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| author | Frederic Weisbecker <frederic@kernel.org> | 2019-04-02 18:02:42 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-04-18 12:50:17 +0200 |
| commit | c902a1e8d9c9b47cd8faa16892710247cdda9b02 (patch) | |
| tree | 4f311685760545aaecb459d25fa14781d98c3777 /kernel/locking | |
| parent | 0d2cc3b3453254f1c56f9456ba03e092ed4cfb72 (diff) | |
| download | linux-stable-c902a1e8d9c9b47cd8faa16892710247cdda9b02.tar.gz linux-stable-c902a1e8d9c9b47cd8faa16892710247cdda9b02.tar.bz2 linux-stable-c902a1e8d9c9b47cd8faa16892710247cdda9b02.zip | |
locking/lockdep: Map remaining magic numbers to lock usage mask names
Clarify the code with mapping some more constant numbers that haven't
been named after their corresponding LOCK_USAGE_* symbol.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
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: Will Deacon <will.deacon@arm.com>
Link: https://lkml.kernel.org/r/20190402160244.32434-3-frederic@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/locking')
| -rw-r--r-- | kernel/locking/lockdep.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 9c5819ef4a28..2288aa2fa4c6 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -516,11 +516,11 @@ static char get_usage_char(struct lock_class *class, enum lock_usage_bit bit) { char c = '.'; - if (class->usage_mask & lock_flag(bit + 2)) + if (class->usage_mask & lock_flag(bit + LOCK_USAGE_DIR_MASK)) c = '+'; if (class->usage_mask & lock_flag(bit)) { c = '-'; - if (class->usage_mask & lock_flag(bit + 2)) + if (class->usage_mask & lock_flag(bit + LOCK_USAGE_DIR_MASK)) c = '?'; } @@ -1971,7 +1971,10 @@ static const char *state_rnames[] = { static inline const char *state_name(enum lock_usage_bit bit) { - return (bit & LOCK_USAGE_READ_MASK) ? state_rnames[bit >> 2] : state_names[bit >> 2]; + if (bit & LOCK_USAGE_READ_MASK) + return state_rnames[bit >> LOCK_USAGE_DIR_MASK]; + else + return state_names[bit >> LOCK_USAGE_DIR_MASK]; } static int exclusive_bit(int new_bit) @@ -3017,7 +3020,7 @@ static int (*state_verbose_f[])(struct lock_class *class) = { static inline int state_verbose(enum lock_usage_bit bit, struct lock_class *class) { - return state_verbose_f[bit >> 2](class); + return state_verbose_f[bit >> LOCK_USAGE_DIR_MASK](class); } typedef int (*check_usage_f)(struct task_struct *, struct held_lock *, |