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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2007-10-17 02:25:45 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-17 11:42:44 -0400
commitbf1d89c81352f6eca72d0c10cfee3dba29ef5efb (patch)
tree4154acea12a0273ffbc3eafe39530b2e25aa4ed5 /lib/percpu_counter.c
parent52d9f3b4090922f34497ace82bd062d80a465a29 (diff)
lib: percpu_count_sum()
Provide an accurate version of percpu_counter_read. 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 'lib/percpu_counter.c')
-rw-r--r--lib/percpu_counter.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/percpu_counter.c b/lib/percpu_counter.c
index b0d80ea22a33..3b0ed80c1efd 100644
--- a/lib/percpu_counter.c
+++ b/lib/percpu_counter.c
@@ -52,7 +52,7 @@ EXPORT_SYMBOL(__percpu_counter_add);
52 * Add up all the per-cpu counts, return the result. This is a more accurate 52 * Add up all the per-cpu counts, return the result. This is a more accurate
53 * but much slower version of percpu_counter_read_positive() 53 * but much slower version of percpu_counter_read_positive()
54 */ 54 */
55s64 percpu_counter_sum_positive(struct percpu_counter *fbc) 55s64 __percpu_counter_sum(struct percpu_counter *fbc)
56{ 56{
57 s64 ret; 57 s64 ret;
58 int cpu; 58 int cpu;
@@ -64,9 +64,9 @@ s64 percpu_counter_sum_positive(struct percpu_counter *fbc)
64 ret += *pcount; 64 ret += *pcount;
65 } 65 }
66 spin_unlock(&fbc->lock); 66 spin_unlock(&fbc->lock);
67 return ret < 0 ? 0 : ret; 67 return ret;
68} 68}
69EXPORT_SYMBOL(percpu_counter_sum_positive); 69EXPORT_SYMBOL(__percpu_counter_sum);
70 70
71void percpu_counter_init(struct percpu_counter *fbc, s64 amount) 71void percpu_counter_init(struct percpu_counter *fbc, s64 amount)
72{ 72{