Messages in this thread Patch in this message |  | | | Subject | [PATCH] stop_machine: struct cpu_stopper, remove alignment padding on 64 bits | | From | Richard Kennedy <> | | Date | Thu, 05 Aug 2010 12:11:57 +0100 |
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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> --- patch against 2.6.35 compiled & tested on x86_64 regards Richard
diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c index 70f8d90..4372ccb 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);
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