From nobody Wed Dec 17 07:31:31 2025 Received: from mail-pj1-f41.google.com (mail-pj1-f41.google.com [209.85.216.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8D6226CDDF for ; Wed, 8 May 2024 07:43:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.41 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715154186; cv=none; b=jNg22n4heI/jPC3dTxXfqwtZfzU47VUoZqzMTWDgfZ3PTLIXVuGxqeykyFjdI6lE+DldXSX4Gk4f0rEOo6oshrWAf3V2kAOEWwQliSZbUCkQ5+/oQjEpY3J28fOTbtTnZhMaam135xvMdPsfXyf0cV87OX/lIwRqcN6VDx//+zI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715154186; c=relaxed/simple; bh=d4UQf/ZsLZS7cvretx2WXvAFWLig4xky110hNJGk3Zc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hyITmG7nQED/8miqFILPV+kejt17JN30jzmsy7V8PisxiW1ucxoVOs2DCdtiErIaTZyUC0RbupsJ/WBtYDAIL38/JZmLcug40OPtJruS2yaUItumy7sf+W6J0Uj6oxtmM5wnjjDofI70bsV4ycaOb4nTmzcnjRPIVZdJaZgH4is= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=LBgoz7JA; arc=none smtp.client-ip=209.85.216.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="LBgoz7JA" Received: by mail-pj1-f41.google.com with SMTP id 98e67ed59e1d1-2b27c660174so2729333a91.1 for ; Wed, 08 May 2024 00:43:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1715154185; x=1715758985; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=wIlqiB/ZJyLpyyyQGB102ierEcV1ZXWEtzUdufZbr+0=; b=LBgoz7JAaDMFqYFuIPioP2gVlBeVB6J9DYRtY4AmooUSmgIuYR44FKL3IW4VEu1iiW 0x6d6cxR+buZz13FZ3fNkblRG89yj+kIz05yo6353ydLY+m67WQap6FREyX7weQXuZhQ giZD1fjs6XrscGg2Zk6ePfj3oBW5/pi5ttrAg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1715154185; x=1715758985; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=wIlqiB/ZJyLpyyyQGB102ierEcV1ZXWEtzUdufZbr+0=; b=NNkO5cVraWJjvZ0JiVnCmfdGi3O3LOgoftaDoVOuefmGfE4G+bATwsw43IzWfhnafI ASy+v7qVDezzNJqrPT4QgrHb/VccS6yQN2bezPOxPEf2Ihr4E0M3fty3igPrrTtIu0iR 6UIe7277ARCxJfJm7HLgIJ6JM9hLRg0+MyghJrwKcDchP98XrvnzUwaxRQnhzkSY+pCr JIexp8NVNs9SCC7W+CSRUYu4fe308jofqDap9VX1AEtjpcEO5qbXjqczDXG7Yhweud4+ hk5CxU6Nl65w3qIyRPdpiglDYrH5SP31MQtP++Yudwl0fKlmLVPjkJSACXX8O+gkTGHx hktA== X-Gm-Message-State: AOJu0YyapGKejj2aTYfW6eKxc8p+L6OK2uHSBVJdQR/11iLPjHyOPCrJ Pby9pI3PQFrG+gm3rt3y5Et4M8YxvcakP4L5hd3c4zq7kd6K8nQrGqKTmgVy5Q== X-Google-Smtp-Source: AGHT+IF092QUexa8q6Se5sPjVpV2rmvHb1BXFAsCgfpPU65gIEcc7ohGaINcYFa5GBGvAPDdjivYpw== X-Received: by 2002:a17:90a:b113:b0:2b1:534f:ea09 with SMTP id 98e67ed59e1d1-2b6166bfd77mr1811833a91.23.1715154184927; Wed, 08 May 2024 00:43:04 -0700 (PDT) Received: from tigerii.tok.corp.google.com ([2401:fa00:8f:203:ad4d:5f6c:6699:2da4]) by smtp.gmail.com with ESMTPSA id l5-20020a17090aec0500b002b328adaa40sm780011pjy.17.2024.05.08.00.43.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 May 2024 00:43:04 -0700 (PDT) From: Sergey Senozhatsky To: Andrew Morton , Minchan Kim Cc: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, Sergey Senozhatsky Subject: [PATCHv3 12/19] zram: support compression level comp config Date: Wed, 8 May 2024 16:42:05 +0900 Message-ID: <20240508074223.652784-13-senozhatsky@chromium.org> X-Mailer: git-send-email 2.45.0.rc1.225.g2a3ae87e7f-goog In-Reply-To: <20240508074223.652784-1-senozhatsky@chromium.org> References: <20240508074223.652784-1-senozhatsky@chromium.org> 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" Add support for compression level level=3DN comp configuration to comp_algorithm and recomp_algorithm knobs. Note that zram cannot verify ranges, it's a task of corresponding backends to make sure that level makes sense. Signed-off-by: Sergey Senozhatsky --- drivers/block/zram/zram_drv.c | 30 ++++++++++++++++++++++++++++-- 1 file changed, 28 insertions(+), 2 deletions(-) diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index bd8433363cbe..89a2eb37e26c 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -1013,6 +1013,12 @@ static int __comp_algorithm_store(struct zram *zram,= u32 prio, const char *buf) return 0; } =20 +static int comp_config_store(struct zram *zram, u32 prio, s32 level) +{ + zram->configs[prio].level =3D level; + return 0; +} + static ssize_t comp_algorithm_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -1030,6 +1036,7 @@ static ssize_t comp_algorithm_store(struct device *de= v, struct zram *zram =3D dev_to_zram(dev); char *args, *param, *val; char *alg =3D NULL; + s32 level =3D ZCOMP_CONFIG_NO_LEVEL; int ret; =20 args =3D skip_spaces(buf); @@ -1049,12 +1056,21 @@ static ssize_t comp_algorithm_store(struct device *= dev, alg =3D val; continue; } + + if (!strcmp(param, "level")) { + ret =3D kstrtoint(val, 10, &level); + if (ret) + return ret; + continue; + } } =20 if (!alg) return -EINVAL; =20 - ret =3D __comp_algorithm_store(zram, ZRAM_PRIMARY_COMP, alg); + ret =3D comp_config_store(zram, ZRAM_PRIMARY_COMP, level); + if (!ret) + ret =3D __comp_algorithm_store(zram, ZRAM_PRIMARY_COMP, alg); return ret ? ret : len; } =20 @@ -1087,6 +1103,7 @@ static ssize_t recomp_algorithm_store(struct device *= dev, int prio =3D ZRAM_SECONDARY_COMP; char *args, *param, *val; char *alg =3D NULL; + s32 level =3D ZCOMP_CONFIG_NO_LEVEL; int ret; =20 args =3D skip_spaces(buf); @@ -1107,6 +1124,13 @@ static ssize_t recomp_algorithm_store(struct device = *dev, return ret; continue; } + + if (!strcmp(param, "level")) { + ret =3D kstrtoint(val, 10, &level); + if (ret) + return ret; + continue; + } } =20 if (!alg) @@ -1115,7 +1139,9 @@ static ssize_t recomp_algorithm_store(struct device *= dev, if (prio < ZRAM_SECONDARY_COMP || prio >=3D ZRAM_MAX_COMPS) return -EINVAL; =20 - ret =3D __comp_algorithm_store(zram, prio, alg); + ret =3D comp_config_store(zram, prio, level); + if (!ret) + ret =3D __comp_algorithm_store(zram, prio, alg); return ret ? ret : len; } #endif --=20 2.45.0.rc1.225.g2a3ae87e7f-goog