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/drivers/xen/events.c b/drivers/xen/events.c
index ab581fa..7d2987e 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -602,6 +602,8 @@
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 @@
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 @@
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 @@
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: