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| author | Will Deacon <will.deacon@arm.com> | 2015-09-11 17:31:24 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2015-09-17 13:57:02 +0300 |
| commit | e56d82a116176f7af9d642b560abbbd3a2b68013 (patch) | |
| tree | 68ce5a9e344739c7b60273e98d68ad97a2249a6f | |
| parent | d10bcd473301888f957ec4b6b12aa3621be78d59 (diff) | |
| download | linux-e56d82a116176f7af9d642b560abbbd3a2b68013.tar.xz | |
arm64: cpu hotplug: ensure we mask out CPU_TASKS_FROZEN in notifiers
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>
| -rw-r--r-- | arch/arm64/kernel/debug-monitors.c | 2 | ||||
| -rw-r--r-- | arch/arm64/kernel/hw_breakpoint.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/kernel/debug-monitors.c b/arch/arm64/kernel/debug-monitors.c index 9b3b62ac9c24..cebf78661a55 100644 --- a/arch/arm64/kernel/debug-monitors.c +++ b/arch/arm64/kernel/debug-monitors.c @@ -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; } diff --git a/arch/arm64/kernel/hw_breakpoint.c b/arch/arm64/kernel/hw_breakpoint.c index c97040ecf838..bba85c8f8037 100644 --- a/arch/arm64/kernel/hw_breakpoint.c +++ b/arch/arm64/kernel/hw_breakpoint.c @@ -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; } |