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

PATCH New Helge Deller 1 participant 1 message Sep 24, 2016 PA-RISC architecture

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Helge Deller

author maintainer

2016-09-24 20:22 UTC #0 lore raw

PATCH 1/1 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 Helge Deller <[email protected]>

Cc [email protected] # 4.7+

arch/parisc/kernel/time.c +0 -5

index 4b0b963..9b63b87 100644
@@ -226,12 +226,6 @@ void __init start_cpu_itimer(void)
 	unsigned int cpu = smp_processor_id();
 	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