[PATCH] Use Local Percpu Macros for Local Percpu Variables

In general, it is more better to use get_cpu_var() and __get_cpu_var()
to access per-cpu variables on this CPU than to use smp_processor_id()
and per_cpu().  In the current default implemention they are equivalent,
but on IA64 the former is already faster, and other archs will follow.

1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/exit.c b/kernel/exit.c
index 7dee095b31bd..367854d246ef 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -41,7 +41,7 @@ static void __unhash_process(struct task_struct *p)
 		detach_pid(p, PIDTYPE_PGID);
 		detach_pid(p, PIDTYPE_SID);
 		if (p->pid)
-			per_cpu(process_counts, smp_processor_id())--;
+			__get_cpu_var(process_counts)--;
 	}
 
 	REMOVE_LINKS(p);