Re: [Intel-gfx] [PATCH 11/19] drm/i915/perf: Store a pointer to oa_format in oa_buffer

Dixit, Ashutosh
2022-09-14T20:43:14Z

On Tue, 23 Aug 2022 13:41:47 -0700, Umesh Nerlige Ramappa wrote:
>
> @@ -3184,15 +3184,12 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
> stream->sample_flags = props->sample_flags;
> stream->sample_size += format_size;
>
> - stream->oa_buffer.format_size = format_size;
> - if (drm_WARN_ON(&i915->drm, stream->oa_buffer.format_size == 0))
> + stream->oa_buffer.format = &perf->oa_formats[props->oa_format];
> + if (drm_WARN_ON(&i915->drm, stream->oa_buffer.format->size == 0))
> return -EINVAL;

I would also move these 3 lines before the two lines on the top, eliminate
the format_size variable and assignment and just use
stream->oa_buffer.format->size. Otherwise:

Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>

> stream->hold_preemption = props->hold_preemption;
>
> - stream->oa_buffer.format =
> - perf->oa_formats[props->oa_format].format;
> -
> stream->periodic = props->oa_periodic;
> if (stream->periodic)
> stream->period_exponent = props->oa_period_exponent;
> diff --git a/drivers/gpu/drm/i915/i915_perf_types.h b/drivers/gpu/drm/i915/i915_perf_types.h
> index dc9bfd8086cf..e0c96b44eda8 100644
> --- a/drivers/gpu/drm/i915/i915_perf_types.h
> +++ b/drivers/gpu/drm/i915/i915_perf_types.h
> @@ -250,11 +250,10 @@ struct i915_perf_stream {
> * @oa_buffer: State of the OA buffer.
> */
> struct {
> + const struct i915_oa_format *format;
> struct i915_vma *vma;
> u8 *vaddr;
> u32 last_ctx_id;
> - int format;
> - int format_size;
> int size_exponent;
>