From 950809cd6ca2ff2e2bb9d826c4d9e35d134d7de0 Mon Sep 17 00:00:00 2001 From: Srinivas Pandruvada Date: Thu, 19 Aug 2021 19:40:05 -0700 Subject: 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: Srinivas Pandruvada Acked-by: Zhang Rui Signed-off-by: Rafael J. Wysocki --- drivers/thermal/intel/therm_throt.c | 7 ++++++- drivers/thermal/intel/thermal_interrupt.h | 3 +++ 2 files changed, 9 insertions(+), 1 deletion(-) (limited to 'drivers/thermal') diff --git a/drivers/thermal/intel/therm_throt.c b/drivers/thermal/intel/therm_throt.c index 99abdc03c44c..dab7e8fb1059 100644 --- a/drivers/thermal/intel/therm_throt.c +++ b/drivers/thermal/intel/therm_throt.c @@ -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); diff --git a/drivers/thermal/intel/thermal_interrupt.h b/drivers/thermal/intel/thermal_interrupt.h index 53f427bb58dc..01e7bed2ffc7 100644 --- a/drivers/thermal/intel/thermal_interrupt.h +++ b/drivers/thermal/intel/thermal_interrupt.h @@ -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 */ -- cgit