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Commit 92420bd0 authored by Helge Deller's avatar Helge Deller
Browse files

parisc: Fix self-detected CPU stall warnings on Mako machines 



The config option HAVE_UNSTABLE_SCHED_CLOCK is set automatically when compiling
for SMP. There is no need to clear the stable-clock flag via
clear_sched_clock_stable() when starting secondary CPUs, and even worse,
clearing it triggers wrong self-detected CPU stall warnings on 64bit Mako
machines.

Signed-off-by: default avatarHelge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # 4.7+
parent b391667e

arch/parisc/kernel/time.c

+0 −6
Original line number Original line Diff line number Diff line
@@ -226,12 +226,6 @@ void __init start_cpu_itimer(void) 
	unsigned int cpu = smp_processor_id();

	unsigned int cpu = smp_processor_id();

	unsigned long next_tick = mfctl(16) + clocktick;

	unsigned long next_tick = mfctl(16) + clocktick;





#if defined(CONFIG_HAVE_UNSTABLE_SCHED_CLOCK) && defined(CONFIG_64BIT)

	/* With multiple 64bit CPUs online, the cr16's are not syncronized. */

	if (cpu != 0)

		clear_sched_clock_stable();

#endif



	mtctl(next_tick, 16);		/* kick off Interval Timer (CR16) */

	mtctl(next_tick, 16);		/* kick off Interval Timer (CR16) */





	per_cpu(cpu_data, cpu).it_value = next_tick;

	per_cpu(cpu_data, cpu).it_value = next_tick;