Hi Rafael, On Tue, Sep 22 2020 at 10:00 -0600, Rafael J. Wysocki wrote:
Sorry for the delay. On Wed, Sep 9, 2020 at 12:15 AM Lina Iyer <ilina@xxxxxxxxxxxxxx> wrote:Commit 83788c0caed3 ("cpuidle: remove unused exports") removed capability of registering cpuidle governors, which was unused at that time. By exporting the symbol, let's allow platform specific modules to register cpuidle governors and use cpuidle_governor_latency_req() to get the QoS for the CPU.Which platform-specific modules may want to do that and why?
We are planning a custom cpuidle governor for QCOM SoCs. With Android, the idea is to make them loadable modules so they can be in a separate partition. Thanks, Lina
Signed-off-by: Lina Iyer <ilina@xxxxxxxxxxxxxx> --- drivers/cpuidle/governor.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/cpuidle/governor.c b/drivers/cpuidle/governor.c index 29acaf48e575..0e51ed25665e 100644 --- a/drivers/cpuidle/governor.c +++ b/drivers/cpuidle/governor.c @@ -102,6 +102,7 @@ int cpuidle_register_governor(struct cpuidle_governor *gov) return ret; } +EXPORT_SYMBOL_GPL(cpuidle_register_governor); /** * cpuidle_governor_latency_req - Compute a latency constraint for CPU @@ -118,3 +119,4 @@ s64 cpuidle_governor_latency_req(unsigned int cpu) return (s64)device_req * NSEC_PER_USEC; } +EXPORT_SYMBOL_GPL(cpuidle_governor_latency_req); -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
