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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/*
* Copyright © 2012 Keith Packard <keithp@keithp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include <ao.h>
#include <ao_sample_profile.h>
#include <ao_task.h>
#ifndef AO_SAMPLE_PROFILE_LOW_PC
#define AO_SAMPLE_PROFILE_LOW_PC 0x08002000
#endif
#ifndef AO_SAMPLE_PROFILE_HIGH_PC
#define AO_SAMPLE_PROFILE_HIGH_PC 0x0800f000
#endif
#ifndef AO_SAMPLE_PROFILE_SHIFT
#define AO_SAMPLE_PROFILE_SHIFT 6
#endif
#define AO_SAMPLE_PROFILE_RANGE (AO_SAMPLE_PROFILE_HIGH_PC - AO_SAMPLE_PROFILE_LOW_PC)
#define AO_SAMPLE_PROFILE_NUM (AO_SAMPLE_PROFILE_RANGE >> AO_SAMPLE_PROFILE_SHIFT)
static uint16_t prev_tick;
static uint16_t samples[AO_SAMPLE_PROFILE_NUM];
static uint8_t missed[AO_SAMPLE_PROFILE_NUM/8];
static uint16_t max_miss;
static uint32_t task, isr, os, idle;
extern uint8_t ao_idle_loc;
void
ao_sample_profile_point(uint32_t pc, uint16_t tick, uint8_t in_isr)
{
uint16_t delta = tick - prev_tick;
if (pc < AO_SAMPLE_PROFILE_LOW_PC)
return;
if (pc >= AO_SAMPLE_PROFILE_HIGH_PC)
return;
if (ao_cur_task) {
uint8_t *sp;
int32_t sp_delta;
asm("mov %0,sp" : "=&r" (sp));
sp_delta = sp - (uint8_t *) ao_cur_task->stack;
if (-96 < sp_delta && sp_delta < 16)
ao_panic(AO_PANIC_STACK);
}
if (in_isr)
isr += delta;
else if (ao_cur_task) {
ao_cur_task->ticks += delta;
task += delta;
} else if (pc == (uint32_t) &ao_idle_loc)
idle += delta;
else
os += delta;
pc -= AO_SAMPLE_PROFILE_LOW_PC;
pc >>= AO_SAMPLE_PROFILE_SHIFT;
samples[pc] += delta;
if (delta > 1)
missed[pc >> 3] |= (1 << (pc & 7));
if (delta > max_miss)
max_miss = delta;
prev_tick = tick;
}
static void
ao_sample_profile_start(void)
{
prev_tick = ao_sample_profile_timer_start();
}
static void
ao_sample_profile_stop(void)
{
ao_sample_profile_timer_stop();
}
static void
ao_sample_profile_dump(void)
{
uint16_t a;
uint8_t t;
printf ("task %6d\n", task);
printf ("isr %6d\n", isr);
printf ("os %6d\n", os);
printf ("idle %6d\n", idle);
printf ("irq blocked %d\n", max_miss);
for (t = 0; t < ao_num_tasks; t++)
printf ("task %6d %6d %6d %s\n",
ao_tasks[t]->ticks,
ao_tasks[t]->yields,
ao_tasks[t]->max_run,
ao_tasks[t]->name);
for (a = 0; a < AO_SAMPLE_PROFILE_NUM; a++) {
if (samples[a])
printf ("%04x %c %u\n",
(a << AO_SAMPLE_PROFILE_SHIFT) + AO_SAMPLE_PROFILE_LOW_PC,
missed[a >> 3] & (1 << (a & 7)) ? '*' : ' ',
samples[a]);
}
}
static void
ao_sample_profile_clear(void)
{
int t;
task = isr = os = idle = 0;
max_miss = 0;
memset(samples, '\0', sizeof (samples));
memset(missed, '\0', sizeof (missed));
for (t = 0; t < ao_num_tasks; t++) {
ao_tasks[t]->ticks = 0;
ao_tasks[t]->yields = 0;
ao_tasks[t]->max_run = 0;
}
}
static void
ao_sample_profile_cmd(void)
{
ao_cmd_white();
switch (ao_cmd_lex_c) {
case '1':
ao_sample_profile_start();
break;
case '0':
ao_sample_profile_stop();
break;
case 'd':
ao_sample_profile_dump();
break;
case 'c':
ao_sample_profile_clear();
break;
default:
ao_cmd_status = ao_cmd_syntax_error;
break;
}
}
static __code struct ao_cmds ao_sample_profile_cmds[] = {
{ ao_sample_profile_cmd, "S <1 start,0 stop, d dump,c clear>\0Sample profile" },
{ 0, NULL }
};
void
ao_sample_profile_init(void)
{
ao_sample_profile_timer_init();
ao_cmd_register(&ao_sample_profile_cmds[0]);
ao_sample_profile_clear();
}
|
