On 4/27/06, Mauricio Lin <mauriciolin2000@xxxxxxxxxxxx> wrote:
> Since sched_clock() function is implemented differently for each arch,
> how can I figure out the maximum value sched_clock can return?
This doesn't concern your question, but I was looking at:
sched_clock() defined in arch/i386/kernel/timers/timer_tsc.c:
<definition_sans_comments>
unsigned long long sched_clock(void)
{
unsigned long long this_offset;
#ifndef CONFIG_NUMA
if (!use_tsc)
#endif
return jiffies_64 * (1000000000 / HZ);
rdtscll(this_offset);
return cycles_2_ns(this_offset);
}
</definition_sans_comments>
Why do we have the second return statement in the first place? It will
never be executed.
--
./hareesh
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