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Revert "parisc: Mark sched_clock unstable only if clocks are not syncronized"

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This reverts commit d97180ad68.

It triggers RCU stalls at boot with a 32-bit kernel.

Signed-off-by: Helge Deller <deller@gmx.de>
Noticed-by: John David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org # v5.15+
This commit is contained in:
Helge Deller 2022-05-07 15:32:38 +02:00
parent 9dc4241bb1
commit 7962c08964
2 changed files with 6 additions and 3 deletions
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2
arch/parisc/kernel/setup.c
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@ -161,6 +161,8 @@ void __init setup_arch(char **cmdline_p)
#ifdef CONFIG_PA11
dma_ops_init();
#endif
clear_sched_clock_stable();
}
/*

7
arch/parisc/kernel/time.c
View File

@ -267,9 +267,6 @@ 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;
@ -277,6 +274,10 @@ 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);