Home Explore Help
Sign In
GfA
/
linux_kernel
5
0
Fork 0
Files Issues 0 Pull Requests 0 Wiki
Browse Source

mm, page_alloc: simplify last cpupid reset

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>
Mel Gorman 9 years ago
parent
5bb1b16975
commit
09940a4f1e
1 changed files with 1 additions and 4 deletions
Unified View Show Diff Stats
  1. 1 4
      include/linux/mm.h

+ 1 - 4
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)
 
 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 */
 
 #endif /* LAST_CPUPID_NOT_IN_PAGE_FLAGS */
 
 #else /* !CONFIG_NUMA_BALANCING */
 
 #else /* !CONFIG_NUMA_BALANCING */