blob: 6281f2fdf9cac9065aac4fe5150023b8da23406d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
// SPDX-License-Identifier: GPL-2.0
/*
* Performance event callchain support - SuperH architecture code
*
* Copyright (C) 2009 Paul Mundt
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/perf_event.h>
#include <linux/percpu.h>
#include <asm/unwinder.h>
#include <asm/ptrace.h>
static int callchain_stack(void *data, char *name)
{
return 0;
}
static void callchain_address(void *data, unsigned long addr, int reliable)
{
struct perf_callchain_entry_ctx *entry = data;
if (reliable)
perf_callchain_store(entry, addr);
}
static const struct stacktrace_ops callchain_ops = {
.stack = callchain_stack,
.address = callchain_address,
};
void
perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs)
{
perf_callchain_store(entry, regs->pc);
unwind_stack(NULL, regs, NULL, &callchain_ops, entry);
}
|
