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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 <richard@rsk.demon.co.uk>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Richard Kennedy 2010-08-09 17:20:34 -07:00 committed by Linus Torvalds
parent d7a7c57393
commit 878ae12749
1 changed files with 1 additions and 1 deletions
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kernel/stop_machine.c
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@ -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);