Re: [PATCH 2/11] Sched clock paravirt op

From: Zachary Amsden
Date: Mon Feb 05 2007 - 23:01:06 EST


Zachary Amsden wrote:
#include "mach_timer.h"
@@ -102,9 +103,6 @@ unsigned long long sched_clock(void)
{
unsigned long long this_offset;
- if (unlikely(custom_sched_clock))
- return (*custom_sched_clock)();
-
/*
* Fall back to jiffies if there's no TSC available:
*/
@@ -113,13 +111,13 @@ unsigned long long sched_clock(void)
return (jiffies_64 - INITIAL_JIFFIES) * (1000000000 / HZ);
/* read the Time Stamp Counter: */
- rdtscll(this_offset);
+ get_scheduled_cycles(this_offset);
/* return the value in ns */
return cycles_2_ns(this_offset);
}

I missed a title / signed-off on this guy.


Internally, sched_clock runs in units of nanoseconds, not CPU cycles. This was wrong in my previous patch. Fix it so everyone can use the same cycles_2_ns code in tsc.c.

Signed-off-by: Zachary Amsden <zach@xxxxxxxxxx>
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