| Message ID | 1478908059-56178-1-git-send-email-srinivas.pandruvada@linux.intel.com (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Delegated to: | Rafael Wysocki |
| Headers | show |
On Friday, November 11, 2016 03:47:39 PM Srinivas Pandruvada wrote: > Use get_target_pstate_use_cpu_load() to calculate target P-State for > devices, which uses preferred power management profile as PM_MOBILE > in ACPI FADT. > 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. > > Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> > --- > 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 eb76073..8f683e2 100644 > --- a/drivers/cpufreq/intel_pstate.c > +++ b/drivers/cpufreq/intel_pstate.c > @@ -1828,6 +1828,19 @@ 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(struct pstate_funcs *funcs) > +{ > +} > +#endif > + > static void __init copy_cpu_funcs(struct pstate_funcs *funcs) > { > pstate_funcs.get_max = funcs->get_max; > @@ -1839,6 +1852,7 @@ 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 Applied. Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-pm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index eb76073..8f683e2 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -1828,6 +1828,19 @@ 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(struct pstate_funcs *funcs) +{ +} +#endif + static void __init copy_cpu_funcs(struct pstate_funcs *funcs) { pstate_funcs.get_max = funcs->get_max; @@ -1839,6 +1852,7 @@ 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
Use get_target_pstate_use_cpu_load() to calculate target P-State for devices, which uses preferred power management profile as PM_MOBILE in ACPI FADT. 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. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> --- drivers/cpufreq/intel_pstate.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)