diff options
| author | Frederic Weisbecker <frederic@kernel.org> | 2018-12-28 08:02:01 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-01-21 13:18:56 +0300 |
| commit | bba2a8f1f974a45ca6ceaf688b2be7bc1c418a2f (patch) | |
| tree | 9bcda273e51cdf6a4cab3e111bf9065722f4cacb /kernel/locking/lockdep_internals.h | |
| parent | 436a49ae7b693161c4fdf98b575ef16243dc2dfa (diff) | |
| download | linux-bba2a8f1f974a45ca6ceaf688b2be7bc1c418a2f.tar.xz | |
locking/lockdep: Provide enum lock_usage_bit mask names
It makes the code more self-explanatory and tells throughout the code
what magic number refers to:
- state (Hardirq/Softirq)
- direction (used in or enabled above state)
- read or write
We can even remove some comments that were compensating for the lack of
those constant names.
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/1545973321-24422-3-git-send-email-frederic@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/locking/lockdep_internals.h')
| -rw-r--r-- | kernel/locking/lockdep_internals.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/locking/lockdep_internals.h b/kernel/locking/lockdep_internals.h index 88c847a41c8a..2ebb9d0ea91c 100644 --- a/kernel/locking/lockdep_internals.h +++ b/kernel/locking/lockdep_internals.h @@ -22,6 +22,10 @@ enum lock_usage_bit { LOCK_USAGE_STATES }; +#define LOCK_USAGE_READ_MASK 1 +#define LOCK_USAGE_DIR_MASK 2 +#define LOCK_USAGE_STATE_MASK (~(LOCK_USAGE_READ_MASK | LOCK_USAGE_DIR_MASK)) + /* * Usage-state bitmasks: */ |