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| author | Richard Kennedy <richard@rsk.demon.co.uk> | 2010-08-09 17:20:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-09 20:45:06 -0700 |
| commit | 878ae1274944908e1863b06b03a2c94907afaa20 (patch) | |
| tree | 35030101311d4c3e092e59da5ef0210229a81a00 | |
| parent | d7a7c573936a86474c4a5090a45a4bc6e680c117 (diff) | |
| download | lwn-878ae1274944908e1863b06b03a2c94907afaa20.tar.gz lwn-878ae1274944908e1863b06b03a2c94907afaa20.zip | |
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.c | 2 |
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); |