[Intel-gfx] [PATCH 8/8] drm/i915: Trim unused workaround list entries

[Tvrtko Ursulin]

On 30/11/2018 11:49, Chris Wilson wrote:
> Quoting Tvrtko Ursulin (2018-11-30 11:32:01)
>> From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
>>
>> The new workaround list allocator grows the list in chunks so will end up
>> with some unused space. Trim it when the initialization phase is done to
>> free up a tiny bit of slab.
>>
>> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
>> ---
>>   drivers/gpu/drm/i915/intel_workarounds.c | 13 +++++++++++++
>>   1 file changed, 13 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
>> index de2bddbc64b4..abfe4b530c23 100644
>> --- a/drivers/gpu/drm/i915/intel_workarounds.c
>> +++ b/drivers/gpu/drm/i915/intel_workarounds.c
>> @@ -55,6 +55,19 @@ static void wa_init_start(struct i915_wa_list *wal, const char *name)
>>   
>>   static void wa_init_finish(struct i915_wa_list *wal)
>>   {
>> +       /* Trim unused entries. */
>> +       if (wal->count < wal->__size) {
>> +               struct i915_wa *wa =
>> +                       kcalloc(wal->count, sizeof(*wa), GFP_KERNEL);
> 
> kcalloc followed by memcpy, what have you done with Tvrtko?
> kmemdup ?

Oh well, the richer the API the easier to forget. :)

Regards,

Tvrtko