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: [PATCHv2 6/8] zram: Add recompression algorithm choice to Kconfig
Date: Wed, 5 Oct 2022 11:40:12 +0900 [thread overview]
Message-ID: <20221005024014.22914-7-senozhatsky@chromium.org> (raw)
In-Reply-To: <20221005024014.22914-1-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 7febf36e93eb..442885ac72ca 100644
--- a/drivers/block/zram/Kconfig
+++ b/drivers/block/zram/Kconfig
@@ -90,3 +90,43 @@ 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 077a0bc60b8d..75fc89de21e3 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
};
--
2.38.0.rc1.362.ged0d419d3c-goog
next prev parent reply other threads:[~2022-10-05 2:40 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-05 2:40 [PATCHv2 0/8] zram: Support multiple compression streams Sergey Senozhatsky
2022-10-05 2:40 ` [PATCHv2 1/8] zram: Preparation for multi-zcomp support Sergey Senozhatsky
2022-10-05 2:40 ` [PATCHv2 2/8] zram: Add recompression algorithm sysfs knob Sergey Senozhatsky
2022-10-05 2:40 ` [PATCHv2 3/8] zram: Factor out WB and non-WB zram read functions Sergey Senozhatsky
2022-10-05 2:40 ` [PATCHv2 4/8] zram: Introduce recompress sysfs knob Sergey Senozhatsky
2022-10-05 2:40 ` [PATCHv2 5/8] documentation: Add recompression documentation Sergey Senozhatsky
2022-10-05 2:40 ` Sergey Senozhatsky [this message]
2022-10-05 2:40 ` [PATCHv2 7/8] zram: Add recompress flag to read_block_state() Sergey Senozhatsky
2022-10-05 2:40 ` [PATCHv2 8/8] zram: correct typos Sergey Senozhatsky
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