ANDROID: thermal: Add vendor hook to check power range

For SoC's skin temperature, we have to use more stringent temperature
control to make IPA can monitor and mitigate temperature control earlier
and faster, so add it to meet platform thermal requirement.

Bug: 211564753

Signed-off-by: Jeson Gao <jeson.gao@unisoc.com>
Signed-off-by: Di Shen <di.shen@unisoc.com>
Change-Id: Iaef87287eef93d6fdbc3c58c93f70c1525e38296
(cherry picked from commit 6709f52325)

drivers/android/vendor_hooks.c

@@ -262,3 +262,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_rwsem_init);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_rwsem_wake);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_rwsem_write_finished);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alter_rwsem_list_add);
+EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_thermal_power_cap);

drivers/thermal/gov_power_allocator.c

@@ -470,6 +470,7 @@ static int allocate_power(struct thermal_zone_device *tz,
 	}
 
 	power_range = pid_controller(tz, control_temp, max_allocatable_power);
+	trace_android_vh_thermal_power_cap(&power_range);
 
 	divvy_up_power(weighted_req_power, max_power, num_actors,
 		       total_weighted_req_power, power_range, granted_power,

include/trace/hooks/thermal.h

@@ -23,6 +23,9 @@ DECLARE_HOOK(android_vh_enable_thermal_power_throttle,
 	TP_PROTO(int *enable),
 	TP_ARGS(enable));
 
+DECLARE_HOOK(android_vh_thermal_power_cap,
+	TP_PROTO(u32 *power_range),
+	TP_ARGS(power_range));
 #endif /* _TRACE_HOOK_THERMAL_H */
 /* This part must be outside protection */
 #include <trace/define_trace.h>