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metag: copy_thread(): rename 'arg' argument to 'kthread_arg'

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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: James Hogan <james.hogan@imgtec.com>
This commit is contained in:
Alex Dowad 2015-03-16 16:38:47 +02:00 committed by James Hogan
parent 06e5801b8c
commit 40346a0327
1 changed files with 7 additions and 3 deletions
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10
arch/metag/kernel/process.c
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@ -174,8 +174,11 @@ void show_regs(struct pt_regs *regs)
show_trace(NULL, (unsigned long *)regs->ctx.AX[0].U0, regs); show_trace(NULL, (unsigned long *)regs->ctx.AX[0].U0, regs);
} }
/*
* Copy architecture-specific thread state
*/
int copy_thread(unsigned long clone_flags, unsigned long usp, int copy_thread(unsigned long clone_flags, unsigned long usp,
unsigned long arg, struct task_struct *tsk) unsigned long kthread_arg, struct task_struct *tsk)
{ {
struct pt_regs *childregs = task_pt_regs(tsk); struct pt_regs *childregs = task_pt_regs(tsk);
void *kernel_context = ((void *) childregs + void *kernel_context = ((void *) childregs +
@ -202,12 +205,13 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
global_base = __core_reg_get(A1GbP); global_base = __core_reg_get(A1GbP);
childregs->ctx.AX[0].U1 = (unsigned long) global_base; childregs->ctx.AX[0].U1 = (unsigned long) global_base;
childregs->ctx.AX[0].U0 = (unsigned long) kernel_context; childregs->ctx.AX[0].U0 = (unsigned long) kernel_context;
/* Set D1Ar1=arg and D1RtP=usp (fn) */ /* Set D1Ar1=kthread_arg and D1RtP=usp (fn) */
childregs->ctx.DX[4].U1 = usp; childregs->ctx.DX[4].U1 = usp;
childregs->ctx.DX[3].U1 = arg; childregs->ctx.DX[3].U1 = kthread_arg;
tsk->thread.int_depth = 2; tsk->thread.int_depth = 2;
return 0; return 0;
} }
/* /*
* Get a pointer to where the new child's register block should have * Get a pointer to where the new child's register block should have
* been pushed. * been pushed.