diff options
author | Grant Likely <grant.likely@secretlab.ca> | 2011-03-17 13:46:58 -0600 |
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committer | Grant Likely <grant.likely@secretlab.ca> | 2011-03-17 13:48:06 -0600 |
commit | 2dd22997679a88874c131f6e6ffb963e6d43b3a6 (patch) | |
tree | bfe1707dda7e755b8b550c6796e2649813bcfbb9 /Documentation/spinlocks.txt | |
parent | 36885ff0e6563687e6152da6d311abbf83c0198f (diff) | |
parent | 7b7adc4a016a1decb806eb71ecab98721fa7f146 (diff) |
Merge remote-tracking branch 'origin' into spi/next
Pull in Linus' tree to pick up changes required for the langwell gpio fixes
Diffstat (limited to 'Documentation/spinlocks.txt')
-rw-r--r-- | Documentation/spinlocks.txt | 24 |
1 files changed, 1 insertions, 23 deletions
diff --git a/Documentation/spinlocks.txt b/Documentation/spinlocks.txt index 178c831b907..2e3c64b1a6a 100644 --- a/Documentation/spinlocks.txt +++ b/Documentation/spinlocks.txt @@ -86,7 +86,7 @@ to change the variables it has to get an exclusive write lock. The routines look the same as above: - rwlock_t xxx_lock = RW_LOCK_UNLOCKED; + rwlock_t xxx_lock = __RW_LOCK_UNLOCKED(xxx_lock); unsigned long flags; @@ -196,25 +196,3 @@ appropriate: For static initialization, use DEFINE_SPINLOCK() / DEFINE_RWLOCK() or __SPIN_LOCK_UNLOCKED() / __RW_LOCK_UNLOCKED() as appropriate. - -SPIN_LOCK_UNLOCKED and RW_LOCK_UNLOCKED are deprecated. These interfere -with lockdep state tracking. - -Most of the time, you can simply turn: - static spinlock_t xxx_lock = SPIN_LOCK_UNLOCKED; -into: - static DEFINE_SPINLOCK(xxx_lock); - -Static structure member variables go from: - - struct foo bar { - .lock = SPIN_LOCK_UNLOCKED; - }; - -to: - - struct foo bar { - .lock = __SPIN_LOCK_UNLOCKED(bar.lock); - }; - -Declaration of static rw_locks undergo a similar transformation. |