diff options
| author | Mel Gorman <mgorman@techsingularity.net> | 2016-05-20 02:14:18 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-20 04:12:14 +0200 |
| commit | bb552ac6c6b4f24e7a7b491286f87b63f9478d42 (patch) | |
| tree | a261455af75121deaeed4c134cfb2498e05175f2 /mm/page_alloc.c | |
| parent | mm, page_alloc: check multiple page fields with a single branch (diff) | |
| download | linux-bb552ac6c6b4f24e7a7b491286f87b63f9478d42.tar.xz linux-bb552ac6c6b4f24e7a7b491286f87b63f9478d42.zip | |
mm, page_alloc: un-inline the bad part of free_pages_check
From: Vlastimil Babka <vbabka@suse.cz>
!DEBUG_VM size and bloat-o-meter:
add/remove: 1/0 grow/shrink: 0/2 up/down: 124/-370 (-246)
function old new delta
free_pages_check_bad - 124 +124
free_pcppages_bulk 1288 1171 -117
__free_pages_ok 948 695 -253
DEBUG_VM:
add/remove: 1/0 grow/shrink: 0/1 up/down: 124/-214 (-90)
function old new delta
free_pages_check_bad - 124 +124
free_pages_prepare 1112 898 -214
[akpm@linux-foundation.org: fix whitespace]
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | mm/page_alloc.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 76a394812776..d51543de1813 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -806,18 +806,11 @@ static inline bool page_expected_state(struct page *page, return true; } -static inline int free_pages_check(struct page *page) +static void free_pages_check_bad(struct page *page) { const char *bad_reason; unsigned long bad_flags; - if (page_expected_state(page, PAGE_FLAGS_CHECK_AT_FREE)) { - page_cpupid_reset_last(page); - page->flags &= ~PAGE_FLAGS_CHECK_AT_PREP; - return 0; - } - - /* Something has gone sideways, find it */ bad_reason = NULL; bad_flags = 0; @@ -836,6 +829,18 @@ static inline int free_pages_check(struct page *page) bad_reason = "page still charged to cgroup"; #endif bad_page(page, bad_reason, bad_flags); +} + +static inline int free_pages_check(struct page *page) +{ + if (likely(page_expected_state(page, PAGE_FLAGS_CHECK_AT_FREE))) { + page_cpupid_reset_last(page); + page->flags &= ~PAGE_FLAGS_CHECK_AT_PREP; + return 0; + } + + /* Something has gone sideways, find it */ + free_pages_check_bad(page); return 1; } |