Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-11 22:51:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
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 <lorenzo.pieralisi@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Will Deacon 2015-09-11 15:31:24 +01:00
parent d10bcd4733
commit e56d82a116
2 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm64/kernel/debug-monitors.c
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;
}

2
arch/arm64/kernel/hw_breakpoint.c
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;
}