[PATCH] for_each_possible_cpu: defines for_each_possible_cpu

for_each_cpu() is a for-loop over cpu_possible_map.  for_each_online_cpu is
for-loop cpu over cpu_online_map.  .....for_each_cpu() is not sufficiently
explicit and can lead to mistakes.

This patch adds for_each_possible_cpu() in preparation for the removal of
for_each_cpu().

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 99e6115d8e52..9cbb781d6f80 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -67,7 +67,7 @@
  *
  * int any_online_cpu(mask)             First online cpu in mask
  *
- * for_each_cpu(cpu)                    for-loop cpu over cpu_possible_map
+ * for_each_possible_cpu(cpu)           for-loop cpu over cpu_possible_map
  * for_each_online_cpu(cpu)             for-loop cpu over cpu_online_map
  * for_each_present_cpu(cpu)            for-loop cpu over cpu_present_map
  *
@@ -405,7 +405,8 @@ int __any_online_cpu(const cpumask_t *mask);
 #define any_online_cpu(mask)            0
 #endif
 
-#define for_each_cpu(cpu)         for_each_cpu_mask((cpu), cpu_possible_map)
+#define for_each_cpu(cpu)  for_each_cpu_mask((cpu), cpu_possible_map)
+#define for_each_possible_cpu(cpu)  for_each_cpu_mask((cpu), cpu_possible_map)
 #define for_each_online_cpu(cpu)  for_each_cpu_mask((cpu), cpu_online_map)
 #define for_each_present_cpu(cpu) for_each_cpu_mask((cpu), cpu_present_map)