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| author | Grygorii Strashko <grygorii.strashko@ti.com> | 2014-01-21 15:50:12 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-21 16:19:46 -0800 |
| commit | 79f40fab0b3a78e0e41fac79a65a9870f4b05652 (patch) | |
| tree | 279b0416e82fee4f65646304da075d4e7668540d | |
| parent | 869a84e1ca163b737236dae997db4a6a1e230b9b (diff) | |
| download | lwn-79f40fab0b3a78e0e41fac79a65a9870f4b05652.tar.gz lwn-79f40fab0b3a78e0e41fac79a65a9870f4b05652.zip | |
mm/memblock: drop WARN and use SMP_CACHE_BYTES as a default alignment
Don't produce warning and interpret 0 as "default align" equal to
SMP_CACHE_BYTES in case if caller of memblock_alloc_base_nid() doesn't
specify alignment for the block (align == 0).
This is done in preparation of introducing common memblock alloc interface
to make code behavior consistent. More details are in below thread :
https://lkml.org/lkml/2013/10/13/117.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/memblock.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/memblock.c b/mm/memblock.c index de4d9c352fd6..6aca54812db0 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -969,8 +969,8 @@ static phys_addr_t __init memblock_alloc_base_nid(phys_addr_t size, { phys_addr_t found; - if (WARN_ON(!align)) - align = __alignof__(long long); + if (!align) + align = SMP_CACHE_BYTES; /* align @size to avoid excessive fragmentation on reserved array */ size = round_up(size, align); |