[PATCH] for_each_possible_cpu: defines for_each_possible_cpu (631d6747) · Commits · 戴 / test

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>

include/linux/cpumask.h

+3 −2

Original line number	Diff line number	Diff line
		@@ -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
		*
		@@ -406,6 +406,7 @@ int __any_online_cpu(const cpumask_t *mask);
		#endif

		#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)

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