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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <fzpptocruoesi4qdksksygpfbiarnatt75p4p7t4l4emjxunw3@xesto7hczmyx>
Date: Tue, 20 Feb 2024 14:39:31 -0600
From: Lucas De Marchi <lucas.demarchi@...el.com>
To: Christophe JAILLET <christophe.jaillet@...adoo.fr>
CC: Oded Gabbay <ogabbay@...nel.org>, Thomas Hellström
	<thomas.hellstrom@...ux.intel.com>, Maarten Lankhorst
	<maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>, <kernel-janitors@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
	<intel-xe@...ts.freedesktop.org>
Subject: Re: Re: [PATCH] drm/xe/guc: Remove usage of the deprecated
 ida_simple_xx() API

On Tue, Feb 20, 2024 at 02:34:53PM -0600, Lucas De Marchi wrote:
>On Sun, Jan 14, 2024 at 04:09:16PM +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_max() is inclusive. So a -1 has been added when needed.
>>
>>Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
>
>
>Reviewed-by: Lucas De Marchi <lucas.demarchi@...el.com>

just noticed we already have CI results for this. Applied to
drm-xe-next, thanks.

Lucas De Marchi

>
>Lucas De Marchi
>
>>---
>>drivers/gpu/drm/xe/xe_guc_submit.c | 6 +++---
>>1 file changed, 3 insertions(+), 3 deletions(-)
>>
>>diff --git a/drivers/gpu/drm/xe/xe_guc_submit.c b/drivers/gpu/drm/xe/xe_guc_submit.c
>>index 21ac68e3246f..11ffacd1dd58 100644
>>--- a/drivers/gpu/drm/xe/xe_guc_submit.c
>>+++ b/drivers/gpu/drm/xe/xe_guc_submit.c
>>@@ -311,7 +311,7 @@ static void __release_guc_id(struct xe_guc *guc, struct xe_exec_queue *q, u32 xa
>>				      q->guc->id - GUC_ID_START_MLRC,
>>				      order_base_2(q->width));
>>	else
>>-		ida_simple_remove(&guc->submission_state.guc_ids, q->guc->id);
>>+		ida_free(&guc->submission_state.guc_ids, q->guc->id);
>>}
>>
>>static int alloc_guc_id(struct xe_guc *guc, struct xe_exec_queue *q)
>>@@ -335,8 +335,8 @@ static int alloc_guc_id(struct xe_guc *guc, struct xe_exec_queue *q)
>>		ret = bitmap_find_free_region(bitmap, GUC_ID_NUMBER_MLRC,
>>					      order_base_2(q->width));
>>	} else {
>>-		ret = ida_simple_get(&guc->submission_state.guc_ids, 0,
>>-				     GUC_ID_NUMBER_SLRC, GFP_NOWAIT);
>>+		ret = ida_alloc_max(&guc->submission_state.guc_ids,
>>+				    GUC_ID_NUMBER_SLRC - 1, GFP_NOWAIT);
>>	}
>>	if (ret < 0)
>>		return ret;
>>-- 
>>2.43.0
>>