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authorRavikiran G Thirumalai <kiran@scalex86.org>2006-06-23 02:05:40 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 07:43:06 -0700
commit3cbc564024d8f174202f023e8a2991782f6a9431 (patch)
tree5d523ef9694b7a0bf07d4db58718f4654afa3f04 /mm/swap.c
parentd09042da7284a86ffbdd18695f517a71514ed598 (diff)
downloadop-kernel-dev-3cbc564024d8f174202f023e8a2991782f6a9431.zip
op-kernel-dev-3cbc564024d8f174202f023e8a2991782f6a9431.tar.gz
[PATCH] percpu_counters: create lib/percpu_counter.c
- Move percpu_counter routines from mm/swap.c to lib/percpu_counter.c Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/swap.c')
-rw-r--r--mm/swap.c42
1 files changed, 0 insertions, 42 deletions
diff --git a/mm/swap.c b/mm/swap.c
index 88895c2..03ae207 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -480,48 +480,6 @@ static int cpu_swap_callback(struct notifier_block *nfb,
#endif /* CONFIG_HOTPLUG_CPU */
#endif /* CONFIG_SMP */
-#ifdef CONFIG_SMP
-void percpu_counter_mod(struct percpu_counter *fbc, long amount)
-{
- long count;
- long *pcount;
- int cpu = get_cpu();
-
- pcount = per_cpu_ptr(fbc->counters, cpu);
- count = *pcount + amount;
- if (count >= FBC_BATCH || count <= -FBC_BATCH) {
- spin_lock(&fbc->lock);
- fbc->count += count;
- *pcount = 0;
- spin_unlock(&fbc->lock);
- } else {
- *pcount = count;
- }
- put_cpu();
-}
-EXPORT_SYMBOL(percpu_counter_mod);
-
-/*
- * Add up all the per-cpu counts, return the result. This is a more accurate
- * but much slower version of percpu_counter_read_positive()
- */
-long percpu_counter_sum(struct percpu_counter *fbc)
-{
- long ret;
- int cpu;
-
- spin_lock(&fbc->lock);
- ret = fbc->count;
- for_each_possible_cpu(cpu) {
- long *pcount = per_cpu_ptr(fbc->counters, cpu);
- ret += *pcount;
- }
- spin_unlock(&fbc->lock);
- return ret < 0 ? 0 : ret;
-}
-EXPORT_SYMBOL(percpu_counter_sum);
-#endif
-
/*
* Perform any setup for the swap system
*/
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