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SubjectRe: [PATCH] csky: remove unusued thread_saved_pc and *_segments functions/macros
Acked-by: Guo Ren <guoren@kernel.org>

On Wed, Jun 10, 2020 at 11:45 PM Tobias Klauser <tklauser@distanz.ch> wrote:
>
> These are used nowhere in the tree (except for some architectures which
> define them for their own use) and were already removed for other
> architectures in:
>
> commit 6474924e2b5d ("arch: remove unused macro/function thread_saved_pc()")
> commit c17c02040bf0 ("arch: remove unused *_segments() macros/functions")
>
> Remove them from arch/csky as well.
>
> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
> ---
> arch/csky/include/asm/processor.h | 6 ------
> arch/csky/kernel/process.c | 10 ----------
> 2 files changed, 16 deletions(-)
>
> diff --git a/arch/csky/include/asm/processor.h b/arch/csky/include/asm/processor.h
> index 24442d8e86f9..4800f6563abb 100644
> --- a/arch/csky/include/asm/processor.h
> +++ b/arch/csky/include/asm/processor.h
> @@ -82,12 +82,6 @@ static inline void release_thread(struct task_struct *dead_task)
>
> extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
>
> -#define copy_segments(tsk, mm) do { } while (0)
> -#define release_segments(mm) do { } while (0)
> -#define forget_segments() do { } while (0)
> -
> -extern unsigned long thread_saved_pc(struct task_struct *tsk);
> -
> unsigned long get_wchan(struct task_struct *p);
>
> #define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc)
> diff --git a/arch/csky/kernel/process.c b/arch/csky/kernel/process.c
> index 8b3fad062ab2..3da63cf0bfde 100644
> --- a/arch/csky/kernel/process.c
> +++ b/arch/csky/kernel/process.c
> @@ -30,16 +30,6 @@ asmlinkage void ret_from_kernel_thread(void);
> */
> void flush_thread(void){}
>
> -/*
> - * Return saved PC from a blocked thread
> - */
> -unsigned long thread_saved_pc(struct task_struct *tsk)
> -{
> - struct switch_stack *sw = (struct switch_stack *)tsk->thread.sp;
> -
> - return sw->r15;
> -}
> -
> int copy_thread_tls(unsigned long clone_flags,
> unsigned long usp,
> unsigned long kthread_arg,
> --
> 2.27.0
>


--
Best Regards
Guo Ren

ML: https://lore.kernel.org/linux-csky/

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