diff options
| author | Joe Perches <joe@perches.com> | 2011-10-31 17:08:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-31 17:30:48 -0700 |
| commit | 3ee9a4f086716d792219c021e8509f91165a4128 (patch) | |
| tree | f85162b8e024624f07909eaba4e85b89df924ebb /mm/page_alloc.c | |
| parent | 06d5e032adcbc7d50c606a1396f00e2474e4213e (diff) | |
| download | lwn-3ee9a4f086716d792219c021e8509f91165a4128.tar.gz lwn-3ee9a4f086716d792219c021e8509f91165a4128.zip | |
mm: neaten warn_alloc_failed
Add __attribute__((format (printf...) to the function to validate format
and arguments. Use vsprintf extension %pV to avoid any possible message
interleaving. Coalesce format string. Convert printks/pr_warning to
pr_warn.
[akpm@linux-foundation.org: use the __printf() macro]
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 83a02052bce4..9dd443d89d8b 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1754,7 +1754,6 @@ static DEFINE_RATELIMIT_STATE(nopage_rs, void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...) { - va_list args; unsigned int filter = SHOW_MEM_FILTER_NODES; if ((gfp_mask & __GFP_NOWARN) || !__ratelimit(&nopage_rs)) @@ -1773,14 +1772,21 @@ void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...) filter &= ~SHOW_MEM_FILTER_NODES; if (fmt) { - printk(KERN_WARNING); + struct va_format vaf; + va_list args; + va_start(args, fmt); - vprintk(fmt, args); + + vaf.fmt = fmt; + vaf.va = &args; + + pr_warn("%pV", &vaf); + va_end(args); } - pr_warning("%s: page allocation failure: order:%d, mode:0x%x\n", - current->comm, order, gfp_mask); + pr_warn("%s: page allocation failure: order:%d, mode:0x%x\n", + current->comm, order, gfp_mask); dump_stack(); if (!should_suppress_show_mem()) |