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// SPDX-License-Identifier: GPL-2.0
/*
* arch/ia64/kernel/stacktrace.c
*
* Stack trace management functions
*
*/
#include <linux/sched.h>
#include <linux/stacktrace.h>
#include <linux/module.h>
static void
ia64_do_save_stack(struct unw_frame_info *info, void *arg)
{
struct stack_trace *trace = arg;
unsigned long ip;
int skip = trace->skip;
trace->nr_entries = 0;
do {
unw_get_ip(info, &ip);
if (ip == 0)
break;
if (skip == 0) {
trace->entries[trace->nr_entries++] = ip;
if (trace->nr_entries == trace->max_entries)
break;
} else
skip--;
} while (unw_unwind(info) >= 0);
}
/*
* Save stack-backtrace addresses into a stack_trace buffer.
*/
void save_stack_trace(struct stack_trace *trace)
{
unw_init_running(ia64_do_save_stack, trace);
}
EXPORT_SYMBOL(save_stack_trace);
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