From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Mon, 27 Mar 2017 22:10:47 +0000 (+0200)
Subject: cpufreq: intel_pstate: Set HWP sampling interval once
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7aec5b50e97dd3e2e6ad8a87ccfd62ba8f49a105;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

cpufreq: intel_pstate: Set HWP sampling interval once

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>
---

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 5585a2d101a7..b631ab02f170 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -1911,8 +1911,6 @@ static int intel_pstate_init_cpu(unsigned int cpunum)
 			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 {