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Commit 7aec5b50 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

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: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent ff35f02e

drivers/cpufreq/intel_pstate.c

+1 −2
Original line number Diff line number Diff line
@@ -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 {