commit b9b8833a3070d7891cc184e59dd9b95788de7f60
author Stewart Smith <stewart@linux.vnet.ibm.com> Fri Jun 12 08:26:43 2015 +1000
committer Stewart Smith <stewart@linux.vnet.ibm.com> Tue Aug 18 11:04:35 2015 +1000
tree 621680a724d95fa6b920cdc5d2db3c344a88e395
parent 26f8ce9ae2ee0ee0a40f7f89f5b79df8e21b0147

Reduce skiroot kernel size by 200k by disabling unused config options

By disabling some unused compression options, we shave roughly 200k off
end zImage.epapr image:

-rwxr-xr-x 1 stewart users 14796336 May 28 10:37 zImage.epapr
-rwxr-xr-x 1 stewart users 14581928 Jun 12 08:24 zImage.epapr

Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

openpower/configs/linux/skiroot_defconfig

diff --git a/openpower/configs/linux/skiroot_defconfig b/openpower/configs/linux/skiroot_defconfig
index 648de48..79cac6c 100644
--- a/openpower/configs/linux/skiroot_defconfig
+++ b/openpower/configs/linux/skiroot_defconfig
@@ -209,7 +209,18 @@
 CONFIG_NLS_ASCII=y
 CONFIG_NLS_ISO8859_1=y
 CONFIG_NLS_UTF8=y
-# CONFIG_XZ_DEC_POWERPC is not set
+CONFIG_XZ_DEC_POWERPC=y
+CONFIG_DECOMPRESS_LZO=n
+CONFIG_DECOMPRESS_LZ4=n
+CONFIG_DECOMPRESS_GZIP=n
+CONFIG_DECOMPRESS_BZIP2=n
+CONFIG_DECOMPRESS_LZMA=n
+CONFIG_RD_GZIP=n
+CONFIG_RD_BZIP2=n
+CONFIG_RD_LZMA=n
+CONFIG_RD_XZ=y
+CONFIG_RD_LZO=n
+CONFIG_RD_LZ4=n
 CONFIG_PRINTK_TIME=y
 CONFIG_MAGIC_SYSRQ=y
 CONFIG_DEBUG_FS=y
@@ -222,3 +233,5 @@
 CONFIG_XMON_DEFAULT=y
 # CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRYPTO_HW is not set
+CONFIG_CRYPTO_DES=n
+