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Commit a1850e9c authored by Richard Weinberger's avatar Richard Weinberger
Browse files

um: Get rid of thread_struct->saved_task 



As we have a sane show_stack() now, we can drop
the ->saved_task hack.

Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent f72c22e4

arch/um/drivers/mconsole_kern.c

+2 −4
Original line number Diff line number Diff line
@@ -645,11 +645,9 @@ void mconsole_sysrq(struct mc_request *req) 


static void stack_proc(void *arg)

{

	struct task_struct *from = current, *to = arg;

	struct task_struct *task = arg;



	to->thread.saved_task = from;

	rcu_user_hooks_switch(from, to);

	switch_to(from, to, from);

	show_stack(task, NULL);

}



/*

arch/um/include/asm/processor-generic.h

+0 −1
Original line number Diff line number Diff line
@@ -19,7 +19,6 @@ struct task_struct; 
struct mm_struct;



struct thread_struct {

	struct task_struct *saved_task;

	struct pt_regs regs;

	struct pt_regs *segv_regs;

	int singlestep_syscall;

arch/um/kernel/process.c

+2 −13
Original line number Diff line number Diff line
@@ -82,20 +82,9 @@ void *__switch_to(struct task_struct *from, struct task_struct *to) 
	to->thread.prev_sched = from;

	set_current(to);



	do {

		current->thread.saved_task = NULL;



		switch_threads(&from->thread.switch_buf,

			       &to->thread.switch_buf);



	switch_threads(&from->thread.switch_buf, &to->thread.switch_buf);

	arch_switch_to(current);



		if (current->thread.saved_task)

			show_regs(&(current->thread.regs));

		to = current->thread.saved_task;

		from = current;

	} while (current->thread.saved_task);



	return current->thread.prev_sched;

}