Re: [PATCH v2 9/10] cpufreq: sched: Re-introduce cpufreq_update_util()
From: "Rafael J. Wysocki" <rafael@kernel.org>
Date: 2016-03-04 12:58:56
Also in:
linux-acpi, lkml
From: "Rafael J. Wysocki" <rafael@kernel.org>
Date: 2016-03-04 12:58:56
Also in:
linux-acpi, lkml
On Fri, Mar 4, 2016 at 11:50 AM, Juri Lelli [off-list ref] wrote:
Hi Rafael, On 04/03/16 04:18, Rafael J. Wysocki wrote: [...]quoted
+/** + * cpufreq_update_util - Take a note about CPU utilization changes. + * @time: Current time. + * @util: CPU utilization. + * @max: CPU capacity. + * + * This function is called on every invocation of update_load_avg() on the CPU + * whose utilization is being updated. + * + * It can only be called from RCU-sched read-side critical sections. + */ +void cpufreq_update_util(u64 time, unsigned long util, unsigned long max) +{ + struct freq_update_hook *hook; + +#ifdef CONFIG_LOCKDEP + WARN_ON(debug_locks && !rcu_read_lock_sched_held()); +#endif + + hook = rcu_dereference(*this_cpu_ptr(&cpufreq_freq_update_hook));Small fix. You forgot to change this to rcu_dereference_sched() (you only fixed that in 01/10).
Yup, thanks! I had to propagate the change throughout the queue and forgot about the last step. I'll send an updated patch shortly. Thanks, Rafael