From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 55D7438F923 for ; Fri, 12 Jun 2026 18:30:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781289031; cv=none; b=mlGCY3E1/74ZymlG+GVLh+lVR3pJADKbm9xiWWMCxIWk5YqtM4szej34sUtWF7btckBQBZgBSx6Nk9XwH7Isalk1UE9RlsyVUravcHRnW/82GuGCgi4WiB2ZVD8oShX4DAPszkzWCp4RJx44FEEPjjdVAMNc6r06/GY+sRozJSs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781289031; c=relaxed/simple; bh=ns6ZF2Athx6EXhPPsCUzdeEz8OHVy14bl5aTVdNnAU0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=GxQRuzOLjxvdMVozdG8r3/CklbSxb4b7RPHuZfPgueyKuwA8RjFi3bdSAefeHIg8LliwicxAkpO1VUUXaT5unWgeMPHWYLHPJRcQtwzeDPn/9w213va+dMQz6r/2ekvbxO+GNBhnJesQgMPwABvyTtlKGKNuo+ZvHtbowHPy4YU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=ivZnQjum; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=GoCy7M90; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="ivZnQjum"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="GoCy7M90" Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 65CGVeaF4112816 for ; Fri, 12 Jun 2026 18:30:29 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= VAc5Ikptycwe+SAdBBV6cT/v4cLIQIAkYHbY8Re0nJ8=; b=ivZnQjumAYn2ffrl Is7Sqx+bhSIzdvC7QxA7pmrNJEMhayWPE0cI+oG5wiLKNDeGlQayknv61BqZtUEf 67MjnN7JcLD5O8FfZ+hDb5kLXtfidZb6E6gg1YmI4eFOmmjuc2UKM//YSgSWs/R0 +seWyK/ZwXEJhtPfySsS6VMAkDWHI7Q4SdFa+SIjW/wY0aF+LEuO4M2bFJxRXjfa y12GojzejfbWsQSiK5GYXPfHPu+OOJTAxo11p2LznsRppvPat9ihKmXDafdqicG0 g1AhstVX2RVdddrKeSIhnvNsk2BxVw6kF2SD+uqShvJaTNzGfGk5hI7sBbs1feBs RuRDVQ== Received: from mail-qk1-f200.google.com (mail-qk1-f200.google.com [209.85.222.200]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4er30gc2pm-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Fri, 12 Jun 2026 18:30:29 +0000 (GMT) Received: by mail-qk1-f200.google.com with SMTP id af79cd13be357-9157ae36434so181046085a.0 for ; Fri, 12 Jun 2026 11:30:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1781289028; x=1781893828; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=VAc5Ikptycwe+SAdBBV6cT/v4cLIQIAkYHbY8Re0nJ8=; b=GoCy7M90rpHsLKhLPjp89h3vZuO0e5aXnMI+mY/RyGeXPcrTqnxUCMJVc86R6bK2sn 7F4wjttpjxIVpvnIjOzxImq/9sg0riqDb7rOERgRuvMdE71IuKvvcHkK2gEPgn6ydrLK OEJRQIy4YXMAofV/fjnOhwCa51mNtyVIe7SfL4jNbynlaC96DIFYql33BhDIBmfRmIii INAO5x6ntdPXRCdyMu7ivQc71aSTp0szuVADfDs9IOfP2/t0QGEJi4sWZbx65kZcgwy4 0Sp+JTaO4rlTtN47/BDUjsbM+U+kHkFGBs0JKjDMnurY9xHjtCK8cfBjPLsOApBkSFtO ucQQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1781289028; x=1781893828; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=VAc5Ikptycwe+SAdBBV6cT/v4cLIQIAkYHbY8Re0nJ8=; b=Q+zcn3uF0lLoX3kGzOP11OPO3CBjUKZmjcAmlcpDDwH/ztk+GJwa0rb+KqcUvEvhrg NB5Ep6tmhMWtqXS6LEEmwakAQTR1SyRhcryI0/8IAqMAkz3o0vAbe57mf1PaQTxA9Dz1 x4GC2f7UP8TvYmACqkccKnIjOISCucxOgzZzXtmTAtd1+zreyjkVLVFSnseoq3B9/Coa mYZ9LbMgjljjP0RjKX2QP5JYIHRA3tj1ToLfcFc1SYBpkJw/EgEWyQoCRTtOl65adE30 i9ui26JdRJ306vlI5r1Jsku58yM3sp1iAKoay3HkI6miiAM8S81OAbdWcad9C5uDYGZO g2Pg== X-Forwarded-Encrypted: i=1; AFNElJ+1GGeLyEkMvyuCUSG0HpHXEXor8VAGuLDB/6qHkh9uWpvzFKKamTGuYWXMoHA82zX8GBCdjaNRMMQt16o=@vger.kernel.org X-Gm-Message-State: AOJu0YymhSISQfqj8jvEWnLIeZTh8pr4Htx820/CwOeL9SxLKQcBGqgZ vQmvSbIWxPmBWlpFWj3mv+j+rNZf5uMWpy2WuQxiVw9ojt+2kEmCIPCSlbeW//qHn6Y1kyBprAU e3m5AWgF7zf6RY80z46k++8NTO2jrWilJ18Kx2Bn2ODKRBP8SZ5paUsDJq5q0NfmRLMo= X-Gm-Gg: Acq92OEU+dRH7c2aqswGF7YqXJh0Z+tPWUvWv9ja6PKvFPkTqLsOtjXgQns1UXM6JXP +hNGeGtmNtedpfeC9ssPYbI+Uc40k+2Ctphw6Kpdk0xbf6WeUWxl59V/kofHTDp2Yy8y3oSBdFb 1QSWhzT2Z1n8ZHgu0WKHKtDEkoqgIT4WNmltqsld21NBRjgp0v5FutjUiyRC2yD+atBRgYvdzS+ S4UuVMz6bFfm5jl4suTxmZmrVnOEIq9sxY2U5xdAINFtSNHA7BmKmOS/lkMxf+uT7KVU0dsbFWv nqyFC/z2wQTFZLw9VkrKmnQfGfJez0lnah0VCJsqNnwG6cWlMbJ/yXAek2dmL1mJoD+p0AeiCd+ 1hcE+zvWLkNlaQYdDFiqwClYTyWehZLMpbt9jTvplMSdFTnLFCrt1PmS+7ZRfeRknLz6uRBVNGZ Rw+MzzazElpOHAyZ7wqhwMnFlMcUyQ4b+c1q0= X-Received: by 2002:a05:620a:bc8:b0:915:a73e:3544 with SMTP id af79cd13be357-917f1c56720mr144560385a.56.1781289024477; Fri, 12 Jun 2026 11:30:24 -0700 (PDT) X-Received: by 2002:a05:620a:bc8:b0:915:a73e:3544 with SMTP id af79cd13be357-917f1c56720mr144477285a.56.1781289020618; Fri, 12 Jun 2026 11:30:20 -0700 (PDT) Received: from umbar.lan (2001-14ba-a073-af00-264b-feff-fe8b-be8a.rev.dnainternet.fi. [2001:14ba:a073:af00:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5ad2e161fefsm742173e87.8.2026.06.12.11.30.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Jun 2026 11:30:19 -0700 (PDT) From: Dmitry Baryshkov Date: Fri, 12 Jun 2026 21:30:11 +0300 Subject: [PATCH v6 1/9] drm/managed: implement managed versions of kzalloc_obj/objs() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260612-wb-drop-encoder-v6-1-9f3a54f81310@oss.qualcomm.com> References: <20260612-wb-drop-encoder-v6-0-9f3a54f81310@oss.qualcomm.com> In-Reply-To: <20260612-wb-drop-encoder-v6-0-9f3a54f81310@oss.qualcomm.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Harry Wentland , Leo Li , Rodrigo Siqueira , Alex Deucher , =?utf-8?q?Christian_K=C3=B6nig?= , Liviu Dudau , Laurent Pinchart , Tomi Valkeinen , Kieran Bingham , Geert Uytterhoeven , Magnus Damm , Dave Stevenson , =?utf-8?q?Ma=C3=ADra_Canal?= , Raspberry Pi Kernel Maintenance Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, linux-renesas-soc@vger.kernel.org X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1773; i=dmitry.baryshkov@oss.qualcomm.com; h=from:subject:message-id; bh=ns6ZF2Athx6EXhPPsCUzdeEz8OHVy14bl5aTVdNnAU0=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBqLFA2BP6d00ejrEHxJYdHp2X9IJejczYLfY75d jXdts+qMaCJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCaixQNgAKCRCLPIo+Aiko 1YyuB/4/+1uiqA2fryPtK0Q7ctr1kG3ePgcUSkHFnblElLxP9p5KAV0NVSrsZu64PP9Uw8QhEHn eku5gVTB4fteWoAdmRV6MqED5jUCgtzKxXw31I6q2yE0HMzROPxsuZqjck649m6vQ+6gjWPoIYP tSvCAE8vpvPK2pQ8s47BDO71QWO174Xdq0Kyv6QPCsjDT1q5muBBfuIckdqMamMRRmXbJArYrNK GKbQ97M3DoUAW3s0S8dCBmtmiaDK2EvYKKZZ6xfYMjkleX/ieanilprQ/xFXxojPr8xMZnF96Zd t+bDLo/Q7QnIlQtPjN+RW8IeT2wx6PpYUovOoPNAnHFW6kFr X-Developer-Key: i=dmitry.baryshkov@oss.qualcomm.com; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A X-Proofpoint-Spam-Info: AW1haW4tMjYwNjEyMDE3MyBTYWx0ZWRfXxdcjmGOQAdrl gatwpVhsFWN61n+sU/TwDCy7nv8XyhQnjiY7fHiEDN0+Ab12XWsbh1wEkF0S2cdlRXb5dlFRp2x rM4EqBO3/VEDKtkSyBee56KNuiN/FrA= X-Proofpoint-GUID: 5ACJD8_fA0-gpc8NJrG6AslhcITHANMu X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjEyMDE3MyBTYWx0ZWRfX9GqaN1Frw7q7 2B1Fg0ngfK9V7RimY+v6xcnC6xlC055vEQAXsQJs6tv8xYYfAsWmlnaCW+mEYSVsq10YfrNHGel uW5CtglN969zMYVrVNzVJU9yrb9q3mK+ghKaScuC2dRRpjns4EqqsG2BmgGhDoTx5IYGp56FHoc WGeTaJix3AtsNYekBwODxqZa/NsNtG9SrdvhEQn4m9wbbOBeA62HqVmLY8mLzDAj//+X1lbJMu2 b52PHsQRZLh48FakI7dSLipHbI9ILxlxt3SfQy35L50f5FbQ9DSfOPA7KfirVoeE08GSZc/FuyL x5Cstkq0YHnNFkfjcuNdJ401PAX0LFPsrrJ2qahHJbZyG0rdTWID1NRGsblYiTZqIQAMk/x4b+H HINZsXIfaab4+yov0jHkTjVuTrAmCJxmxZICIHuzKS4CX4VEFUIXSN/dD+7xn8y0wKZJj1oDQl4 11/sRKJnTobqztqbLSw== X-Authority-Analysis: v=2.4 cv=evnvCIpX c=1 sm=1 tr=0 ts=6a2c5045 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=EUspDBNiAAAA:8 a=6OF_V-VfZv2apoI2bYYA:9 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-ORIG-GUID: 5ACJD8_fA0-gpc8NJrG6AslhcITHANMu X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-12_02,2026-06-12_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 bulkscore=0 priorityscore=1501 phishscore=0 spamscore=0 impostorscore=0 malwarescore=0 adultscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606040000 definitions=main-2606120173 The kzalloc_obj() and kzalloc_objs() functions proven to be useful and widely used for the reset of the kernel. Implement a drm_device-managed versions of those macros to mix the nice interface with the automatic freeing of the pointers. Note: the original macros accept optional GFP_foo arguments. They are skipped for now, making all allocations use GFP_KERNEL. If necessary, support for overriding the GFP type can be introduced later. Signed-off-by: Dmitry Baryshkov --- include/drm/drm_managed.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/include/drm/drm_managed.h b/include/drm/drm_managed.h index 72d0d68be226..79049bec277d 100644 --- a/include/drm/drm_managed.h +++ b/include/drm/drm_managed.h @@ -105,6 +105,28 @@ static inline void *drmm_kcalloc(struct drm_device *dev, return drmm_kmalloc_array(dev, n, size, flags | __GFP_ZERO); } +/** + * drmm_kzalloc_objs - &drm_device-managed kzalloc_objs() + * @dev: DRM device + * @p: Variable or type to allocate an array of + * @count: How many elements in the array + * + * Returns: newly allocated pointer to the zeroed array of @P on success, or + * NULL on failure. + */ +#define drmm_kzalloc_objs(dev, p, count) \ + drmm_kcalloc(dev, count, sizeof(typeof(p)), GFP_KERNEL) + +/** + * drmm_kzalloc_obj - &drm_device-managed kzalloc_obj() + * @dev: DRM device + * @p: Variable or type to allocate + * + * Returns: newly allocated pointer to a @p on success, or NULL on failure. + */ +#define drmm_kzalloc_obj(dev, P) \ + drmm_kzalloc_objs(dev, P, 1) + char *drmm_kstrdup(struct drm_device *dev, const char *s, gfp_t gfp); void drmm_kfree(struct drm_device *dev, void *data); -- 2.47.3