Commit d97180ad authored by Helge Deller's avatar Helge Deller
Browse files

parisc: Mark sched_clock unstable only if clocks are not syncronized 



We check at runtime if the cr16 clocks are stable across CPUs. Only mark
the sched_clock unstable by calling clear_sched_clock_stable() if we
know that we run on a system which isn't syncronized across CPUs.

Signed-off-by: default avatarHelge Deller <deller@gmx.de>
parent 907872ba

arch/parisc/kernel/setup.c

+0 −2
Original line number Diff line number Diff line
@@ -150,8 +150,6 @@ void __init setup_arch(char **cmdline_p) 
#ifdef CONFIG_PA11

	dma_ops_init();

#endif



	clear_sched_clock_stable();

}



/*

arch/parisc/kernel/time.c

+3 −4
Original line number Diff line number Diff line
@@ -265,6 +265,9 @@ static int __init init_cr16_clocksource(void) 
			    (cpu0_loc == per_cpu(cpu_data, cpu).cpu_loc))

				continue;



			/* mark sched_clock unstable */

			clear_sched_clock_stable();



			clocksource_cr16.name = "cr16_unstable";

			clocksource_cr16.flags = CLOCK_SOURCE_UNSTABLE;

			clocksource_cr16.rating = 0;
@@ -272,10 +275,6 @@ static int __init init_cr16_clocksource(void) 
		}

	}



	/* XXX: We may want to mark sched_clock stable here if cr16 clocks are

	 *	in sync:

	 *	(clocksource_cr16.flags == CLOCK_SOURCE_IS_CONTINUOUS) */



	/* register at clocksource framework */

	clocksource_register_hz(&clocksource_cr16,

		100 * PAGE0->mem_10msec);