2019-10-21 12:16:07

by Amit Kucheria

[permalink] [raw]
Subject: [PATCH v5 0/6] Initialise thermal framework and cpufreq earlier during boot

Changes since v4:
- Collect Acks
- Pick the US spelling for 'initialis^Hze' consistently.

Changes since v3:
- Init schedutil governor earlier too
- Simplified changes to thermal_init() error path
- Collects Acks

Changes since v2:
- Missed one patch when posting v2. Respinning.

Changes since v1:
- Completely get rid of netlink support in the thermal framework.
- This changes the early init patch to a single line - change to
core_initcall. Changed authorship of patch since it is nothing like the
original. Lina, let me know if you feel otherwise.
- I've tested to make sure that the qcom-cpufreq-hw driver continues to
work correctly as a module so this won't impact Android's GKI plans.
- Collected Acks

Device boot needs to be as fast as possible while keeping under the thermal
envelope. Now that thermal framework is built-in to the kernel, we can
initialize it earlier to enable thermal mitigation during boot.

We also need the cpufreq HW drivers to be initialised earlier to act as the
cooling devices. This series only converts over the qcom-hw driver to
initialize earlier but can be extended to other platforms as well.

Amit Kucheria (6):
thermal: Remove netlink support
thermal: Initialize thermal subsystem earlier
cpufreq: Initialize the governors in core_initcall
cpufreq: Initialize cpufreq-dt driver earlier
clk: qcom: Initialize clock drivers earlier
cpufreq: qcom-hw: Move driver initialization earlier

.../driver-api/thermal/sysfs-api.rst | 26 +----
drivers/clk/qcom/clk-rpmh.c | 2 +-
drivers/clk/qcom/gcc-qcs404.c | 2 +-
drivers/clk/qcom/gcc-sdm845.c | 2 +-
drivers/cpufreq/cpufreq-dt-platdev.c | 2 +-
drivers/cpufreq/cpufreq_conservative.c | 2 +-
drivers/cpufreq/cpufreq_ondemand.c | 2 +-
drivers/cpufreq/cpufreq_performance.c | 2 +-
drivers/cpufreq/cpufreq_powersave.c | 2 +-
drivers/cpufreq/cpufreq_userspace.c | 2 +-
drivers/cpufreq/qcom-cpufreq-hw.c | 2 +-
drivers/thermal/thermal_core.c | 103 +-----------------
include/linux/thermal.h | 11 --
kernel/sched/cpufreq_schedutil.c | 2 +-
14 files changed, 19 insertions(+), 143 deletions(-)

--
2.17.1


2019-10-21 12:16:16

by Amit Kucheria

[permalink] [raw]
Subject: [PATCH v5 1/6] thermal: Remove netlink support

There are no users of netlink messages for thermal inside the kernel.
Remove the code and adjust the documentation.

Signed-off-by: Amit Kucheria <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
---
.../driver-api/thermal/sysfs-api.rst | 26 ++---
drivers/thermal/thermal_core.c | 101 +-----------------
include/linux/thermal.h | 11 --
3 files changed, 7 insertions(+), 131 deletions(-)

diff --git a/Documentation/driver-api/thermal/sysfs-api.rst b/Documentation/driver-api/thermal/sysfs-api.rst
index fab2c9b36d084..b40b1f8391481 100644
--- a/Documentation/driver-api/thermal/sysfs-api.rst
+++ b/Documentation/driver-api/thermal/sysfs-api.rst
@@ -725,24 +725,10 @@ method, the sys I/F structure will be built like this::
|---temp1_input: 37000
|---temp1_crit: 100000

-4. Event Notification
+4. Export Symbol APIs
=====================

-The framework includes a simple notification mechanism, in the form of a
-netlink event. Netlink socket initialization is done during the _init_
-of the framework. Drivers which intend to use the notification mechanism
-just need to call thermal_generate_netlink_event() with two arguments viz
-(originator, event). The originator is a pointer to struct thermal_zone_device
-from where the event has been originated. An integer which represents the
-thermal zone device will be used in the message to identify the zone. The
-event will be one of:{THERMAL_AUX0, THERMAL_AUX1, THERMAL_CRITICAL,
-THERMAL_DEV_FAULT}. Notification can be sent when the current temperature
-crosses any of the configured thresholds.
-
-5. Export Symbol APIs
-=====================
-
-5.1. get_tz_trend
+4.1. get_tz_trend
-----------------

This function returns the trend of a thermal zone, i.e the rate of change
@@ -751,14 +737,14 @@ are supposed to implement the callback. If they don't, the thermal
framework calculated the trend by comparing the previous and the current
temperature values.

-5.2. get_thermal_instance
+4.2. get_thermal_instance
-------------------------

This function returns the thermal_instance corresponding to a given
{thermal_zone, cooling_device, trip_point} combination. Returns NULL
if such an instance does not exist.

-5.3. thermal_notify_framework
+4.3. thermal_notify_framework
-----------------------------

This function handles the trip events from sensor drivers. It starts
@@ -768,14 +754,14 @@ and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
The throttling policy is based on the configured platform data; if no
platform data is provided, this uses the step_wise throttling policy.

-5.4. thermal_cdev_update
+4.4. thermal_cdev_update
------------------------

This function serves as an arbitrator to set the state of a cooling
device. It sets the cooling device to the deepest cooling state if
possible.

-6. thermal_emergency_poweroff
+5. thermal_emergency_poweroff
=============================

On an event of critical trip temperature crossing. Thermal framework
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index d4481cc8958fe..cced0638b686f 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -19,8 +19,6 @@
#include <linux/reboot.h>
#include <linux/string.h>
#include <linux/of.h>
-#include <net/netlink.h>
-#include <net/genetlink.h>
#include <linux/suspend.h>

#define CREATE_TRACE_POINTS
@@ -1464,97 +1462,6 @@ struct thermal_zone_device *thermal_zone_get_zone_by_name(const char *name)
}
EXPORT_SYMBOL_GPL(thermal_zone_get_zone_by_name);

-#ifdef CONFIG_NET
-static const struct genl_multicast_group thermal_event_mcgrps[] = {
- { .name = THERMAL_GENL_MCAST_GROUP_NAME, },
-};
-
-static struct genl_family thermal_event_genl_family __ro_after_init = {
- .module = THIS_MODULE,
- .name = THERMAL_GENL_FAMILY_NAME,
- .version = THERMAL_GENL_VERSION,
- .maxattr = THERMAL_GENL_ATTR_MAX,
- .mcgrps = thermal_event_mcgrps,
- .n_mcgrps = ARRAY_SIZE(thermal_event_mcgrps),
-};
-
-int thermal_generate_netlink_event(struct thermal_zone_device *tz,
- enum events event)
-{
- struct sk_buff *skb;
- struct nlattr *attr;
- struct thermal_genl_event *thermal_event;
- void *msg_header;
- int size;
- int result;
- static unsigned int thermal_event_seqnum;
-
- if (!tz)
- return -EINVAL;
-
- /* allocate memory */
- size = nla_total_size(sizeof(struct thermal_genl_event)) +
- nla_total_size(0);
-
- skb = genlmsg_new(size, GFP_ATOMIC);
- if (!skb)
- return -ENOMEM;
-
- /* add the genetlink message header */
- msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
- &thermal_event_genl_family, 0,
- THERMAL_GENL_CMD_EVENT);
- if (!msg_header) {
- nlmsg_free(skb);
- return -ENOMEM;
- }
-
- /* fill the data */
- attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
- sizeof(struct thermal_genl_event));
-
- if (!attr) {
- nlmsg_free(skb);
- return -EINVAL;
- }
-
- thermal_event = nla_data(attr);
- if (!thermal_event) {
- nlmsg_free(skb);
- return -EINVAL;
- }
-
- memset(thermal_event, 0, sizeof(struct thermal_genl_event));
-
- thermal_event->orig = tz->id;
- thermal_event->event = event;
-
- /* send multicast genetlink message */
- genlmsg_end(skb, msg_header);
-
- result = genlmsg_multicast(&thermal_event_genl_family, skb, 0,
- 0, GFP_ATOMIC);
- if (result)
- dev_err(&tz->device, "Failed to send netlink event:%d", result);
-
- return result;
-}
-EXPORT_SYMBOL_GPL(thermal_generate_netlink_event);
-
-static int __init genetlink_init(void)
-{
- return genl_register_family(&thermal_event_genl_family);
-}
-
-static void genetlink_exit(void)
-{
- genl_unregister_family(&thermal_event_genl_family);
-}
-#else /* !CONFIG_NET */
-static inline int genetlink_init(void) { return 0; }
-static inline void genetlink_exit(void) {}
-#endif /* !CONFIG_NET */
-
static int thermal_pm_notify(struct notifier_block *nb,
unsigned long mode, void *_unused)
{
@@ -1607,13 +1514,9 @@ static int __init thermal_init(void)
if (result)
goto unregister_governors;

- result = genetlink_init();
- if (result)
- goto unregister_class;
-
result = of_parse_thermal_zones();
if (result)
- goto exit_netlink;
+ goto unregister_class;

result = register_pm_notifier(&thermal_pm_nb);
if (result)
@@ -1622,8 +1525,6 @@ static int __init thermal_init(void)

return 0;

-exit_netlink:
- genetlink_exit();
unregister_class:
class_unregister(&thermal_class);
unregister_governors:
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index e45659c759209..d9111aebb97d6 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -544,15 +544,4 @@ static inline void thermal_notify_framework(struct thermal_zone_device *tz,
{ }
#endif /* CONFIG_THERMAL */

-#if defined(CONFIG_NET) && IS_ENABLED(CONFIG_THERMAL)
-extern int thermal_generate_netlink_event(struct thermal_zone_device *tz,
- enum events event);
-#else
-static inline int thermal_generate_netlink_event(struct thermal_zone_device *tz,
- enum events event)
-{
- return 0;
-}
-#endif
-
#endif /* __THERMAL_H__ */
--
2.17.1

2019-10-21 12:16:29

by Amit Kucheria

[permalink] [raw]
Subject: [PATCH v5 2/6] thermal: Initialize thermal subsystem earlier

Now that the thermal framework is built-in, in order to facilitate
thermal mitigation as early as possible in the boot cycle, move the
thermal framework initialization to core_initcall.

Signed-off-by: Amit Kucheria <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
---
drivers/thermal/thermal_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index cced0638b686f..69fcd54f8a83e 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -1537,4 +1537,4 @@ static int __init thermal_init(void)
mutex_destroy(&poweroff_lock);
return result;
}
-fs_initcall(thermal_init);
+core_initcall(thermal_init);
--
2.17.1

2019-10-21 12:16:37

by Amit Kucheria

[permalink] [raw]
Subject: [PATCH v5 3/6] cpufreq: Initialize the governors in core_initcall

Initialize the cpufreq governors earlier to allow for earlier
performance control during the boot process.

Signed-off-by: Amit Kucheria <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
Reviewed-by: Rafael J. Wysocki <[email protected]>
---
drivers/cpufreq/cpufreq_conservative.c | 2 +-
drivers/cpufreq/cpufreq_ondemand.c | 2 +-
drivers/cpufreq/cpufreq_performance.c | 2 +-
drivers/cpufreq/cpufreq_powersave.c | 2 +-
drivers/cpufreq/cpufreq_userspace.c | 2 +-
kernel/sched/cpufreq_schedutil.c | 2 +-
6 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c
index b66e81c06a575..737ff3b9c2c09 100644
--- a/drivers/cpufreq/cpufreq_conservative.c
+++ b/drivers/cpufreq/cpufreq_conservative.c
@@ -346,7 +346,7 @@ struct cpufreq_governor *cpufreq_default_governor(void)
return CPU_FREQ_GOV_CONSERVATIVE;
}

-fs_initcall(cpufreq_gov_dbs_init);
+core_initcall(cpufreq_gov_dbs_init);
#else
module_init(cpufreq_gov_dbs_init);
#endif
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index dced033875bf8..82a4d37ddecb3 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -483,7 +483,7 @@ struct cpufreq_governor *cpufreq_default_governor(void)
return CPU_FREQ_GOV_ONDEMAND;
}

-fs_initcall(cpufreq_gov_dbs_init);
+core_initcall(cpufreq_gov_dbs_init);
#else
module_init(cpufreq_gov_dbs_init);
#endif
diff --git a/drivers/cpufreq/cpufreq_performance.c b/drivers/cpufreq/cpufreq_performance.c
index aaa04dfcacd9d..def9afe0f5b86 100644
--- a/drivers/cpufreq/cpufreq_performance.c
+++ b/drivers/cpufreq/cpufreq_performance.c
@@ -50,5 +50,5 @@ MODULE_AUTHOR("Dominik Brodowski <[email protected]>");
MODULE_DESCRIPTION("CPUfreq policy governor 'performance'");
MODULE_LICENSE("GPL");

-fs_initcall(cpufreq_gov_performance_init);
+core_initcall(cpufreq_gov_performance_init);
module_exit(cpufreq_gov_performance_exit);
diff --git a/drivers/cpufreq/cpufreq_powersave.c b/drivers/cpufreq/cpufreq_powersave.c
index c143dc237d878..1ae66019eb835 100644
--- a/drivers/cpufreq/cpufreq_powersave.c
+++ b/drivers/cpufreq/cpufreq_powersave.c
@@ -43,7 +43,7 @@ struct cpufreq_governor *cpufreq_default_governor(void)
return &cpufreq_gov_powersave;
}

-fs_initcall(cpufreq_gov_powersave_init);
+core_initcall(cpufreq_gov_powersave_init);
#else
module_init(cpufreq_gov_powersave_init);
#endif
diff --git a/drivers/cpufreq/cpufreq_userspace.c b/drivers/cpufreq/cpufreq_userspace.c
index cbd81c58cb8f0..b43e7cd502c58 100644
--- a/drivers/cpufreq/cpufreq_userspace.c
+++ b/drivers/cpufreq/cpufreq_userspace.c
@@ -147,7 +147,7 @@ struct cpufreq_governor *cpufreq_default_governor(void)
return &cpufreq_gov_userspace;
}

-fs_initcall(cpufreq_gov_userspace_init);
+core_initcall(cpufreq_gov_userspace_init);
#else
module_init(cpufreq_gov_userspace_init);
#endif
diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c
index 86800b4d5453f..322ca8860f548 100644
--- a/kernel/sched/cpufreq_schedutil.c
+++ b/kernel/sched/cpufreq_schedutil.c
@@ -915,7 +915,7 @@ static int __init sugov_register(void)
{
return cpufreq_register_governor(&schedutil_gov);
}
-fs_initcall(sugov_register);
+core_initcall(sugov_register);

#ifdef CONFIG_ENERGY_MODEL
extern bool sched_energy_update;
--
2.17.1

2019-10-21 12:18:29

by Amit Kucheria

[permalink] [raw]
Subject: [PATCH v5 4/6] cpufreq: Initialize cpufreq-dt driver earlier

This allows HW drivers that depend on cpufreq-dt to initialize earlier.

Signed-off-by: Amit Kucheria <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
---
drivers/cpufreq/cpufreq-dt-platdev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
index bca8d1f47fd2c..3282defe14d41 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -180,4 +180,4 @@ static int __init cpufreq_dt_platdev_init(void)
-1, data,
sizeof(struct cpufreq_dt_platform_data)));
}
-device_initcall(cpufreq_dt_platdev_init);
+core_initcall(cpufreq_dt_platdev_init);
--
2.17.1

2019-10-21 12:19:18

by Amit Kucheria

[permalink] [raw]
Subject: [PATCH v5 5/6] clk: qcom: Initialize clock drivers earlier

Initialize the clock drivers on sdm845 and qcs404 in core_initcall so we
can have earlier access to cpufreq during booting.

Signed-off-by: Amit Kucheria <[email protected]>
Acked-by: Stephen Boyd <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
---
drivers/clk/qcom/clk-rpmh.c | 2 +-
drivers/clk/qcom/gcc-qcs404.c | 2 +-
drivers/clk/qcom/gcc-sdm845.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/clk/qcom/clk-rpmh.c b/drivers/clk/qcom/clk-rpmh.c
index 96a36f6ff667d..20d4258f125b9 100644
--- a/drivers/clk/qcom/clk-rpmh.c
+++ b/drivers/clk/qcom/clk-rpmh.c
@@ -487,7 +487,7 @@ static int __init clk_rpmh_init(void)
{
return platform_driver_register(&clk_rpmh_driver);
}
-subsys_initcall(clk_rpmh_init);
+core_initcall(clk_rpmh_init);

static void __exit clk_rpmh_exit(void)
{
diff --git a/drivers/clk/qcom/gcc-qcs404.c b/drivers/clk/qcom/gcc-qcs404.c
index bd32212f37e64..9b0c4ce2ef4ec 100644
--- a/drivers/clk/qcom/gcc-qcs404.c
+++ b/drivers/clk/qcom/gcc-qcs404.c
@@ -2855,7 +2855,7 @@ static int __init gcc_qcs404_init(void)
{
return platform_driver_register(&gcc_qcs404_driver);
}
-subsys_initcall(gcc_qcs404_init);
+core_initcall(gcc_qcs404_init);

static void __exit gcc_qcs404_exit(void)
{
diff --git a/drivers/clk/qcom/gcc-sdm845.c b/drivers/clk/qcom/gcc-sdm845.c
index 95be125c3bddf..49dcff1af2db1 100644
--- a/drivers/clk/qcom/gcc-sdm845.c
+++ b/drivers/clk/qcom/gcc-sdm845.c
@@ -3628,7 +3628,7 @@ static int __init gcc_sdm845_init(void)
{
return platform_driver_register(&gcc_sdm845_driver);
}
-subsys_initcall(gcc_sdm845_init);
+core_initcall(gcc_sdm845_init);

static void __exit gcc_sdm845_exit(void)
{
--
2.17.1

2019-10-21 12:19:24

by Amit Kucheria

[permalink] [raw]
Subject: [PATCH v5 6/6] cpufreq: qcom-hw: Move driver initialization earlier

Allow qcom-hw driver to initialize right after the cpufreq and thermal
subsystems are initialised in core_initcall so we get earlier access to
thermal mitigation.

Signed-off-by: Amit Kucheria <[email protected]>
Acked-by: Daniel Lezcano <[email protected]>
Acked-by: Taniya Das <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
---
drivers/cpufreq/qcom-cpufreq-hw.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
index a9ae2f84a4efc..fc92a8842e252 100644
--- a/drivers/cpufreq/qcom-cpufreq-hw.c
+++ b/drivers/cpufreq/qcom-cpufreq-hw.c
@@ -334,7 +334,7 @@ static int __init qcom_cpufreq_hw_init(void)
{
return platform_driver_register(&qcom_cpufreq_hw_driver);
}
-device_initcall(qcom_cpufreq_hw_init);
+postcore_initcall(qcom_cpufreq_hw_init);

static void __exit qcom_cpufreq_hw_exit(void)
{
--
2.17.1

2019-10-31 02:45:13

by Zhang, Rui

[permalink] [raw]
Subject: Re: [PATCH v5 0/6] Initialise thermal framework and cpufreq earlier during boot

Hi,

Given that all the patches in this series have got the ACK from the
subsystem maintainers, I suppose we can take all the patches through
thermal tree, right?

thanks,
rui

On Mon, 2019-10-21 at 17:45 +0530, Amit Kucheria wrote:
> Changes since v4:
> - Collect Acks
> - Pick the US spelling for 'initialis^Hze' consistently.
>
> Changes since v3:
> - Init schedutil governor earlier too
> - Simplified changes to thermal_init() error path
> - Collects Acks
>
> Changes since v2:
> - Missed one patch when posting v2. Respinning.
>
> Changes since v1:
> - Completely get rid of netlink support in the thermal framework.
> - This changes the early init patch to a single line - change to
> core_initcall. Changed authorship of patch since it is nothing like
> the
> original. Lina, let me know if you feel otherwise.
> - I've tested to make sure that the qcom-cpufreq-hw driver continues
> to
> work correctly as a module so this won't impact Android's GKI
> plans.
> - Collected Acks
>
> Device boot needs to be as fast as possible while keeping under the
> thermal
> envelope. Now that thermal framework is built-in to the kernel, we
> can
> initialize it earlier to enable thermal mitigation during boot.
>
> We also need the cpufreq HW drivers to be initialised earlier to act
> as the
> cooling devices. This series only converts over the qcom-hw driver to
> initialize earlier but can be extended to other platforms as well.
>
> Amit Kucheria (6):
> thermal: Remove netlink support
> thermal: Initialize thermal subsystem earlier
> cpufreq: Initialize the governors in core_initcall
> cpufreq: Initialize cpufreq-dt driver earlier
> clk: qcom: Initialize clock drivers earlier
> cpufreq: qcom-hw: Move driver initialization earlier
>
> .../driver-api/thermal/sysfs-api.rst | 26 +----
> drivers/clk/qcom/clk-rpmh.c | 2 +-
> drivers/clk/qcom/gcc-qcs404.c | 2 +-
> drivers/clk/qcom/gcc-sdm845.c | 2 +-
> drivers/cpufreq/cpufreq-dt-platdev.c | 2 +-
> drivers/cpufreq/cpufreq_conservative.c | 2 +-
> drivers/cpufreq/cpufreq_ondemand.c | 2 +-
> drivers/cpufreq/cpufreq_performance.c | 2 +-
> drivers/cpufreq/cpufreq_powersave.c | 2 +-
> drivers/cpufreq/cpufreq_userspace.c | 2 +-
> drivers/cpufreq/qcom-cpufreq-hw.c | 2 +-
> drivers/thermal/thermal_core.c | 103 +---------------
> --
> include/linux/thermal.h | 11 --
> kernel/sched/cpufreq_schedutil.c | 2 +-
> 14 files changed, 19 insertions(+), 143 deletions(-)
>

2019-10-31 04:45:21

by Amit Kucheria

[permalink] [raw]
Subject: Re: [PATCH v5 0/6] Initialise thermal framework and cpufreq earlier during boot

Hi Rui,

I'm assuming that since Rafael acked it, he is ok with this going thru
the thermal tree.

Regards,
Amit

On Thu, Oct 31, 2019 at 8:12 AM Zhang Rui <[email protected]> wrote:
>
> Hi,
>
> Given that all the patches in this series have got the ACK from the
> subsystem maintainers, I suppose we can take all the patches through
> thermal tree, right?
>
> thanks,
> rui
>
> On Mon, 2019-10-21 at 17:45 +0530, Amit Kucheria wrote:
> > Changes since v4:
> > - Collect Acks
> > - Pick the US spelling for 'initialis^Hze' consistently.
> >
> > Changes since v3:
> > - Init schedutil governor earlier too
> > - Simplified changes to thermal_init() error path
> > - Collects Acks
> >
> > Changes since v2:
> > - Missed one patch when posting v2. Respinning.
> >
> > Changes since v1:
> > - Completely get rid of netlink support in the thermal framework.
> > - This changes the early init patch to a single line - change to
> > core_initcall. Changed authorship of patch since it is nothing like
> > the
> > original. Lina, let me know if you feel otherwise.
> > - I've tested to make sure that the qcom-cpufreq-hw driver continues
> > to
> > work correctly as a module so this won't impact Android's GKI
> > plans.
> > - Collected Acks
> >
> > Device boot needs to be as fast as possible while keeping under the
> > thermal
> > envelope. Now that thermal framework is built-in to the kernel, we
> > can
> > initialize it earlier to enable thermal mitigation during boot.
> >
> > We also need the cpufreq HW drivers to be initialised earlier to act
> > as the
> > cooling devices. This series only converts over the qcom-hw driver to
> > initialize earlier but can be extended to other platforms as well.
> >
> > Amit Kucheria (6):
> > thermal: Remove netlink support
> > thermal: Initialize thermal subsystem earlier
> > cpufreq: Initialize the governors in core_initcall
> > cpufreq: Initialize cpufreq-dt driver earlier
> > clk: qcom: Initialize clock drivers earlier
> > cpufreq: qcom-hw: Move driver initialization earlier
> >
> > .../driver-api/thermal/sysfs-api.rst | 26 +----
> > drivers/clk/qcom/clk-rpmh.c | 2 +-
> > drivers/clk/qcom/gcc-qcs404.c | 2 +-
> > drivers/clk/qcom/gcc-sdm845.c | 2 +-
> > drivers/cpufreq/cpufreq-dt-platdev.c | 2 +-
> > drivers/cpufreq/cpufreq_conservative.c | 2 +-
> > drivers/cpufreq/cpufreq_ondemand.c | 2 +-
> > drivers/cpufreq/cpufreq_performance.c | 2 +-
> > drivers/cpufreq/cpufreq_powersave.c | 2 +-
> > drivers/cpufreq/cpufreq_userspace.c | 2 +-
> > drivers/cpufreq/qcom-cpufreq-hw.c | 2 +-
> > drivers/thermal/thermal_core.c | 103 +---------------
> > --
> > include/linux/thermal.h | 11 --
> > kernel/sched/cpufreq_schedutil.c | 2 +-
> > 14 files changed, 19 insertions(+), 143 deletions(-)
> >
>

2019-10-31 06:02:02

by Daniel Lezcano

[permalink] [raw]
Subject: Re: [PATCH v5 0/6] Initialise thermal framework and cpufreq earlier during boot

Hi Zhang,

On 31/10/2019 03:42, Zhang Rui wrote:
> Hi,
>
> Given that all the patches in this series have got the ACK from the
> subsystem maintainers, I suppose we can take all the patches through
> thermal tree, right?

Right




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