From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161121AbbCMSQI (ORCPT ); Fri, 13 Mar 2015 14:16:08 -0400 Received: from mail-we0-f179.google.com ([74.125.82.179]:42320 "EHLO mail-we0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1946119AbbCMSQD (ORCPT ); Fri, 13 Mar 2015 14:16:03 -0400 From: Alex Dowad To: linux-kernel@vger.kernel.org Cc: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Anton Blanchard , Paul Gortmaker , Christoph Lameter , Michael Neuling , Vineeth Vijayan , linuxppc-dev@lists.ozlabs.org (open list:LINUX FOR POWERPC...) Subject: [PATCH 23/32] powerpc: copy_thread(): rename 'arg' argument to 'kthread_arg' Date: Fri, 13 Mar 2015 20:14:46 +0200 Message-Id: <1426270496-26362-13-git-send-email-alexinbeijing@gmail.com> X-Mailer: git-send-email 2.0.0.GIT In-Reply-To: <1426270496-26362-1-git-send-email-alexinbeijing@gmail.com> References: <1426270496-26362-1-git-send-email-alexinbeijing@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- arch/powerpc/kernel/process.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index b4cc7be..febb50d 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1114,8 +1114,11 @@ static void setup_ksp_vsid(struct task_struct *p, unsigned long sp) */ extern unsigned long dscr_default; /* defined in arch/powerpc/kernel/sysfs.c */ +/* + * 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, *kregs; extern void ret_from_fork(void); @@ -1127,6 +1130,7 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, sp -= sizeof(struct pt_regs); childregs = (struct pt_regs *) sp; if (unlikely(p->flags & PF_KTHREAD)) { + /* kernel thread */ struct thread_info *ti = (void *)task_stack_page(p); memset(childregs, 0, sizeof(struct pt_regs)); childregs->gpr[1] = sp + sizeof(struct pt_regs); @@ -1137,11 +1141,12 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, clear_tsk_thread_flag(p, TIF_32BIT); childregs->softe = 1; #endif - childregs->gpr[15] = arg; + childregs->gpr[15] = kthread_arg; p->thread.regs = NULL; /* no user register state */ ti->flags |= _TIF_RESTOREALL; f = ret_from_kernel_thread; } else { + /* user thread */ struct pt_regs *regs = current_pt_regs(); CHECK_FULL_REGS(regs); *childregs = *regs; -- 2.0.0.GIT