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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2018-02-07 02:39:37 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-07 05:32:45 +0300 |
| commit | 4de373a12f3c551f9263f37d609f264b440adfec (patch) | |
| tree | b7d06e3340b02a1aa204f7fdae8a08e403265d28 /include/linux/cpumask.h | |
| parent | 667b60946ef9b8375085c7b225229923c6f87308 (diff) | |
| download | linux-4de373a12f3c551f9263f37d609f264b440adfec.tar.xz | |
cpumask: make cpumask_size() return "unsigned int"
CPUmasks are never big enough to warrant 64-bit code.
Space savings:
add/remove: 0/0 grow/shrink: 1/4 up/down: 3/-17 (-14)
Function old new delta
sched_init_numa 1530 1533 +3
compat_sys_sched_setaffinity 160 159 -1
sys_sched_getaffinity 197 195 -2
sys_sched_setaffinity 183 176 -7
compat_sys_sched_getaffinity 179 172 -7
Link: http://lkml.kernel.org/r/20171204165531.GA8221@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/cpumask.h')
| -rw-r--r-- | include/linux/cpumask.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index 75b565194437..d4a2a7dcd72d 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -640,7 +640,7 @@ static inline int cpulist_parse(const char *buf, struct cpumask *dstp) /** * cpumask_size - size to allocate for a 'struct cpumask' in bytes */ -static inline size_t cpumask_size(void) +static inline unsigned int cpumask_size(void) { return BITS_TO_LONGS(nr_cpumask_bits) * sizeof(long); } |