blob: 41090385a5c122ddfc32d7fd5b02e118d7c92be1 (
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
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
|
#include <linux/hrtimer.h>
#include <linux/workqueue.h>
#define MAX_TIMER_NUM (128) // max timer number
#define TIMER_MAX_WATCH_NUM (32) // A timer max watch number at once time
#define MAX_NAME_LEN (127) // max name length
typedef struct {
pid_t task_id; // current process id
char name[MAX_NAME_LEN + 1]; // name
void *ptr; // virtual address
int length_byte; // byte
long long threshold; // threshold value
unsigned char is_unsigned; // unsigned flag (true: unsigned, false: signed)
unsigned char above_threshold; // reverse flag (true: >, false: <)
unsigned long time_ns; // timer interval (ns)
} watch_arg;
typedef struct {
pid_t task_id; // current process id
char name[MAX_NAME_LEN + 2]; // name, last char automatically add '\0'
void *ptr; // user space virtual address
void *kptr; // kernel address + offset
int length_byte; // byte
long long threshold; // threshold value
long long true_value; // target true value | available after reach threshold
unsigned char is_unsigned; // unsigned flag (true: unsigned, false: signed)
unsigned char above_threshold; // reverse flag (true: >, false: <)
} kernel_watch_arg;
typedef struct {
unsigned long long time_ns; // hrTimer time interval (ns)
struct hrtimer hr_timer; // hrTimer
ktime_t kt; // hrTimer time
unsigned sentinel; // sentinel
kernel_watch_arg
k_watch_args[TIMER_MAX_WATCH_NUM]; // all watched kernel_watch_arg
int threshold_num; // all over threshold number,
// 0 means no handle needed
int threshold_buffer[TIMER_MAX_WATCH_NUM]; //
struct work_struct wk; // for handle
} kernel_watch_timer;
// Global variable
extern kernel_watch_timer
kernel_wtimer_list[MAX_TIMER_NUM]; // all kernel_watch_timer
extern volatile int kernel_wtimer_num; // current kernel_watch_timer number
// EXPORT_SYMBOL(kernel_wtimer_list); // export kernel_watch_timer_list
// EXPORT_SYMBOL(kernel_wtimer_num); // export kernel_watch_timer_num
unsigned char del_all_kwarg_by_pid(pid_t pid);
#define TIMER_START(timer) \
(hrtimer_start(&timer->hr_timer, timer->kt, HRTIMER_MODE_REL))
#define TIMER_CANCEL(timer) (hrtimer_cancel(&timer->hr_timer))
// for timer
kernel_watch_timer *get_timer(unsigned long long time_ns);
unsigned char timer_add_watch(kernel_watch_timer *timer,
kernel_watch_arg k_watch_arg);
unsigned char timer_del_watch_by_pid(kernel_watch_timer *timer, pid_t pid);
extern enum hrtimer_restart check_variable_cb(struct hrtimer *timer); // callback
void start_all_hrTimer(void);
void cancel_all_hrTimer(void);
// for work
void init_work_all_hrTimer(void);
void cancel_all_work(void);
void cancel_destory_all_work(void);
|
