From: KAMEZAWA Hiroyuki Date: Wed, 19 Apr 2006 05:20:21 +0000 (-0700) Subject: [PATCH] for_each_possible_cpu: x86_64 X-Git-Tag: firefly_0821_release~36091 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=676ff453e58c5ff7ddbfebf5a11142e3e4add161;p=firefly-linux-kernel-4.4.55.git [PATCH] for_each_possible_cpu: x86_64 for_each_cpu() actually iterates across all possible CPUs. We've had mistakes in the past where people were using for_each_cpu() where they should have been iterating across only online or present CPUs. This is inefficient and possibly buggy. We're renaming for_each_cpu() to for_each_possible_cpu() to avoid this in the future. This patch replaces for_each_cpu with for_each_possible_cpu. Signed-off-by: KAMEZAWA Hiroyuki Acked-by: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/include/asm-x86_64/percpu.h b/include/asm-x86_64/percpu.h index 4405b4adeaba..7f33aaf9f7b1 100644 --- a/include/asm-x86_64/percpu.h +++ b/include/asm-x86_64/percpu.h @@ -26,7 +26,7 @@ #define percpu_modcopy(pcpudst, src, size) \ do { \ unsigned int __i; \ - for_each_cpu(__i) \ + for_each_possible_cpu(__i) \ memcpy((pcpudst)+__per_cpu_offset(__i), \ (src), (size)); \ } while (0)