mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-31 16:38:12 +00:00
Code Issues Releases Wiki Activity

mm, page_alloc: simplify last cpupid reset

Browse source 
The current reset unnecessarily clears flags and makes pointless
calculations.

Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mel Gorman 2016-05-19 17:13:53 -07:00 committed by Linus Torvalds
parent 5bb1b16975
commit 09940a4f1e
1 changed files with 1 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
include/linux/mm.h
View file

@ -850,10 +850,7 @@ extern int page_cpupid_xchg_last(struct page *page, int cpupid);
static inline void page_cpupid_reset_last(struct page *page)
{
int cpupid = (1 << LAST_CPUPID_SHIFT) - 1;
page->flags &= ~(LAST_CPUPID_MASK << LAST_CPUPID_PGSHIFT);
page->flags |= (cpupid & LAST_CPUPID_MASK) << LAST_CPUPID_PGSHIFT;
page->flags |= LAST_CPUPID_MASK << LAST_CPUPID_PGSHIFT;
}
#endif /* LAST_CPUPID_NOT_IN_PAGE_FLAGS */
#else /* !CONFIG_NUMA_BALANCING */