[PATCH 03/16] drm/amdkfd: increase limit of signal events to 4096 per process

[Oded Gabbay]

On Sat, Oct 21, 2017 at 3:23 AM, Felix Kuehling <Felix.Kuehling at amd.com> wrote:
> From: Oded Gabbay <oded.gabbay at amd.com>
>
> Signed-off-by: Oded Gabbay <oded.gabbay at amd.com>
> Reviewed-by: Ben Goz <ben.goz at amd.com>
> Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com>
> ---
>  drivers/gpu/drm/amd/amdkfd/kfd_events.c | 2 +-
>  include/uapi/linux/kfd_ioctl.h          | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_events.c b/drivers/gpu/drm/amd/amdkfd/kfd_events.c
> index 61ce547..ade71b7 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_events.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.c
> @@ -82,7 +82,7 @@ struct signal_page {
>   * For SQ s_sendmsg interrupts, this is limited to 8 bits.
>   */
>
> -#define INTERRUPT_DATA_BITS 8
> +#define INTERRUPT_DATA_BITS 12
>  #define SIGNAL_EVENT_ID_SLOT_SHIFT 0
>
>  static uint64_t *page_slots(struct signal_page *page)
> diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h
> index 26283fe..731d0df 100644
> --- a/include/uapi/linux/kfd_ioctl.h
> +++ b/include/uapi/linux/kfd_ioctl.h
> @@ -169,7 +169,7 @@ struct kfd_ioctl_dbg_wave_control_args {
>  #define KFD_IOC_WAIT_RESULT_TIMEOUT            1
>  #define KFD_IOC_WAIT_RESULT_FAIL               2
>
> -#define KFD_SIGNAL_EVENT_LIMIT                 256
> +#define KFD_SIGNAL_EVENT_LIMIT                 4096
>
>  struct kfd_ioctl_create_event_args {
>         __u64 event_page_offset;        /* from KFD */
> --
> 2.7.4
>
NAK until we support existing thunk library.