[OE-core] [PATCH] image_types.bbclass: Set 70% RAM memory usage limit for xz

[Khem Raj]

when building with opkg backend and huge packages e.g. chromium/llvm all
going in parallel, memory pressure causes xz to catapult with

do_package_write_ipk: Failed to create package, opkg-build failed with: xz: (stdin): Cannot allocate memory

since there are many tasks going on in parallel, xz adds to memory pressure
and it wants it all, put an upper limit for memory xz can use

We add a variable XZ_MAXRAM with 70% of RAM limit and can be customized
if builders have more memory one can set it like

XZMAX_RAM = "-M 0"

Signed-off-by: Khem Raj <raj.khem at gmail.com>
Cc: Alejandro del Castillo <alejandro.delcastillo at ni.com>
---
 meta/classes/image_types.bbclass | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/meta/classes/image_types.bbclass b/meta/classes/image_types.bbclass
index 70bd315306..9c8ea0643c 100644
--- a/meta/classes/image_types.bbclass
+++ b/meta/classes/image_types.bbclass
@@ -57,6 +57,7 @@ def imagetypes_getdepends(d):
 XZ_COMPRESSION_LEVEL ?= "-3"
 XZ_INTEGRITY_CHECK ?= "crc32"
 XZ_THREADS ?= "-T 0"
+XZ_MAXRAM ?= "-M 70%"
 
 ZIP_COMPRESSION_LEVEL ?= "-9"
 
@@ -284,7 +285,7 @@ CONVERSIONTYPES = "gz bz2 lzma xz lz4 lzo zip sum md5sum sha1sum sha224sum sha25
 CONVERSION_CMD_lzma = "lzma -k -f -7 ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
 CONVERSION_CMD_gz = "pigz -f -9 -n -c ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} > ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.gz"
 CONVERSION_CMD_bz2 = "pbzip2 -f -k ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
-CONVERSION_CMD_xz = "xz -f -k -c ${XZ_COMPRESSION_LEVEL} ${XZ_THREADS} --check=${XZ_INTEGRITY_CHECK} ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} > ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.xz"
+CONVERSION_CMD_xz = "xz -f -k -c ${XZ_COMPRESSION_LEVEL} ${XZ_THREADS} ${XZ_MAXRAM} --check=${XZ_INTEGRITY_CHECK} ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} > ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.xz"
 CONVERSION_CMD_lz4 = "lz4 -9 -z -l ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.lz4"
 CONVERSION_CMD_lzo = "lzop -9 ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
 CONVERSION_CMD_zip = "zip ${ZIP_COMPRESSION_LEVEL} ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.zip ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
-- 
2.20.1