4  * Stack trace utility functions etc.
29 static void save_context_stack(struct stack_trace *trace, unsigned long sp,  in save_context_stack()  argument
43 			if (!trace->skip)  in save_context_stack()
44 				trace->entries[trace->nr_entries++] = ip;  in save_context_stack()
46 				trace->skip--;  in save_context_stack()
49 		if (trace->nr_entries >= trace->max_entries)  in save_context_stack()
56 void save_stack_trace(struct stack_trace *trace)  in save_stack_trace()  argument
62 	save_context_stack(trace, sp, current, 1);  in save_stack_trace()
66 void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)  in save_stack_trace_tsk()  argument
78 	save_context_stack(trace, sp, tsk, 0);  in save_stack_trace_tsk()
85 save_stack_trace_regs(struct pt_regs *regs, struct stack_trace *trace)  in save_stack_trace_regs()  argument
87 	save_context_stack(trace, regs->gpr[1], current, 0);  in save_stack_trace_regs()
94  * stack.  Otherwise it guarantees that the stack trace is reliable.
99 					   struct stack_trace *trace)  in __save_stack_trace_tsk_reliable()  argument
121 		 * an unreliable stack trace until it's been  in __save_stack_trace_tsk_reliable()
195 		if (trace->nr_entries >= trace->max_entries)  in __save_stack_trace_tsk_reliable()
197 		if (!trace->skip)  in __save_stack_trace_tsk_reliable()
198 			trace->entries[trace->nr_entries++] = ip;  in __save_stack_trace_tsk_reliable()
200 			trace->skip--;  in __save_stack_trace_tsk_reliable()
206 				  struct stack_trace *trace)  in save_stack_trace_tsk_reliable()  argument
217 	ret = __save_stack_trace_tsk_reliable(tsk, trace);  in save_stack_trace_tsk_reliable()
262 		pr_warn("Back trace of paca->saved_r1 (0x%016llx) (possibly stale):\n", p->saved_r1);  in raise_backtrace_ipi()