redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

mm/page_alloc.c: remove duplicate call to trace_mm_page_free_direct 

trace_mm_page_free_direct() is called in function __free_pages().  But it
is called again in free_hot_page() if order == 0 and produce duplicate
records in trace file for mm_page_free_direct event.  As below:

K-PID    CPU#    TIMESTAMP  FUNCTION
  gnome-terminal-1567  [000]  4415.246466: mm_page_free_direct: page=ffffea0003db9f40 pfn=1155800 order=0
  gnome-terminal-1567  [000]  4415.246468: mm_page_free_direct: page=ffffea0003db9f40 pfn=1155800 order=0
  gnome-terminal-1567  [000]  4415.246506: mm_page_alloc: page=ffffea0003db9f40 pfn=1155800 order=0 migratetype=0 gfp_flags=GFP_KERNEL
  gnome-terminal-1567  [000]  4415.255557: mm_page_free_direct: page=ffffea0003db9f40 pfn=1155800 order=0
  gnome-terminal-1567  [000]  4415.255557: mm_page_free_direct: page=ffffea0003db9f40 pfn=1155800 order=0

This patch removes the first call and adds a call to
trace_mm_page_free_direct() in __free_pages_ok().

Signed-off-by: Li Hong <lihong.hi@gmail.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Rik van Riel <riel@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Larry Woodman <lwoodman@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Li Ming Chun <macli@brc.ubc.ca>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Li Hong 2010-03-05 13:41:52 -08:00 committed by Linus Torvalds
parent 76ca542d88
commit f650316c8b
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
mm/page_alloc.c
View File

@ -583,6 +583,7 @@ static void __free_pages_ok(struct page *page, unsigned int order)
int bad = 0;
int wasMlocked = __TestClearPageMlocked(page);
trace_mm_page_free_direct(page, order);
kmemcheck_free_shadow(page, order);
for (i = 0 ; i < (1 << order) ; ++i)
@ -2008,7 +2009,6 @@ void __pagevec_free(struct pagevec *pvec)
void __free_pages(struct page *page, unsigned int order)
{
if (put_page_testzero(page)) {
trace_mm_page_free_direct(page, order);
if (order == 0)
free_hot_page(page);
else