From 878ae1274944908e1863b06b03a2c94907afaa20 Mon Sep 17 00:00:00 2001 From: Richard Kennedy Date: Mon, 9 Aug 2010 17:20:34 -0700 Subject: [PATCH] stop_machine: struct cpu_stopper, remove alignment padding on 64 bits Reorder elements in structure cpu_stopper to remove alignment padding on 64 bit builds, this shrinks its size from 40 to 32 bytes saving 8 bytes per cpu. Signed-off-by: Richard Kennedy Acked-by: Tejun Heo Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Rusty Russell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/stop_machine.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c index 70f8d90331e..4372ccb2512 100644 --- a/kernel/stop_machine.c +++ b/kernel/stop_machine.c @@ -35,9 +35,9 @@ struct cpu_stop_done { /* the actual stopper, one per every possible cpu, enabled on online cpus */ struct cpu_stopper { spinlock_t lock; + bool enabled; /* is this stopper enabled? */ struct list_head works; /* list of pending works */ struct task_struct *thread; /* stopper thread */ - bool enabled; /* is this stopper enabled? */ }; static DEFINE_PER_CPU(struct cpu_stopper, cpu_stopper); -- 2.20.1