configs: Enable more ZRAM backends

6.12 kernel reworked how ZRAM backends were configured. Let's enable the ones we've lost. I've chosen zstd as the default. 6.6 kernel supported: $ cat /sys/block/zram0/comp_algorithm [lzo-rle] lzo lz4 zstd 6.12 currently supports: $ cat /sys/block/zram0/comp_algorithm [lzo-rle] lzo With this PR 6.12 supports: $ cat /sys/block/zram0/comp_algorithm lzo-rle lzo lz4 [zstd] See: https://forums.raspberrypi.com/viewtopic.php?p=2296678#p2296678 Signed-off-by: Dom Cobley <popcornmix@gmail.com>
raspberrypi · Feb 21, 2025 · 60e5cbd · 60e5cbd
1 parent 32bcc01
commit 60e5cbd
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diff --git a/arch/arm/configs/bcm2709_defconfig b/arch/arm/configs/bcm2709_defconfig
@@ -441,6 +441,10 @@ CONFIG_MTD_SPI_NOR=m
 CONFIG_MTD_UBI=m
 CONFIG_OF_CONFIGFS=y
 CONFIG_ZRAM=m
+CONFIG_ZRAM_BACKEND_LZ4=y
+CONFIG_ZRAM_BACKEND_ZSTD=y
+CONFIG_ZRAM_BACKEND_LZO=y
+CONFIG_ZRAM_DEF_COMP_ZSTD=y
 CONFIG_ZRAM_WRITEBACK=y
 CONFIG_ZRAM_MULTI_COMP=y
 CONFIG_BLK_DEV_LOOP=y

diff --git a/arch/arm/configs/bcm2711_defconfig b/arch/arm/configs/bcm2711_defconfig
@@ -448,6 +448,10 @@ CONFIG_MTD_SPI_NOR=m
 CONFIG_MTD_UBI=m
 CONFIG_OF_CONFIGFS=y
 CONFIG_ZRAM=m
+CONFIG_ZRAM_BACKEND_LZ4=y
+CONFIG_ZRAM_BACKEND_ZSTD=y
+CONFIG_ZRAM_BACKEND_LZO=y
+CONFIG_ZRAM_DEF_COMP_ZSTD=y
 CONFIG_ZRAM_WRITEBACK=y
 CONFIG_ZRAM_MULTI_COMP=y
 CONFIG_BLK_DEV_LOOP=y

diff --git a/arch/arm/configs/bcmrpi_defconfig b/arch/arm/configs/bcmrpi_defconfig
@@ -435,6 +435,10 @@ CONFIG_MTD_SPI_NOR=m
 CONFIG_MTD_UBI=m
 CONFIG_OF_CONFIGFS=y
 CONFIG_ZRAM=m
+CONFIG_ZRAM_BACKEND_LZ4=y
+CONFIG_ZRAM_BACKEND_ZSTD=y
+CONFIG_ZRAM_BACKEND_LZO=y
+CONFIG_ZRAM_DEF_COMP_ZSTD=y
 CONFIG_ZRAM_WRITEBACK=y
 CONFIG_ZRAM_MULTI_COMP=y
 CONFIG_BLK_DEV_LOOP=y

diff --git a/arch/arm64/configs/bcm2711_defconfig b/arch/arm64/configs/bcm2711_defconfig
@@ -473,6 +473,10 @@ CONFIG_MTD_SPI_NOR=m
 CONFIG_MTD_UBI=m
 CONFIG_OF_CONFIGFS=y
 CONFIG_ZRAM=m
+CONFIG_ZRAM_BACKEND_LZ4=y
+CONFIG_ZRAM_BACKEND_ZSTD=y
+CONFIG_ZRAM_BACKEND_LZO=y
+CONFIG_ZRAM_DEF_COMP_ZSTD=y
 CONFIG_ZRAM_WRITEBACK=y
 CONFIG_ZRAM_MULTI_COMP=y
 CONFIG_BLK_DEV_LOOP=y

diff --git a/arch/arm64/configs/bcm2712_defconfig b/arch/arm64/configs/bcm2712_defconfig
@@ -476,6 +476,10 @@ CONFIG_MTD_SPI_NOR=m
 CONFIG_MTD_UBI=m
 CONFIG_OF_CONFIGFS=y
 CONFIG_ZRAM=m
+CONFIG_ZRAM_BACKEND_LZ4=y
+CONFIG_ZRAM_BACKEND_ZSTD=y
+CONFIG_ZRAM_BACKEND_LZO=y
+CONFIG_ZRAM_DEF_COMP_ZSTD=y
 CONFIG_ZRAM_WRITEBACK=y
 CONFIG_ZRAM_MULTI_COMP=y
 CONFIG_BLK_DEV_LOOP=y

diff --git a/arch/arm64/configs/bcmrpi3_defconfig b/arch/arm64/configs/bcmrpi3_defconfig
@@ -447,6 +447,10 @@ CONFIG_MTD_SPI_NAND=m
 CONFIG_MTD_UBI=m
 CONFIG_OF_CONFIGFS=y
 CONFIG_ZRAM=m
+CONFIG_ZRAM_BACKEND_LZ4=y
+CONFIG_ZRAM_BACKEND_ZSTD=y
+CONFIG_ZRAM_BACKEND_LZO=y
+CONFIG_ZRAM_DEF_COMP_ZSTD=y
 CONFIG_ZRAM_WRITEBACK=y
 CONFIG_ZRAM_MULTI_COMP=y
 CONFIG_BLK_DEV_LOOP=y