linux-kernel - Re: [PATCH -next V8 04/14] riscv: ptrace: Remove duplicate operation

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Date:   Mon, 05 Dec 2022 10:34:05 +0100
From:   Björn Töpel <bjorn@...nel.org>
To:     guoren@...nel.org, arnd@...db.de, guoren@...nel.org,
        palmer@...osinc.com, tglx@...utronix.de, peterz@...radead.org,
        luto@...nel.org, conor.dooley@...rochip.com, heiko@...ech.de,
        jszhang@...nel.org, lazyparser@...il.com, falcon@...ylab.org,
        chenhuacai@...nel.org, apatel@...tanamicro.com,
        atishp@...shpatra.org, palmer@...belt.com,
        paul.walmsley@...ive.com, mark.rutland@....com,
        zouyipeng@...wei.com, bigeasy@...utronix.de,
        David.Laight@...lab.com, chenzhongjin@...wei.com,
        greentime.hu@...ive.com, andy.chiu@...ive.com
Cc:     linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org,
        Guo Ren <guoren@...ux.alibaba.com>,
        Oleg Nesterov <oleg@...hat.com>
Subject: Re: [PATCH -next V8 04/14] riscv: ptrace: Remove duplicate operation

guoren@...nel.org writes:

> From: Guo Ren <guoren@...ux.alibaba.com>
>
> The TIF_SYSCALL_TRACE is controlled by a common code, see
> kernel/ptrace.c and include/linux/thread.h.

                                    ^^^ thread_info.h
>
> clear_task_syscall_work(child, SYSCALL_TRACE);
>
> Signed-off-by: Guo Ren <guoren@...ux.alibaba.com>
> Signed-off-by: Guo Ren <guoren@...nel.org>
> Reviewed-by: Oleg Nesterov <oleg@...hat.com>
> ---
>  arch/riscv/kernel/ptrace.c | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/arch/riscv/kernel/ptrace.c b/arch/riscv/kernel/ptrace.c
> index 2ae8280ae475..44f4b1ca315d 100644
> --- a/arch/riscv/kernel/ptrace.c
> +++ b/arch/riscv/kernel/ptrace.c
> @@ -212,7 +212,6 @@ unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n)
>  
>  void ptrace_disable(struct task_struct *child)
>  {
> -	clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
>  }
>  
>  long arch_ptrace(struct task_struct *child, long request,

This patch is also not neccesary for the series, but should be a
separate cleanup.