diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mn10300/Kconfig | 1 | ||||
| -rw-r--r-- | arch/mn10300/include/asm/processor.h | 5 | ||||
| -rw-r--r-- | arch/mn10300/kernel/process.c | 49 |
3 files changed, 19 insertions, 36 deletions
diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig index 5cfb086..ddbdc33 100644 --- a/arch/mn10300/Kconfig +++ b/arch/mn10300/Kconfig @@ -8,6 +8,7 @@ config MN10300 select HAVE_ARCH_KGDB select HAVE_NMI_WATCHDOG if MN10300_WD_TIMER select GENERIC_CLOCKEVENTS + select GENERIC_KERNEL_THREAD config AM33_2 def_bool n diff --git a/arch/mn10300/include/asm/processor.h b/arch/mn10300/include/asm/processor.h index 0b844a2..8b80b19 100644 --- a/arch/mn10300/include/asm/processor.h +++ b/arch/mn10300/include/asm/processor.h @@ -133,11 +133,6 @@ static inline void start_thread(struct pt_regs *regs, extern void release_thread(struct task_struct *); /* - * create a kernel thread without removing it from tasklists - */ -extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); - -/* * Return saved PC of a blocked thread. */ extern unsigned long thread_saved_pc(struct task_struct *tsk); diff --git a/arch/mn10300/kernel/process.c b/arch/mn10300/kernel/process.c index 49af5ca..8ee09d8 100644 --- a/arch/mn10300/kernel/process.c +++ b/arch/mn10300/kernel/process.c @@ -162,24 +162,6 @@ void show_regs(struct pt_regs *regs) } /* - * create a kernel thread - */ -int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags) -{ - struct pt_regs regs = { - .a0 = (unsigned long) fn; - .d0 = (unsigned long) arg; - }; - - local_save_flags(regs.epsw); - regs.epsw |= EPSW_IE | EPSW_IM_7; - - /* Ok, create the new process.. */ - return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, ®s, 0, - NULL, NULL); -} - -/* * free current thread data structures etc.. */ void exit_thread(void) @@ -232,29 +214,34 @@ int copy_thread(unsigned long clone_flags, /* allocate the userspace exception frame and set it up */ c_ksp -= sizeof(struct pt_regs); c_regs = (struct pt_regs *) c_ksp; + c_ksp -= 12; /* allocate function call ABI slack */ + /* set up things up so the scheduler can start the new task */ p->thread.uregs = c_regs; + ti->frame = c_regs; + p->thread.a3 = (unsigned long) c_regs; + p->thread.sp = c_ksp; + p->thread.wchan = p->thread.pc; + p->thread.usp = c_usp; + + if (unlikely(!kregs)) { + memset(c_regs, 0, sizeof(struct pt_regs)); + c_regs->a0 = c_usp; /* function */ + c_regs->d0 = ustk_size; /* argument */ + local_save_flags(c_regs->epsw); + c_regs->epsw |= EPSW_IE | EPSW_IM_7; + p->thread.pc = (unsigned long) ret_from_kernel_thread; + return 0; + } *c_regs = *kregs; c_regs->sp = c_usp; c_regs->epsw &= ~EPSW_FE; /* my FPU */ - c_ksp -= 12; /* allocate function call ABI slack */ - /* the new TLS pointer is passed in as arg #5 to sys_clone() */ if (clone_flags & CLONE_SETTLS) c_regs->e2 = current_frame()->d3; - if (unlikely(!user_mode(kregs))) - p->thread.pc = (unsigned long) ret_from_kernel_thread; - else - p->thread.pc = (unsigned long) ret_from_fork; - - /* set up things up so the scheduler can start the new task */ - ti->frame = c_regs; - p->thread.a3 = (unsigned long) c_regs; - p->thread.sp = c_ksp; - p->thread.wchan = p->thread.pc; - p->thread.usp = c_usp; + p->thread.pc = (unsigned long) ret_from_fork; return 0; } |
