Re: [PATCH] arm64: defconfig: Enable Ftrace and STM configs

[Krzysztof Kozlowski]

On 10/09/2024 11:21, Mao Jinlong wrote:
> Ftrace logs can be captured by STM over TMC sink path. We can enable
> ftrace logs along with HW trace of coresight component. The timestamp
> of ftrace logs and hw traces will be in sync which helps to debug.
> 
> Signed-off-by: Mao Jinlong <quic_jinlmao@xxxxxxxxxxx>
> ---
>  arch/arm64/configs/defconfig | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
> index 362df9390263..979f6eeecf2b 100644
> --- a/arch/arm64/configs/defconfig
> +++ b/arch/arm64/configs/defconfig
> @@ -1588,6 +1588,12 @@ CONFIG_NVMEM_SNVS_LPGPR=y
>  CONFIG_NVMEM_SPMI_SDAM=m
>  CONFIG_NVMEM_SUNXI_SID=y
>  CONFIG_NVMEM_UNIPHIER_EFUSE=y
> +CONFIG_STM_PROTO_BASIC=m
> +CONFIG_STM_PROTO_SYS_T=m
> +CONFIG_STM_DUMMY=m
> +CONFIG_STM_SOURCE_CONSOLE=m
> +CONFIG_STM_SOURCE_HEARTBEAT=m
> +CONFIG_STM_SOURCE_FTRACE=m
>  CONFIG_FPGA=y
>  CONFIG_FPGA_MGR_ALTERA_CVP=m
>  CONFIG_FPGA_MGR_STRATIX10_SOC=m
> @@ -1703,7 +1709,6 @@ CONFIG_MAGIC_SYSRQ=y
>  CONFIG_DEBUG_FS=y
>  # CONFIG_SCHED_DEBUG is not set
>  # CONFIG_DEBUG_PREEMPT is not set
> -# CONFIG_FTRACE is not set

That's a user-visible symbol. You must select it explicitly.

Best regards,
Krzysztof