From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792677226; b=T7NLcMixtQJ/bSOy9puqYXGmN24tY/Q4rmuo9UPLhu29cUTdPbNG3aSeDsrKbuhAOCPg zk3tZpyWkXCVtk216y0upKl7HmGzuMB5jOdWRaAu9CB/3tzyvYGJzEWjWjB2qQrmIMu1I ho3zm9MpDtiMD7EURbZ3gCSUxY2DfAahNEIJkZGAgPqZTPgFzmXWxA80Z+TyVOL7y1OUy FZxGuq+9mZtJpImuJe/a8gcmc7FvZp1//46+Vuk15G0Ll8IyC9jhHzWR9jVcDmQzYfpFN Ur+gbx8bNZfrjdt3BH7uoHoPZGI4HsCGHmZ5Ka9HWF5Grwe1iSDZhfAg6aRv79jPBBw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792677226; h=Received:DKIM-Signature:From:Date:Subject:MIME-Version:Content-Type: Content-Transfer-Encoding:Message-Id:References:In-Reply-To:To:Cc: X-Mailer:X-Developer-Signature:X-Developer-Key; bh=MnMXvzusoeoF9/Av5Lg+FeAyi2kBZMpvF5JpP2g3l24=; b=MoiLtijKgszGluOgJ+/dHUcZMqEUQljbxY5six4lIojAa388PkfoVkiFU90dkCOwR4rZ XvXxQWs+pFwQic79KkTcET/JKQbkmJfv8qevE8iIrUeoa/XtVkLGljGNGlc9+dyTbL6pK WtbEYxXhL9vyUytN0L/nqkK9MPoUw5FD6Eq0px5N9r5/d5qI+6AoDtpxStdJ5es6BC5vK Sfap6LwLPG9ozMH+y+G+/pjbyir5qb+YYzEihkEFg1+29QbHfIy332r/6o2ifmdITnvij vVCpWaNnf6tybl04nEjEKDYMqKh2Ai3p2Z3dikDay9Mz33md0aDvOTazW5OEKsnrZSQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=ZwppmPUL; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EF43F60A380C for ; Thu, 22 Oct 2026 13:53:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=ZwppmPUL Received: by smtp.kernel.org (Postfix) with ESMTPSA id 512701F000C4; Thu, 22 Oct 2026 13:53:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792677225; bh=MnMXvzusoeoF9/Av5Lg+FeAyi2kBZMpvF5JpP2g3l24=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=ZwppmPULWq+QDxGcbSIIw3Jfs0p3VyNrtZz/mP+hK74A6w0fEBz3SWcsI5BjzK2Ss hdXYDvrJLfXBnjfmVY8tRJZj6/rE7pbm2ltLUAjKGH8ENapvqTDHMwCHp9xbi85aog jVqcglNVivCa3wxvHIkOEdW6g2MBOB6rZmhANyYDa11BV524exfdVPCFgvi2eUq3c4 i1uTyOUXvY8QmLd3UPgpxDZo3WbpmDsfyEZmlVBPAlhp0Kj31rHmwlw6hMPloxXkz8 YJNZP46gBV8KzINISlYziaAbY+eMDTJLyt1r7MbHfR6UAJoyYqnLyRWFoLNYjZJD7q n/QjIiA14kPYA== From: Maxime Ripard Date: Thu, 22 Oct 2026 15:53:09 +0200 Subject: [PATCH v6 08/15] drm/atomic: Create function to insert private obj state into a commit X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261022-drm-reset-state-flag-v6-8-f36d640b7e76@kernel.org> References: <20261022-drm-reset-state-flag-v6-0-f36d640b7e76@kernel.org> In-Reply-To: <20261022-drm-reset-state-flag-v6-0-f36d640b7e76@kernel.org> To: Maarten Lankhorst , Thomas Zimmermann , David Airlie , Simona Vetter , Louis Chauvet , Haneen Mohammed , Melissa Wen Cc: Daniel Stone , Harry Wentland , Jocelyn Falempe , =?utf-8?q?Jonas_=C3=85dahl?= , =?utf-8?q?Michel_D=C3=A4nzer?= , Pekka Paalanen , Sebastian Wick , Simon Ser , Victoria Brekenfeld , Xaver Hugl , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Maxime Ripard X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=3320; i=mripard@kernel.org; h=from:subject:message-id; bh=bz8WgYdyyKFKUw0Z8N3MeqXXAFbvhUkQzTihY9/0wRE=; b=owGbwMvMwCmsHn9OcpHtvjLG02pJDFm3RN0O8OQLBXZzvj0lFOqxS/2ce+TkmZdaFvoJ/Vv+S Sldq/JPx1QWBmFOBlkxRZYnMmGnl7cvrnKwX/kDZg4rE8gQBi5OAZhIqDpjw5ady5t6Xz5/rnLU 4LbTscJY9mnHzvlppJjVbU1ou3X4zd0C/r3rnFQXL7nia5TlEngij7HhfUN97x32sqyMLb66Ggm 8jDcebyxfJn3iwxZTxYB9s8SP1vWf0bWJdS6+LXm1cN/15fkA X-Developer-Key: i=mripard@kernel.org; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D drm_atomic_get_private_obj_state() allocates a new private object state by duplicating the current one and inserts it into the atomic commit as a single operation. However, a later change will need to insert a private object state into a commit without going through the full allocation and duplication path in drm_atomic_get_private_obj_state(). Extract the state insertion logic, including the array reallocation, into a new static drm_atomic_commit_set_private_obj_state() helper, and convert drm_atomic_get_private_obj_state() to use it. Reviewed-by: Daniel Stone Signed-off-by: Maxime Ripard --- drivers/gpu/drm/drm_atomic.c | 53 +++++++++++++++++++++++++++++--------------- 1 file changed, 35 insertions(+), 18 deletions(-) diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index 807b575ecc54..513e91ad2fdc 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -1096,4 +1096,33 @@ drm_atomic_private_obj_fini(struct drm_private_obj *obj) EXPORT_SYMBOL(drm_atomic_private_obj_fini); +static int drm_atomic_commit_set_private_obj_state(struct drm_atomic_commit *commit, + struct drm_private_obj *obj, + struct drm_private_state *obj_state) +{ + struct __drm_private_objs_state *arr; + int index, num_objs; + + drm_modeset_lock_assert_held(&obj->lock); + + num_objs = commit->num_private_objs + 1; + arr = krealloc_array(commit->private_objs, num_objs, + sizeof(*commit->private_objs), GFP_KERNEL | __GFP_ZERO); + if (!arr) + return -ENOMEM; + + commit->private_objs = arr; + index = commit->num_private_objs; + + commit->private_objs[index].state_to_destroy = obj_state; + commit->private_objs[index].old_state = obj->state; + commit->private_objs[index].new_state = obj_state; + commit->private_objs[index].ptr = obj; + obj_state->state = commit; + + commit->num_private_objs = num_objs; + + return 0; +} + /** * drm_atomic_get_private_obj_state - get private object state @@ -1112,6 +1141,5 @@ drm_atomic_get_private_obj_state(struct drm_atomic_commit *state, struct drm_private_obj *obj) { - int index, num_objs, ret; - struct __drm_private_objs_state *arr; + int ret; struct drm_private_state *obj_state; @@ -1127,24 +1155,13 @@ drm_atomic_get_private_obj_state(struct drm_atomic_commit *state, return ERR_PTR(ret); - num_objs = state->num_private_objs + 1; - arr = krealloc_array(state->private_objs, num_objs, - sizeof(*state->private_objs), GFP_KERNEL | __GFP_ZERO); - if (!arr) - return ERR_PTR(-ENOMEM); - - state->private_objs = arr; - index = state->num_private_objs; - obj_state = obj->funcs->atomic_duplicate_state(obj); if (!obj_state) return ERR_PTR(-ENOMEM); - state->private_objs[index].state_to_destroy = obj_state; - state->private_objs[index].old_state = obj->state; - state->private_objs[index].new_state = obj_state; - state->private_objs[index].ptr = obj; - obj_state->state = state; - - state->num_private_objs = num_objs; + ret = drm_atomic_commit_set_private_obj_state(state, obj, obj_state); + if (ret) { + obj->funcs->atomic_destroy_state(obj, obj_state); + return ERR_PTR(ret); + } drm_dbg_atomic(state->dev, -- 2.55.0