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arm64: cpu hotplug: ensure we mask out CPU_TASKS_FROZEN in notifiers

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We have a couple of CPU hotplug notifiers for resetting the CPU debug
state to a sane value when a CPU comes online.

This patch ensures that we mask out CPU_TASKS_FROZEN so that we don't
miss any online events occuring due to suspend/resume.

Acked-by: Lorenzo Pieralisi <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
This commit is contained in:
Will Deacon committed 2015-09-17 11:57:02 +01:00
1 parent d10bcd4733
commit e56d82a116
2 files changed
+2 -2
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arch/arm64/kernel/debug-monitors.c
+1 -1
View File
@@ -134,7 +134,7 @@ static int os_lock_notify(struct notifier_block *self,
unsigned long action, void *data)
{
int cpu = (unsigned long)data;
if (action == CPU_ONLINE)
if ((action & ~CPU_TASKS_FROZEN) == CPU_ONLINE)
smp_call_function_single(cpu, clear_os_lock, NULL, 1);
return NOTIFY_OK;
}
arch/arm64/kernel/hw_breakpoint.c
+1 -1
View File
@@ -872,7 +872,7 @@ static int hw_breakpoint_reset_notify(struct notifier_block *self,
void *hcpu)
{
int cpu = (long)hcpu;
if (action == CPU_ONLINE)
if ((action & ~CPU_TASKS_FROZEN) == CPU_ONLINE)
smp_call_function_single(cpu, hw_breakpoint_reset, NULL, 1);
return NOTIFY_OK;
}