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| author | Alex Dowad <alexinbeijing@gmail.com> | 2015-03-13 20:14:46 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-03-20 12:41:15 +1100 |
| commit | 6eca8933d3ff17bff39d5f10a2a22366d8622fa6 (patch) | |
| tree | c2b7ecc412f5eae949f3808b810e5bef6b1c593e /arch/powerpc/kernel/process.c | |
| parent | a908f5de3b10d1a684d4fc3cb55ee0a7662ff293 (diff) | |
| download | op-kernel-dev-6eca8933d3ff17bff39d5f10a2a22366d8622fa6.zip op-kernel-dev-6eca8933d3ff17bff39d5f10a2a22366d8622fa6.tar.gz | |
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: Alex Dowad <alexinbeijing@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/process.c')
| -rw-r--r-- | arch/powerpc/kernel/process.c | 9 |
1 files 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; |
