linux-kernel - Re: [PATCH v2 4/4] rehook, fprobe: do not trace rethook related functions

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Date:   Tue, 16 May 2023 10:20:06 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Ze Gao <zegao2021@...il.com>
Cc:     Masami Hiramatsu <mhiramat@...nel.org>,
        Albert Ou <aou@...s.berkeley.edu>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Borislav Petkov <bp@...en8.de>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Sven Schnelle <svens@...ux.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Vasily Gorbik <gor@...ux.ibm.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-s390@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
        bpf@...r.kernel.org, Conor Dooley <conor@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>, Yonghong Song <yhs@...com>,
        Ze Gao <zegao@...cent.com>
Subject: Re: [PATCH v2 4/4] rehook, fprobe: do not trace rethook related
 functions

On Tue, 16 May 2023 15:18:30 +0800
Ze Gao <zegao2021@...il.com> wrote:

>  CFLAGS_REMOVE_early.o		= $(CC_FLAGS_FTRACE)
> +CFLAGS_REMOVE_rethook.o		= $(CC_FLAGS_FTRACE)
>  
>  endif
>  
> diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
> index dd61752f4c96..4070a01c11b7 100644
> --- a/arch/x86/kernel/Makefile
> +++ b/arch/x86/kernel/Makefile
> @@ -17,6 +17,7 @@ CFLAGS_REMOVE_ftrace.o = -pg
>  CFLAGS_REMOVE_early_printk.o = -pg
>  CFLAGS_REMOVE_head64.o = -pg
>  CFLAGS_REMOVE_sev.o = -pg
> +CFLAGS_REMOVE_rethook.o = -pg

Unrelated to this patch, but someday we need to change the -pg above to
$(CC_FLAGS_FTRACE).

-- Steve


>  endif
>  
>  KASAN_SANITIZE_head$(BITS).o				:= n
> --