percpu: clean up percpu variable definitions
Percpu variable definition is about to be updated such that all percpu
symbols including the static ones must be unique. Update percpu
variable definitions accordingly.
* as,cfq: rename ioc_count uniquely
* cpufreq: rename cpu_dbs_info uniquely
* xen: move nesting_count out of xen_evtchn_do_upcall() and rename it
* mm: move ratelimits out of balance_dirty_pages_ratelimited_nr() and
rename it
* ipv4,6: rename cookie_scratch uniquely
* x86 perf_counter: rename prev_left to pmc_prev_left, irq_entry to
pmc_irq_entry and nmi_entry to pmc_nmi_entry
* perf_counter: rename disable_count to perf_disable_count
* ftrace: rename test_event_disable to ftrace_test_event_disable
* kmemleak: rename test_pointer to kmemleak_test_pointer
* mce: rename next_interval to mce_next_interval
[ Impact: percpu usage cleanups, no duplicate static percpu var names ]
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: linux-mm <linux-mm@kvack.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <srostedt@redhat.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Andi Kleen <andi@firstfloor.org>
diff --git a/block/as-iosched.c b/block/as-iosched.c
index 7a12cf6..ce8ba57 100644
--- a/block/as-iosched.c
+++ b/block/as-iosched.c
@@ -146,7 +146,7 @@
#define RQ_STATE(rq) ((enum arq_state)(rq)->elevator_private2)
#define RQ_SET_STATE(rq, state) ((rq)->elevator_private2 = (void *) state)
-static DEFINE_PER_CPU(unsigned long, ioc_count);
+static DEFINE_PER_CPU(unsigned long, as_ioc_count);
static struct completion *ioc_gone;
static DEFINE_SPINLOCK(ioc_gone_lock);
@@ -161,7 +161,7 @@
static void free_as_io_context(struct as_io_context *aic)
{
kfree(aic);
- elv_ioc_count_dec(ioc_count);
+ elv_ioc_count_dec(as_ioc_count);
if (ioc_gone) {
/*
* AS scheduler is exiting, grab exit lock and check
@@ -169,7 +169,7 @@
* complete ioc_gone and set it back to NULL.
*/
spin_lock(&ioc_gone_lock);
- if (ioc_gone && !elv_ioc_count_read(ioc_count)) {
+ if (ioc_gone && !elv_ioc_count_read(as_ioc_count)) {
complete(ioc_gone);
ioc_gone = NULL;
}
@@ -211,7 +211,7 @@
ret->seek_total = 0;
ret->seek_samples = 0;
ret->seek_mean = 0;
- elv_ioc_count_inc(ioc_count);
+ elv_ioc_count_inc(as_ioc_count);
}
return ret;
@@ -1507,7 +1507,7 @@
ioc_gone = &all_gone;
/* ioc_gone's update must be visible before reading ioc_count */
smp_wmb();
- if (elv_ioc_count_read(ioc_count))
+ if (elv_ioc_count_read(as_ioc_count))
wait_for_completion(&all_gone);
synchronize_rcu();
}