c6x: switch to generic kernel_thread() (5687580b) · Commits · e / devices / android_kernel_xiaomi_nabu

arch/c6x/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -17,6 +17,7 @@ config C6X
		select OF
		select OF_EARLY_FLATTREE
		select GENERIC_CLOCKEVENTS
		select GENERIC_KERNEL_THREAD

		config MMU
		def_bool n

+0 −2

Original line number	Diff line number	Diff line
		@@ -92,8 +92,6 @@ static inline void release_thread(struct task_struct *dead_task)
		{
		}

		extern int kernel_thread(int (fn)(void ), void * arg, unsigned long flags);

		#define copy_segments(tsk, mm) do { } while (0)
		#define release_segments(mm) do { } while (0)

+5 −19

Original line number	Diff line number	Diff line
		@@ -104,22 +104,6 @@ void machine_power_off(void)
		halt_loop();
		}

		/*
		* Create a kernel thread
		*/
		int kernel_thread(int (fn)(void ), void * arg, unsigned long flags)
		{
		struct pt_regs regs = {
		.a0 = (unsigned long)fn,
		.a1 = (unsigned long)arg,
		.tsr = 0, /* kernel mode */
		};

		/* Ok, create the new process.. */
		return do_fork(flags \| CLONE_VM \| CLONE_UNTRACED, -1, &regs,
		0, NULL, NULL);
		}

		void flush_thread(void)
		{
		}
		@@ -177,14 +161,16 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,

		childregs = task_pt_regs(p);

		childregs = regs;

		if (usp == -1) {
		if (!regs) {
		/* case of __kernel_thread: we return to supervisor space */
		memset(childregs, 0, sizeof(struct pt_regs));
		childregs->sp = (unsigned long)(childregs + 1);
		p->thread.pc = (unsigned long) ret_from_kernel_thread;
		childregs->a0 = usp; /* function */
		childregs->a1 = ustk_size; /* argument */
		} else {
		/* Otherwise use the given stack */
		childregs = regs;
		childregs->sp = usp;
		p->thread.pc = (unsigned long) ret_from_fork;
		}