Commit 7f7a516e authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Rafael J. Wysocki

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 <arnd@arndb.de> to solve compile
issue, when CONFIG_ACPI is not defined.
Signed-off-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent dcd2ea41
...@@ -1771,6 +1771,19 @@ static void __init copy_pid_params(struct pstate_adjust_policy *policy) ...@@ -1771,6 +1771,19 @@ static void __init copy_pid_params(struct pstate_adjust_policy *policy)
pid_params.setpoint = policy->setpoint; 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) static void __init copy_cpu_funcs(struct pstate_funcs *funcs)
{ {
pstate_funcs.get_max = funcs->get_max; pstate_funcs.get_max = funcs->get_max;
...@@ -1782,6 +1795,7 @@ static void __init copy_cpu_funcs(struct pstate_funcs *funcs) ...@@ -1782,6 +1795,7 @@ static void __init copy_cpu_funcs(struct pstate_funcs *funcs)
pstate_funcs.get_vid = funcs->get_vid; pstate_funcs.get_vid = funcs->get_vid;
pstate_funcs.get_target_pstate = funcs->get_target_pstate; pstate_funcs.get_target_pstate = funcs->get_target_pstate;
intel_pstate_use_acpi_profile();
} }
#ifdef CONFIG_ACPI #ifdef CONFIG_ACPI
......
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