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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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9
drivers/xen/events.c
View file

@ -602,6 +602,8 @@ irqreturn_t xen_debug_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
static DEFINE_PER_CPU(unsigned, xed_nesting_count);
/*
* Search the CPUs pending events bitmasks. For each one found, map
* the event number to an irq, and feed it into do_IRQ() for
@ -617,7 +619,6 @@ void xen_evtchn_do_upcall(struct pt_regs *regs)
struct pt_regs *old_regs = set_irq_regs(regs);
struct shared_info *s = HYPERVISOR_shared_info;
struct vcpu_info *vcpu_info = __get_cpu_var(xen_vcpu);
static DEFINE_PER_CPU(unsigned, nesting_count);
unsigned count;
exit_idle();
@ -628,7 +629,7 @@ void xen_evtchn_do_upcall(struct pt_regs *regs)
vcpu_info->evtchn_upcall_pending = 0;
if (__get_cpu_var(nesting_count)++)
if (__get_cpu_var(xed_nesting_count)++)
goto out;
#ifndef CONFIG_X86 /* No need for a barrier -- XCHG is a barrier on x86. */
@ -653,8 +654,8 @@ void xen_evtchn_do_upcall(struct pt_regs *regs)
BUG_ON(!irqs_disabled());
count = __get_cpu_var(nesting_count);
__get_cpu_var(nesting_count) = 0;
count = __get_cpu_var(xed_nesting_count);
__get_cpu_var(xed_nesting_count) = 0;
} while(count != 1);
out: