// 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);