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Groups > linux.kernel > #1272882
| From | Jia He <hejianet@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 0/3] Improve bitmap_empty and bitmap_full |
| Date | 2015-11-19 07:50 +0100 |
| Message-ID | <qwrcB-5Lq-3@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
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.
v2: Move the declarations to linux/bitops.h for compilation
Jia He (3):
Move 2 mask macro from bitmap.h to bitops.h
Introduce 2 bit ops api: all_is_bit_{one,zero}
Replace find_fisrt_{zero_}bit with the new lightweight api
include/linux/bitmap.h | 7 ++-----
include/linux/bitops.h | 7 +++++++
lib/find_bit.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 59 insertions(+), 5 deletions(-)
--
2.5.0
--
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[PATCH v2 0/3] Improve bitmap_empty and bitmap_full Jia He <hejianet@gmail.com> - 2015-11-19 07:50 +0100
[PATCH v2 2/3] lib: Introduce 2 bit ops api: all_is_bit_{one,zero} Jia He <hejianet@gmail.com> - 2015-11-19 07:50 +0100
Re: [PATCH v2 2/3] lib: Introduce 2 bit ops api: all_is_bit_{one,zero} xinhui <xinhui@linux.vnet.ibm.com> - 2015-11-19 09:50 +0100
Re: [PATCH v2 2/3] lib: Introduce 2 bit ops api: all_is_bit_{one,zero} hejianet <hejianet@gmail.com> - 2015-11-19 10:00 +0100
Re: [PATCH v2 2/3] lib: Introduce 2 bit ops api: all_is_bit_{one,zero} yalin wang <yalin.wang2010@gmail.com> - 2015-11-19 10:00 +0100
Re: [PATCH v2 0/3] Improve bitmap_empty and bitmap_full Rasmus Villemoes <linux@rasmusvillemoes.dk> - 2015-11-19 10:10 +0100
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