The slope of the temperature increase or decrease can be high and when
the temperature crosses the trip point, there could be a significant
difference between the trip temperature and the measured temperatures.
That forces the userspace to read the temperature back right after
receiving a trip violation notification.
In order to be efficient, give the temperature which resulted in the
trip violation.
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
---
drivers/thermal/thermal_core.c | 6 ++++--
drivers/thermal/thermal_netlink.c | 11 ++++++-----
drivers/thermal/thermal_netlink.h | 8 ++++----
include/uapi/linux/thermal.h | 2 +-
4 files changed, 15 insertions(+), 12 deletions(-)
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 996c038f83a4..948020ef51b1 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -430,10 +430,12 @@ static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
if (tz->last_temperature != THERMAL_TEMP_INVALID) {
if (tz->last_temperature < trip_temp &&
tz->temperature >= trip_temp)
- thermal_notify_tz_trip_up(tz->id, trip);
+ thermal_notify_tz_trip_up(tz->id, trip,
+ tz->temperature);
if (tz->last_temperature >= trip_temp &&
tz->temperature < (trip_temp - hyst))
- thermal_notify_tz_trip_down(tz->id, trip);
+ thermal_notify_tz_trip_down(tz->id, trip,
+ tz->temperature);
}
if (type == THERMAL_TRIP_CRITICAL || type == THERMAL_TRIP_HOT)
diff --git a/drivers/thermal/thermal_netlink.c b/drivers/thermal/thermal_netlink.c
index 1234dbe95895..a16dd4d5d710 100644
--- a/drivers/thermal/thermal_netlink.c
+++ b/drivers/thermal/thermal_netlink.c
@@ -121,7 +121,8 @@ static int thermal_genl_event_tz(struct param *p)
static int thermal_genl_event_tz_trip_up(struct param *p)
{
if (nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_ID, p->tz_id) ||
- nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_TRIP_ID, p->trip_id))
+ nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_TRIP_ID, p->trip_id) ||
+ nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_TEMP, p->temp))
return -EMSGSIZE;
return 0;
@@ -285,16 +286,16 @@ int thermal_notify_tz_disable(int tz_id)
return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_DISABLE, &p);
}
-int thermal_notify_tz_trip_down(int tz_id, int trip_id)
+int thermal_notify_tz_trip_down(int tz_id, int trip_id, int temp)
{
- struct param p = { .tz_id = tz_id, .trip_id = trip_id };
+ struct param p = { .tz_id = tz_id, .trip_id = trip_id, .temp = temp };
return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_TRIP_DOWN, &p);
}
-int thermal_notify_tz_trip_up(int tz_id, int trip_id)
+int thermal_notify_tz_trip_up(int tz_id, int trip_id, int temp)
{
- struct param p = { .tz_id = tz_id, .trip_id = trip_id };
+ struct param p = { .tz_id = tz_id, .trip_id = trip_id, .temp = temp };
return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_TRIP_UP, &p);
}
diff --git a/drivers/thermal/thermal_netlink.h b/drivers/thermal/thermal_netlink.h
index 828d1dddfa98..e554f76291f4 100644
--- a/drivers/thermal/thermal_netlink.h
+++ b/drivers/thermal/thermal_netlink.h
@@ -11,8 +11,8 @@ int thermal_notify_tz_create(int tz_id, const char *name);
int thermal_notify_tz_delete(int tz_id);
int thermal_notify_tz_enable(int tz_id);
int thermal_notify_tz_disable(int tz_id);
-int thermal_notify_tz_trip_down(int tz_id, int id);
-int thermal_notify_tz_trip_up(int tz_id, int id);
+int thermal_notify_tz_trip_down(int tz_id, int id, int temp);
+int thermal_notify_tz_trip_up(int tz_id, int id, int temp);
int thermal_notify_tz_trip_delete(int tz_id, int id);
int thermal_notify_tz_trip_add(int tz_id, int id, int type,
int temp, int hyst);
@@ -49,12 +49,12 @@ static inline int thermal_notify_tz_disable(int tz_id)
return 0;
}
-static inline int thermal_notify_tz_trip_down(int tz_id, int id)
+static inline int thermal_notify_tz_trip_down(int tz_id, int id, int temp)
{
return 0;
}
-static inline int thermal_notify_tz_trip_up(int tz_id, int id)
+static inline int thermal_notify_tz_trip_up(int tz_id, int id, int temp)
{
return 0;
}
diff --git a/include/uapi/linux/thermal.h b/include/uapi/linux/thermal.h
index c105054cbb57..bf5d9c8ef16f 100644
--- a/include/uapi/linux/thermal.h
+++ b/include/uapi/linux/thermal.h
@@ -18,7 +18,7 @@ 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"
--
2.17.1
