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From: Amit Kucheria <amit.kucheria@verdurent.com>
To: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Cc: "Linux PM list" <linux-pm@vger.kernel.org>,
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Subject: Re: [PATCH v7 09/11] thermal: core: Stop polling DISABLED thermal devices
Date: Mon, 29 Jun 2020 18:16:39 +0530
Message-ID: <CAHLCerNsXrkJqU5_Tw_PA8YQLGsHzDg7POrBRtvisBtJixU+CA@mail.gmail.com> (raw)
In-Reply-To: <20200629122925.21729-10-andrzej.p@collabora.com>

On Mon, Jun 29, 2020 at 6:00 PM Andrzej Pietrasiewicz
<andrzej.p@collabora.com> wrote:
>
> Polling DISABLED devices is not desired, as all such "disabled" devices
> are meant to be handled by userspace. This patch introduces and uses
> should_stop_polling() to decide whether the device should be polled or not.
>
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>

> ---
>  drivers/thermal/thermal_core.c | 16 ++++++++++++++--
>  1 file changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> index 52d136780577..e613f5c07bad 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -301,13 +301,22 @@ static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
>                 cancel_delayed_work(&tz->poll_queue);
>  }
>
> +static inline bool should_stop_polling(struct thermal_zone_device *tz)
> +{
> +       return !thermal_zone_device_is_enabled(tz);
> +}
> +
>  static void monitor_thermal_zone(struct thermal_zone_device *tz)
>  {
> +       bool stop;
> +
> +       stop = should_stop_polling(tz);
> +
>         mutex_lock(&tz->lock);
>
> -       if (tz->passive)
> +       if (!stop && tz->passive)
>                 thermal_zone_device_set_polling(tz, tz->passive_delay);
> -       else if (tz->polling_delay)
> +       else if (!stop && tz->polling_delay)
>                 thermal_zone_device_set_polling(tz, tz->polling_delay);
>         else
>                 thermal_zone_device_set_polling(tz, 0);
> @@ -517,6 +526,9 @@ void thermal_zone_device_update(struct thermal_zone_device *tz,
>  {
>         int count;
>
> +       if (should_stop_polling(tz))
> +               return;
> +
>         if (atomic_read(&in_suspend))
>                 return;
>
> --
> 2.17.1
>

  reply index

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-29 12:29 [PATCH v7 00/11] Stop monitoring disabled devices Andrzej Pietrasiewicz
2020-06-29 12:29 ` [PATCH v7 01/11] acpi: thermal: Fix error handling in the register function Andrzej Pietrasiewicz
2020-06-29 12:29 ` [PATCH v7 02/11] thermal: Store thermal mode in a dedicated enum Andrzej Pietrasiewicz
2020-06-29 12:29 ` [PATCH v7 03/11] thermal: Add current mode to thermal zone device Andrzej Pietrasiewicz
2020-06-29 12:29 ` [PATCH v7 04/11] thermal: Store device mode in struct thermal_zone_device Andrzej Pietrasiewicz
2020-06-29 12:29 ` [PATCH v7 05/11] thermal: remove get_mode() operation of drivers Andrzej Pietrasiewicz
2020-06-29 12:29 ` [PATCH v7 06/11] thermal: Add mode helpers Andrzej Pietrasiewicz
2020-06-29 12:29 ` [PATCH v7 07/11] thermal: Use mode helpers in drivers Andrzej Pietrasiewicz
2020-06-29 12:45   ` Amit Kucheria
2020-06-29 14:14   ` Bartlomiej Zolnierkiewicz
2020-06-29 12:29 ` [PATCH v7 08/11] thermal: Explicitly enable non-changing thermal zone devices Andrzej Pietrasiewicz
2020-06-29 14:15   ` Bartlomiej Zolnierkiewicz
2020-06-30  5:07   ` Amit Kucheria
2020-06-29 12:29 ` [PATCH v7 09/11] thermal: core: Stop polling DISABLED thermal devices Andrzej Pietrasiewicz
2020-06-29 12:46   ` Amit Kucheria [this message]
2020-06-29 12:29 ` [PATCH v7 10/11] thermal: Simplify or eliminate unnecessary set_mode() methods Andrzej Pietrasiewicz
2020-06-29 12:47   ` Amit Kucheria
2020-06-29 12:29 ` [PATCH v7 11/11] thermal: Rename set_mode() to change_mode() Andrzej Pietrasiewicz
2020-06-29 12:48   ` Amit Kucheria
2020-06-30 12:57 ` [PATCH v7 00/11] Stop monitoring disabled devices Daniel Lezcano
2020-06-30 13:43   ` Andrzej Pietrasiewicz
2020-06-30 14:53     ` Daniel Lezcano
2020-06-30 15:29       ` Andrzej Pietrasiewicz
2020-06-30 15:53         ` Daniel Lezcano
2020-06-30 16:56           ` Andrzej Pietrasiewicz
2020-06-30 18:33             ` Daniel Lezcano
2020-07-01 10:23               ` Andrzej Pietrasiewicz
2020-07-01 14:25                 ` Daniel Lezcano
2020-07-02 13:47                 ` Daniel Lezcano
2020-07-02 13:53                   ` Andrzej Pietrasiewicz
2020-07-02 14:58                     ` Daniel Lezcano
2020-07-02 17:01                     ` Daniel Lezcano
2020-07-02 17:19                       ` Andrzej Pietrasiewicz
2020-07-02 17:49                         ` Daniel Lezcano
2020-07-02 17:52                           ` Daniel Lezcano
2020-07-03  1:49                           ` Zhang Rui
2020-07-03  6:38                             ` Daniel Lezcano
2020-07-03 10:45                               ` Andrzej Pietrasiewicz
2020-07-03 11:05                                 ` Daniel Lezcano

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