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| author | Grant Grundler <grundler@parisc-linux.org> | 2007-10-16 23:29:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-17 08:42:56 -0700 |
| commit | 1a2142b08cbc2172e96cf8acced4ebba68aad05d (patch) | |
| tree | ddd5159ebeaa3bae2a1198435562a0d3682321ee /Documentation | |
| parent | 74beb9db77930be476b267ec8518a642f39a04bf (diff) | |
| download | lwn-1a2142b08cbc2172e96cf8acced4ebba68aad05d.tar.gz lwn-1a2142b08cbc2172e96cf8acced4ebba68aad05d.zip | |
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')
| -rw-r--r-- | Documentation/atomic_ops.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/atomic_ops.txt b/Documentation/atomic_ops.txt index 05851e9982ed..938f99957052 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. |