[PATCH v8 3/6] drm/xe/guc: Add capture size check in GuC log buffer

[Dong, Zhanjun]

On 2024-05-08 6:57 p.m., Teres Alexis, Alan Previn wrote:
> On Mon, 2024-05-06 at 18:47 -0700, Zhanjun Dong wrote:
>> The capture-nodes is included in GuC log buffer, add the size check
>> for capture region in the whole GuC log buffer.
>> Check the worst size of register capture aginst error capture region
>> size.
>>
> alan:snip
> 
>> +
>> +#define GUC_LOG_DEFAULT_CRASH_BUFFER_SIZE      CRASH_BUFFER_SIZE
>> +#define GUC_LOG_DEFAULT_DEBUG_BUFFER_SIZE      DEBUG_BUFFER_SIZE
>> +#define GUC_LOG_DEFAULT_CAPTURE_BUFFER_SIZE    CAPTURE_BUFFER_SIZE
>> +
> 
> nit: actually not sure why we need the define on the left, since the
> usage could just use the ones its sourced from on the right.
> 
> alan: as per offline conversation, we beilieve the default size needs t
> to larger to accomodate back to back worst case capture sizes.
> So as per offline, we need to increase that to at least 32K? (or 128K
> with spare)

CAPTURE_BUFFER_SIZE will be set to 1M, which is equal to the i915 setting.

Regards,
Zhanjun