linux-kernel - Re: [PATCH v6 1/2] function_graph: Support recording and printing the return value of function

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Date:   Tue, 21 Mar 2023 22:27:30 +0000
From:   Conor Dooley <conor@...nel.org>
To:     Donglin Peng <pengdonglin@...gfor.com.cn>
Cc:     mhiramat@...nel.org, rostedt@...dmis.org, linux@...linux.org.uk,
        mark.rutland@....com, will@...nel.org, catalin.marinas@....com,
        palmer@...belt.com, paul.walmsley@...ive.com, tglx@...utronix.de,
        dave.hansen@...ux.intel.com, x86@...nel.org, mingo@...hat.com,
        peterz@...radead.org, xiehuan09@...il.com, dinghui@...gfor.com.cn,
        huangcun@...gfor.com.cn, dolinux.peng@...il.com,
        linux-trace-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 1/2] function_graph: Support recording and printing
 the return value of function

On Tue, Mar 21, 2023 at 01:46:49AM -0700, Donglin Peng wrote:
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index c5e42cc37604..3efa4f645a39 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -139,6 +139,7 @@ config RISCV
>  	select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE
>  	select HAVE_FTRACE_MCOUNT_RECORD if !XIP_KERNEL
>  	select HAVE_FUNCTION_GRAPH_TRACER
> +	select HAVE_FUNCTION_GRAPH_RETVAL if HAVE_FUNCTION_GRAPH_TRACER
>  	select HAVE_FUNCTION_TRACER if !XIP_KERNEL && !PREEMPTION

BTW, and this is such a minor nit, but if you end up having to do a respin
of this for some other reason, would you mind adding the new option in
alphabetical order?

Thanks,
Conor.

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