linux-kernel - Re: [PATCH] drm/i915/guc: Remove usage of the deprecated ida_simple

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Message-ID: <a788ee2e-ee51-476f-8aee-aa344f221f9c@wanadoo.fr>
Date: Sun, 14 Apr 2024 10:26:35 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Matthew Brost <matthew.brost@...el.com>
Cc: Jani Nikula <jani.nikula@...ux.intel.com>,
 Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
 Rodrigo Vivi <rodrigo.vivi@...el.com>,
 Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
 intel-gfx@...ts.freedesktop.org, kernel-janitors@...r.kernel.org,
 linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH] drm/i915/guc: Remove usage of the deprecated
 ida_simple_xx() API

Le 25/01/2024 à 01:04, Matthew Brost a écrit :
> On Sun, Jan 14, 2024 at 04:15:34PM +0100, Christophe JAILLET wrote:
>> ida_alloc() and ida_free() should be preferred to the deprecated
>> ida_simple_get() and ida_simple_remove().
>>
>> Note that the upper limit of ida_simple_get() is exclusive, but the one of
>> ida_alloc_range() is inclusive. So a -1 has been added when needed.
>>
>> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> 
> Reviewed-by: Matthew Brost <matthew.brost@...el.com>

Hi,

polite reminder ;-)

CJ

> 
>> ---
>>   drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c | 13 ++++++-------
>>   1 file changed, 6 insertions(+), 7 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
>> index a259f1118c5a..73ce21ddf682 100644
>> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
>> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
>> @@ -2156,11 +2156,10 @@ static int new_guc_id(struct intel_guc *guc, struct intel_context *ce)
>>   					      order_base_2(ce->parallel.number_children
>>   							   + 1));
>>   	else
>> -		ret = ida_simple_get(&guc->submission_state.guc_ids,
>> -				     NUMBER_MULTI_LRC_GUC_ID(guc),
>> -				     guc->submission_state.num_guc_ids,
>> -				     GFP_KERNEL | __GFP_RETRY_MAYFAIL |
>> -				     __GFP_NOWARN);
>> +		ret = ida_alloc_range(&guc->submission_state.guc_ids,
>> +				      NUMBER_MULTI_LRC_GUC_ID(guc),
>> +				      guc->submission_state.num_guc_ids - 1,
>> +				      GFP_KERNEL | __GFP_RETRY_MAYFAIL | __GFP_NOWARN);
>>   	if (unlikely(ret < 0))
>>   		return ret;
>>   
>> @@ -2183,8 +2182,8 @@ static void __release_guc_id(struct intel_guc *guc, struct intel_context *ce)
>>   							   + 1));
>>   		} else {
>>   			--guc->submission_state.guc_ids_in_use;
>> -			ida_simple_remove(&guc->submission_state.guc_ids,
>> -					  ce->guc_id.id);
>> +			ida_free(&guc->submission_state.guc_ids,
>> +				 ce->guc_id.id);
>>   		}
>>   		clr_ctx_id_mapping(guc, ce->guc_id.id);
>>   		set_context_guc_id_invalid(ce);
>> -- 
>> 2.43.0
>>
> 
>