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From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: Minchan Kim <minchan@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>
Cc: Nitin Gupta <ngupta@vflare.org>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	Sergey Senozhatsky <senozhatsky@chromium.org>
Subject: [PATCH 2/3] zram: Add recompression algorithm choice to Kconfig
Date: Mon,  5 Sep 2022 17:15:45 +0900	[thread overview]
Message-ID: <20220905081552.2740917-4-senozhatsky@chromium.org> (raw)
In-Reply-To: <20220905081552.2740917-1-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 +++++++++++++++++++++++++++++++++++
 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
 
           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 5f0181d9a69e..f144f31c3c4b 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] = {
 	CONFIG_ZRAM_DEF_COMP,
 #ifdef CONFIG_ZRAM_MULTI_COMP
-	"zstd",
+	CONFIG_ZRAM_DEF_RECOMP,
 #endif
 };
 
-- 
2.37.2.789.g6183377224-goog


  parent reply	other threads:[~2022-09-05  8:16 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-05  8:15 [PATCH RFC 0/7] zram: Support multiple compression streams Sergey Senozhatsky
2022-09-05  8:15 ` [PATCH 1/3] documentation: Add recompression documentation Sergey Senozhatsky
2022-09-05  8:15 ` [PATCH RFC 1/7] zram: Preparation for multi-zcomp support Sergey Senozhatsky
2022-09-05  8:15 ` Sergey Senozhatsky [this message]
2022-09-05  8:15 ` [PATCH RFC 2/7] zram: Add recompression algorithm sysfs knob Sergey Senozhatsky
2022-09-05  8:15 ` [PATCH 3/3] zram: Add recompress flag to read_block_state() Sergey Senozhatsky
2022-09-05  8:15 ` [PATCH RFC 3/7] zram: Factor out WB and non-WB zram read functions Sergey Senozhatsky
2022-09-05  8:15 ` [PATCH RFC 4/7] zram: Introduce recompress sysfs knob Sergey Senozhatsky
2022-09-05  9:21   ` Barry Song
2022-09-05  9:53     ` Sergey Senozhatsky
2022-09-05 10:06       ` Barry Song
2022-09-05 10:17         ` Sergey Senozhatsky
2022-09-05 21:27           ` Barry Song
2022-09-05  8:15 ` [PATCH RFC 5/7] documentation: Add recompression documentation Sergey Senozhatsky
2022-09-05  8:15 ` [PATCH RFC 6/7] zram: Add recompression algorithm choice to Kconfig Sergey Senozhatsky
2022-09-05  8:15 ` [PATCH RFC 7/7] zram: Add recompress flag to read_block_state() Sergey Senozhatsky
2022-09-05  8:21 ` [PATCH RFC 0/7] zram: Support multiple compression streams Sergey Senozhatsky

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