Merge tag 'thermal-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull thermal control updates from Rafael Wysocki:
 "These are thermal core changes, including the addition of support for
  temperature thresholds that can be set from user space, fixes related
  to thermal zone initialization, suspend/resume and exit, locking
  rework and rearrangement of the code handling thermal zone temperature
  updates.

  Specifics:

   - Add support for thermal thresholds that can be added and removed
     from user space via netlink along with a related library update
     (Daniel Lezcano)

   - Fix thermal zone initialization, suspend/resume and exit
     synchronization issues (Rafael Wysocki)

   - Rearrange locking in the thermal core to use guards (Rafael
     Wysocki)

   - Make the code handling thermal zone temperature updates use sorted
     lists of trip points to reduce the number of trip points table
     walks in the thermal core (Rafael Wysocki)

   - Fix and clean up the thermal testing facility code (Rafael Wysocki)

   - Fix a Power Allocator thermal governor issue (ZhengShaobo)"

* tag 'thermal-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (45 commits)
  thermal: testing: Initialize some variables annoteded with _free()
  thermal: testing: Use DEFINE_FREE() and __free() to simplify code
  thermal: testing: Simplify tt_get_tt_zone()
  thermal: gov_power_allocator: Granted power set to max when nobody request power
  thermal: core: Relocate thermal zone initialization routine
  thermal: core: Use trip lists for trip crossing detection
  thermal: core: Eliminate thermal_zone_trip_down()
  thermal: core: Relocate functions that update trip points
  thermal: core: Move some trip processing to thermal_trip_crossed()
  thermal: core: Pass trip descriptor to thermal_trip_crossed()
  thermal: core: Rearrange __thermal_zone_device_update()
  thermal: core: Prepare for moving trips between sorted lists
  thermal: core: Rename trip list node in struct thermal_trip_desc
  thermal: core: Build sorted lists instead of sorting them later
  thermal/lib: Fix memory leak on error in thermal_genl_auto()
  thermal: thresholds: Fix thermal lock annotation issue
  tools/thermal/thermal-engine: Take into account the thresholds API
  tools/lib/thermal: Add the threshold netlink ABI
  tools/lib/thermal: Make more generic the command encoding function
  thermal: netlink: Add the commands and the events for the thresholds
  ...

2 files changed, 28 insertions, 7 deletions

diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 25ea8fe2313e..754802478b96 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -56,6 +56,9 @@ enum thermal_notify_event {
 	THERMAL_TZ_UNBIND_CDEV, /* Cooling dev is unbind from the thermal zone */
 	THERMAL_INSTANCE_WEIGHT_CHANGED, /* Thermal instance weight changed */
 	THERMAL_TZ_RESUME, /* Thermal zone is resuming after system sleep */
+	THERMAL_TZ_ADD_THRESHOLD, /* Threshold added */
+	THERMAL_TZ_DEL_THRESHOLD, /* Threshold deleted */
+	THERMAL_TZ_FLUSH_THRESHOLDS, /* All thresholds deleted */
 };
 
 /**
@@ -137,6 +140,9 @@ struct thermal_cooling_device {
 #endif
 };
 
+DEFINE_GUARD(cooling_dev, struct thermal_cooling_device *, mutex_lock(&_T->lock),
+	     mutex_unlock(&_T->lock))
+
 /* Structure to define Thermal Zone parameters */
 struct thermal_zone_params {
 	const char *governor_name;
diff --git a/include/uapi/linux/thermal.h b/include/uapi/linux/thermal.h
index fc78bf3aead7..ba8604bdf206 100644
--- a/include/uapi/linux/thermal.h
+++ b/include/uapi/linux/thermal.h
@@ -3,6 +3,8 @@
 #define _UAPI_LINUX_THERMAL_H
 
 #define THERMAL_NAME_LENGTH	20
+#define THERMAL_THRESHOLD_WAY_UP	BIT(0)
+#define THERMAL_THRESHOLD_WAY_DOWN	BIT(1)
 
 enum thermal_device_mode {
 	THERMAL_DEVICE_DISABLED = 0,
@@ -18,7 +20,7 @@ enum thermal_trip_type {
 
 /* Adding event notification support elements */
 #define THERMAL_GENL_FAMILY_NAME		"thermal"
-#define THERMAL_GENL_VERSION			0x01
+#define THERMAL_GENL_VERSION			0x02
 #define THERMAL_GENL_SAMPLING_GROUP_NAME	"sampling"
 #define THERMAL_GENL_EVENT_GROUP_NAME		"event"
 
@@ -28,6 +30,7 @@ enum thermal_genl_attr {
 	THERMAL_GENL_ATTR_TZ,
 	THERMAL_GENL_ATTR_TZ_ID,
 	THERMAL_GENL_ATTR_TZ_TEMP,
+	THERMAL_GENL_ATTR_TZ_PREV_TEMP,
 	THERMAL_GENL_ATTR_TZ_TRIP,
 	THERMAL_GENL_ATTR_TZ_TRIP_ID,
 	THERMAL_GENL_ATTR_TZ_TRIP_TYPE,
@@ -48,6 +51,9 @@ enum thermal_genl_attr {
 	THERMAL_GENL_ATTR_CPU_CAPABILITY_ID,
 	THERMAL_GENL_ATTR_CPU_CAPABILITY_PERFORMANCE,
 	THERMAL_GENL_ATTR_CPU_CAPABILITY_EFFICIENCY,
+	THERMAL_GENL_ATTR_THRESHOLD,
+	THERMAL_GENL_ATTR_THRESHOLD_TEMP,
+	THERMAL_GENL_ATTR_THRESHOLD_DIRECTION,
 	__THERMAL_GENL_ATTR_MAX,
 };
 #define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1)
@@ -75,6 +81,11 @@ enum thermal_genl_event {
 	THERMAL_GENL_EVENT_CDEV_STATE_UPDATE,	/* Cdev state updated */
 	THERMAL_GENL_EVENT_TZ_GOV_CHANGE,	/* Governor policy changed  */
 	THERMAL_GENL_EVENT_CPU_CAPABILITY_CHANGE,	/* CPU capability changed */
+	THERMAL_GENL_EVENT_THRESHOLD_ADD,	/* A thresold has been added */
+	THERMAL_GENL_EVENT_THRESHOLD_DELETE,	/* A thresold has been deleted */
+	THERMAL_GENL_EVENT_THRESHOLD_FLUSH,	/* All thresolds have been deleted */
+	THERMAL_GENL_EVENT_THRESHOLD_UP,	/* A thresold has been crossed the way up */
+	THERMAL_GENL_EVENT_THRESHOLD_DOWN,	/* A thresold has been crossed the way down */
 	__THERMAL_GENL_EVENT_MAX,
 };
 #define THERMAL_GENL_EVENT_MAX (__THERMAL_GENL_EVENT_MAX - 1)
@@ -82,12 +93,16 @@ enum thermal_genl_event {
 /* Commands supported by the thermal_genl_family */
 enum thermal_genl_cmd {
 	THERMAL_GENL_CMD_UNSPEC,
-	THERMAL_GENL_CMD_TZ_GET_ID,	/* List of thermal zones id */
-	THERMAL_GENL_CMD_TZ_GET_TRIP,	/* List of thermal trips */
-	THERMAL_GENL_CMD_TZ_GET_TEMP,	/* Get the thermal zone temperature */
-	THERMAL_GENL_CMD_TZ_GET_GOV,	/* Get the thermal zone governor */
-	THERMAL_GENL_CMD_TZ_GET_MODE,	/* Get the thermal zone mode */
-	THERMAL_GENL_CMD_CDEV_GET,	/* List of cdev id */
+	THERMAL_GENL_CMD_TZ_GET_ID,		/* List of thermal zones id */
+	THERMAL_GENL_CMD_TZ_GET_TRIP,		/* List of thermal trips */
+	THERMAL_GENL_CMD_TZ_GET_TEMP,		/* Get the thermal zone temperature */
+	THERMAL_GENL_CMD_TZ_GET_GOV,		/* Get the thermal zone governor */
+	THERMAL_GENL_CMD_TZ_GET_MODE,		/* Get the thermal zone mode */
+	THERMAL_GENL_CMD_CDEV_GET,		/* List of cdev id */
+	THERMAL_GENL_CMD_THRESHOLD_GET,		/* List of thresholds */
+	THERMAL_GENL_CMD_THRESHOLD_ADD,		/* Add a threshold */
+	THERMAL_GENL_CMD_THRESHOLD_DELETE,	/* Delete a threshold */
+	THERMAL_GENL_CMD_THRESHOLD_FLUSH,	/* Flush all the thresholds */
 	__THERMAL_GENL_CMD_MAX,
 };
 #define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1)