linux-yocto-dev: enable ZRAM

ZRAM, when configured by userspace, can provide a compressed swapspace
backed by regular RAM. This generally increases the amount of available
memory, avoiding the need for disk-backed swap.

When it isn't configured by userspace, this does nothing.

Signed-off-by: Koen Kooi <[email protected]>

Author: koenkooi

recipes-kernel/linux/linux-yocto-dev/configs/qcom.cfg

@@ -16,3 +16,24 @@ CONFIG_USB_XHCI_PCI_RENESAS=m
 CONFIG_DMABUF_HEAPS=y
 CONFIG_DMABUF_HEAPS_SYSTEM=y
 CONFIG_DMABUF_HEAPS_CMA=y
+
+# ZRAM
+CONFIG_ZRAM=y
+CONFIG_ZRAM_BACKEND_LZ4=y
+CONFIG_ZRAM_BACKEND_LZ4HC=y
+CONFIG_ZRAM_BACKEND_ZSTD=y
+CONFIG_ZRAM_BACKEND_DEFLATE=y
+CONFIG_ZRAM_BACKEND_842=y
+CONFIG_ZRAM_BACKEND_LZO=y
+# CONFIG_ZRAM_DEF_COMP_LZORLE is not set
+CONFIG_ZRAM_DEF_COMP_LZO=y
+# CONFIG_ZRAM_DEF_COMP_LZ4 is not set
+# CONFIG_ZRAM_DEF_COMP_LZ4HC is not set
+# CONFIG_ZRAM_DEF_COMP_ZSTD is not set
+# CONFIG_ZRAM_DEF_COMP_DEFLATE is not set
+# CONFIG_ZRAM_DEF_COMP_842 is not set
+CONFIG_ZRAM_DEF_COMP="lzo"
+CONFIG_ZRAM_WRITEBACK=y
+CONFIG_ZRAM_TRACK_ENTRY_ACTIME=y
+CONFIG_ZRAM_MEMORY_TRACKING=y
+CONFIG_ZRAM_MULTI_COMP=y