sched: optimize schedule() a bit on SMP
optimize schedule() a bit on SMP, by moving the rq-clock update outside the rq lock. code size is the same: text data bss dec hex filename 25725 2666 96 28487 6f47 sched.o.before 25725 2666 96 28487 6f47 sched.o.after Signed-off-by: NIngo Molnar <mingo@elte.hu> Reviewed-by: NThomas Gleixner <tglx@linutronix.de>
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