diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2007-10-16 23:25:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-17 08:42:44 -0700 |
| commit | 252e0ba6b77dcfae448fa2fbaf796e8a83839e75 (patch) | |
| tree | f21bcd6994b65ba947b41ae7d2519a960185a029 /include/linux/percpu_counter.h | |
| parent | 3cb4f9fa0c5f3ded9f70f85b70ee6d429834f911 (diff) | |
| download | linux-252e0ba6b77dcfae448fa2fbaf796e8a83839e75.tar.gz linux-252e0ba6b77dcfae448fa2fbaf796e8a83839e75.tar.bz2 linux-252e0ba6b77dcfae448fa2fbaf796e8a83839e75.zip | |
lib: percpu_counter variable batch
Because the current batch setup has an quadric error bound on the counter,
allow for an alternative setup.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/percpu_counter.h')
| -rw-r--r-- | include/linux/percpu_counter.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/include/linux/percpu_counter.h b/include/linux/percpu_counter.h index 438a170187ec..40df86f7a3b4 100644 --- a/include/linux/percpu_counter.h +++ b/include/linux/percpu_counter.h @@ -32,9 +32,14 @@ struct percpu_counter { void percpu_counter_init(struct percpu_counter *fbc, s64 amount); void percpu_counter_destroy(struct percpu_counter *fbc); -void percpu_counter_add(struct percpu_counter *fbc, s32 amount); +void __percpu_counter_add(struct percpu_counter *fbc, s32 amount, s32 batch); s64 percpu_counter_sum(struct percpu_counter *fbc); +static inline void percpu_counter_add(struct percpu_counter *fbc, s32 amount) +{ + __percpu_counter_add(fbc, amount, FBC_BATCH); +} + static inline s64 percpu_counter_read(struct percpu_counter *fbc) { return fbc->count; @@ -70,6 +75,9 @@ static inline void percpu_counter_destroy(struct percpu_counter *fbc) { } +#define __percpu_counter_add(fbc, amount, batch) \ + percpu_counter_add(fbc, amount) + static inline void percpu_counter_add(struct percpu_counter *fbc, s32 amount) { |