Re: [PATCH v2 1/10] cpufreq: Reduce cpufreq_update_util() overhead a bit
From: Peter Zijlstra <peterz@infradead.org>
Date: 2016-03-09 15:29:51
Also in:
linux-acpi, lkml
From: Peter Zijlstra <peterz@infradead.org>
Date: 2016-03-09 15:29:51
Also in:
linux-acpi, lkml
On Wed, Mar 09, 2016 at 03:17:48PM +0100, Rafael J. Wysocki wrote:
quoted
That said, how about the below? It avoids a function call.That is fine by me. What about taking it a bit further, though, and moving the definition of cpufreq_update_util_data to somewhere under kernel/sched/ (like kernel/sched/cpufreq.c maybe)? Then, the whole static inline void cpufreq_update_util() definition can go into kernel/sched/sched.h (it doesn't have to be visible anywhere beyond kernel/sched/) and the only thing that needs to be exported to cpufreq will be a helper (or two), to set/clear the cpufreq_update_util_data pointers. I'll try to cut a patch doing that later today for illustration.
Right, that's a blend with your second patch. Sure.