From nobody Sun Oct 5 18:16:40 2025 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) (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 42ECB223328; Fri, 1 Aug 2025 04:37:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.10 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754023023; cv=none; b=IXg1m2vVgjf1jcG8dG7QRnaYkcrlqVHyPRiNVedNIwIMMxPUPkaeBVY4/1/UxzSe0WfpBbzVIjFoDHLSTOlufzkhqh+H9j3khSt687woIh4B7rNCZvT0I4/8Req1XmNyTUw/7PBEv2NDJ53wuRUSsGZaTWNQzk84T+Q/hWmB+qQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754023023; c=relaxed/simple; bh=jBYqtIdn2g/qmc5lPRJuQdSpcp+B6gPWEJvQ/KJK+XM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=JAPAYfAwpUvwqwdQ71r/W9FsSFZHKP+yXnP2akDqEoP6KxwuNu/GcNv7hHmCENtO9g9sHmoRKzxuBF3/h7ly02zq3OwahiHWFM5w9GF54WxVW2CMhXWyQwBHPfs1xZ7fwcnpfzxkHLUflL2U4McmBlYvc0RhwzPSCBh1A2sbopY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=PIQlGDnK; arc=none smtp.client-ip=198.175.65.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="PIQlGDnK" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1754023021; x=1785559021; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=jBYqtIdn2g/qmc5lPRJuQdSpcp+B6gPWEJvQ/KJK+XM=; b=PIQlGDnKTUGwlcPor3Rr6q6ig+YvHQ5y7DSf+gwZhp6S9ndybHeRUG9v T1dG1ft/0iaG82aobjwI/j72yAQNXM/D+8QQFKSYWCb4cIrFQAacOxN4S GREe6o8itd9k9Vmh8k8arpKk1sqcWlMqgniK2P4JGpikQNCsqls5eoS9e AGTzPXJ0svk4lmydAEItnpvY7UDv8Vi3hX2fEdA0XNvl10k379AXvJj55 n+HLI4WEYM2UJAErDyl06l1qd5GAJ0OEb3fO+bnQtBwkJICj3lX/qOgIs IWVgI7iRXVWbvmeQixSY+Ft1Ojec2Hg2d12VAJjSqWyOUHv4U39nMpcQ4 Q==; X-CSE-ConnectionGUID: 6kbD6ELzSbOASLJHOExurA== X-CSE-MsgGUID: Bv2dv1GhRqSEMr6kd/GpSA== X-IronPort-AV: E=McAfee;i="6800,10657,11508"; a="73820374" X-IronPort-AV: E=Sophos;i="6.17,255,1747724400"; d="scan'208";a="73820374" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Jul 2025 21:36:46 -0700 X-CSE-ConnectionGUID: 67ys5ai6RRu463egZMl72A== X-CSE-MsgGUID: LkB5nBh/SRCjfrvI35zSqg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.17,255,1747724400"; d="scan'208";a="163796297" Received: from jf5300-b11a338t.jf.intel.com ([10.242.51.115]) by orviesa008.jf.intel.com with ESMTP; 31 Jul 2025 21:36:46 -0700 From: Kanchana P Sridhar To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, hannes@cmpxchg.org, yosry.ahmed@linux.dev, nphamcs@gmail.com, chengming.zhou@linux.dev, usamaarif642@gmail.com, ryan.roberts@arm.com, 21cnbao@gmail.com, ying.huang@linux.alibaba.com, akpm@linux-foundation.org, senozhatsky@chromium.org, linux-crypto@vger.kernel.org, herbert@gondor.apana.org.au, davem@davemloft.net, clabbe@baylibre.com, ardb@kernel.org, ebiggers@google.com, surenb@google.com, kristen.c.accardi@intel.com, vinicius.gomes@intel.com Cc: wajdi.k.feghali@intel.com, vinodh.gopal@intel.com, kanchana.p.sridhar@intel.com Subject: [PATCH v11 18/24] crypto: acomp - Add crypto_acomp_batch_size() to get an algorithm's batch-size. Date: Thu, 31 Jul 2025 21:36:36 -0700 Message-Id: <20250801043642.8103-19-kanchana.p.sridhar@intel.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20250801043642.8103-1-kanchana.p.sridhar@intel.com> References: <20250801043642.8103-1-kanchana.p.sridhar@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This commit adds a get_batch_size() interface to: struct acomp_alg struct crypto_acomp A crypto_acomp compression algorithm that supports batching of compressions and decompressions must provide an implementation for this API to return the maximum batch-size that the compressor supports, so that kernel users of crypto_acomp, such as zswap, can allocate resources for submitting multiple compress/decompress jobs that can be batched, and invoke batching of [de]compressions. A new helper function acomp_has_async_batching() can be invoked to query if a crypto_acomp implements get_batch_size(). The new crypto_acomp_batch_size() API uses this helper function to return the batch-size for compressors that implement get_batch_size(). If no implementation is provided by the crypto_acomp, a default of "1" is returned for the batch-size. zswap can invoke crypto_acomp_batch_size() to query the maximum number of requests that can be batch [de]compressed. Based on this, zswap can use the minimum of any zswap-specific upper limits for batch-size and the compressor's max batch-size, to allocate batching resources. Signed-off-by: Kanchana P Sridhar --- crypto/acompress.c | 1 + include/crypto/acompress.h | 27 +++++++++++++++++++++++++++ include/crypto/internal/acompress.h | 3 +++ 3 files changed, 31 insertions(+) diff --git a/crypto/acompress.c b/crypto/acompress.c index be28cbfd22e32..f440724719655 100644 --- a/crypto/acompress.c +++ b/crypto/acompress.c @@ -105,6 +105,7 @@ static int crypto_acomp_init_tfm(struct crypto_tfm *tfm) =20 acomp->compress =3D alg->compress; acomp->decompress =3D alg->decompress; + acomp->get_batch_size =3D alg->get_batch_size; acomp->reqsize =3D alg->base.cra_reqsize; =20 acomp->base.exit =3D crypto_acomp_exit_tfm; diff --git a/include/crypto/acompress.h b/include/crypto/acompress.h index 0312322d2ca03..898104745cd24 100644 --- a/include/crypto/acompress.h +++ b/include/crypto/acompress.h @@ -108,6 +108,8 @@ struct acomp_req { * * @compress: Function performs a compress operation * @decompress: Function performs a de-compress operation + * @get_batch_size: Maximum batch-size for batching compress/decompress + * operations. * @reqsize: Context size for (de)compression requests * @fb: Synchronous fallback tfm * @base: Common crypto API algorithm data structure @@ -115,6 +117,7 @@ struct acomp_req { struct crypto_acomp { int (*compress)(struct acomp_req *req); int (*decompress)(struct acomp_req *req); + unsigned int (*get_batch_size)(void); unsigned int reqsize; struct crypto_tfm base; }; @@ -205,6 +208,13 @@ static inline bool acomp_is_async(struct crypto_acomp = *tfm) CRYPTO_ALG_ASYNC; } =20 +static inline bool acomp_has_async_batching(struct crypto_acomp *tfm) +{ + return (acomp_is_async(tfm) && + (crypto_comp_alg_common(tfm)->base.cra_flags & CRYPTO_ALG_TYPE_ACOMPRESS= ) && + tfm->get_batch_size); +} + static inline struct crypto_acomp *crypto_acomp_reqtfm(struct acomp_req *r= eq) { return __crypto_acomp_tfm(req->base.tfm); @@ -545,6 +555,23 @@ int crypto_acomp_compress(struct acomp_req *req); */ int crypto_acomp_decompress(struct acomp_req *req); =20 +/** + * crypto_acomp_batch_size() -- Get the algorithm's batch size + * + * Function returns the algorithm's batch size for batching operations + * + * @tfm: ACOMPRESS tfm handle allocated with crypto_alloc_acomp() + * + * Return: crypto_acomp's batch size. + */ +static inline unsigned int crypto_acomp_batch_size(struct crypto_acomp *tf= m) +{ + if (acomp_has_async_batching(tfm)) + return tfm->get_batch_size(); + + return 1; +} + static inline struct acomp_req *acomp_request_on_stack_init( char *buf, struct crypto_acomp *tfm) { diff --git a/include/crypto/internal/acompress.h b/include/crypto/internal/= acompress.h index ffffd88bbbad3..2325ee18e7a10 100644 --- a/include/crypto/internal/acompress.h +++ b/include/crypto/internal/acompress.h @@ -28,6 +28,8 @@ * * @compress: Function performs a compress operation * @decompress: Function performs a de-compress operation + * @get_batch_size: Maximum batch-size for batching compress/decompress + * operations. * @init: Initialize the cryptographic transformation object. * This function is used to initialize the cryptographic * transformation object. This function is called only once at @@ -46,6 +48,7 @@ struct acomp_alg { int (*compress)(struct acomp_req *req); int (*decompress)(struct acomp_req *req); + unsigned int (*get_batch_size)(void); int (*init)(struct crypto_acomp *tfm); void (*exit)(struct crypto_acomp *tfm); =20 --=20 2.27.0