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From: guoren@kernel.org
To: guoren@kernel.org, arnd@arndb.de
Cc: linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org,
	linux-arch@vger.kernel.org, Tobias Klauser <tklauser@distanz.ch>,
	Guo Ren <guoren@linux.alibaba.com>
Subject: [PATCH 01/13] csky: remove unusued thread_saved_pc and *_segments functions/macros
Date: Sat,  1 Aug 2020 01:14:01 +0000	[thread overview]
Message-ID: <1596244453-98575-2-git-send-email-guoren@kernel.org> (raw)
Message-ID: <20200801011401.VcQUPhIBgMLLgU__899cBLDjEA465lrRj8sJG_Ocvy0@z> (raw)
In-Reply-To: <1596244453-98575-1-git-send-email-guoren@kernel.org>

From: Tobias Klauser <tklauser@distanz.ch>

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>
Signed-off-by: Guo Ren <guoren@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
---
 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 24442d8..4800f65 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 8b3fad0..3da63cf 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,
-- 
2.7.4

  reply	other threads:[~2020-08-01  1:14 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-01  1:14 [PATCH 00/13] Update csky subsystem for linux-5.9-rc1 guoren
2020-08-01  1:14 ` guoren [this message]
2020-08-01  1:14   ` [PATCH 01/13] csky: remove unusued thread_saved_pc and *_segments functions/macros guoren
2020-08-01  1:14 ` [PATCH 02/13] csky: Add SECCOMP_FILTER supported guoren
2020-08-01  1:14   ` guoren
2020-08-01  1:14 ` [PATCH 03/13] csky: Add cpu feature register hint for smp guoren
2020-08-01  1:14   ` guoren
2020-08-01  1:14 ` [PATCH 04/13] csky: Fixup duplicated restore sp in RESTORE_REGS_FTRACE guoren
2020-08-01  1:14   ` guoren
2020-08-01  1:14 ` [PATCH 05/13] csky: Fixup kprobes handler couldn't change pc guoren
2020-08-01  1:14   ` guoren
2020-08-01  1:14 ` [PATCH 06/13] csky: Add support for function error injection guoren
2020-08-01  1:14 ` [PATCH 07/13] csky: Optimize the trap processing flow guoren
2020-08-01  1:14 ` [PATCH 08/13] csky: Use top-down mmap layout guoren
2020-08-01  1:14 ` [PATCH 09/13] csky: Set CONFIG_NR_CPU 4 as default guoren
2020-08-01  1:14   ` guoren
2020-08-01  1:14 ` [PATCH 10/13] csky: Fixup warning by EXPORT_SYMBOL(kmap) guoren
2020-08-01  1:14   ` guoren
2020-08-01  1:14 ` [PATCH 11/13] csky: Add irq_work support guoren
2020-08-01  1:14 ` [PATCH 12/13] csky: Add arch_show_interrupts for IPI interrupts guoren
2020-08-01  1:14   ` guoren
2020-08-01  1:14 ` [PATCH 13/13] csky: Add context tracking support guoren
2020-08-01  1:14   ` guoren

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