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Commit c25323c0 authored by Thomas Gleixner's avatar Thomas Gleixner
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x86/tsc: Use topology functions



It's simpler to look at the topology mask than iterating over all online cpus
to find a cpu on the same package.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
parent 81f70ba2
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+4 −4
Original line number Diff line number Diff line
@@ -1246,14 +1246,14 @@ void __init tsc_init(void)
 */
unsigned long calibrate_delay_is_known(void)
{
	int i, cpu = smp_processor_id();
	int sibling, cpu = smp_processor_id();

	if (!tsc_disabled && !cpu_has(&cpu_data(cpu), X86_FEATURE_CONSTANT_TSC))
		return 0;

	for_each_online_cpu(i)
		if (cpu_data(i).phys_proc_id == cpu_data(cpu).phys_proc_id)
			return cpu_data(i).loops_per_jiffy;
	sibling = cpumask_any_but(topology_core_cpumask(cpu), cpu);
	if (sibling < nr_cpu_ids)
		return cpu_data(sibling).loops_per_jiffy;
	return 0;
}
#endif