From: Zhang Rui <rui.zhang@intel.com>
To: Durgadoss R <durgadoss.r@intel.com>
Cc: lenb@kernel.org, linux-acpi@vger.kernel.org, eduardo.valentin@ti.com
Subject: Re: [PATCHv3 12/15] Thermal: Register a governor for user space
Date: Mon, 10 Sep 2012 16:37:40 +0800 [thread overview]
Message-ID: <1347266260.1682.1080.camel@rui.sh.intel.com> (raw)
In-Reply-To: <1346500296-25200-13-git-send-email-durgadoss.r@intel.com>
On 六, 2012-09-01 at 17:21 +0530, Durgadoss R wrote:
> This patch registers a governor which will let the
> user land manage the platform thermals. Whenever a
> trip happens, this governor just notifies the user
> space using kobj_uevent().
>
Hmm, we can make this governor configurable, not the step_wise (which is
used as the default governor), right?
thanks,
rui
> Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
> ---
> drivers/thermal/thermal_sys.c | 18 ++++++++++++++++++
> include/linux/thermal.h | 2 ++
> 2 files changed, 20 insertions(+)
>
> diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
> index 936b025..93672aa 100644
> --- a/drivers/thermal/thermal_sys.c
> +++ b/drivers/thermal/thermal_sys.c
> @@ -130,6 +130,15 @@ exit:
> }
> EXPORT_SYMBOL_GPL(thermal_unregister_governor);
>
> +static int notify_user_space(struct thermal_zone_device *tz, int trip)
> +{
> + mutex_lock(&tz->lock);
> + kobject_uevent(&tz->device.kobj, KOBJ_CHANGE);
> + mutex_unlock(&tz->lock);
> +
> + return 0;
> +}
> +
> static int get_idr(struct idr *idr, struct mutex *lock, int *id)
> {
> int err;
> @@ -1860,6 +1869,12 @@ static inline int genetlink_init(void) { return 0; }
> static inline void genetlink_exit(void) {}
> #endif /* !CONFIG_NET */
>
> +struct thermal_governor thermal_gov_user_space = {
> + .name = USER_SPACE_THERMAL_GOVERNOR,
> + .throttle = notify_user_space,
> + .owner = THIS_MODULE,
> +};
> +
> static int __init thermal_init(void)
> {
> int result = 0;
> @@ -1871,6 +1886,8 @@ static int __init thermal_init(void)
> mutex_destroy(&thermal_idr_lock);
> mutex_destroy(&thermal_list_lock);
> }
> + /* Register a governor to notify user space */
> + thermal_register_governor(&thermal_gov_user_space);
> result = genetlink_init();
> return result;
> }
> @@ -1882,6 +1899,7 @@ static void __exit thermal_exit(void)
> idr_destroy(&thermal_cdev_idr);
> mutex_destroy(&thermal_idr_lock);
> mutex_destroy(&thermal_list_lock);
> + thermal_unregister_governor(&thermal_gov_user_space);
> genetlink_exit();
> }
>
> diff --git a/include/linux/thermal.h b/include/linux/thermal.h
> index 2bd9158..aa903dd 100644
> --- a/include/linux/thermal.h
> +++ b/include/linux/thermal.h
> @@ -48,6 +48,8 @@
>
> /* Default Thermal Governor: Does Linear Throttling */
> #define DEFAULT_THERMAL_GOVERNOR "step_wise"
> +/* User space Thermal governor */
> +#define USER_SPACE_THERMAL_GOVERNOR "user_space"
>
> struct thermal_zone_device;
> struct thermal_cooling_device;
--
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2012-09-10 8:36 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-01 11:51 [PATCHv3 00/15] Thermal_Framework_Enhancements Durgadoss R
2012-09-01 11:51 ` [PATCHv3 01/15] Thermal: Refactor thermal.h file Durgadoss R
2012-09-01 11:51 ` [PATCHv3 02/15] Thermal: Move thermal_instance to thermal_core.h Durgadoss R
2012-09-01 11:51 ` [PATCHv3 03/15] Thermal: Add get trend, get instance API's to thermal_sys Durgadoss R
2012-09-01 11:51 ` [PATCHv3 04/15] Thermal: Add platform level information to thermal.h Durgadoss R
2012-09-01 11:51 ` [PATCHv3 05/15] Thermal: Pass zone parameters as argument to tzd_register Durgadoss R
2012-09-01 11:51 ` [PATCHv3 06/15] Thermal: Add thermal governor registration APIs Durgadoss R
2012-09-10 8:28 ` Zhang Rui
2012-09-01 11:51 ` [PATCHv3 07/15] Thermal: Add a policy sysfs attribute Durgadoss R
2012-09-01 11:51 ` [PATCHv3 08/15] Thermal: Update binding logic based on platform data Durgadoss R
2012-09-01 11:51 ` [PATCHv3 09/15] Thermal: Make thermal_cdev_update as a global function Durgadoss R
2012-09-01 11:51 ` [PATCHv3 10/15] Thermal: Introduce fair_share thermal governor Durgadoss R
2012-09-01 11:51 ` [PATCHv3 11/15] Thermal: Introduce a step_wise " Durgadoss R
2012-09-01 11:51 ` [PATCHv3 12/15] Thermal: Register a governor for user space Durgadoss R
2012-09-10 8:37 ` Zhang Rui [this message]
2012-09-01 11:51 ` [PATCHv3 13/15] Thermal: Remove throttling logic out of thermal_sys.c Durgadoss R
2012-09-10 8:44 ` Zhang Rui
2012-09-10 8:56 ` R, Durgadoss
2012-09-11 0:24 ` Zhang Rui
2012-09-11 3:05 ` R, Durgadoss
2012-09-11 3:20 ` Zhang Rui
2012-09-11 3:39 ` R, Durgadoss
2012-09-01 11:51 ` [PATCHv3 14/15] Thermal: Add a notification API Durgadoss R
2012-09-01 11:51 ` [PATCHv3 15/15] Thermal: Add documentation for platform layer data Durgadoss R
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1347266260.1682.1080.camel@rui.sh.intel.com \
--to=rui.zhang@intel.com \
--cc=durgadoss.r@intel.com \
--cc=eduardo.valentin@ti.com \
--cc=lenb@kernel.org \
--cc=linux-acpi@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).