From nobody Mon Apr 6 18:52:42 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 57E05ECAAD5 for ; Mon, 5 Sep 2022 08:24:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237536AbiIEIYT (ORCPT ); Mon, 5 Sep 2022 04:24:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44874 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237452AbiIEIXt (ORCPT ); Mon, 5 Sep 2022 04:23:49 -0400 Received: from mail-pg1-x530.google.com (mail-pg1-x530.google.com [IPv6:2607:f8b0:4864:20::530]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BCFFE2AF8 for ; Mon, 5 Sep 2022 01:23:48 -0700 (PDT) Received: by mail-pg1-x530.google.com with SMTP id bh13so7521131pgb.4 for ; Mon, 05 Sep 2022 01:23:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=/AdpGVT0N/8ncggFEAw2LdRk7MFt3IthPSmEwk0XZqA=; b=LiL4ic6qnwShH+vKAAfDpVgTQC0FxSPXFggKOMKQNFzrWxx/1FeDNFEhP9z1ZoIO2f Wd8EYKuaIk6ket1LJsvuXUY4AKFZe10HIuW6YGeD4RCNyM+xZjuqWjyZvTo7lmuz4JqP sL+P+IsNne+r1gmoWf77QeKPbpDCA0nP5YR4c= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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; bh=/AdpGVT0N/8ncggFEAw2LdRk7MFt3IthPSmEwk0XZqA=; b=6iB7z8xUaPle4xgijp3eTHvUAFfpIYFUG4YSx/HTkaPI2spXJc34Eg/26E5RorOrmW 551gumYl88WEeeGLZ2fICGJJueLUdi6359ZPW4Sjdytp7FPZGwZzMpzgBUIY3Y7nxtZR 1fNbQxXt8fOyR/m7RK8/dJKuUn+Sr3N2Nx2PFs+RrsZ21QOHou16L/+u/cA+8EfnQ7f7 6NSz38UrTa3gG6kSu+lo/n/lSINplMG2mx22Ra+bI0mxHHYDZoadlBPpKBbk/R7Sayj9 Wh08GeuOzmQOVvWmWq9mkAtbROjrEtDfVP/RJ6oCJ8ZbMSg5toCV1KTtc6Au/+YEPByX ueJw== X-Gm-Message-State: ACgBeo002eaZdvvKe+n946HmbKDu+GzPkbaH1X/MDgJ7DoJ2hQfyP1hr m6zu+NeCNCqzGyrLXwWLRpvvtg== X-Google-Smtp-Source: AA6agR4UZ885aB4mUVeDufZQeCtDSZclJbHMwybgeqEVVnMUNj3OcY1loqHdvf0STXrAMJAluHjgsA== X-Received: by 2002:a65:6c07:0:b0:41d:9ddd:4266 with SMTP id y7-20020a656c07000000b0041d9ddd4266mr40872332pgu.326.1662366228315; Mon, 05 Sep 2022 01:23:48 -0700 (PDT) Received: from tigerii.tok.corp.google.com ([2401:fa00:8f:203:71e2:8444:42d9:4bb0]) by smtp.gmail.com with ESMTPSA id p14-20020a170902e74e00b001641b2d61d4sm6807093plf.30.2022.09.05.01.23.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Sep 2022 01:23:47 -0700 (PDT) From: Sergey Senozhatsky To: Minchan Kim , Andrew Morton Cc: Nitin Gupta , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Sergey Senozhatsky Subject: [PATCH RFC 6/7] zram: Add recompression algorithm choice to Kconfig Date: Mon, 5 Sep 2022 17:23:22 +0900 Message-Id: <20220905082323.2742399-7-senozhatsky@chromium.org> X-Mailer: git-send-email 2.37.2.789.g6183377224-goog In-Reply-To: <20220905082323.2742399-1-senozhatsky@chromium.org> References: <20220905082323.2742399-1-senozhatsky@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Make (secondary) recompression algorithm selectable just like we do it for the (primary) default one. Signed-off-by: Sergey Senozhatsky --- drivers/block/zram/Kconfig | 40 +++++++++++++++++++++++++++++++++++ drivers/block/zram/zram_drv.c | 2 +- 2 files changed, 41 insertions(+), 1 deletion(-) diff --git a/drivers/block/zram/Kconfig b/drivers/block/zram/Kconfig index 81ae4b96ec1a..fc2d4d66c484 100644 --- a/drivers/block/zram/Kconfig +++ b/drivers/block/zram/Kconfig @@ -89,3 +89,43 @@ config ZRAM_MULTI_COMP =20 echo TIMEOUT > /sys/block/zramX/idle echo SIZE > /sys/block/zramX/recompress + +choice + prompt "Default zram recompression algorithm" + default ZRAM_DEF_RECOMP_ZSTD + depends on ZRAM && ZRAM_MULTI_COMP + +config ZRAM_DEF_RECOMP_LZORLE + bool "lzo-rle" + depends on CRYPTO_LZO + +config ZRAM_DEF_RECOMP_ZSTD + bool "zstd" + depends on CRYPTO_ZSTD + +config ZRAM_DEF_RECOMP_LZ4 + bool "lz4" + depends on CRYPTO_LZ4 + +config ZRAM_DEF_RECOMP_LZO + bool "lzo" + depends on CRYPTO_LZO + +config ZRAM_DEF_RECOMP_LZ4HC + bool "lz4hc" + depends on CRYPTO_LZ4HC + +config ZRAM_DEF_RECOMP_842 + bool "842" + depends on CRYPTO_842 + +endchoice + +config ZRAM_DEF_RECOMP + string + default "lzo-rle" if ZRAM_DEF_RECOMP_LZORLE + default "zstd" if ZRAM_DEF_RECOMP_ZSTD + default "lz4" if ZRAM_DEF_RECOMP_LZ4 + default "lzo" if ZRAM_DEF_RECOMP_LZO + default "lz4hc" if ZRAM_DEF_RECOMP_LZ4HC + default "842" if ZRAM_DEF_RECOMP_842 diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 386e49a13806..8ed41514b8f0 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -44,7 +44,7 @@ static int zram_major; static const char *default_comp_algs[ZRAM_MAX_ZCOMPS] =3D { CONFIG_ZRAM_DEF_COMP, #ifdef CONFIG_ZRAM_MULTI_COMP - "zstd", + CONFIG_ZRAM_DEF_RECOMP, #endif }; =20 --=20 2.37.2.789.g6183377224-goog