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authorRichard Kennedy2010-08-10 02:20:34 +0200
committerLinus Torvalds2010-08-10 05:45:06 +0200
commit878ae1274944908e1863b06b03a2c94907afaa20 (patch)
tree35030101311d4c3e092e59da5ef0210229a81a00
parentx86, ia64, smp: use workqueues unconditionally during do_boot_cpu() (diff)
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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>
-rw-r--r--kernel/stop_machine.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c
index 70f8d90331e9..4372ccb25127 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);