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From: Jia He <hejianet@gmail.com>
To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Rasmus Villemoes <linux@rasmusvillemoes.dk>,
	Denys Vlasenko <dvlasenk@redhat.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Michal Nazarewicz <mina86@mina86.com>,
	Yury Norov <yury.norov@gmail.com>, Tejun Heo <tj@kernel.org>,
	Martin Kepplinger <martink@posteo.de>,
	George Spelvin <linux@horizon.com>,
	Ingo Molnar <mingo@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
	Jia He <hejianet@gmail.com>
Subject: [PATCH 0/3] Improve bitmap_empty and bitmap_full
Date: Thu, 19 Nov 2015 10:31:51 +0800	[thread overview]
Message-ID: <1447900314-5727-1-git-send-email-hejianet@gmail.com> (raw)

find_fisrt_{zero_}bit are too heavy for bitmap_{full,empty}. We don't 
need to calculate and compare the position of bitmap. This set of patch
instroduces lightweight api and replaces the heavy one.

Jia He (3):
  linux/bitmap: Move 2 mask macro from bitmap.h to bitops.h
  lib: Introduce 2 find bit api: all_is_bit_{one,zero}
  linux/bitmap: Replace find_fisrt_{zero_}bit with the new lightweight api 

 include/asm-generic/bitops/find.h |  3 +++
 include/linux/bitmap.h            |  7 ++----
 include/linux/bitops.h            |  4 ++++
 lib/find_bit.c                    | 50 +++++++++++++++++++++++++++++++++++++++
 4 files changed, 59 insertions(+), 5 deletions(-)

-- 
2.5.0


             reply	other threads:[~2015-11-19  2:32 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-19  2:31 Jia He [this message]
2015-11-19  2:31 ` [PATCH 1/3] linux/bitmap: Move 2 mask macro to bitops.h Jia He
2015-11-22 19:17   ` Andy Shevchenko
2015-11-19  2:31 ` [PATCH 2/3] lib: Introduce 2 find bit api: all_is_bit_{one,zero} Jia He
2015-11-20  8:52   ` Geert Uytterhoeven
2015-11-20 13:57   ` Michal Nazarewicz
2015-11-19  2:31 ` [PATCH 3/3] linux/bitmap: Replace find_fisrt_{zero_}bit with the new lightweight api Jia He
2015-11-19  2:53   ` kbuild test robot
2015-11-19  3:24     ` hejianet

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