diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-03-07 14:42:35 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-03-07 14:42:35 +0000 |
| commit | 3ba4cea21901d90d703b52e4a806fbafa86037a6 (patch) | |
| tree | b556d880492a783861a39c8197e35d56ac4c77f9 /lib/percpu_ida.c | |
| parent | a2e6177c931793b4ffb30e722fce6fc7aaff9fa5 (diff) | |
| parent | 8e781f65423c2e8e65a56972ba996b6c01a5ef3e (diff) | |
Merge branch 'for-rmk/perf' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into devel-stable
* Support for Qualcomm Krait processors (run perf on your phone!)
* Support for Cortex-A12 (run perf stat on your FPGA!)
* Support for perf_sample_event_took, allowing us to automatically decrease
the sample rate if we can't handle the PMU interrupts quickly enough
(run perf record on your FPGA!).
As part of the Krait support, we also gain support for PPI generation by
the PMU.
Diffstat (limited to 'lib/percpu_ida.c')
| -rw-r--r-- | lib/percpu_ida.c | 7 |
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, /* * Try to steal tags from a remote cpu's percpu freelist. * - * We first check how many percpu freelists have tags - we don't steal tags - * unless enough percpu freelists have tags on them that it's possible more than - * half the total tags could be stuck on remote percpu freelists. + * We first check how many percpu freelists have tags * * Then we iterate through the cpus until we find some tags - we don't attempt * 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, struct percpu_ida_cpu *remote; for (cpus_have_tags = cpumask_weight(&pool->cpus_have_tags); - cpus_have_tags * pool->percpu_max_size > pool->nr_tags / 2; - cpus_have_tags--) { + cpus_have_tags; cpus_have_tags--) { cpu = cpumask_next(cpu, &pool->cpus_have_tags); if (cpu >= nr_cpu_ids) { |