* [PATCH] ARM: exynos_defconfig: Enable DYNAMIC_DEBUG and get rid of old ext3
@ 2017-01-30 19:27 Krzysztof Kozlowski
2017-01-30 19:35 ` Javier Martinez Canillas
0 siblings, 1 reply; 2+ messages in thread
From: Krzysztof Kozlowski @ 2017-01-30 19:27 UTC (permalink / raw)
To: Kukjin Kim, Krzysztof Kozlowski, Javier Martinez Canillas,
Arnd Bergmann, Bartlomiej Zolnierkiewicz, linux-arm-kernel,
linux-samsung-soc, linux-kernel
DYNAMIC_DEBUG is quite useful for debugging kernels and should not cause
noticeable performance regressions. It makes the kernel noticeably
bigger (around 4%) but this difference should not impact typical
developer and reference usage of this defconfig.
Sizes:
zImage-old: 4641496 bytes
zImage-new: 4811384 bytes
text data bss dec hex filename
7031229 2570916 327016 9929161 9781c9 vmlinux-old
7205921 2800052 327016 10332989 9dab3d vmlinux-new
Additionally, remove the EXT3_FS symbol because it is entirely replaced
by EXT4_FS.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
arch/arm/configs/exynos_defconfig | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
index 12b8f69cbb52..746739027da6 100644
--- a/arch/arm/configs/exynos_defconfig
+++ b/arch/arm/configs/exynos_defconfig
@@ -240,7 +240,7 @@ CONFIG_PWM=y
CONFIG_PWM_SAMSUNG=y
CONFIG_PHY_EXYNOS5250_SATA=y
CONFIG_EXT2_FS=y
-CONFIG_EXT3_FS=y
+CONFIG_EXT4_FS=y
CONFIG_AUTOFS4_FS=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
@@ -255,6 +255,7 @@ CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=y
CONFIG_PRINTK_TIME=y
+CONFIG_DYNAMIC_DEBUG=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_FS=y
CONFIG_MAGIC_SYSRQ=y
--
2.9.3
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] ARM: exynos_defconfig: Enable DYNAMIC_DEBUG and get rid of old ext3
2017-01-30 19:27 [PATCH] ARM: exynos_defconfig: Enable DYNAMIC_DEBUG and get rid of old ext3 Krzysztof Kozlowski
@ 2017-01-30 19:35 ` Javier Martinez Canillas
0 siblings, 0 replies; 2+ messages in thread
From: Javier Martinez Canillas @ 2017-01-30 19:35 UTC (permalink / raw)
To: Krzysztof Kozlowski, Kukjin Kim, Arnd Bergmann,
Bartlomiej Zolnierkiewicz, linux-arm-kernel, linux-samsung-soc,
linux-kernel
Hello Krzysztof,
On 01/30/2017 04:27 PM, Krzysztof Kozlowski wrote:
> DYNAMIC_DEBUG is quite useful for debugging kernels and should not cause
> noticeable performance regressions. It makes the kernel noticeably
> bigger (around 4%) but this difference should not impact typical
> developer and reference usage of this defconfig.
>
> Sizes:
> zImage-old: 4641496 bytes
> zImage-new: 4811384 bytes
>
> text data bss dec hex filename
> 7031229 2570916 327016 9929161 9781c9 vmlinux-old
> 7205921 2800052 327016 10332989 9dab3d vmlinux-new
>
Agreed, most people usually will end enabling this option when debugging
issues anyways so having enabled by default is quite convenient indeed.
> Additionally, remove the EXT3_FS symbol because it is entirely replaced
> by EXT4_FS.
>
> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
> ---
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Best regards,
--
Javier Martinez Canillas
Open Source Group
Samsung Research America
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