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

[Guo Ren]

On Mon, Dec 5, 2022 at 5:34 PM Björn Töpel <bjorn@xxxxxxxxxx> wrote:
>
> guoren@xxxxxxxxxx writes:
>
> > From: Guo Ren <guoren@xxxxxxxxxxxxxxxxx>
> >
> > 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@xxxxxxxxxxxxxxxxx>
> > Signed-off-by: Guo Ren <guoren@xxxxxxxxxx>
> > Reviewed-by: Oleg Nesterov <oleg@xxxxxxxxxx>
> > ---
> >  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.
Maybe I would deprecate this patch because the generic entry would
delete the whole ptrace_disable().



-- 
Best Regards
 Guo Ren