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| author | David S. Miller <davem@davemloft.net> | 2008-04-18 08:56:30 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-04-18 08:56:30 +0200 |
| commit | 1e42198609d73ed1a9adcba2af275c24c2678420 (patch) | |
| tree | 32fd4d9073bfc0f3909af8f9fb4bcff38951d01a /Documentation/spinlocks.txt | |
| parent | [NETLABEL]: Fix NULL deref in netlbl_unlabel_staticlist_gen() if ifindex not ... (diff) | |
| parent | Linux 2.6.25 (diff) | |
| download | linux-1e42198609d73ed1a9adcba2af275c24c2678420.tar.xz linux-1e42198609d73ed1a9adcba2af275c24c2678420.zip | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'Documentation/spinlocks.txt')
| -rw-r--r-- | Documentation/spinlocks.txt | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/Documentation/spinlocks.txt b/Documentation/spinlocks.txt index 471e75389778..619699dde593 100644 --- a/Documentation/spinlocks.txt +++ b/Documentation/spinlocks.txt @@ -5,6 +5,28 @@ Please use DEFINE_SPINLOCK()/DEFINE_RWLOCK() or __SPIN_LOCK_UNLOCKED()/__RW_LOCK_UNLOCKED() as appropriate for static initialization. +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. + Dynamic initialization, when necessary, may be performed as demonstrated below. |