Messages in this thread Patch in this message | | | From | "Rafael J. Wysocki" <> | Subject | [PATCH 06/16] cpufreq: intel_pstate: Set HWP sampling interval once | Date | Tue, 28 Mar 2017 00:10:47 +0200 |
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From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
In the HWP enabled case pid_params.sample_rate_ns only needs to be updated once, because it is global, so do that when setting hwp_active instead of doing it during the initialization of every CPU.
Moreover, pid_params.sample_rate_ms is never used if HWP is enabled, so do not update it at all then.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> --- drivers/cpufreq/intel_pstate.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
Index: linux-pm/drivers/cpufreq/intel_pstate.c =================================================================== --- linux-pm.orig/drivers/cpufreq/intel_pstate.c +++ linux-pm/drivers/cpufreq/intel_pstate.c @@ -1911,8 +1911,6 @@ static int intel_pstate_init_cpu(unsigne intel_pstate_disable_ee(cpunum); intel_pstate_hwp_enable(cpu); - pid_params.sample_rate_ms = 50; - pid_params.sample_rate_ns = 50 * NSEC_PER_MSEC; } intel_pstate_get_cpu_pstates(cpu); @@ -2563,6 +2561,7 @@ static int __init intel_pstate_init(void } else { hwp_active++; intel_pstate.attr = hwp_cpufreq_attrs; + pid_params.sample_rate_ns = 50 * NSEC_PER_MSEC; goto hwp_cpu_matched; } } else {
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