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
);