[2/2] powerpc/cpuidle: dynamically register/unregister cpuidle_device during hotplug
diff mbox series

Message ID 1522372657-27490-2-git-send-email-kernelfans@gmail.com
State Superseded
Headers show
Series
  • [1/2] powerpc/cpu: raise DEVICE_ADD/REMOVE msg to usrspace
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Commit Message

Pingfan Liu March 30, 2018, 1:17 a.m. UTC
Now for pseries, ../cpu/cpuX is created and deleted dynamically.
Hence cpuX/cpuidle should be created and deleted dynamically.
For powernv, it is harmless to use the same method.

Signed-off-by: Pingfan Liu <kernelfans@gmail.com>
---
 drivers/cpuidle/cpuidle-powernv.c | 2 ++
 drivers/cpuidle/cpuidle-pseries.c | 2 ++
 2 files changed, 4 insertions(+)

Patch
diff mbox series

diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c
index 1a8234e..962c944 100644
--- a/drivers/cpuidle/cpuidle-powernv.c
+++ b/drivers/cpuidle/cpuidle-powernv.c
@@ -144,6 +144,7 @@  static int powernv_cpuidle_cpu_online(unsigned int cpu)
 	struct cpuidle_device *dev = per_cpu(cpuidle_devices, cpu);
 
 	if (dev && cpuidle_get_driver()) {
+		cpuidle_register_device(dev);
 		cpuidle_pause_and_lock();
 		cpuidle_enable_device(dev);
 		cpuidle_resume_and_unlock();
@@ -159,6 +160,7 @@  static int powernv_cpuidle_cpu_dead(unsigned int cpu)
 		cpuidle_pause_and_lock();
 		cpuidle_disable_device(dev);
 		cpuidle_resume_and_unlock();
+		cpuidle_unregister_device(dev);
 	}
 	return 0;
 }
diff --git a/drivers/cpuidle/cpuidle-pseries.c b/drivers/cpuidle/cpuidle-pseries.c
index 9e56bc4..a53be8a 100644
--- a/drivers/cpuidle/cpuidle-pseries.c
+++ b/drivers/cpuidle/cpuidle-pseries.c
@@ -193,6 +193,7 @@  static int pseries_cpuidle_cpu_online(unsigned int cpu)
 	struct cpuidle_device *dev = per_cpu(cpuidle_devices, cpu);
 
 	if (dev && cpuidle_get_driver()) {
+		cpuidle_register_device(dev);
 		cpuidle_pause_and_lock();
 		cpuidle_enable_device(dev);
 		cpuidle_resume_and_unlock();
@@ -208,6 +209,7 @@  static int pseries_cpuidle_cpu_dead(unsigned int cpu)
 		cpuidle_pause_and_lock();
 		cpuidle_disable_device(dev);
 		cpuidle_resume_and_unlock();
+		cpuidle_unregister_device(dev);
 	}
 	return 0;
 }