linux-kernel - [PATCH 09/32] cris/arch-v10: copy_thread(): rename 'arg' argument to 'kthread

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Message-Id: <1426269888-25600-9-git-send-email-alexinbeijing@gmail.com>
Date:	Fri, 13 Mar 2015 20:04:24 +0200
From:	Alex Dowad <alexinbeijing@...il.com>
To:	linux-kernel@...t.kernel.org
Cc:	Mikael Starvik <starvik@...s.com>,
	Jesper Nilsson <jesper.nilsson@...s.com>,
	linux-cris-kernel@...s.com (open list:CRIS PORT),
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 09/32] cris/arch-v10: copy_thread(): rename 'arg' argument to 'kthread_arg'

The 'arg' argument to copy_thread() is only ever used when forking a new
kernel thread. Hence, rename it to 'kthread_arg' for clarity (and consistency
with do_fork() and other arch-specific implementations of copy_thread()).

Signed-off-by: Alex Dowad <alexinbeijing@...il.com>
---
 arch/cris/arch-v10/kernel/process.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/arch/cris/arch-v10/kernel/process.c b/arch/cris/arch-v10/kernel/process.c
index 02b7834..c8c73d3 100644
--- a/arch/cris/arch-v10/kernel/process.c
+++ b/arch/cris/arch-v10/kernel/process.c
@@ -94,8 +94,11 @@ unsigned long thread_saved_pc(struct task_struct *t)
 asmlinkage void ret_from_fork(void);
 asmlinkage void ret_from_kernel_thread(void);
 
+/*
+ * Copy architecture-specific thread state
+ */
 int copy_thread(unsigned long clone_flags, unsigned long usp,
-		unsigned long arg, struct task_struct *p)
+		unsigned long kthread_arg, struct task_struct *p)
 {
 	struct pt_regs *childregs = task_pt_regs(p);
 	struct switch_stack *swstack = ((struct switch_stack *)childregs) - 1;
@@ -105,10 +108,11 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
 	 */
 
 	if (unlikely(p->flags & PF_KTHREAD)) {
+		/* kernel thread */
 		memset(swstack, 0,
 			sizeof(struct switch_stack) + sizeof(struct pt_regs));
 		swstack->r1 = usp;
-		swstack->r2 = arg;
+		swstack->r2 = kthread_arg;
 		childregs->dccr = 1 << I_DCCR_BITNR;
 		swstack->return_ip = (unsigned long) ret_from_kernel_thread;
 		p->thread.ksp = (unsigned long) swstack;
-- 
2.0.0.GIT

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