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 <alexinbeij...@gmail.com>
---
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
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