aboutsummaryrefslogtreecommitdiff
path: root/mm
diff options
context:
space:
mode:
authorTejun Heo <tj@kernel.org>2009-10-29 22:34:13 +0900
committerTejun Heo <tj@kernel.org>2009-10-29 22:34:13 +0900
commit1871e52c76dd95895caeb772f845a1718dcbcd75 (patch)
tree49e8148326f65353e673204f427bd4545eb26c16 /mm
parent0f5e4816dbf38ce9488e611ca2296925c1e90d5e (diff)
downloadvexpress-lsk-1871e52c76dd95895caeb772f845a1718dcbcd75.tar.gz
percpu: make percpu symbols under kernel/ and mm/ unique
This patch updates percpu related symbols under kernel/ and mm/ such that percpu symbols are unique and don't clash with local symbols. This serves two purposes of decreasing the possibility of global percpu symbol collision and allowing dropping per_cpu__ prefix from percpu symbols. * kernel/lockdep.c: s/lock_stats/cpu_lock_stats/ * kernel/sched.c: s/init_rq_rt/init_rt_rq_var/ (any better idea?) s/sched_group_cpus/sched_groups/ * kernel/softirq.c: s/ksoftirqd/run_ksoftirqd/a * kernel/softlockup.c: s/(*)_timestamp/softlockup_\1_ts/ s/watchdog_task/softlockup_watchdog/ s/timestamp/ts/ for local variables * kernel/time/timer_stats: s/lookup_lock/tstats_lookup_lock/ * mm/slab.c: s/reap_work/slab_reap_work/ s/reap_node/slab_reap_node/ * mm/vmstat.c: local variable changed to avoid collision with vmstat_work Partly based on Rusty Russell's "alloc_percpu: rename percpu vars which cause name clashes" patch. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: (slab/vmstat) Christoph Lameter <cl@linux-foundation.org> Reviewed-by: Christoph Lameter <cl@linux-foundation.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Ingo Molnar <mingo@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Nick Piggin <npiggin@suse.de>
Diffstat (limited to 'mm')
-rw-r--r--mm/slab.c18
-rw-r--r--mm/vmstat.c7
2 files changed, 12 insertions, 13 deletions
diff --git a/mm/slab.c b/mm/slab.c
index 7dfa481c96b..211b1746c63 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -685,7 +685,7 @@ int slab_is_available(void)
return g_cpucache_up >= EARLY;
}
-static DEFINE_PER_CPU(struct delayed_work, reap_work);
+static DEFINE_PER_CPU(struct delayed_work, slab_reap_work);
static inline struct array_cache *cpu_cache_get(struct kmem_cache *cachep)
{
@@ -826,7 +826,7 @@ __setup("noaliencache", noaliencache_setup);
* objects freed on different nodes from which they were allocated) and the
* flushing of remote pcps by calling drain_node_pages.
*/
-static DEFINE_PER_CPU(unsigned long, reap_node);
+static DEFINE_PER_CPU(unsigned long, slab_reap_node);
static void init_reap_node(int cpu)
{
@@ -836,17 +836,17 @@ static void init_reap_node(int cpu)
if (node == MAX_NUMNODES)
node = first_node(node_online_map);
- per_cpu(reap_node, cpu) = node;
+ per_cpu(slab_reap_node, cpu) = node;
}
static void next_reap_node(void)
{
- int node = __get_cpu_var(reap_node);
+ int node = __get_cpu_var(slab_reap_node);
node = next_node(node, node_online_map);
if (unlikely(node >= MAX_NUMNODES))
node = first_node(node_online_map);
- __get_cpu_var(reap_node) = node;
+ __get_cpu_var(slab_reap_node) = node;
}
#else
@@ -863,7 +863,7 @@ static void next_reap_node(void)
*/
static void __cpuinit start_cpu_timer(int cpu)
{
- struct delayed_work *reap_work = &per_cpu(reap_work, cpu);
+ struct delayed_work *reap_work = &per_cpu(slab_reap_work, cpu);
/*
* When this gets called from do_initcalls via cpucache_init(),
@@ -1027,7 +1027,7 @@ static void __drain_alien_cache(struct kmem_cache *cachep,
*/
static void reap_alien(struct kmem_cache *cachep, struct kmem_list3 *l3)
{
- int node = __get_cpu_var(reap_node);
+ int node = __get_cpu_var(slab_reap_node);
if (l3->alien) {
struct array_cache *ac = l3->alien[node];
@@ -1286,9 +1286,9 @@ static int __cpuinit cpuup_callback(struct notifier_block *nfb,
* anything expensive but will only modify reap_work
* and reschedule the timer.
*/
- cancel_rearming_delayed_work(&per_cpu(reap_work, cpu));
+ cancel_rearming_delayed_work(&per_cpu(slab_reap_work, cpu));
/* Now the cache_reaper is guaranteed to be not running. */
- per_cpu(reap_work, cpu).work.func = NULL;
+ per_cpu(slab_reap_work, cpu).work.func = NULL;
break;
case CPU_DOWN_FAILED:
case CPU_DOWN_FAILED_FROZEN:
diff --git a/mm/vmstat.c b/mm/vmstat.c
index c81321f9fee..dad2327e458 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -883,11 +883,10 @@ static void vmstat_update(struct work_struct *w)
static void __cpuinit start_cpu_timer(int cpu)
{
- struct delayed_work *vmstat_work = &per_cpu(vmstat_work, cpu);
+ struct delayed_work *work = &per_cpu(vmstat_work, cpu);
- INIT_DELAYED_WORK_DEFERRABLE(vmstat_work, vmstat_update);
- schedule_delayed_work_on(cpu, vmstat_work,
- __round_jiffies_relative(HZ, cpu));
+ INIT_DELAYED_WORK_DEFERRABLE(work, vmstat_update);
+ schedule_delayed_work_on(cpu, work, __round_jiffies_relative(HZ, cpu));
}
/*