On Fri, Sep 16, 2022 at 05:12:04PM +0200, Lucas Stach wrote:
> Allows to easily track if several fd are pointing to the same
> execution context due to being dup'ed.
>
> Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/etnaviv/etnaviv_drv.c | 3 +++
> drivers/gpu/drm/etnaviv/etnaviv_drv.h | 1 +
> 2 files changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
> index 1d2b4fb4bcf8..b69edb40ae2a 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
> @@ -49,6 +49,7 @@ static void load_gpu(struct drm_device *dev)
> static int etnaviv_open(struct drm_device *dev, struct drm_file *file)
> {
> struct etnaviv_drm_private *priv = dev->dev_private;
> + static atomic_t ident = ATOMIC_INIT(0);
> struct etnaviv_file_private *ctx;
> int ret, i;
>
> @@ -56,6 +57,8 @@ static int etnaviv_open(struct drm_device *dev, struct drm_file *file)
> if (!ctx)
> return -ENOMEM;
>
> + ctx->id = atomic_inc_return(&ident);
I suppose we can ignore that this could theoretically wrap around.
Reviewed-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
regards
Philipp
