From 7f7a516ee30a931fa2d257b39f5ef7b9196c56fc Mon Sep 17 00:00:00 2001 From: Srinivas Pandruvada Date: Mon, 14 Nov 2016 10:31:11 -0800 Subject: [PATCH] cpufreq: intel_pstate: Use CPU load based algorithm for PM_MOBILE Use get_target_pstate_use_cpu_load() to calculate target P-State for devices, with the preferred power management profile in ACPI FADT set to PM_MOBILE. This may help in resolving some thermal issues caused by low sustained cpu bound workloads. The current algorithm tend to over provision in this case as it doesn't look at the CPU busyness. Also included the fix from Arnd Bergmann to solve compile issue, when CONFIG_ACPI is not defined. Signed-off-by: Srinivas Pandruvada Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/intel_pstate.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 0837175395b9..f07e591c0e1f 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -1771,6 +1771,19 @@ static void __init copy_pid_params(struct pstate_adjust_policy *policy) pid_params.setpoint = policy->setpoint; } +#ifdef CONFIG_ACPI +static void intel_pstate_use_acpi_profile(void) +{ + if (acpi_gbl_FADT.preferred_profile == PM_MOBILE) + pstate_funcs.get_target_pstate = + get_target_pstate_use_cpu_load; +} +#else +static void intel_pstate_use_acpi_profile(void) +{ +} +#endif + static void __init copy_cpu_funcs(struct pstate_funcs *funcs) { pstate_funcs.get_max = funcs->get_max; @@ -1782,6 +1795,7 @@ static void __init copy_cpu_funcs(struct pstate_funcs *funcs) pstate_funcs.get_vid = funcs->get_vid; pstate_funcs.get_target_pstate = funcs->get_target_pstate; + intel_pstate_use_acpi_profile(); } #ifdef CONFIG_ACPI -- 2.20.1