diff mbox series

[thermal:,thermal/next] thermal/drivers/intel: Allow processing of HWP interrupt

Message ID 163119831420.25758.11429959271479471020.tip-bot2@tip-bot2
State New
Headers show
Series [thermal:,thermal/next] thermal/drivers/intel: Allow processing of HWP interrupt | expand

Commit Message

thermal-bot for Julien Panis Sept. 9, 2021, 2:38 p.m. UTC 
The following commit has been merged into the thermal/next branch of thermal:

Commit-ID:     5950fc44a57ace59f21dccfd792250019348a182
Gitweb:        https://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux.git//5950fc44a57ace59f21dccfd792250019348a182
Author:        Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
AuthorDate:    Thu, 19 Aug 2021 19:40:05 -07:00
Committer:     Daniel Lezcano <daniel.lezcano@linaro.org>
CommitterDate: Thu, 09 Sep 2021 16:33:20 +02:00

thermal/drivers/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 <srinivas.pandruvada@linux.intel.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210820024006.2347720-1-srinivas.pandruvada@linux.intel.com
---
 drivers/thermal/intel/therm_throt.c       | 7 ++++++-
 drivers/thermal/intel/thermal_interrupt.h | 3 +++
 2 files changed, 9 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/thermal/intel/therm_throt.c b/drivers/thermal/intel/therm_throt.c
index 99abdc0..dab7e8f 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 53f427b..01e7bed 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 */