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| author |   Yury Norov <yury.norov@gmail.com> | 2020-02-03 17:37:41 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-02-04 03:05:27 +0000 |
| commit | 190535f7cf50f2d6d6e603715201c58cd6ec696b (patch) | |
| tree | a8179d0e8a0e926a0541ebac0bb5d57f9925e565 /include | |
| parent | lib: new testcases for bitmap_parse{_user} (diff) | |
| download | linux-dev-190535f7cf50f2d6d6e603715201c58cd6ec696b.tar.xz linux-dev-190535f7cf50f2d6d6e603715201c58cd6ec696b.zip | |
include/linux/cpumask.h: don't calculate length of the input string
New design of inner bitmap_parse() allows to avoid calculating the size of
a null-terminated string.
Link: http://lkml.kernel.org/r/20200102043031.30357-8-yury.norov@gmail.com
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Amritha Nambiar <amritha.nambiar@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Kees Cook <keescook@chromium.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miklos Szeredi <mszeredi@redhat.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: "Tobin C . Harding" <tobin@kernel.org>
Cc: Vineet Gupta <vineet.gupta1@synopsys.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cpumask.h | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index 78a73eba64dd..d5cc88514aee 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -663,9 +663,7 @@ static inline int cpumask_parselist_user(const char __user *buf, int len, */ static inline int cpumask_parse(const char *buf, struct cpumask *dstp) { - unsigned int len = strchrnul(buf, '\n') - buf; - - return bitmap_parse(buf, len, cpumask_bits(dstp), nr_cpumask_bits); + return bitmap_parse(buf, UINT_MAX, cpumask_bits(dstp), nr_cpumask_bits); } /** |