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kernel: Add snapshot of changes to support cpu isolation

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This snapshot is taken from msm-4.19 as of commit 5debecbe7195
("trace: filter out spurious preemption and IRQs disable traces").

Change-Id: I222aa448ac68f7365065f62dba9db94925da38a0
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
This commit is contained in:
Satya Durga Srinivasu Prabhala
2019-09-17 10:34:18 -07:00
parent 8573d7bfaa
commit 201ea48219
20 changed files with 398 additions and 77 deletions
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5
kernel/time/timer.c
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@@ -2038,7 +2038,8 @@ static void __migrate_timers(unsigned int cpu, bool remove_pinned)
*/
forward_timer_base(new_base);
BUG_ON(old_base->running_timer);
if (!cpu_online(cpu))
BUG_ON(old_base->running_timer);
for (i = 0; i < WHEEL_SIZE; i++)
migrate_timer_list(new_base, old_base->vectors + i,
@@ -2057,12 +2058,10 @@ int timers_dead_cpu(unsigned int cpu)
return 0;
}
#ifdef CONFIG_CPUSETS
void timer_quiesce_cpu(void *cpup)
{
__migrate_timers(*(unsigned int *)cpup, false);
}
#endif /* CONFIG_CPUSETS */
#endif /* CONFIG_HOTPLUG_CPU */