@@ -9,6 +9,7 @@
#include <linux/module.h>
#include <linux/notifier.h>
#include <linux/kernel.h>
+#include <net/sock.h>
#include <net/genetlink.h>
#include <uapi/linux/thermal.h>
@@ -49,12 +50,19 @@ static const struct nla_policy thermal_genl_policy[THERMAL_GENL_ATTR_MAX + 1] =
[THERMAL_GENL_ATTR_CPU_CAPABILITY_ID] = { .type = NLA_U32 },
[THERMAL_GENL_ATTR_CPU_CAPABILITY_PERFORMANCE] = { .type = NLA_U32 },
[THERMAL_GENL_ATTR_CPU_CAPABILITY_EFFICIENCY] = { .type = NLA_U32 },
+
+ /* Thresholds */
+ [THERMAL_GENL_ATTR_THRESHOLD] = { .type = NLA_NESTED },
+ [THERMAL_GENL_ATTR_THRESHOLD_TEMP] = { .type = NLA_U32 },
+ [THERMAL_GENL_ATTR_THRESHOLD_WAY] = { .type = NLA_U32 },
+ [THERMAL_GENL_ATTR_THRESHOLD_PID] = { .type = NLA_U32 },
};
struct param {
struct nlattr **attrs;
struct sk_buff *msg;
const char *name;
+ pid_t pid;
int tz_id;
int cdev_id;
int trip_id;
@@ -62,6 +70,8 @@ struct param {
int trip_type;
int trip_hyst;
int temp;
+ int last_temp;
+ int direction;
int cdev_state;
int cdev_max_state;
struct thermal_genl_cpu_caps *cpu_capabilities;
@@ -234,6 +244,36 @@ static int thermal_genl_event_cpu_capability_change(struct param *p)
return -EMSGSIZE;
}
+static int thermal_genl_event_threshold_add(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_THRESHOLD_TEMP, p->temp) ||
+ nla_put_u32(p->msg, THERMAL_GENL_ATTR_THRESHOLD_WAY, p->direction) ||
+ nla_put_u32(p->msg, THERMAL_GENL_ATTR_THRESHOLD_PID, p->pid))
+ return -EMSGSIZE;
+
+ return 0;
+}
+
+static int thermal_genl_event_threshold_flush(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_THRESHOLD_PID, p->pid))
+ return -EMSGSIZE;
+
+ return 0;
+}
+
+static int thermal_genl_event_threshold_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_LAST_TEMP, p->last_temp) ||
+ nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_TEMP, p->temp))
+ return -EMSGSIZE;
+
+ return 0;
+}
+
int thermal_genl_event_tz_delete(struct param *p)
__attribute__((alias("thermal_genl_event_tz")));
@@ -246,6 +286,12 @@ int thermal_genl_event_tz_disable(struct param *p)
int thermal_genl_event_tz_trip_down(struct param *p)
__attribute__((alias("thermal_genl_event_tz_trip_up")));
+int thermal_genl_event_threshold_delete(struct param *p)
+ __attribute__((alias("thermal_genl_event_threshold_add")));
+
+int thermal_genl_event_threshold_down(struct param *p)
+ __attribute__((alias("thermal_genl_event_threshold_up")));
+
static cb_t event_cb[] = {
[THERMAL_GENL_EVENT_TZ_CREATE] = thermal_genl_event_tz_create,
[THERMAL_GENL_EVENT_TZ_DELETE] = thermal_genl_event_tz_delete,
@@ -259,6 +305,11 @@ static cb_t event_cb[] = {
[THERMAL_GENL_EVENT_CDEV_STATE_UPDATE] = thermal_genl_event_cdev_state_update,
[THERMAL_GENL_EVENT_TZ_GOV_CHANGE] = thermal_genl_event_gov_change,
[THERMAL_GENL_EVENT_CPU_CAPABILITY_CHANGE] = thermal_genl_event_cpu_capability_change,
+ [THERMAL_GENL_EVENT_THRESHOLD_ADD] = thermal_genl_event_threshold_add,
+ [THERMAL_GENL_EVENT_THRESHOLD_DELETE] = thermal_genl_event_threshold_delete,
+ [THERMAL_GENL_EVENT_THRESHOLD_FLUSH] = thermal_genl_event_threshold_flush,
+ [THERMAL_GENL_EVENT_THRESHOLD_DOWN] = thermal_genl_event_threshold_down,
+ [THERMAL_GENL_EVENT_THRESHOLD_UP] = thermal_genl_event_threshold_up,
};
/*
@@ -401,6 +452,43 @@ int thermal_genl_cpu_capability_event(int count,
}
EXPORT_SYMBOL_GPL(thermal_genl_cpu_capability_event);
+int thermal_notify_threshold_add(const struct thermal_zone_device *tz,
+ int temperature, int direction, int pid)
+{
+ struct param p = { .tz_id = tz->id, .temp = temperature, .direction = direction, .pid = pid };
+
+ return thermal_genl_send_event(THERMAL_GENL_EVENT_THRESHOLD_ADD, &p);
+}
+
+int thermal_notify_threshold_delete(const struct thermal_zone_device *tz,
+ int temperature, int direction, int pid)
+{
+ struct param p = { .tz_id = tz->id, .temp = temperature, .direction = direction, .pid = pid };
+
+ return thermal_genl_send_event(THERMAL_GENL_EVENT_THRESHOLD_DELETE, &p);
+}
+
+int thermal_notify_threshold_flush(const struct thermal_zone_device *tz, int pid)
+{
+ struct param p = { .tz_id = tz->id, .pid = pid };
+
+ return thermal_genl_send_event(THERMAL_GENL_EVENT_THRESHOLD_FLUSH, &p);
+}
+
+int thermal_notify_threshold_down(const struct thermal_zone_device *tz)
+{
+ struct param p = { .tz_id = tz->id, .temp = tz->temperature, .last_temp = tz->last_temperature };
+
+ return thermal_genl_send_event(THERMAL_GENL_EVENT_THRESHOLD_DOWN, &p);
+}
+
+int thermal_notify_threshold_up(const struct thermal_zone_device *tz)
+{
+ struct param p = { .tz_id = tz->id, .temp = tz->temperature, .last_temp = tz->last_temperature };
+
+ return thermal_genl_send_event(THERMAL_GENL_EVENT_THRESHOLD_UP, &p);
+}
+
/*************************** Command encoding ********************************/
static int __thermal_genl_cmd_tz_get_id(struct thermal_zone_device *tz,
@@ -575,12 +663,130 @@ static int thermal_genl_cmd_cdev_get(struct param *p)
return ret;
}
+static int __thermal_genl_cmd_threshold_get(struct user_threshold *threshold, void *arg)
+{
+ struct sk_buff *msg = arg;
+
+ if (nla_put_u32(msg, THERMAL_GENL_ATTR_THRESHOLD_TEMP, threshold->temperature) ||
+ nla_put_u32(msg, THERMAL_GENL_ATTR_THRESHOLD_WAY, threshold->direction))
+ return -1;
+
+ return 0;
+}
+
+static int thermal_genl_cmd_threshold_get(struct param *p)
+{
+ struct thermal_zone_device *tz;
+ struct sk_buff *msg = p->msg;
+ struct nlattr *start_trip;
+ int id, ret;
+
+ if (!p->attrs[THERMAL_GENL_ATTR_TZ_ID])
+ return -EINVAL;
+
+ id = nla_get_u32(p->attrs[THERMAL_GENL_ATTR_TZ_ID]);
+
+ tz = thermal_zone_get_by_id(id);
+ if (!tz)
+ return -EINVAL;
+
+ start_trip = nla_nest_start(msg, THERMAL_GENL_ATTR_THRESHOLD);
+ if (!start_trip)
+ return -EMSGSIZE;
+
+ mutex_lock(&tz->lock);
+ ret = thermal_thresholds_for_each(tz, __thermal_genl_cmd_threshold_get, msg);
+ mutex_unlock(&tz->lock);
+
+ if (ret)
+ return -EMSGSIZE;
+
+ nla_nest_end(msg, start_trip);
+
+ return 0;
+}
+
+static int thermal_genl_cmd_threshold_add(struct param *p)
+{
+ struct thermal_zone_device *tz;
+ int id, temp, direction, ret = 0;
+
+ if (!p->attrs[THERMAL_GENL_ATTR_TZ_ID] ||
+ !p->attrs[THERMAL_GENL_ATTR_THRESHOLD_TEMP] ||
+ !p->attrs[THERMAL_GENL_ATTR_THRESHOLD_WAY])
+ return -EINVAL;
+
+ id = nla_get_u32(p->attrs[THERMAL_GENL_ATTR_TZ_ID]);
+ temp = nla_get_u32(p->attrs[THERMAL_GENL_ATTR_THRESHOLD_TEMP]);
+ direction = nla_get_u32(p->attrs[THERMAL_GENL_ATTR_THRESHOLD_WAY]);
+
+ tz = thermal_zone_get_by_id(id);
+ if (!tz)
+ return -EINVAL;
+
+ mutex_lock(&tz->lock);
+ ret = thermal_thresholds_add(tz, temp, direction, p->pid);
+ mutex_unlock(&tz->lock);
+
+ return ret;
+}
+
+static int thermal_genl_cmd_threshold_delete(struct param *p)
+{
+ struct thermal_zone_device *tz;
+ int id, temp, direction, ret = 0;
+
+ if (!p->attrs[THERMAL_GENL_ATTR_TZ_ID] ||
+ !p->attrs[THERMAL_GENL_ATTR_THRESHOLD_TEMP] ||
+ !p->attrs[THERMAL_GENL_ATTR_THRESHOLD_WAY])
+ return -EINVAL;
+
+ id = nla_get_u32(p->attrs[THERMAL_GENL_ATTR_TZ_ID]);
+ temp = nla_get_u32(p->attrs[THERMAL_GENL_ATTR_THRESHOLD_TEMP]);
+ direction = nla_get_u32(p->attrs[THERMAL_GENL_ATTR_THRESHOLD_WAY]);
+
+ tz = thermal_zone_get_by_id(id);
+ if (!tz)
+ return -EINVAL;
+
+ mutex_lock(&tz->lock);
+ ret = thermal_thresholds_delete(tz, temp, direction, p->pid);
+ mutex_unlock(&tz->lock);
+
+ return ret;
+}
+
+static int thermal_genl_cmd_threshold_flush(struct param *p)
+{
+ struct thermal_zone_device *tz;
+ int id;
+
+ if (!p->attrs[THERMAL_GENL_ATTR_TZ_ID])
+ return -EINVAL;
+
+ id = nla_get_u32(p->attrs[THERMAL_GENL_ATTR_TZ_ID]);
+
+ tz = thermal_zone_get_by_id(id);
+ if (!tz)
+ return -EINVAL;
+
+ mutex_lock(&tz->lock);
+ thermal_thresholds_flush(tz, p->pid);
+ mutex_unlock(&tz->lock);
+
+ return 0;
+}
+
static cb_t cmd_cb[] = {
- [THERMAL_GENL_CMD_TZ_GET_ID] = thermal_genl_cmd_tz_get_id,
- [THERMAL_GENL_CMD_TZ_GET_TRIP] = thermal_genl_cmd_tz_get_trip,
- [THERMAL_GENL_CMD_TZ_GET_TEMP] = thermal_genl_cmd_tz_get_temp,
- [THERMAL_GENL_CMD_TZ_GET_GOV] = thermal_genl_cmd_tz_get_gov,
- [THERMAL_GENL_CMD_CDEV_GET] = thermal_genl_cmd_cdev_get,
+ [THERMAL_GENL_CMD_TZ_GET_ID] = thermal_genl_cmd_tz_get_id,
+ [THERMAL_GENL_CMD_TZ_GET_TRIP] = thermal_genl_cmd_tz_get_trip,
+ [THERMAL_GENL_CMD_TZ_GET_TEMP] = thermal_genl_cmd_tz_get_temp,
+ [THERMAL_GENL_CMD_TZ_GET_GOV] = thermal_genl_cmd_tz_get_gov,
+ [THERMAL_GENL_CMD_CDEV_GET] = thermal_genl_cmd_cdev_get,
+ [THERMAL_GENL_CMD_THRESHOLD_GET] = thermal_genl_cmd_threshold_get,
+ [THERMAL_GENL_CMD_THRESHOLD_ADD] = thermal_genl_cmd_threshold_add,
+ [THERMAL_GENL_CMD_THRESHOLD_DELETE] = thermal_genl_cmd_threshold_delete,
+ [THERMAL_GENL_CMD_THRESHOLD_FLUSH] = thermal_genl_cmd_threshold_flush,
};
static int thermal_genl_cmd_dumpit(struct sk_buff *skb,
@@ -623,6 +829,7 @@ static int thermal_genl_cmd_doit(struct sk_buff *skb,
if (!msg)
return -ENOMEM;
p.msg = msg;
+ p.pid = task_tgid_vnr(current);
hdr = genlmsg_put_reply(msg, info, &thermal_genl_family, 0, cmd);
if (!hdr)
@@ -691,6 +898,26 @@ static const struct genl_small_ops thermal_genl_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.dumpit = thermal_genl_cmd_dumpit,
},
+ {
+ .cmd = THERMAL_GENL_CMD_THRESHOLD_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = thermal_genl_cmd_doit,
+ },
+ {
+ .cmd = THERMAL_GENL_CMD_THRESHOLD_ADD,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = thermal_genl_cmd_doit,
+ },
+ {
+ .cmd = THERMAL_GENL_CMD_THRESHOLD_DELETE,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = thermal_genl_cmd_doit,
+ },
+ {
+ .cmd = THERMAL_GENL_CMD_THRESHOLD_FLUSH,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = thermal_genl_cmd_doit,
+ },
};
static struct genl_family thermal_genl_family __ro_after_init = {
@@ -703,7 +930,7 @@ static struct genl_family thermal_genl_family __ro_after_init = {
.unbind = thermal_genl_unbind,
.small_ops = thermal_genl_ops,
.n_small_ops = ARRAY_SIZE(thermal_genl_ops),
- .resv_start_op = THERMAL_GENL_CMD_CDEV_GET + 1,
+ .resv_start_op = __THERMAL_GENL_CMD_MAX,
.mcgrps = thermal_genl_mcgrps,
.n_mcgrps = ARRAY_SIZE(thermal_genl_mcgrps),
};
@@ -53,6 +53,13 @@ int thermal_notify_tz_gov_change(const struct thermal_zone_device *tz,
int thermal_genl_sampling_temp(int id, int temp);
int thermal_genl_cpu_capability_event(int count,
struct thermal_genl_cpu_caps *caps);
+int thermal_notify_threshold_add(const struct thermal_zone_device *tz,
+ int temperature, int direction, pid_t pid);
+int thermal_notify_threshold_delete(const struct thermal_zone_device *tz,
+ int temperature, int direction, pid_t pid);
+int thermal_notify_threshold_flush(const struct thermal_zone_device *tz, pid_t pid);
+int thermal_notify_threshold_down(const struct thermal_zone_device *tz);
+int thermal_notify_threshold_up(const struct thermal_zone_device *tz);
#else
static inline int thermal_netlink_init(void)
{
@@ -20,7 +20,7 @@ int thermal_thresholds_init(struct thermal_zone_device *tz)
return 0;
}
-void thermal_thresholds_flush(struct thermal_zone_device *tz)
+void thermal_thresholds_flush(struct thermal_zone_device *tz, pid_t pid)
{
struct list_head *thresholds = &tz->user_thresholds;
struct user_threshold *entry, *tmp;
@@ -32,12 +32,14 @@ void thermal_thresholds_flush(struct thermal_zone_device *tz)
kfree(entry);
}
+ thermal_notify_threshold_flush(tz, pid);
+
__thermal_zone_device_update(tz, THERMAL_TZ_FLUSH_THRESHOLDS);
}
void thermal_thresholds_exit(struct thermal_zone_device *tz)
{
- thermal_thresholds_flush(tz);
+ thermal_thresholds_flush(tz, 0);
}
static int __thermal_thresholds_cmp(void *data,
@@ -122,7 +124,6 @@ void thermal_thresholds_handle(struct thermal_zone_device *tz, int *low, int *hi
int temperature = tz->temperature;
int last_temperature = tz->last_temperature;
- bool notify;
lockdep_assert_held(&tz->lock);
@@ -144,19 +145,19 @@ void thermal_thresholds_handle(struct thermal_zone_device *tz, int *low, int *hi
* - increased : thresholds are crossed the way up
* - decreased : thresholds are crossed the way down
*/
- if (temperature > last_temperature)
- notify = thermal_thresholds_handle_raising(thresholds, temperature,
- last_temperature, low, high);
- else
- notify = thermal_thresholds_handle_dropping(thresholds, temperature,
- last_temperature, low, high);
-
- if (notify)
- pr_debug("A threshold has been crossed the way %s, with a temperature=%d, last_temperature=%d\n",
- temperature > last_temperature ? "up" : "down", temperature, last_temperature);
+ if (temperature > last_temperature) {
+ if (thermal_thresholds_handle_raising(thresholds, temperature,
+ last_temperature, low, high))
+ thermal_notify_threshold_up(tz);
+ } else {
+ if (thermal_thresholds_handle_dropping(thresholds, temperature,
+ last_temperature, low, high))
+ thermal_notify_threshold_down(tz);
+ }
}
-int thermal_thresholds_add(struct thermal_zone_device *tz, int temperature, int direction)
+int thermal_thresholds_add(struct thermal_zone_device *tz,
+ int temperature, int direction, pid_t pid)
{
struct list_head *thresholds = &tz->user_thresholds;
struct user_threshold *t;
@@ -182,12 +183,15 @@ int thermal_thresholds_add(struct thermal_zone_device *tz, int temperature, int
list_sort(NULL, thresholds, __thermal_thresholds_cmp);
}
+ thermal_notify_threshold_add(tz, temperature, direction, pid);
+
__thermal_zone_device_update(tz, THERMAL_TZ_ADD_THRESHOLD);
return 0;
}
-int thermal_thresholds_delete(struct thermal_zone_device *tz, int temperature, int direction)
+int thermal_thresholds_delete(struct thermal_zone_device *tz,
+ int temperature, int direction, pid_t pid)
{
struct list_head *thresholds = &tz->user_thresholds;
struct user_threshold *t;
@@ -205,8 +209,10 @@ int thermal_thresholds_delete(struct thermal_zone_device *tz, int temperature, i
t->direction &= ~direction;
}
- __thermal_zone_device_update(tz, THERMAL_TZ_DEL_THRESHOLD);
+ thermal_notify_threshold_delete(tz, temperature, direction, pid);
+ __thermal_zone_device_update(tz, THERMAL_TZ_DEL_THRESHOLD);
+
return 0;
}
@@ -10,10 +10,10 @@ struct user_threshold {
int thermal_thresholds_init(struct thermal_zone_device *tz);
void thermal_thresholds_exit(struct thermal_zone_device *tz);
-void thermal_thresholds_flush(struct thermal_zone_device *tz);
void thermal_thresholds_handle(struct thermal_zone_device *tz, int *low, int *high);
-int thermal_thresholds_add(struct thermal_zone_device *tz, int temperature, int direction);
-int thermal_thresholds_delete(struct thermal_zone_device *tz, int temperature, int direction);
+void thermal_thresholds_flush(struct thermal_zone_device *tz, pid_t pid);
+int thermal_thresholds_add(struct thermal_zone_device *tz, int temperature, int direction, pid_t pid);
+int thermal_thresholds_delete(struct thermal_zone_device *tz, int temperature, int direction, pid_t pid);
int thermal_thresholds_for_each(struct thermal_zone_device *tz,
int (*cb)(struct user_threshold *, void *arg), void *arg);
#endif
@@ -20,7 +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"
@@ -30,6 +30,7 @@ enum thermal_genl_attr {
THERMAL_GENL_ATTR_TZ,
THERMAL_GENL_ATTR_TZ_ID,
THERMAL_GENL_ATTR_TZ_TEMP,
+ THERMAL_GENL_ATTR_TZ_LAST_TEMP,
THERMAL_GENL_ATTR_TZ_TRIP,
THERMAL_GENL_ATTR_TZ_TRIP_ID,
THERMAL_GENL_ATTR_TZ_TRIP_TYPE,
@@ -50,6 +51,10 @@ 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_WAY,
+ THERMAL_GENL_ATTR_THRESHOLD_PID,
__THERMAL_GENL_ATTR_MAX,
};
#define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1)
@@ -77,6 +82,11 @@ 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)
@@ -84,12 +94,16 @@ 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)
The thresholds exist but there is no notification neither action code related to them yet. These changes implement the netlink for the notifications when the thresholds are crossed, added, deleted or flushed as well as the commands which allows to get the list of the thresholds, flush them, add and delete. As different processes in userspace can interact with the thresholds, the process id responsible of the action (add, delete or flush) will be added in the notification. This way a thermal engine is able to detect if another process is interfering with the thresholds. A process id of zero is the kernel as it is by convention usually. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> --- drivers/thermal/thermal_netlink.c | 239 ++++++++++++++++++++++++++- drivers/thermal/thermal_netlink.h | 7 + drivers/thermal/thermal_thresholds.c | 38 +++-- drivers/thermal/thermal_thresholds.h | 6 +- include/uapi/linux/thermal.h | 28 +++- 5 files changed, 286 insertions(+), 32 deletions(-)