From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: rui.zhang@intel.com
Cc: amit.kucheria@verdurent.com, srinivas.pandruvada@linux.intel.com,
arnd@arndb.de, rkumbako@codeaurora.org, ilina@codeaurora.org,
linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH 1/4] thermal: core: Add helpers to browse the cdev, tz and governor list
Date: Fri, 15 May 2020 16:10:30 +0200 [thread overview]
Message-ID: <20200515141034.19154-1-daniel.lezcano@linaro.org> (raw)
The cdev, tz and governor list, as well as their respective locks are
statically defined in the thermal_core.c file.
In order to give a sane access to these list, like browsing all the
thermal zones or all the cooling devices, let's define a set of
helpers where we pass a callback as a parameter to be called for each
thermal entity.
We keep the self-encapsulation and ensure the locks are correctly
taken when looking at the list.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
drivers/thermal/thermal_core.c | 51 ++++++++++++++++++++++++++++++++++
drivers/thermal/thermal_core.h | 9 ++++++
2 files changed, 60 insertions(+)
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index a6b8c0240656..54208b6deb42 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -638,6 +638,57 @@ void thermal_zone_device_rebind_exception(struct thermal_zone_device *tz,
mutex_unlock(&thermal_list_lock);
}
+int for_each_thermal_governor(int (*cb)(struct thermal_governor *, void *),
+ void *data)
+{
+ struct thermal_governor *gov;
+ int ret = 0;
+
+ mutex_lock(&thermal_governor_lock);
+ list_for_each_entry(gov, &thermal_governor_list, governor_list) {
+ ret = cb(gov, data);
+ if (ret)
+ break;
+ }
+ mutex_unlock(&thermal_governor_lock);
+
+ return ret;
+}
+
+int for_each_thermal_cooling_device(int (*cb)(struct thermal_cooling_device *,
+ void *), void *data)
+{
+ struct thermal_cooling_device *cdev;
+ int ret = 0;
+
+ mutex_lock(&thermal_list_lock);
+ list_for_each_entry(cdev, &thermal_cdev_list, node) {
+ ret = cb(cdev, data);
+ if (ret)
+ break;
+ }
+ mutex_unlock(&thermal_list_lock);
+
+ return ret;
+}
+
+int for_each_thermal_zone(int (*cb)(struct thermal_zone_device *, void *),
+ void *data)
+{
+ struct thermal_zone_device *tz;
+ int ret = 0;
+
+ mutex_lock(&thermal_list_lock);
+ list_for_each_entry(tz, &thermal_tz_list, node) {
+ ret = cb(tz, data);
+ if (ret)
+ break;
+ }
+ mutex_unlock(&thermal_list_lock);
+
+ return ret;
+}
+
void thermal_zone_device_unbind_exception(struct thermal_zone_device *tz,
const char *cdev_type, size_t size)
{
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index 4e271016b7a9..bb8f8aee79eb 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -41,6 +41,15 @@ extern struct thermal_governor *__governor_thermal_table_end[];
__governor < __governor_thermal_table_end; \
__governor++)
+int for_each_thermal_zone(int (*cb)(struct thermal_zone_device *, void *),
+ void *);
+
+int for_each_thermal_cooling_device(int (*cb)(struct thermal_cooling_device *,
+ void *), void *);
+
+int for_each_thermal_governor(int (*cb)(struct thermal_governor *, void *),
+ void *thermal_governor);
+
struct thermal_attr {
struct device_attribute attr;
char name[THERMAL_NAME_LENGTH];
--
2.17.1
next reply other threads:[~2020-05-15 14:11 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-15 14:10 Daniel Lezcano [this message]
2020-05-15 14:10 ` [PATCH 2/4] thermal: core: Get thermal zone by id Daniel Lezcano
2020-05-15 14:10 ` [PATCH 3/4] thermal: core: Remove old uapi generic netlink Daniel Lezcano
2020-05-15 14:10 ` [PATCH 4/4] thermal: core: genetlink support for events/cmd/sampling Daniel Lezcano
2020-05-15 14:42 ` Srinivas Pandruvada
2020-05-15 14:43 ` Srinivas Pandruvada
2020-05-15 15:09 ` Daniel Lezcano
2020-05-16 12:55 ` [RFC PATCH] thermal: core: thermal_genl_sampling_temp() can be static kbuild test robot
2020-05-19 18:11 ` [PATCH 4/4] thermal: core: genetlink support for events/cmd/sampling kbuild test robot
2020-05-27 22:04 ` Ram Chandrasekar
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