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gerrit-public.fairphone.software / kernel / msm / 402955bf8fb9587538597ee897777a14f957afc5 / . / arch / arm / mach-msm / perf_trace_counters.h
blob: ce7e336aa40d6f8543e2c53f1d2f0da69fe99730 [file] [log] [blame]
Ashwin Chaugule4eaee1a2013-03-14 18:37:49 -0400[diff] [blame]1/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
2 *
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License version 2 and
5 * only version 2 as published by the Free Software Foundation.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 */
12
13#undef TRACE_SYSTEM
14#define TRACE_SYSTEM perf_trace_counters
15
16#if !defined(_PERF_TRACE_COUNTERS_H_) || defined(TRACE_HEADER_MULTI_READ)
17#define _PERF_TRACE_COUNTERS_H_
18
19/* Ctr index for PMCNTENSET/CLR */
20#define CC 0x80000000
21#define C0 0x1
22#define C1 0x10
23#define C2 0x100
24#define C3 0x1000
25
26
27#include <linux/sched.h>
28#include <linux/tracepoint.h>
29
30TRACE_EVENT(sched_switch_with_ctrs,
31
32 TP_PROTO(pid_t prev, pid_t next),
33
34 TP_ARGS(prev, next),
35
36 TP_STRUCT__entry(
37 __field(pid_t, old_pid)
38 __field(pid_t, new_pid)
39 __field(u32, cctr)
40 __field(u32, ctr0)
41 __field(u32, ctr1)
42 __field(u32, ctr2)
43 __field(u32, ctr3)
44 ),
45
46 TP_fast_assign(
47 __entry->old_pid = prev;
48 __entry->new_pid = next;
49
50 /* cycle counter */
51 /* Disable */
52 asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r"(CC));
53 /* Read value */
54 asm volatile("mrc p15, 0, %0, c9, c13, 0"
55 : "=r"(__entry->cctr));
56 /* Reset */
57 asm volatile("mcr p15, 0, %0, c9, c13, 0" : : "r"(0));
58 /* Enable */
59 asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r"(CC));
60
61 /* ctr 0 */
62 /* Disable */
63 asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r"(C0));
64 /* Select */
65 asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r"(0));
66 /* Read value */
67 asm volatile("mrc p15, 0, %0, c9, c13, 2"
68 : "=r"(__entry->ctr0));
69 /* Reset */
70 asm volatile("mcr p15, 0, %0, c9, c13, 2" : : "r"(0));
71 /* Enable */
72 asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r"(C0));
73
74 /* ctr 1 */
75 /* Disable */
76 asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r"(C1));
77 /* Select */
78 asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r"(1));
79 /* Read value */
80 asm volatile("mrc p15, 0, %0, c9, c13, 2"
81 : "=r"(__entry->ctr1));
82 /* Reset */
83 asm volatile("mcr p15, 0, %0, c9, c13, 2" : : "r"(0));
84 /* Enable */
85 asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r"(C1));
86
87 /* ctr 2 */
88 /* Disable */
89 asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r"(C2));
90 /* Select */
91 asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r"(2));
92 /* Read value */
93 asm volatile("mrc p15, 0, %0, c9, c13, 2"
94 : "=r"(__entry->ctr2));
95 /* Reset */
96 asm volatile("mcr p15, 0, %0, c9, c13, 2" : : "r"(0));
97 /* Enable */
98 asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r"(C2));
99
100 /* ctr 3 */
101 /* Disable */
102 asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r"(C3));
103 /* Select */
104 asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r"(3));
105 /* Read value */
106 asm volatile("mrc p15, 0, %0, c9, c13, 2"
107 : "=r"(__entry->ctr3));
108 /* Reset */
109 asm volatile("mcr p15, 0, %0, c9, c13, 2" : : "r"(0));
110 /* Enable */
111 asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r"(C3));
112
113 ),
114
115 TP_printk("prev_pid=%d, next_pid=%d, CCNTR: %u, CTR0: %u," \
116 " CTR1: %u, CTR2: %u, CTR3: %u",
117 __entry->old_pid, __entry->new_pid,
118 __entry->cctr, __entry->ctr0, __entry->ctr1,
119 __entry->ctr2, __entry->ctr3)
120);
121
122#endif
123#undef TRACE_INCLUDE_PATH
124#define TRACE_INCLUDE_PATH .
125#define TRACE_INCLUDE_FILE perf_trace_counters
126#include <trace/define_trace.h>
127