From nobody Wed Feb 11 02:54:36 2026 Received: from mail-pl1-f178.google.com (mail-pl1-f178.google.com [209.85.214.178]) (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 7EEDA5BAC1 for ; Wed, 15 May 2024 07:17:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.178 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715757439; cv=none; b=dHYRL8u5UavhzOTuLUjySADW2zsYqhNMCI+08pgk/0fGFTbzNOqQhfCde5ItIHxEoCaTn2v10CYtAoIm783kumla1PobkQP9+BHAgb2VxXWCLWrNR1m6+dniRvKgSI7slQ9+KIq2QOr18oUYBEj2H7gqNPKCkFdkBmLaeZyGRzQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715757439; c=relaxed/simple; bh=a+rQHeyHWJr5E88fLAaNVtGpfAm1FcfbIk5kcHXBMNA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bgUSj7ViCeX77l3bsf8SD1kf1Zl93nLVESqYnRfaqZXQ2rU/S79w/YWmBoyjmSuL/tUVYF/tQinbLlNFhn4fy+nXOMXsrV835oAH0KVF6Nq4fWbyYsggu+yIrkop++KFRgiDUKJxWWzjkNDI2asPOy1WwHt+8Qur8GdVWBADMms= 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=lJ+dQfGo; arc=none smtp.client-ip=209.85.214.178 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="lJ+dQfGo" Received: by mail-pl1-f178.google.com with SMTP id d9443c01a7336-1eb24e3a2d9so57050095ad.1 for ; Wed, 15 May 2024 00:17:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1715757437; x=1716362237; 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=R1BvSeNbTbBx82yan2V/RhWZavK2/Nwn3AwN6PoYkyI=; b=lJ+dQfGoknPf202DLVf0jTPVBcrR/7DNOXRUXwWsOokvW/u7EuVnY4BSJBtkugtJal W/vi8b/waDV2pZZdsTq7tQ1fwnxgBRQRpJa968Tx4lpkJ3N5/q2Bv0OFg1+r1G7gxSh9 mM55uHd8l3Ihr2n7khEHvDJUaZg0kBh6vCql0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1715757437; x=1716362237; 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=R1BvSeNbTbBx82yan2V/RhWZavK2/Nwn3AwN6PoYkyI=; b=lCno1HyEB24RNXDjXG6U5DY7vRsbt1Z8+9K+X1weSC/l62hEG4HXzKLDXDNivjSVA2 qQYZglquu4MX/A+/Uz/OKYC5dwo6ddOxnm141rq+GE3h9zcc6lJSk3QWfTvSOzedp3QZ /jR/W4mD6+V1dH1SEQz/OQJ1AZxn5GvUuzD5i6wiK3W5/8F16aOlFcY5OFqIVV0YvtrO w7KFGs/v5g8zPjif6zF8M8f0tZfCcLkTQJBPqPdGNZL8yS1kyExTEaD1bdEhMcZ/1zjM HJ7nCXn91LCiUvLouGL3snDB7kvg43jKJEGlTTsIfnbH1ZAMUTh7c4qsdmzXmcY4U7Ws BQEA== X-Gm-Message-State: AOJu0Yz9dHFYGZ4xTXoB1ctoCQJAiCKv9AlFGmplRtCx60xOgBj3JgB7 MADiXFC7jxfnzNYfQ+2Pxs8efwoBS24WCgrjJGWNtiuN15WM/a8MPIMSNpY1bw== X-Google-Smtp-Source: AGHT+IHl9yzwzSALZfi0o/HPHNzCxu6wZ+RNh+cMmfX5oJ73uVNFYO9l4NG6YzfeqIT88y6WcZ1L0A== X-Received: by 2002:a17:902:e74a:b0:1e0:2977:9dfc with SMTP id d9443c01a7336-1ef43f4ea08mr235269795ad.55.1715757436880; Wed, 15 May 2024 00:17:16 -0700 (PDT) Received: from tigerii.tok.corp.google.com ([2401:fa00:8f:203:111d:a618:3172:cd5b]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1ef0c136d53sm110941605ad.254.2024.05.15.00.17.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 May 2024 00:17:16 -0700 (PDT) From: Sergey Senozhatsky To: Andrew Morton , Minchan Kim Cc: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, Sergey Senozhatsky Subject: [PATCHv4 08/21] zram: add 842 compression backend support Date: Wed, 15 May 2024 16:12:45 +0900 Message-ID: <20240515071645.1788128-9-senozhatsky@chromium.org> X-Mailer: git-send-email 2.45.0.rc1.225.g2a3ae87e7f-goog In-Reply-To: <20240515071645.1788128-1-senozhatsky@chromium.org> References: <20240515071645.1788128-1-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 s/w 842 compression support. Signed-off-by: Sergey Senozhatsky --- drivers/block/zram/Kconfig | 11 ++++++ drivers/block/zram/Makefile | 1 + drivers/block/zram/backend_842.c | 68 ++++++++++++++++++++++++++++++++ drivers/block/zram/backend_842.h | 10 +++++ drivers/block/zram/zcomp.c | 4 ++ 5 files changed, 94 insertions(+) create mode 100644 drivers/block/zram/backend_842.c create mode 100644 drivers/block/zram/backend_842.h diff --git a/drivers/block/zram/Kconfig b/drivers/block/zram/Kconfig index 9dedd2edfb28..1e0e7e5910b8 100644 --- a/drivers/block/zram/Kconfig +++ b/drivers/block/zram/Kconfig @@ -44,6 +44,12 @@ config ZRAM_BACKEND_DEFLATE select ZLIB_DEFLATE select ZLIB_INFLATE =20 +config ZRAM_BACKEND_842 + bool "842 compression support" + depends on ZRAM + select 842_COMPRESS + select 842_DECOMPRESS + choice prompt "Default zram compressor" default ZRAM_DEF_COMP_LZORLE @@ -73,6 +79,10 @@ config ZRAM_DEF_COMP_DEFLATE bool "deflate" depends on ZRAM_BACKEND_DEFLATE =20 +config ZRAM_DEF_COMP_842 + bool "842" + depends on ZRAM_BACKEND_842 + endchoice =20 config ZRAM_DEF_COMP @@ -83,6 +93,7 @@ config ZRAM_DEF_COMP default "lz4hc" if ZRAM_DEF_COMP_LZ4HC default "zstd" if ZRAM_DEF_COMP_ZSTD default "deflate" if ZRAM_DEF_COMP_DEFLATE + default "842" if ZRAM_DEF_COMP_842 default "unset-value" =20 config ZRAM_WRITEBACK diff --git a/drivers/block/zram/Makefile b/drivers/block/zram/Makefile index 266430548437..0fdefd576691 100644 --- a/drivers/block/zram/Makefile +++ b/drivers/block/zram/Makefile @@ -7,5 +7,6 @@ zram-$(CONFIG_ZRAM_BACKEND_LZ4) +=3D backend_lz4.o zram-$(CONFIG_ZRAM_BACKEND_LZ4HC) +=3D backend_lz4hc.o zram-$(CONFIG_ZRAM_BACKEND_ZSTD) +=3D backend_zstd.o zram-$(CONFIG_ZRAM_BACKEND_DEFLATE) +=3D backend_deflate.o +zram-$(CONFIG_ZRAM_BACKEND_842) +=3D backend_842.o =20 obj-$(CONFIG_ZRAM) +=3D zram.o diff --git a/drivers/block/zram/backend_842.c b/drivers/block/zram/backend_= 842.c new file mode 100644 index 000000000000..8ea7a230b890 --- /dev/null +++ b/drivers/block/zram/backend_842.c @@ -0,0 +1,68 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include +#include +#include +#include + +#include "backend_842.h" + +struct sw842_ctx { + void *mem; +}; + +static void destroy_842(void *ctx) +{ + struct sw842_ctx *zctx =3D ctx; + + kfree(zctx->mem); + kfree(zctx); +} + +static void *create_842(void) +{ + struct sw842_ctx *ctx; + + ctx =3D kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return NULL; + + ctx->mem =3D kmalloc(SW842_MEM_COMPRESS, GFP_KERNEL); + if (!ctx->mem) + goto error; + + return ctx; + +error: + destroy_842(ctx); + return NULL; +} + +static int compress_842(void *ctx, const unsigned char *src, + unsigned char *dst, size_t *dst_len) +{ + struct sw842_ctx *zctx =3D ctx; + unsigned int dlen =3D *dst_len; + int ret; + + ret =3D sw842_compress(src, PAGE_SIZE, dst, &dlen, zctx->mem); + if (ret =3D=3D 0) + *dst_len =3D dlen; + return ret; +} + +static int decompress_842(void *ctx, const unsigned char *src, size_t src_= len, + unsigned char *dst) +{ + unsigned int dlen =3D PAGE_SIZE; + + return sw842_decompress(src, src_len, dst, &dlen); +} + +struct zcomp_backend backend_842 =3D { + .compress =3D compress_842, + .decompress =3D decompress_842, + .create_ctx =3D create_842, + .destroy_ctx =3D destroy_842, + .name =3D "842", +}; diff --git a/drivers/block/zram/backend_842.h b/drivers/block/zram/backend_= 842.h new file mode 100644 index 000000000000..c03a2396d7b2 --- /dev/null +++ b/drivers/block/zram/backend_842.h @@ -0,0 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#ifndef __BACKEND_842_H__ +#define __BACKEND_842_H__ + +#include "zcomp.h" + +extern struct zcomp_backend backend_842; + +#endif /* __BACKEND_842_H__ */ diff --git a/drivers/block/zram/zcomp.c b/drivers/block/zram/zcomp.c index 9fc5477a6259..2a38126f4da3 100644 --- a/drivers/block/zram/zcomp.c +++ b/drivers/block/zram/zcomp.c @@ -21,6 +21,7 @@ #include "backend_lz4hc.h" #include "backend_zstd.h" #include "backend_deflate.h" +#include "backend_842.h" =20 static struct zcomp_backend *backends[] =3D { #if IS_ENABLED(CONFIG_ZRAM_BACKEND_LZO) @@ -38,6 +39,9 @@ static struct zcomp_backend *backends[] =3D { #endif #if IS_ENABLED(CONFIG_ZRAM_BACKEND_DEFLATE) &backend_deflate, +#endif +#if IS_ENABLED(CONFIG_ZRAM_BACKEND_842) + &backend_842, #endif NULL }; --=20 2.45.0.rc1.225.g2a3ae87e7f-goog