Hi Krzyszotof, On 05.12.2019 21:00, Krzysztof Kozlowski wrote: > Few options KALLSYMS_ALL, SCSI, PM_DEVFREQ and mutex/spinlock debugging > were removed with savedefconfig because they were selected by other > options. However these are user-visible options and they might not be > selected in the future. Exactly this happened with commit 0e4a459f56c3 > ("tracing: Remove unnecessary DEBUG_FS dependency") removing the > dependency between DEBUG_FS and TRACING. > > To avoid losing these options in the future, explicitly mention them in > defconfig. > > Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> I will not mind adding: Reported-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> as this patch is a direct result of the discussion on my initial patch: https://patchwork.kernel.org/patch/11260361/ and my previous findings. > --- > arch/arm/configs/exynos_defconfig | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig > index e7e4bb5ad8d5..026407101cf2 100644 > --- a/arch/arm/configs/exynos_defconfig > +++ b/arch/arm/configs/exynos_defconfig > @@ -38,6 +38,7 @@ CONFIG_CRYPTO_SHA256_ARM=m > CONFIG_CRYPTO_SHA512_ARM=m > CONFIG_CRYPTO_AES_ARM_BS=m > CONFIG_CRYPTO_CHACHA20_NEON=m > +CONFIG_KALLSYMS_ALL=y > CONFIG_MODULES=y > CONFIG_MODULE_UNLOAD=y > CONFIG_PARTITION_ADVANCED=y > @@ -92,6 +93,7 @@ CONFIG_BLK_DEV_LOOP=y > CONFIG_BLK_DEV_CRYPTOLOOP=y > CONFIG_BLK_DEV_RAM=y > CONFIG_BLK_DEV_RAM_SIZE=8192 > +CONFIG_SCSI=y > CONFIG_BLK_DEV_SD=y > CONFIG_CHR_DEV_SG=y > CONFIG_ATA=y > @@ -291,6 +293,7 @@ CONFIG_CROS_EC_SPI=y > CONFIG_COMMON_CLK_MAX77686=y > CONFIG_COMMON_CLK_S2MPS11=y > CONFIG_EXYNOS_IOMMU=y > +CONFIG_PM_DEVFREQ=y > CONFIG_DEVFREQ_GOV_PERFORMANCE=y > CONFIG_DEVFREQ_GOV_POWERSAVE=y > CONFIG_DEVFREQ_GOV_USERSPACE=y > @@ -355,4 +358,7 @@ CONFIG_SOFTLOCKUP_DETECTOR=y > # CONFIG_DETECT_HUNG_TASK is not set > CONFIG_PROVE_LOCKING=y > CONFIG_DEBUG_ATOMIC_SLEEP=y > +CONFIG_DEBUG_RT_MUTEXES=y > +CONFIG_DEBUG_SPINLOCK=y > +CONFIG_DEBUG_MUTEXES=y > CONFIG_DEBUG_USER=y Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland