Re: [PATCH v1] tracing/remotes: Fix TRACE_REMOTE build when TRACING=n

[Steven Rostedt]

On Thu, 15 Oct 2026 12:28:14 +0100
Vincent Donnefort <vdonnefort@xxxxxxxxxx> wrote:

> TRACE_REMOTE relies on tracefs, eventfs and ring-buffer which are only
> built and declared when TRACING is enabled. It is however possible for a
> config to have FTRACE=y TRACING=n and TRACE_REMOTE=y.
> 
> To fix this configuration, have TRACE_REMOTE select TRACING directly,
> just like other FTRACE options do and drop the TRACING dependency from
> NVHE_EL2_TRACING to avoid a circular Kconfig dependency.
> 
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: ea908a2b79c8 ("tracing: Add a trace remote module for testing")
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Closes: https://lore.kernel.org/oe-kbuild-all/202610142301.GBepPVmS-lkp@xxxxxxxxx/
> Signed-off-by: Vincent Donnefort <vdonnefort@xxxxxxxxxx>

Acked-by: Steven Rostedt <rostedt@xxxxxxxxxxx>

This can go through the arm64 tree.

-- Steve

> ---
>  arch/arm64/kvm/Kconfig | 2 +-
>  kernel/trace/Kconfig   | 1 +
>  2 files changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig
> index 449154f9a485..e179b8ad79e8 100644
> --- a/arch/arm64/kvm/Kconfig
> +++ b/arch/arm64/kvm/Kconfig
> @@ -74,7 +74,7 @@ if NVHE_EL2_DEBUG
>  
>  config NVHE_EL2_TRACING
>  	bool
> -	depends on TRACING && FTRACE
> +	depends on FTRACE
>  	select TRACE_REMOTE
>  	default y
>  
> diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
> index 0ab5916575a9..6587450cfcd1 100644
> --- a/kernel/trace/Kconfig
> +++ b/kernel/trace/Kconfig
> @@ -1329,6 +1329,7 @@ source "kernel/trace/rv/Kconfig"
>  
>  config TRACE_REMOTE
>  	bool
> +	select TRACING
>  
>  config SIMPLE_RING_BUFFER
>  	bool
> 
> base-commit: 24a19b953e2a3d0ea5a8c4951a0ab8f32720c907