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authorAlexey Dobriyan <adobriyan@gmail.com>2018-02-06 15:39:37 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-02-06 18:32:45 -0800
commit4de373a12f3c551f9263f37d609f264b440adfec (patch)
treeb7d06e3340b02a1aa204f7fdae8a08e403265d28 /kernel
parent667b60946ef9b8375085c7b225229923c6f87308 (diff)
downloadlinux-4de373a12f3c551f9263f37d609f264b440adfec.tar.bz2
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 'kernel')
-rw-r--r--kernel/compat.c2
-rw-r--r--kernel/sched/core.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/kernel/compat.c b/kernel/compat.c
index d1cee656a7ed..3247fe761f60 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -355,7 +355,7 @@ COMPAT_SYSCALL_DEFINE3(sched_getaffinity, compat_pid_t, pid, unsigned int, len,
ret = sched_getaffinity(pid, mask);
if (ret == 0) {
- size_t retlen = min_t(size_t, len, cpumask_size());
+ unsigned int retlen = min(len, cpumask_size());
if (compat_put_bitmap(user_mask_ptr, cpumask_bits(mask), retlen * 8))
ret = -EFAULT;
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 3da7a2444a91..d99fb5bf61ec 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4853,7 +4853,7 @@ SYSCALL_DEFINE3(sched_getaffinity, pid_t, pid, unsigned int, len,
ret = sched_getaffinity(pid, mask);
if (ret == 0) {
- size_t retlen = min_t(size_t, len, cpumask_size());
+ unsigned int retlen = min(len, cpumask_size());
if (copy_to_user(user_mask_ptr, mask, retlen))
ret = -EFAULT;