From: Steven Price <steven.price@arm.com>
To: "Clément Péron" <peron.clem@gmail.com>,
"Rob Herring" <robh@kernel.org>,
"Tomeu Vizoso" <tomeu.vizoso@collabora.com>,
"Alyssa Rosenzweig" <alyssa.rosenzweig@collabora.com>,
"Viresh Kumar" <vireshk@kernel.org>, "Nishanth Menon" <nm@ti.com>,
"Stephen Boyd" <sboyd@kernel.org>,
"Maxime Ripard" <mripard@kernel.org>,
"Chen-Yu Tsai" <wens@csie.org>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 03/15] drm/panfrost: don't use pfdevfreq.busy_count to know if hw is idle
Date: Thu, 28 May 2020 14:22:38 +0100 [thread overview]
Message-ID: <3c108f43-67bd-8056-879d-36aea2d66a60@arm.com> (raw)
In-Reply-To: <20200510165538.19720-4-peron.clem@gmail.com>
On 10/05/2020 17:55, Clément Péron wrote:
> This use devfreq variable that will be lock with spinlock in future
> patches. We should either introduce a function to access this one
> but as devfreq is optional let's just remove it.
>
> Signed-off-by: Clément Péron <peron.clem@gmail.com>
As far as I can tell this should be safe. As you note this wouldn't work
without devfreq anyway.
Reviewed-by: Steven Price <steven.price@arm.com>
> ---
> drivers/gpu/drm/panfrost/panfrost_job.c | 4 ----
> 1 file changed, 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c b/drivers/gpu/drm/panfrost/panfrost_job.c
> index 7914b1570841..63e32a9f2749 100644
> --- a/drivers/gpu/drm/panfrost/panfrost_job.c
> +++ b/drivers/gpu/drm/panfrost/panfrost_job.c
> @@ -581,10 +581,6 @@ int panfrost_job_is_idle(struct panfrost_device *pfdev)
> struct panfrost_job_slot *js = pfdev->js;
> int i;
>
> - /* Check whether the hardware is idle */
> - if (atomic_read(&pfdev->devfreq.busy_count))
> - return false;
> -
> for (i = 0; i < NUM_JOB_SLOTS; i++) {
> /* If there are any jobs in the HW queue, we're not idle */
> if (atomic_read(&js->queue[i].sched.hw_rq_count))
>
next prev parent reply other threads:[~2020-05-28 13:22 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-10 16:55 [PATCH 00/15][RFC] Add regulator devfreq support to Panfrost Clément Péron
2020-05-10 16:55 ` [PATCH 01/15] drm/panfrost: avoid static declaration Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-10 16:55 ` [PATCH 02/15] drm/panfrost: clean headers in devfreq Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-10 16:55 ` [PATCH 03/15] drm/panfrost: don't use pfdevfreq.busy_count to know if hw is idle Clément Péron
2020-05-28 13:22 ` Steven Price [this message]
2020-05-10 16:55 ` [PATCH 04/15] drm/panfrost: introduce panfrost_devfreq struct Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-10 16:55 ` [PATCH 05/15] drm/panfrost: use spinlock instead of atomic Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-29 12:20 ` Robin Murphy
2020-05-29 12:35 ` Clément Péron
2020-05-29 12:47 ` Steven Price
2020-05-10 16:55 ` [PATCH 06/15] drm/panfrost: properly handle error in probe Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-10 16:55 ` [PATCH 07/15] drm/panfrost: use device_property_present to check for OPP Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-29 12:45 ` Clément Péron
2020-05-10 16:55 ` [PATCH 08/15] drm/panfrost: move devfreq_init()/fini() in device Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-29 12:38 ` Clément Péron
2020-06-08 11:55 ` Tomeu Vizoso
2020-05-10 16:55 ` [PATCH 09/15] drm/panfrost: dynamically alloc regulators Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-10 16:55 ` [PATCH 10/15] drm/panfrost: add regulators to devfreq Clément Péron
2020-05-28 13:23 ` Steven Price
2020-05-29 12:37 ` Clément Péron
2020-05-10 16:55 ` [PATCH 11/15] drm/panfrost: set devfreq clock name Clément Péron
2020-05-28 13:23 ` Steven Price
2020-05-29 12:35 ` Clément Péron
2020-05-10 16:55 ` [PATCH 12/15] arm64: defconfig: Enable devfreq cooling device Clément Péron
2020-05-10 16:55 ` [PATCH 13/15] arm64: dts: allwinner: h6: Add cooling map for GPU Clément Péron
2020-05-10 16:55 ` [PATCH 14/15] [DO NOT MERGE] arm64: dts: allwinner: h6: Add GPU OPP table Clément Péron
2020-05-10 16:55 ` [PATCH 15/15] [DO NOT MERGE] arm64: dts: allwinner: force GPU regulator to be always Clément Péron
2020-05-11 5:43 ` [PATCH 00/15][RFC] Add regulator devfreq support to Panfrost Tomeu Vizoso
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