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Commit 6eca8933 authored by Alex Dowad's avatar Alex Dowad Committed by Michael Ellerman
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powerpc/kernel: Rename copy_thread() '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.

Signed-off-by: default avatarAlex Dowad <alexinbeijing@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent a908f5de

arch/powerpc/kernel/process.c

+7 −2
Original line number Diff line number Diff line
@@ -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;