diff mbox series

[v2,1/2] cpufreq: Reintroduce ready() callback

Message ID 20220128032554.155132-1-bjorn.andersson@linaro.org
State New
Headers show
Series [v2,1/2] cpufreq: Reintroduce ready() callback | expand

Commit Message

Bjorn Andersson Jan. 28, 2022, 3:25 a.m. UTC 
This effectively revert '4bf8e582119e ("cpufreq: Remove ready()
callback")' (except the Chinese translation), in order to reintroduce
the ready callback.

This is needed in order to be able to leave the thermal pressure
interrupts in the Qualcomm CPUfreq driver disabled during
initialization, so that it doesn't fire while related_cpus are still 0.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---

Changes since v1:
- New patch

 Documentation/cpu-freq/cpu-drivers.rst | 3 +++
 drivers/cpufreq/cpufreq.c              | 4 ++++
 include/linux/cpufreq.h                | 3 +++
 3 files changed, 10 insertions(+)

Comments

Viresh Kumar Feb. 9, 2022, 7:50 a.m. UTC | #1 
On 27-01-22, 19:25, Bjorn Andersson wrote:
> This effectively revert '4bf8e582119e ("cpufreq: Remove ready()
> callback")' (except the Chinese translation), in order to reintroduce
> the ready callback.

I have added the Chinese translation back and applied both patches. Thanks.
diff mbox series

Patch

diff --git a/Documentation/cpu-freq/cpu-drivers.rst b/Documentation/cpu-freq/cpu-drivers.rst
index 3b32336a7803..d84ededb66f9 100644
--- a/Documentation/cpu-freq/cpu-drivers.rst
+++ b/Documentation/cpu-freq/cpu-drivers.rst
@@ -75,6 +75,9 @@  And optionally
  .resume - A pointer to a per-policy resume function which is called
  with interrupts disabled and _before_ the governor is started again.
 
+ .ready - A pointer to a per-policy ready function which is called after
+ the policy is fully initialized.
+
  .attr - A pointer to a NULL-terminated list of "struct freq_attr" which
  allow to export values to sysfs.
 
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index b8d95536ee22..80f535cc8a75 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1518,6 +1518,10 @@  static int cpufreq_online(unsigned int cpu)
 
 	kobject_uevent(&policy->kobj, KOBJ_ADD);
 
+	/* Callback for handling stuff after policy is ready */
+	if (cpufreq_driver->ready)
+		cpufreq_driver->ready(policy);
+
 	if (cpufreq_thermal_control_enabled(cpufreq_driver))
 		policy->cdev = of_cpufreq_cooling_register(policy);
 
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 1ab29e61b078..3522a272b74d 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -382,6 +382,9 @@  struct cpufreq_driver {
 	int		(*suspend)(struct cpufreq_policy *policy);
 	int		(*resume)(struct cpufreq_policy *policy);
 
+	/* Will be called after the driver is fully initialized */
+	void		(*ready)(struct cpufreq_policy *policy);
+
 	struct freq_attr **attr;
 
 	/* platform specific boost support code */