From bb552ac6c6b4f24e7a7b491286f87b63f9478d42 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Thu, 19 May 2016 17:14:18 -0700 Subject: [PATCH] mm, page_alloc: un-inline the bad part of free_pages_check From: Vlastimil Babka !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 Signed-off-by: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 21 +++++++++++++-------- 1 file 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; }