From patchwork Mon May 6 07:58:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergey Senozhatsky X-Patchwork-Id: 13655042 Received: from mail-pf1-f177.google.com (mail-pf1-f177.google.com [209.85.210.177]) (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 CEEC3142629 for ; Mon, 6 May 2024 07:58:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.177 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714982341; cv=none; b=oyuo1eGxO9C+y4KYptmo6+55vAQLfa9uNncA1du1ZY/8eu+Zv/Jojfw45kepy32mD6q43NULAfN2I3avP6wVdaM2kzXr3uCNhZmLCIHlv0V8qUwMNgUGPw/UTxKvYhOxRYMLmsSnj41aberQN3Q0TEcf8Lccj9NkHdHyV0rX0lo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714982341; c=relaxed/simple; bh=UjfGmtLHYc+ZtfDBltxPDecVYYzszPmAvKAkfS30jKk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nx0YNMX9Lg5IQUNibG/dVCPRXFHZKOFYOl0J/ibB5b9FAOymcZ0dqCF4U/IDIzv6qrAInoeY3dhREjXNYCzpn5+6I9+mueqwb4ubB1aJ78BnPmcTX7vfBVOCm4KmYtqC6vFCi/ZR8R4maZOOYemtzcKc0OWQ7xTUYfjc/wCFpEs= 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=NKQQ2C1h; arc=none smtp.client-ip=209.85.210.177 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="NKQQ2C1h" Received: by mail-pf1-f177.google.com with SMTP id d2e1a72fcca58-6f45f1179c3so790374b3a.3 for ; Mon, 06 May 2024 00:58:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1714982337; x=1715587137; 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=Xs/oZbuIhbdeWVSnm1Y7/6OB6aLjJFlUrJpqF9jHmLk=; b=NKQQ2C1h5hvGqTvKG1hv2Zwv9i/g+7Kn5RkUgFJXp0o7olst5gJRgXDBy0T6uCZTi+ LlSPvg09PSDuYFdzmHexDsar0An9UmSnJi8De/bIP3EajXAYVpJX+0BAT/IpkAvWY2Hf l2OF2xh3Z4+bRVE1YCbwE5TuajaGSEqwV5AvU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714982337; x=1715587137; 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=Xs/oZbuIhbdeWVSnm1Y7/6OB6aLjJFlUrJpqF9jHmLk=; b=DoAucMcYXemN2b7NhTZoABBha+E8T38Vhe4UykrObPZ2TOW/tOZx8OhIvIweyzdp3S hIqrX+f+eThZ7j5Fo3yb7ZbTc/+sWW/6hZSXdTReXc0J301SvAGLLgUWUTsnQP1ybTmc 6xtM0rXQ6vphZTGMEdqo6VEn+GSHLH7sztWav4YYs4otAIQZHoIO2mAztNf6M3aTEr/0 +QLqbd2vSCYZ3vl04gpRS07wQXgt0IRVY/93c/HgQDXnooO2NGjIqaOXJU3Qdzp7XqAM cbakP+n0eDgJCEBUWvqDI8DTGjMG8V7m1knmxiXtkEAlesOLn3zDV84Zw8jg+eNaDU2T Py1g== X-Forwarded-Encrypted: i=1; AJvYcCUFJfvQinsnUoZIvfFQQissCF8nTLIMXswVtqYFf6HfXx9s+zDHJlvSp92lWILGUTsumyxCB4ZYhvPF/uj0BcAA/yBTUbggyxbB9Ps= X-Gm-Message-State: AOJu0YwnmCM4mI/FtUraq32EgJ6CgS1Mev//sRdOMjLMhafoU2bKhwZg rlS64b7L+J+D0LxbxnMX4ByhChJxnIcPBJsU+Gx+UoatmjG1RBHqTeJc1VVkBQ== X-Google-Smtp-Source: AGHT+IGy/4lD/Gu1ZGaiNMwKg7zR1w+EoUSMKcYS2iKj3KJder89nFxCHISjC6pco3raQDM3dE7LMg== X-Received: by 2002:a05:6a20:c90d:b0:1af:9321:8ac3 with SMTP id gx13-20020a056a20c90d00b001af93218ac3mr4829178pzb.36.1714982337219; Mon, 06 May 2024 00:58:57 -0700 (PDT) Received: from tigerii.tok.corp.google.com ([2401:fa00:8f:203:4e24:10c3:4b65:e126]) by smtp.gmail.com with ESMTPSA id h6-20020a170902f54600b001ec64b128dasm7633772plf.129.2024.05.06.00.58.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 May 2024 00:58:56 -0700 (PDT) From: Sergey Senozhatsky To: Andrew Morton , Minchan Kim Cc: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, Sergey Senozhatsky Subject: [PATCHv2 05/17] zram: add zstd compression backend support Date: Mon, 6 May 2024 16:58:18 +0900 Message-ID: <20240506075834.302472-6-senozhatsky@chromium.org> X-Mailer: git-send-email 2.45.0.rc1.225.g2a3ae87e7f-goog In-Reply-To: <20240506075834.302472-1-senozhatsky@chromium.org> References: <20240506075834.302472-1-senozhatsky@chromium.org> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Signed-off-by: Sergey Senozhatsky --- drivers/block/zram/Kconfig | 11 ++++ drivers/block/zram/Makefile | 1 + drivers/block/zram/backend_zstd.c | 97 +++++++++++++++++++++++++++++++ drivers/block/zram/backend_zstd.h | 10 ++++ drivers/block/zram/zcomp.c | 4 ++ 5 files changed, 123 insertions(+) create mode 100644 drivers/block/zram/backend_zstd.c create mode 100644 drivers/block/zram/backend_zstd.h diff --git a/drivers/block/zram/Kconfig b/drivers/block/zram/Kconfig index 0d890a8d2dc4..71cd0d5d8f35 100644 --- a/drivers/block/zram/Kconfig +++ b/drivers/block/zram/Kconfig @@ -32,6 +32,12 @@ config ZRAM_BACKEND_LZ4HC select LZ4HC_COMPRESS select LZ4_DECOMPRESS +config ZRAM_BACKEND_ZSTD + bool "zstd compression support" + depends on ZRAM + select ZSTD_COMPRESS + select ZSTD_DECOMPRESS + choice prompt "Default zram compressor" default ZRAM_DEF_COMP_LZORLE @@ -53,6 +59,10 @@ config ZRAM_DEF_COMP_LZ4HC bool "lz4hc" depends on ZRAM_BACKEND_LZ4HC +config ZRAM_DEF_COMP_ZSTD + bool "zstd" + depends on ZRAM_BACKEND_ZSTD + endchoice config ZRAM_DEF_COMP @@ -61,6 +71,7 @@ config ZRAM_DEF_COMP default "lzo" if ZRAM_DEF_COMP_LZO default "lz4" if ZRAM_DEF_COMP_LZ4 default "lz4hc" if ZRAM_DEF_COMP_LZ4HC + default "zstd" if ZRAM_DEF_COMP_ZSTD default "unset-value" config ZRAM_WRITEBACK diff --git a/drivers/block/zram/Makefile b/drivers/block/zram/Makefile index 815b45471c7d..053fe35e346b 100644 --- a/drivers/block/zram/Makefile +++ b/drivers/block/zram/Makefile @@ -3,6 +3,7 @@ obj-$(CONFIG_ZRAM_BACKEND_LZO) += backend_lzorle.o backend_lzo.o obj-$(CONFIG_ZRAM_BACKEND_LZ4) += backend_lz4.o obj-$(CONFIG_ZRAM_BACKEND_LZ4HC) += backend_lz4hc.o +obj-$(CONFIG_ZRAM_BACKEND_ZSTD) += backend_zstd.o zram-y := zcomp.o zram_drv.o diff --git a/drivers/block/zram/backend_zstd.c b/drivers/block/zram/backend_zstd.c new file mode 100644 index 000000000000..4da49626f110 --- /dev/null +++ b/drivers/block/zram/backend_zstd.c @@ -0,0 +1,97 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include +#include +#include +#include + +#include "backend_zstd.h" + +struct zstd_ctx { + zstd_cctx *cctx; + zstd_dctx *dctx; + void *cctx_mem; + void *dctx_mem; + s32 level; +}; + +static void zstd_destroy(void *ctx) +{ + struct zstd_ctx *zctx = ctx; + + vfree(zctx->cctx_mem); + vfree(zctx->dctx_mem); + kfree(zctx); +} + +static void *zstd_create(void) +{ + zstd_parameters params; + struct zstd_ctx *ctx; + size_t sz; + + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return NULL; + + ctx->level = ZSTD_defaultCLevel(); + params = zstd_get_params(ctx->level, 0); + sz = zstd_cctx_workspace_bound(¶ms.cParams); + ctx->cctx_mem = vzalloc(sz); + if (!ctx->cctx_mem) + goto error; + + ctx->cctx = zstd_init_cctx(ctx->cctx_mem, sz); + if (!ctx->cctx) + goto error; + + sz = zstd_dctx_workspace_bound(); + ctx->dctx_mem = vzalloc(sz); + if (!ctx->dctx_mem) + goto error; + + ctx->dctx = zstd_init_dctx(ctx->dctx_mem, sz); + if (!ctx->dctx) + goto error; + + return ctx; + +error: + zstd_destroy(ctx); + return NULL; +} + +static int zstd_compress(void *ctx, const unsigned char *src, + unsigned char *dst, size_t *dst_len) +{ + struct zstd_ctx *zctx = ctx; + const zstd_parameters params = zstd_get_params(zctx->level, 0); + size_t ret; + + ret = zstd_compress_cctx(zctx->cctx, dst, *dst_len, + src, PAGE_SIZE, ¶ms); + if (zstd_is_error(ret)) + return -EINVAL; + *dst_len = ret; + return 0; +} + +static int zstd_decompress(void *ctx, const unsigned char *src, size_t src_len, + unsigned char *dst) +{ + struct zstd_ctx *zctx = ctx; + size_t ret; + + ret = zstd_decompress_dctx(zctx->dctx, dst, PAGE_SIZE, src, src_len); + if (zstd_is_error(ret)) + return -EINVAL; + return 0; +} + +struct zcomp_backend backend_zstd = { + .compress = zstd_compress, + .decompress = zstd_decompress, + .create_ctx = zstd_create, + .destroy_ctx = zstd_destroy, + .name = "zstd", +}; diff --git a/drivers/block/zram/backend_zstd.h b/drivers/block/zram/backend_zstd.h new file mode 100644 index 000000000000..75d2d2c02768 --- /dev/null +++ b/drivers/block/zram/backend_zstd.h @@ -0,0 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#ifndef __BACKEND_ZSTD_H__ +#define __BACKEND_ZSTD_H__ + +#include "zcomp.h" + +extern struct zcomp_backend backend_zstd; + +#endif /* __BACKEND_ZSTD_H__ */ diff --git a/drivers/block/zram/zcomp.c b/drivers/block/zram/zcomp.c index f04f5844a23c..c16eb038f608 100644 --- a/drivers/block/zram/zcomp.c +++ b/drivers/block/zram/zcomp.c @@ -19,6 +19,7 @@ #include "backend_lzorle.h" #include "backend_lz4.h" #include "backend_lz4hc.h" +#include "backend_zstd.h" static struct zcomp_backend *backends[] = { #if IS_ENABLED(CONFIG_ZRAM_BACKEND_LZO) @@ -30,6 +31,9 @@ static struct zcomp_backend *backends[] = { #endif #if IS_ENABLED(CONFIG_ZRAM_BACKEND_LZ4HC) &backend_lz4hc, +#endif +#if IS_ENABLED(CONFIG_ZRAM_BACKEND_ZSTD) + &backend_zstd, #endif NULL };