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sched: optimize sched_clock() a bit

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sched_clock() uses cycles_2_ns() needlessly - which is an irq-disabling
variant of __cycles_2_ns().

Most of the time sched_clock() is called with irqs disabled already.
The few places that call it with irqs enabled need to be updated.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-11-08 17:05:38 +01:00
parent 0d12cdd5f8
commit 7cbaef9c83
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/tsc.c
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@ -55,7 +55,7 @@ u64 native_sched_clock(void)
rdtscll(this_offset);
/* return the value in ns */
return cycles_2_ns(this_offset);
return __cycles_2_ns(this_offset);
}
/* We need to define a real function for sched_clock, to override the