From: Marcelo Jimenez <mroberto@cpti.cetuc.puc-rio.br>
To: linux-arm-kernel@lists.infradead.org,
Andrew Morton <akpm@linux-foundation.org>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Christoph Lameter <cl@linux-foundation.org>,
Mel Gorman <mel@csn.ul.ie>, Minchan Kim <minchan.kim@gmail.com>,
"H. Peter Anvin" <hpa@zytor.com>, Yinghai Lu <yinghai@kernel.org>,
Stephen Rothwell <sfr@canb.auug.org.au>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Suspicious compilation warning
Date: Mon, 19 Apr 2010 20:27:43 -0300 [thread overview]
Message-ID: <k2ncecb6d8f1004191627w3cd36450xf797f746460abb09@mail.gmail.com> (raw)
Hi,
I get this warning while compiling for ARM/SA1100:
mm/sparse.c: In function '__section_nr':
mm/sparse.c:135: warning: 'root' is used uninitialized in this function
With a small patch in fs/proc/meminfo.c, I find that NR_SECTION_ROOTS
is zero, which certainly explains the warning.
# cat /proc/meminfo
NR_SECTION_ROOTS=0
NR_MEM_SECTIONS=32
SECTIONS_PER_ROOT=512
SECTIONS_SHIFT=5
MAX_PHYSMEM_BITS=32
SECTION_SIZE_BITS=27
MemTotal: 28848 kB
MemFree: 15516 kB
Buffers: 112 kB
Cached: 2312 kB
SwapCached: 0 kB
Active: 984 kB
Inactive: 1628 kB
Active(anon): 188 kB
Inactive(anon): 0 kB
Active(file): 796 kB
Inactive(file): 1628 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 24 kB
Writeback: 0 kB
AnonPages: 208 kB
Mapped: 292 kB
Shmem: 0 kB
Slab: 1472 kB
SReclaimable: 744 kB
SUnreclaim: 728 kB
KernelStack: 200 kB
PageTables: 32 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 14424 kB
Committed_AS: 772 kB
VmallocTotal: 614400 kB
VmallocUsed: 33316 kB
VmallocChunk: 573436 kB
Regards,
Marcelo.
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next reply other threads:[~2010-04-19 23:26 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-19 23:27 Marcelo Jimenez [this message]
2010-04-20 22:51 ` Suspicious compilation warning Andrew Morton
2010-04-20 23:07 ` Russell King - ARM Linux
2010-05-04 17:35 ` Marcelo Jimenez
2010-05-04 17:45 ` Russell King - ARM Linux
2010-05-04 18:16 ` Marcelo Jimenez
2010-05-05 10:06 ` Sergei Shtylyov
2010-05-06 1:24 ` Kyungmin Park
2010-05-06 13:24 ` Marcelo Jimenez
2010-05-10 15:40 ` Mel Gorman
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