Commit 950809cd authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Rafael J. Wysocki
Browse files

thermal: intel: Allow processing of HWP interrupt 



Add a weak function to process HWP (Hardware P-states) notifications and
move updating HWP_STATUS MSR to this function.

This allows HWP interrupts to be processed by the intel_pstate driver in
HWP mode by overriding the implementation.

Signed-off-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: default avatarZhang Rui <rui.zhang@intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 43dde64b

drivers/thermal/intel/therm_throt.c

+6 −1
Original line number Diff line number Diff line
@@ -569,13 +569,18 @@ static void notify_thresholds(__u64 msr_val) 
		platform_thermal_notify(msr_val);

}



void __weak notify_hwp_interrupt(void)

{

	wrmsrl_safe(MSR_HWP_STATUS, 0);

}



/* Thermal transition interrupt handler */

void intel_thermal_interrupt(void)

{

	__u64 msr_val;



	if (static_cpu_has(X86_FEATURE_HWP))

		wrmsrl_safe(MSR_HWP_STATUS, 0);

		notify_hwp_interrupt();



	rdmsrl(MSR_IA32_THERM_STATUS, msr_val);

drivers/thermal/intel/thermal_interrupt.h

+3 −0
Original line number Diff line number Diff line
@@ -12,4 +12,7 @@ extern int (*platform_thermal_notify)(__u64 msr_val); 
 * callback has rate control */

extern bool (*platform_thermal_package_rate_control)(void);



/* Handle HWP interrupt */

extern void notify_hwp_interrupt(void);



#endif /* _INTEL_THERMAL_INTERRUPT_H */