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percpu: clean up percpu variable definitions

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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 <[email protected]>
Reviewed-by: Christoph Lameter <[email protected]>
Cc: Ivan Kokshaysky <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: Dave Jones <[email protected]>
Cc: Jeremy Fitzhardinge <[email protected]>
Cc: linux-mm <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Steven Rostedt <[email protected]>
Cc: Li Zefan <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Andi Kleen <[email protected]>
This commit is contained in:
Tejun Heo 2009-06-24 15:13:48 +09:00
commit 245b2e70ea
13 changed files with 58 additions and 53 deletions
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5
mm/page-writeback.c
View file

@ -607,6 +607,8 @@ void set_page_dirty_balance(struct page *page, int page_mkwrite)
}
}
static DEFINE_PER_CPU(unsigned long, bdp_ratelimits) = 0;
/**
* balance_dirty_pages_ratelimited_nr - balance dirty memory state
* @mapping: address_space which was dirtied
@ -624,7 +626,6 @@ void set_page_dirty_balance(struct page *page, int page_mkwrite)
void balance_dirty_pages_ratelimited_nr(struct address_space *mapping,
unsigned long nr_pages_dirtied)
{
static DEFINE_PER_CPU(unsigned long, ratelimits) = 0;
unsigned long ratelimit;
unsigned long *p;
@ -637,7 +638,7 @@ void balance_dirty_pages_ratelimited_nr(struct address_space *mapping,
* tasks in balance_dirty_pages(). Period.
*/
preempt_disable();
p = &__get_cpu_var(ratelimits);
p = &__get_cpu_var(bdp_ratelimits);
*p += nr_pages_dirtied;
if (unlikely(*p >= ratelimit)) {
*p = 0;