akpm@osdl.org>
>> This results in a seemingly insignificant code size increase. A x86-64
>> allyesconfig:
>>
>> text data bss dec hex filename
>> 25354768 7191098 4854720 37400586 23ab00a vmlinux.before
>> 25354945 7191138 4854720 37400803 23ab0e3 vmlinux
>
> Which would indicate that we might have expressions-with-side-effects
> inside pr_debug() statements somewhere, which is risky. I wonder where?
I browsed through some of the functions that bloat-o-meter reported an
increase for. Some seemed reasonable as they used things like current
or AFFS_I() in arguments. Others seemed pretty mysterious as they
didn't have obvious pr_debug() calls.
$ uname -m ; gcc --version
x86_64
gcc (GCC) 4.1.1 20060525 (Red Hat 4.1.1-1)
> btw, what's up with aio.c using a combination of pr_debug() and dprintk(),
> and a combination of `#ifdef DEBUG' and `#if DEBUG > 1'? Confusing.
I'm not sure how it got that way but I don't think anyone will object to
simplifying it. I'll spend those 5 minutes :).
> It would be nice to have a single way of doing developer-debug in-tree. We
> have 182(!) different definitions of dprintk(). Please nobody cc me on that
> discussion though ;)
Agreed, on both counts :).
- z
prev parent reply other threads:[~2006-09-11 18:36 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-08 22:54 [PATCH 0/10] introduction: check pr_debug() arguments Zach Brown
2006-09-08 22:54 ` [PATCH 1/10] futex: remove extra pr_debug format specifications Zach Brown
2006-09-08 22:54 ` [PATCH 2/10] aio: use size_t length modifier in pr_debug format arguments Zach Brown
2006-09-08 22:54 ` [PATCH 3/10] configfs: use size_t length modifier in pr_debug format argument Zach Brown
2006-09-09 0:15 ` Joel Becker
2006-09-08 22:54 ` [PATCH 4/10] sysfs: use size_t length modifier in pr_debug format arguments Zach Brown
2006-09-08 22:55 ` [PATCH 5/10] umem: repair nonexistant bh pr_debug reference Zach Brown
2006-09-08 22:55 ` [PATCH 6/10] tipar: repair nonexistant pr_debug argument use Zach Brown
2006-09-08 22:55 ` [PATCH 7/10] dell_rbu: fix pr_debug argument warnings Zach Brown
2006-09-08 22:55 ` [PATCH 8/10] ifb: replace missing comma to separate pr_debug arguments Zach Brown
2006-09-08 22:55 ` [PATCH 9/10] trident: use size_t length modifier in pr_debug format arguments Zach Brown
2006-09-08 22:55 ` [PATCH 10/10] check pr_debug() arguments Zach Brown
2006-09-08 23:49 ` Andrew Morton
2006-09-11 18:36 ` Zach Brown [this message]
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