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
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/**
* Copyright (C) ARM Limited 2010-2015. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef GATOR_H_
#define GATOR_H_
#include <linux/version.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/list.h>
#define GATOR_PERF_SUPPORT (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0))
#define GATOR_PERF_PMU_SUPPORT (GATOR_PERF_SUPPORT && defined(CONFIG_PERF_EVENTS) && (!(defined(__arm__) || defined(__aarch64__)) || defined(CONFIG_HW_PERF_EVENTS)))
#define GATOR_NO_PERF_SUPPORT (!(GATOR_PERF_SUPPORT))
#define GATOR_CPU_FREQ_SUPPORT ((LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 38)) && defined(CONFIG_CPU_FREQ))
#define GATOR_IKS_SUPPORT defined(CONFIG_BL_SWITCHER)
/* cpu ids */
#define ARM1136 0x41b36
#define ARM1156 0x41b56
#define ARM1176 0x41b76
#define ARM11MPCORE 0x41b02
#define CORTEX_A5 0x41c05
#define CORTEX_A7 0x41c07
#define CORTEX_A8 0x41c08
#define CORTEX_A9 0x41c09
#define CORTEX_A15 0x41c0f
#define CORTEX_A12 0x41c0d
#define CORTEX_A17 0x41c0e
#define SCORPION 0x5100f
#define SCORPIONMP 0x5102d
#define KRAITSIM 0x51049
#define KRAIT 0x5104d
#define KRAIT_S4_PRO 0x5106f
#define CORTEX_A53 0x41d03
#define CORTEX_A57 0x41d07
#define CORTEX_A72 0x41d08
#define OTHER 0xfffff
/* gpu enums */
#define MALI_4xx 1
#define MALI_MIDGARD 2
#define MAXSIZE_CORE_NAME 32
struct gator_cpu {
const int cpuid;
/* Human readable name */
const char core_name[MAXSIZE_CORE_NAME];
/* gatorfs event and Perf PMU name */
const char *const pmnc_name;
/* compatible from Documentation/devicetree/bindings/arm/cpus.txt */
const char *const dt_name;
const int pmnc_counters;
};
const struct gator_cpu *gator_find_cpu_by_cpuid(const u32 cpuid);
const struct gator_cpu *gator_find_cpu_by_pmu_name(const char *const name);
/******************************************************************************
* Filesystem
******************************************************************************/
struct dentry *gatorfs_mkdir(struct super_block *sb, struct dentry *root,
char const *name);
int gatorfs_create_ulong(struct super_block *sb, struct dentry *root,
char const *name, unsigned long *val);
int gatorfs_create_ro_ulong(struct super_block *sb, struct dentry *root,
char const *name, unsigned long *val);
/******************************************************************************
* Tracepoints
******************************************************************************/
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 32)
# error Kernels prior to 2.6.32 not supported
#elif LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35)
# define GATOR_DEFINE_PROBE(probe_name, proto) \
static void probe_##probe_name(PARAMS(proto))
# define GATOR_REGISTER_TRACE(probe_name) \
register_trace_##probe_name(probe_##probe_name)
# define GATOR_UNREGISTER_TRACE(probe_name) \
unregister_trace_##probe_name(probe_##probe_name)
#elif LINUX_VERSION_CODE < KERNEL_VERSION(3, 15, 0)
# define GATOR_DEFINE_PROBE(probe_name, proto) \
static void probe_##probe_name(void *data, PARAMS(proto))
# define GATOR_REGISTER_TRACE(probe_name) \
register_trace_##probe_name(probe_##probe_name, NULL)
# define GATOR_UNREGISTER_TRACE(probe_name) \
unregister_trace_##probe_name(probe_##probe_name, NULL)
#else
# define GATOR_DEFINE_PROBE(probe_name, proto) \
extern struct tracepoint *gator_tracepoint_##probe_name; \
static void probe_##probe_name(void *data, PARAMS(proto))
# define GATOR_REGISTER_TRACE(probe_name) \
((gator_tracepoint_##probe_name == NULL) || tracepoint_probe_register(gator_tracepoint_##probe_name, probe_##probe_name, NULL))
# define GATOR_UNREGISTER_TRACE(probe_name) \
tracepoint_probe_unregister(gator_tracepoint_##probe_name, probe_##probe_name, NULL)
#endif
/******************************************************************************
* Events
******************************************************************************/
struct gator_interface {
/* Complementary function to init */
void (*shutdown)(void);
int (*create_files)(struct super_block *sb, struct dentry *root);
int (*start)(void);
/* Complementary function to start */
void (*stop)(void);
int (*online)(int **buffer, bool migrate);
int (*offline)(int **buffer, bool migrate);
/* called in process context but may not be running on core 'cpu' */
void (*online_dispatch)(int cpu, bool migrate);
/* called in process context but may not be running on core 'cpu' */
void (*offline_dispatch)(int cpu, bool migrate);
int (*read)(int **buffer, bool sched_switch);
int (*read64)(long long **buffer);
int (*read_proc)(long long **buffer, struct task_struct *);
struct list_head list;
};
int gator_events_install(struct gator_interface *interface);
int gator_events_get_key(void);
u32 gator_cpuid(void);
void gator_backtrace_handler(struct pt_regs *const regs);
void gator_marshal_activity_switch(int core, int key, int activity, int pid);
#if !GATOR_IKS_SUPPORT
#define get_physical_cpu() smp_processor_id()
#define lcpu_to_pcpu(lcpu) lcpu
#define pcpu_to_lcpu(pcpu) pcpu
#else
#define get_physical_cpu() lcpu_to_pcpu(get_logical_cpu())
int lcpu_to_pcpu(const int lcpu);
int pcpu_to_lcpu(const int pcpu);
#endif
#define get_logical_cpu() smp_processor_id()
#define on_primary_core() (get_logical_cpu() == 0)
#endif /* GATOR_H_ */
|
