From nobody Wed Dec 17 10:50:59 2025 Received: from mail-pf1-f182.google.com (mail-pf1-f182.google.com [209.85.210.182]) (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 A72FF130A4D for ; Fri, 12 Jul 2024 05:19:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720761572; cv=none; b=uR2JC0IM8wItJ8HSD9t1cmzSF85Aw22mjcmuUzkGjKLBG9zF83d5E9w4EaLEghNf+wX5EzQjDFcD2Bq8Dg5A7yIQZ9IO1HTQayLcVKMmTrTTxBDekwgZiqpUUNUobTq/+xokO852juHaJSXQINXdEEqn5KBaEb9YwM0F7gkdxzc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720761572; c=relaxed/simple; bh=Fivx6VMuk2vjhcGib7Tcx14jPun6dKIEhFaCBDHvtpY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qxbUNxc2CfrLZHx5u4p8t1cRWs9Bfjbs2t9ny/7mv+GxXojIll67CPnSiAQvrZJOYLWhcyLCNsKjaFxXSSVTDCsf3OvuKMxmbqQmypBPg/m3s17j0O446BLIZYshSd2YGG6w4RoYaV/kd/BqhB25h0pOnMUWyz4h4fJ630aW1gk= 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=E8IdklIZ; arc=none smtp.client-ip=209.85.210.182 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="E8IdklIZ" Received: by mail-pf1-f182.google.com with SMTP id d2e1a72fcca58-70af0684c2bso1284662b3a.0 for ; Thu, 11 Jul 2024 22:19:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1720761570; x=1721366370; 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=b9CbhV5g6i0tQmXsKmS9hqUZt4I9LJTh9jd520bTuUo=; b=E8IdklIZrvE8UKxMBZD28Y5s2ra5vulWpqGrzRR5cb0d/B82gZzTsNTrWSEFoYYcmv I6+krBQSHDPw6djhIlV9hodR69LLlYYGP03bwWaqiOaCpDcx01na0LbXRtD6qZqHiEbC k9iRZuWMkUijp6BESd/rjToXbqhIDHIxrB4Lg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720761570; x=1721366370; 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=b9CbhV5g6i0tQmXsKmS9hqUZt4I9LJTh9jd520bTuUo=; b=wonZhGXYW/OrKAwsn9d1vo2RS9xTrKtPo7iPk7nKufbOEibotgS9bGLaowLJsFaeGK 8pqj3Y17iWhxDQ7kUu6XXKcOVnAGBQzbeBbjLz6ROzWTnvuiSbK2brSg4I6qx6ErpaNd AJJu87rKWxZ4/xCeqeTuP/i53vB/6w/UeUOzs2Z6WKHxfo23tKuN5pYXT1kSZyW3W4/z /igicnJjN2DY4pX2fS2IZchyF9iQ0m9dCyqGMN5Lx28u52iykX4mQyi85B/AWdF5/szk p04p2bzp33J57shLZLpApLADFKCBNUNlPLsLUCzG6oU3ovNpk+WNnF/1x3u122GyPJmm KJbQ== X-Gm-Message-State: AOJu0YzKFyInDDapVQfbHOfJMz+JVAlkgEvn7Q2qmACQa+CRAohnfdlW XZ35ZpvNLBNGgsnRq1yCILMuHBN65mzOXrpG2l2GarPa+TYH1VHdyN9JbbtEoA== X-Google-Smtp-Source: AGHT+IHP1kUmuKsOrqG9NV434DVislfhlL16TSkV8gCZPCrHd+XbPFpUGGmvpC8iGOnSSxJUpRP/Gw== X-Received: by 2002:a05:6a00:1387:b0:706:3329:5533 with SMTP id d2e1a72fcca58-70b43650a2dmr11919341b3a.24.1720761569793; Thu, 11 Jul 2024 22:19:29 -0700 (PDT) Received: from tigerii.tok.corp.google.com ([2401:fa00:8f:203:15f3:5252:ec56:52ae]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-70b43967851sm6553436b3a.109.2024.07.11.22.19.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jul 2024 22:19:29 -0700 (PDT) From: Sergey Senozhatsky To: Andrew Morton , Minchan Kim Cc: linux-kernel@vger.kernel.org, Sergey Senozhatsky Subject: [PATCH v6 11/23] zram: add 842 compression backend support Date: Fri, 12 Jul 2024 14:18:22 +0900 Message-ID: <20240712051850.484318-12-senozhatsky@chromium.org> X-Mailer: git-send-email 2.45.2.993.g49e7a77208-goog In-Reply-To: <20240712051850.484318-1-senozhatsky@chromium.org> References: <20240712051850.484318-1-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 bc3a1d0455b1..ddc19853ea96 100644 --- a/drivers/block/zram/Kconfig +++ b/drivers/block/zram/Kconfig @@ -45,6 +45,12 @@ 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 @@ -74,6 +80,10 @@ 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 @@ -84,6 +94,7 @@ 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..005f3fcb9024 --- /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, size_t src_le= n, + 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, src_len, 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, size_t dst_len) +{ + unsigned int dlen =3D dst_len; + + return sw842_decompress(src, src_len, dst, &dlen); +} + +const struct zcomp_ops 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..4dc85c188799 --- /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 const struct zcomp_ops backend_842; + +#endif /* __BACKEND_842_H__ */ diff --git a/drivers/block/zram/zcomp.c b/drivers/block/zram/zcomp.c index 4d212ef972ea..48ac7a3e8906 100644 --- a/drivers/block/zram/zcomp.c +++ b/drivers/block/zram/zcomp.c @@ -18,6 +18,7 @@ #include "backend_lz4hc.h" #include "backend_zstd.h" #include "backend_deflate.h" +#include "backend_842.h" =20 static const struct zcomp_ops *backends[] =3D { #if IS_ENABLED(CONFIG_ZRAM_BACKEND_LZO) @@ -35,6 +36,9 @@ static const struct zcomp_ops *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 2.45.2.993.g49e7a77208-goog