Re: [PATCH v2 1/10] cpufreq: Reduce cpufreq_update_util() overhead a bit

Peter Zijlstra
2016-03-10T09:19:18Z

On Wed, Mar 09, 2016 at 10:35:02PM +0100, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> Subject: [PATCH] cpufreq: Move scheduler-related code to the sched directory
>
> Create cpufreq.c under kernel/sched/ and move the cpufreq code
> related to the scheduler to that file and to sched.h.
>
> Redefine cpufreq_update_util() as a static inline function to avoid
> function calls at its call sites in the scheduler code (as suggested
> by Peter Zijlstra).
>
> Also move the definition of struct update_util_data and declaration
> of cpufreq_set_update_util_data() from include/linux/cpufreq.h to
> include/linux/sched.h.
>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> ---
> drivers/cpufreq/cpufreq.c | 53 -------------------------------------
> drivers/cpufreq/cpufreq_governor.c | 1
> include/linux/cpufreq.h | 34 -----------------------
> include/linux/sched.h | 9 ++++++
> kernel/sched/Makefile | 1
> kernel/sched/cpufreq.c | 37 +++++++++++++++++++++++++
> kernel/sched/sched.h | 49 +++++++++++++++++++++++++++++++++-
> 7 files changed, 96 insertions(+), 88 deletions(-)

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>