2 * Performance event callchain support - SuperH architecture code
4 * Copyright (C) 2009 Paul Mundt
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
10 #include <linux/kernel.h>
11 #include <linux/sched.h>
12 #include <linux/perf_event.h>
13 #include <linux/percpu.h>
14 #include <asm/unwinder.h>
15 #include <asm/ptrace.h>
18 static void callchain_warning(void *data, char *msg)
23 callchain_warning_symbol(void *data, char *msg, unsigned long symbol)
27 static int callchain_stack(void *data, char *name)
32 static void callchain_address(void *data, unsigned long addr, int reliable)
34 struct perf_callchain_entry *entry = data;
37 perf_callchain_store(entry, addr);
40 static const struct stacktrace_ops callchain_ops = {
41 .warning = callchain_warning,
42 .warning_symbol = callchain_warning_symbol,
43 .stack = callchain_stack,
44 .address = callchain_address,
48 perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
50 perf_callchain_store(entry, regs->pc);
52 unwind_stack(NULL, regs, NULL, &callchain_ops, entry);