From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>,
Andrew Morton <akpm@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
Roland McGrath <roland@redhat.com>,
Nick Piggin <nickpiggin@yahoo.com.au>,
Steven Rostedt <srostedt@redhat.com>
Subject: [PATCH 5/5] mm: remove unlikelys for unlock in rmap.c
Date: Wed, 25 Mar 2009 01:19:25 -0400 [thread overview]
Message-ID: <20090325052023.994667072@goodmis.org> (raw)
In-Reply-To: 20090325051920.406564281@goodmis.org
[-- Attachment #1: 0005-mm-remove-unlikelys-for-unlock-in-rmap.c.patch --]
[-- Type: text/plain, Size: 2157 bytes --]
From: Steven Rostedt <rostedt@goodmis.org>
Impact: clean up
The annotated branch profiler shows that the rmap calls are likely
called with unlock set.
correct incorrect % Function File Line
------- --------- - -------- ---- ----
0 46100 100 try_to_unmap_anon rmap.c 1013
0 46100 100 try_to_unmap_anon rmap.c 1005
0 5763 100 try_to_unmap_file rmap.c 1074
0 5763 100 try_to_unmap_file rmap.c 1069
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
mm/rmap.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/mm/rmap.c b/mm/rmap.c
index 1652166..ad62fe0 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1002,7 +1002,7 @@ static int try_to_unmap_anon(struct page *page, int unlock, int migration)
unsigned int mlocked = 0;
int ret = SWAP_AGAIN;
- if (MLOCK_PAGES && unlikely(unlock))
+ if (MLOCK_PAGES && unlock)
ret = SWAP_SUCCESS; /* default for try_to_munlock() */
anon_vma = page_lock_anon_vma(page);
@@ -1010,7 +1010,7 @@ static int try_to_unmap_anon(struct page *page, int unlock, int migration)
return ret;
list_for_each_entry(vma, &anon_vma->head, anon_vma_node) {
- if (MLOCK_PAGES && unlikely(unlock)) {
+ if (MLOCK_PAGES && unlock) {
if (!((vma->vm_flags & VM_LOCKED) &&
page_mapped_in_vma(page, vma)))
continue; /* must visit all unlocked vmas */
@@ -1066,12 +1066,12 @@ static int try_to_unmap_file(struct page *page, int unlock, int migration)
unsigned int mapcount;
unsigned int mlocked = 0;
- if (MLOCK_PAGES && unlikely(unlock))
+ if (MLOCK_PAGES && unlock)
ret = SWAP_SUCCESS; /* default for try_to_munlock() */
spin_lock(&mapping->i_mmap_lock);
vma_prio_tree_foreach(vma, &iter, &mapping->i_mmap, pgoff, pgoff) {
- if (MLOCK_PAGES && unlikely(unlock)) {
+ if (MLOCK_PAGES && unlock) {
if (!((vma->vm_flags & VM_LOCKED) &&
page_mapped_in_vma(page, vma)))
continue; /* must visit all vmas */
--
1.6.2
--
next prev parent reply other threads:[~2009-03-25 5:22 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-25 5:19 [PATCH 0/5] [PATCH][GIT PULL] remove unnecessary (un)likelys Steven Rostedt
2009-03-25 5:19 ` [PATCH 1/5] ptrace: remove incorrect unlikelys Steven Rostedt
2009-03-25 7:21 ` Ingo Molnar
2009-03-25 13:31 ` Christian Borntraeger
2009-03-25 13:42 ` Steven Rostedt
2009-03-25 9:28 ` Roland McGrath
2009-03-25 5:19 ` [PATCH 2/5] mm: remove unlikly NULL from kfree Steven Rostedt
2009-03-25 7:34 ` Pekka Enberg
2009-03-25 7:50 ` Thomas Gleixner
2009-03-25 8:01 ` Pekka Enberg
2009-03-25 21:20 ` Andrew Morton
2009-03-25 8:02 ` Hua Zhong
2009-03-25 8:06 ` Pekka Enberg
2009-03-25 13:51 ` Pekka Enberg
2009-03-25 14:47 ` Steven Rostedt
2009-03-25 14:59 ` Pekka Enberg
2009-03-25 15:04 ` Steven Rostedt
2009-03-25 15:08 ` Steven Rostedt
2009-03-25 16:14 ` Matt Mackall
2009-03-25 16:34 ` Steven Rostedt
2009-03-25 20:26 ` Jeremy Fitzhardinge
2009-03-25 21:09 ` Matt Mackall
2009-03-25 21:01 ` Matt Mackall
2009-03-25 21:24 ` Steven Rostedt
2009-03-25 15:27 ` Steven Rostedt
2009-03-26 16:10 ` Al Viro
2009-03-26 16:15 ` Andrew Morton
2009-03-25 5:19 ` [PATCH 3/5] sched: remove unlikely in pre_schedule_rt Steven Rostedt
2009-03-25 5:24 ` Steven Rostedt
2009-03-25 5:19 ` [PATCH 4/5] sched: remove unlikelys from sched_move_task Steven Rostedt
2009-03-25 5:19 ` Steven Rostedt [this message]
2009-04-24 11:12 ` [PATCH 5/5] mm: remove unlikelys for unlock in rmap.c KOSAKI Motohiro
2009-04-24 12:15 ` Lee Schermerhorn
2009-03-25 7:19 ` [PATCH 0/5] [PATCH][GIT PULL] remove unnecessary (un)likelys Ingo Molnar
2009-03-25 7:25 ` Ingo Molnar
2009-03-25 13:43 ` Steven Rostedt
2009-04-27 16:30 ` Daniel Walker
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