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From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: Andrew Morton <akpm@linux-foundation.org>,
	Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>,
	Nitin Gupta <ngupta@vflare.org>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCHv3 6/8] zram: Add recompression algorithm choice to Kconfig
Date: Tue, 18 Oct 2022 12:07:14 +0900	[thread overview]
Message-ID: <Y04YYtJUZPq13fLg@google.com> (raw)
In-Reply-To: <20221009090720.1040633-7-senozhatsky@chromium.org>

Make (secondary) recompression algorithm selectable just like
we do it for the (primary) default one.

Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
---
 drivers/block/zram/Kconfig | 40 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/drivers/block/zram/Kconfig b/drivers/block/zram/Kconfig
index 3e00656a6f8a..076a76cd1664 100644
--- a/drivers/block/zram/Kconfig
+++ b/drivers/block/zram/Kconfig
@@ -93,3 +93,43 @@ config ZRAM_MULTI_COMP
 
 	SIZE (in bytes) parameter sets the object size watermark: idle
 	objects that are of a smaller size will not get recompressed.
+
+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
-- 
2.38.0.413.g74048e4d9e-goog


  reply	other threads:[~2022-10-18  3:12 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-09  9:07 [PATCHv3 0/8] zram: Support multiple compression streams Sergey Senozhatsky
2022-10-09  9:07 ` [PATCHv3 1/8] zram: Preparation for multi-zcomp support Sergey Senozhatsky
2022-10-09  9:07 ` [PATCHv3 2/8] zram: Add recompression algorithm sysfs knob Sergey Senozhatsky
2022-10-09  9:07 ` [PATCHv3 3/8] zram: Factor out WB and non-WB zram read functions Sergey Senozhatsky
2022-10-09  9:07 ` [PATCHv3 4/8] zram: Introduce recompress sysfs knob Sergey Senozhatsky
2022-10-18  0:08   ` Andrew Morton
2022-10-18  2:12     ` Sergey Senozhatsky
2022-10-18  2:42   ` Sergey Senozhatsky
2022-10-09  9:07 ` [PATCHv3 5/8] documentation: Add recompression documentation Sergey Senozhatsky
2022-10-18  2:22   ` Sergey Senozhatsky
2022-10-18  3:11     ` Andrew Morton
2022-10-18  2:50   ` Sergey Senozhatsky
2022-10-09  9:07 ` [PATCHv3 6/8] zram: Add recompression algorithm choice to Kconfig Sergey Senozhatsky
2022-10-18  3:07   ` Sergey Senozhatsky [this message]
2022-10-09  9:07 ` [PATCHv3 7/8] zram: Add recompress flag to read_block_state() Sergey Senozhatsky
2022-10-09  9:07 ` [PATCHv3 8/8] zram: correct typos Sergey Senozhatsky
2022-10-18  0:08   ` Andrew Morton
2022-10-18  2:10     ` Sergey Senozhatsky
2022-10-18  3:11 ` [PATCHv3 0/8] zram: Support multiple compression streams Sergey Senozhatsky

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