projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 830fafec PM |
1 | /* |
| 2 | * Performance event callchain support - SuperH architecture code | |
| 3 | * | |
| 4 | * Copyright (C) 2009 Paul Mundt | |
| 5 | * | |
| 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 | |
| 8 | * for more details. | |
| 9 | */ | |
| 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> | |
| 16 | ||
| 830fafec PM |
17 | static int callchain_stack(void *data, char *name) |
| 18 | { | |
| 19 | return 0; | |
| 20 | } | |
| 21 | ||
| 22 | static void callchain_address(void *data, unsigned long addr, int reliable) | |
| 23 | { | |
| 24 | struct perf_callchain_entry *entry = data; | |
| 25 | ||
| 26 | if (reliable) | |
| 70791ce9 | 27 | perf_callchain_store(entry, addr); |
| 830fafec PM |
28 | } |
| 29 | ||
| 30 | static const struct stacktrace_ops callchain_ops = { | |
| 830fafec PM |
31 | .stack = callchain_stack, |
| 32 | .address = callchain_address, | |
| 33 | }; | |
| 34 | ||
| 56962b44 FW |
35 | void |
| 36 | perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs) | |
| 830fafec | 37 | { |
| 70791ce9 | 38 | perf_callchain_store(entry, regs->pc); |
| 830fafec PM |
39 | |
| 40 | unwind_stack(NULL, regs, NULL, &callchain_ops, entry); | |
| 41 | } |