Commit 2343f1d2 authored Jun 20, 2018 by Yogesh Lal

defconfig: Enable page_owner for sm8150 on perf config



This patch enables CONFIG_PAGE_OWNER on perf config.
The feature is not enabled by default and needs
to be enabled via boot param "page_owner=on".

Set STACK_HASH_ORDER_SHIFT to 12 to reduce
stack depot hash size.

Default value of STACK_HASH_ORDER_SHIFT=20 makes stack depot
to consume 8MB of static memory.

With STACK_HASH_ORDER_SHIFT=12 stack depot consume only 104KB.

The time taken to read from /sys/kernel/debug/page_owner
increased by around 60 secs with this patch on a 6 GB target,
but we can live with it as it's a only debug feature.

Change-Id: I772aa69865ee30c4834cfb2fa0d7feafd3853c0c
Signed-off-by: Yogesh Lal <ylal@codeaurora.org>

parent 1c462be3

arch/arm64/configs/vendor/sm8150-perf_defconfig

+2 −0

Original line number	Diff line number	Diff line
		@@ -598,6 +598,7 @@ CONFIG_NLS_CODEPAGE_437=y
		CONFIG_NLS_ISO8859_1=y
		CONFIG_PRINTK_TIME=y
		CONFIG_DEBUG_INFO=y
		CONFIG_PAGE_OWNER=y
		CONFIG_MAGIC_SYSRQ=y
		CONFIG_PANIC_TIMEOUT=5
		CONFIG_SCHEDSTATS=y
		@@ -639,3 +640,4 @@ CONFIG_CRYPTO_GHASH_ARM64_CE=y
		CONFIG_CRYPTO_AES_ARM64_CE_CCM=y
		CONFIG_CRYPTO_AES_ARM64_CE_BLK=y
		CONFIG_CRYPTO_AES_ARM64_NEON_BLK=y
		CONFIG_STACK_HASH_ORDER_SHIFT=12