diff options
| author |   Peter Zijlstra <peterz@infradead.org> | 2015-07-24 14:55:40 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2015-08-03 11:34:13 +0200 |
| commit | a1efb01feca597b2abbc89873b40ef8ec6690168 (patch) | |
| tree | af073fc563ab4bcd383999c1adc2313b1a62da48 /include/linux/jump_label.h | |
| parent | jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP} (diff) | |
| download | linux-dev-a1efb01feca597b2abbc89873b40ef8ec6690168.tar.xz linux-dev-a1efb01feca597b2abbc89873b40ef8ec6690168.zip | |
jump_label, locking/static_keys: Rename JUMP_LABEL_TYPE_* and related helpers to the static_key* pattern
Rename the JUMP_LABEL_TYPE_* macros to be JUMP_TYPE_* and move the
inline helpers into kernel/jump_label.c, since that's the only place
they're ever used.
Also rename the helpers where it's all about static keys.
This is the second step in removing the naming confusion that has led to
a stream of avoidable bugs such as:
a833581e372a ("x86, perf: Fix static_key bug in load_mm_cr4()")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/jump_label.h')
| -rw-r--r-- | include/linux/jump_label.h | 25 |
1 files changed, 5 insertions, 20 deletions
diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h index 6a8b4fe10ad8..0ddb208b8449 100644 --- a/include/linux/jump_label.h +++ b/include/linux/jump_label.h @@ -101,24 +101,9 @@ static inline int static_key_count(struct static_key *key) #ifdef HAVE_JUMP_LABEL -#define JUMP_LABEL_TYPE_FALSE_BRANCH 0UL -#define JUMP_LABEL_TYPE_TRUE_BRANCH 1UL -#define JUMP_LABEL_TYPE_MASK 1UL - -static -inline struct jump_entry *jump_label_get_entries(struct static_key *key) -{ - return (struct jump_entry *)((unsigned long)key->entries - & ~JUMP_LABEL_TYPE_MASK); -} - -static inline bool jump_label_get_branch_default(struct static_key *key) -{ - if (((unsigned long)key->entries & JUMP_LABEL_TYPE_MASK) == - JUMP_LABEL_TYPE_TRUE_BRANCH) - return true; - return false; -} +#define JUMP_TYPE_FALSE 0UL +#define JUMP_TYPE_TRUE 1UL +#define JUMP_TYPE_MASK 1UL static __always_inline bool static_key_false(struct static_key *key) { @@ -147,10 +132,10 @@ extern void jump_label_apply_nops(struct module *mod); #define STATIC_KEY_INIT_TRUE ((struct static_key) \ { .enabled = ATOMIC_INIT(1), \ - .entries = (void *)JUMP_LABEL_TYPE_TRUE_BRANCH }) + .entries = (void *)JUMP_TYPE_TRUE }) #define STATIC_KEY_INIT_FALSE ((struct static_key) \ { .enabled = ATOMIC_INIT(0), \ - .entries = (void *)JUMP_LABEL_TYPE_FALSE_BRANCH }) + .entries = (void *)JUMP_TYPE_FALSE }) #else /* !HAVE_JUMP_LABEL */ |