path: root/Documentation/atomic_ops.txt
diff options
authorGrant Grundler <grundler@parisc-linux.org>2007-10-17 06:29:28 (GMT)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-17 15:42:56 (GMT)
commit1a2142b08cbc2172e96cf8acced4ebba68aad05d (patch)
treeddd5159ebeaa3bae2a1198435562a0d3682321ee /Documentation/atomic_ops.txt
parent74beb9db77930be476b267ec8518a642f39a04bf (diff)
atomic_ops.txt: mention local_t
local_t is a variant of atomic_t and has related ops to match. Add reference for local_t documentation to atomic_ops.txt. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/atomic_ops.txt')
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/atomic_ops.txt b/Documentation/atomic_ops.txt
index 05851e9..938f999 100644
--- a/Documentation/atomic_ops.txt
+++ b/Documentation/atomic_ops.txt
@@ -14,6 +14,10 @@ suffice:
typedef struct { volatile int counter; } atomic_t;
+local_t is very similar to atomic_t. If the counter is per CPU and only
+updated by one CPU, local_t is probably more appropriate. Please see
+Documentation/local_ops.txt for the semantics of local_t.
The first operations to implement for atomic_t's are the
initializers and plain reads.

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