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authorTakashi Iwai <tiwai@suse.de>2014-02-20 01:50:32 -0500
committerTakashi Iwai <tiwai@suse.de>2014-02-20 01:50:32 -0500
commitf31f40be8f82d5eeb4ca084f9ac0f11ca265876b (patch)
tree6fce9ac78045249084d641945e094dcaea72d265 /lib/percpu_ida.c
parent13c12dbe3a2ce17227f7ddef652b6a53c78fa51f (diff)
parent895be5b31e5175bef575008aadb4f0a27b850daa (diff)
Merge tag 'asoc-v3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v3.14 A few fixes, all driver speccific ones. The DaVinci ones aren't as clear as they should be from the subject lines on the commits but they fix issues which will prevent correct operation in some use cases and only affect that particular driver so are reasonably safe.
Diffstat (limited to 'lib/percpu_ida.c')
-rw-r--r--lib/percpu_ida.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/lib/percpu_ida.c b/lib/percpu_ida.c
index 7be235f1a70b..93d145e5539c 100644
--- a/lib/percpu_ida.c
+++ b/lib/percpu_ida.c
@@ -54,9 +54,7 @@ static inline void move_tags(unsigned *dst, unsigned *dst_nr,
54/* 54/*
55 * Try to steal tags from a remote cpu's percpu freelist. 55 * Try to steal tags from a remote cpu's percpu freelist.
56 * 56 *
57 * We first check how many percpu freelists have tags - we don't steal tags 57 * We first check how many percpu freelists have tags
58 * unless enough percpu freelists have tags on them that it's possible more than
59 * half the total tags could be stuck on remote percpu freelists.
60 * 58 *
61 * Then we iterate through the cpus until we find some tags - we don't attempt 59 * Then we iterate through the cpus until we find some tags - we don't attempt
62 * to find the "best" cpu to steal from, to keep cacheline bouncing to a 60 * to find the "best" cpu to steal from, to keep cacheline bouncing to a
@@ -69,8 +67,7 @@ static inline void steal_tags(struct percpu_ida *pool,
69 struct percpu_ida_cpu *remote; 67 struct percpu_ida_cpu *remote;
70 68
71 for (cpus_have_tags = cpumask_weight(&pool->cpus_have_tags); 69 for (cpus_have_tags = cpumask_weight(&pool->cpus_have_tags);
72 cpus_have_tags * pool->percpu_max_size > pool->nr_tags / 2; 70 cpus_have_tags; cpus_have_tags--) {
73 cpus_have_tags--) {
74 cpu = cpumask_next(cpu, &pool->cpus_have_tags); 71 cpu = cpumask_next(cpu, &pool->cpus_have_tags);
75 72
76 if (cpu >= nr_cpu_ids) { 73 if (cpu >= nr_cpu_ids) {