linux-kernel - Re: [PATCH v2] drm/syncobj: Fix sync syncobj issue

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Date:   Tue, 12 Jul 2022 12:26:27 +0200
From:   Christian König <christian.koenig@....com>
To:     jie1zhan <jesse.zhang@....com>, broonie@...nel.org,
        dri-devel-bounces@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org
Cc:     Vijendar.Mukunda@....com, Basavaraj.Hiregoudar@....com,
        Sunil-kumar.Dommati@....com, ajitkumar.pandey@....com,
        lucas.demarchi@...el.com, nirmoy.das@...ux.intel.com,
        lionel.g.landwerlin@...el.com,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] drm/syncobj: Fix sync syncobj issue

Ping to the Intel guys here. Especially Lucas/Nirmoy/Lionel.

IIRC you stumbled over that problem as well, have you found any solution?

Regards,
Christian.

Am 07.07.22 um 12:29 schrieb jie1zhan:
> enable signaling after flatten dma_fence_chains on transfer
>
> Signed-off-by: jie1zhan <jesse.zhang@....com>
> ---
>   drivers/gpu/drm/drm_syncobj.c | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
> index 7e48dcd1bee4..0d9d3577325f 100644
> --- a/drivers/gpu/drm/drm_syncobj.c
> +++ b/drivers/gpu/drm/drm_syncobj.c
> @@ -920,6 +920,7 @@ static int drm_syncobj_transfer_to_timeline(struct drm_file *file_private,
>   	if (ret)
>   		goto err_free_fence;
>   
> +	dma_fence_enable_sw_signaling(fence);
>   	chain = dma_fence_chain_alloc();
>   	if (!chain) {
>   		ret = -ENOMEM;