The patch titled
Subject: find_bit-micro-optimise-find_next__bit-v2
has been added to the -mm tree. Its filename is
find_bit-micro-optimise-find_next__bit-v2.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/find_bit-micro-optimise-find_next__bit-v2.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/find_bit-micro-optimise-find_next__bit-v2.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
Subject: find_bit-micro-optimise-find_next__bit-v2
Link: http://lkml.kernel.org/r/1483709016-1834-1-git-send-email-mawilcox@xxxxxxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
Acked-by: Yury Norov <ynorov@xxxxxxxxxxxxxxxxxx>
Acked-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/find_bit.c | 2 +-
tools/lib/find_bit.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff -puN lib/find_bit.c~find_bit-micro-optimise-find_next__bit-v2 lib/find_bit.c
--- a/lib/find_bit.c~find_bit-micro-optimise-find_next__bit-v2
+++ a/lib/find_bit.c
@@ -151,7 +151,7 @@ static unsigned long _find_next_bit_le(c
{
unsigned long tmp;
- if (!nbits || start >= nbits)
+ if (unlikely(start >= nbits))
return nbits;
tmp = addr[start / BITS_PER_LONG] ^ invert;
diff -puN tools/lib/find_bit.c~find_bit-micro-optimise-find_next__bit-v2 tools/lib/find_bit.c
--- a/tools/lib/find_bit.c~find_bit-micro-optimise-find_next__bit-v2
+++ a/tools/lib/find_bit.c
@@ -34,7 +34,7 @@ static unsigned long _find_next_bit(cons
{
unsigned long tmp;
- if (!nbits || start >= nbits)
+ if (unlikely(start >= nbits))
return nbits;
tmp = addr[start / BITS_PER_LONG] ^ invert;
_
Patches currently in -mm which might be from mawilcox@xxxxxxxxxxxxx are
find_bit-micro-optimise-find_next__bit.patch
find_bit-micro-optimise-find_next__bit-v2.patch
reimplement-idr-and-ida-using-the-radix-tree-support-storing-null-in-the-idr.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
