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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2021-11-27 15:27:35 +0100 |
|---|---|---|
| committer | Petr Mladek <pmladek@suse.com> | 2021-12-06 13:35:28 +0100 |
| commit | 52e68cd60ddf11802f5135921aba77c0833909a8 (patch) | |
| tree | 36d219a085e818da7c1d30b8c65af2204d948359 /lib/vsprintf.c | |
| parent | Merge tag 'printk-for-5.16-fixup' of git://git.kernel.org/pub/scm/linux/kerne... (diff) | |
| download | linux-52e68cd60ddf11802f5135921aba77c0833909a8.tar.xz linux-52e68cd60ddf11802f5135921aba77c0833909a8.zip | |
vsprintf: Use non-atomic bitmap API when applicable
The 'set' bitmap is local to this function. No concurrent access to it is
possible.
So prefer the non-atomic '__[set|clear]_bit()' function to save a few
cycles.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/1abf81a5e509d372393bd22041eed4ebc07ef9f7.1638023178.git.christophe.jaillet@wanadoo.fr
Diffstat (limited to 'lib/vsprintf.c')
| -rw-r--r-- | lib/vsprintf.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index 58d5e567f836..53d6081f9e8b 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -3564,7 +3564,7 @@ int vsscanf(const char *buf, const char *fmt, va_list args) ++fmt; for ( ; *fmt && *fmt != ']'; ++fmt, ++len) - set_bit((u8)*fmt, set); + __set_bit((u8)*fmt, set); /* no ']' or no character set found */ if (!*fmt || !len) @@ -3574,7 +3574,7 @@ int vsscanf(const char *buf, const char *fmt, va_list args) if (negate) { bitmap_complement(set, set, 256); /* exclude null '\0' byte */ - clear_bit(0, set); + __clear_bit(0, set); } /* match must be non-empty */ |