linux-kernel - [PATCH 06/32] avr32: copy_thread(): rename 'arg' argument to 'kthread

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Message-Id: <1426269888-25600-6-git-send-email-alexinbeijing@gmail.com>
Date:	Fri, 13 Mar 2015 20:04:21 +0200
From:	Alex Dowad <alexinbeijing@...il.com>
To:	linux-kernel@...t.kernel.org
Cc:	Haavard Skinnemoen <hskinnemoen@...il.com>,
	Hans-Christian Egtvedt <egtvedt@...fundet.no>,
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 06/32] avr32: 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/avr32/kernel/process.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/arch/avr32/kernel/process.c b/arch/avr32/kernel/process.c
index 42a53e74..a255bd3 100644
--- a/arch/avr32/kernel/process.c
+++ b/arch/avr32/kernel/process.c
@@ -279,20 +279,25 @@ asmlinkage void ret_from_fork(void);
 asmlinkage void ret_from_kernel_thread(void);
 asmlinkage void syscall_return(void);
 
+/*
+ * Copy architecture-specific thread state
+ */
 int copy_thread(unsigned long clone_flags, unsigned long usp,
-		unsigned long arg,
+		unsigned long kthread_arg,
 		struct task_struct *p)
 {
 	struct pt_regs *childregs = task_pt_regs(p);
 
 	if (unlikely(p->flags & PF_KTHREAD)) {
+		/* kernel thread */
 		memset(childregs, 0, sizeof(struct pt_regs));
-		p->thread.cpu_context.r0 = arg;
+		p->thread.cpu_context.r0 = kthread_arg;
 		p->thread.cpu_context.r1 = usp; /* fn */
 		p->thread.cpu_context.r2 = (unsigned long)syscall_return;
 		p->thread.cpu_context.pc = (unsigned long)ret_from_kernel_thread;
 		childregs->sr = MODE_SUPERVISOR;
 	} else {
+		/* user thread */
 		*childregs = *current_pt_regs();
 		if (usp)
 			childregs->sp = usp;
-- 
2.0.0.GIT

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