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 <20200618145838.2956591-1-andrey.lebedev@gmail.com>
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From:   Qiang Yu <yuq825@gmail.com>
Date:   Fri, 19 Jun 2020 10:03:05 +0800
Message-ID: <CAKGbVbtYusvURFcUyQtgUycNJPAQyDGDaLXW8qw-x49DqfKmQA@mail.gmail.com>
Subject: Re: [PATCH] drm/lima: Expose job_hang_limit module parameter
To:     Andrey Lebedev <andrey.lebedev@gmail.com>
Cc:     David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
        dri-devel <dri-devel@lists.freedesktop.org>,
        lima@lists.freedesktop.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Andrey Lebedev <andrey@lebedev.lt>,
        kernel test robot <lkp@intel.com>
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On Thu, Jun 18, 2020 at 10:58 PM Andrey Lebedev
<andrey.lebedev@gmail.com> wrote:
>
> From: Andrey Lebedev <andrey@lebedev.lt>
>
> Some pp or gp jobs can be successfully repeated even after they time outs.
> Introduce lima module parameter to specify number of times a job can hang
> before being dropped.
>
> Signed-off-by: Andrey Lebedev <andrey@lebedev.lt>
> ---
>
> Fixes for the embarrassing build error
> Reported-by: kernel test robot <lkp@intel.com>
>
>  drivers/gpu/drm/lima/lima_drv.c   | 4 ++++
>  drivers/gpu/drm/lima/lima_drv.h   | 1 +
>  drivers/gpu/drm/lima/lima_sched.c | 5 +++--
>  3 files changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/lima/lima_drv.c b/drivers/gpu/drm/lima/lima_drv.c
> index a831565af813..2400b8d52d92 100644
> --- a/drivers/gpu/drm/lima/lima_drv.c
> +++ b/drivers/gpu/drm/lima/lima_drv.c
> @@ -19,6 +19,7 @@
>  int lima_sched_timeout_ms;
>  uint lima_heap_init_nr_pages = 8;
>  uint lima_max_error_tasks;
> +uint lima_job_hang_limit;
>
>  MODULE_PARM_DESC(sched_timeout_ms, "task run timeout in ms");
>  module_param_named(sched_timeout_ms, lima_sched_timeout_ms, int, 0444);
> @@ -29,6 +30,9 @@ module_param_named(heap_init_nr_pages, lima_heap_init_nr_pages, uint, 0444);
>  MODULE_PARM_DESC(max_error_tasks, "max number of error tasks to save");
>  module_param_named(max_error_tasks, lima_max_error_tasks, uint, 0644);
>
> +MODULE_PARM_DESC(job_hang_limit, "number of times to allow a job to hang before dropping it (default 0)");
> +module_param_named(job_hang_limit, lima_job_hang_limit, int, 0444);
> +
Still miss this "int" to "uint".

Regards,
Qiang

>  static int lima_ioctl_get_param(struct drm_device *dev, void *data, struct drm_file *file)
>  {
>         struct drm_lima_get_param *args = data;
> diff --git a/drivers/gpu/drm/lima/lima_drv.h b/drivers/gpu/drm/lima/lima_drv.h
> index fdbd4077c768..c738d288547b 100644
> --- a/drivers/gpu/drm/lima/lima_drv.h
> +++ b/drivers/gpu/drm/lima/lima_drv.h
> @@ -11,6 +11,7 @@
>  extern int lima_sched_timeout_ms;
>  extern uint lima_heap_init_nr_pages;
>  extern uint lima_max_error_tasks;
> +extern uint lima_job_hang_limit;
>
>  struct lima_vm;
>  struct lima_bo;
> diff --git a/drivers/gpu/drm/lima/lima_sched.c b/drivers/gpu/drm/lima/lima_sched.c
> index e6cefda00279..1602985dfa04 100644
> --- a/drivers/gpu/drm/lima/lima_sched.c
> +++ b/drivers/gpu/drm/lima/lima_sched.c
> @@ -503,8 +503,9 @@ int lima_sched_pipe_init(struct lima_sched_pipe *pipe, const char *name)
>
>         INIT_WORK(&pipe->recover_work, lima_sched_recover_work);
>
> -       return drm_sched_init(&pipe->base, &lima_sched_ops, 1, 0,
> -                             msecs_to_jiffies(timeout), name);
> +       return drm_sched_init(&pipe->base, &lima_sched_ops, 1,
> +                             lima_job_hang_limit, msecs_to_jiffies(timeout),
> +                             name);
>  }
>
>  void lima_sched_pipe_fini(struct lima_sched_pipe *pipe)
> --
> 2.25.1
>