1
2#ifdef CONFIG_SCHEDSTATS
3
4
5
6
7static inline void
8rq_sched_info_arrive(struct rq *rq, unsigned long long delta)
9{
10 if (rq) {
11 rq->rq_sched_info.run_delay += delta;
12 rq->rq_sched_info.pcount++;
13 }
14}
15
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17
18
19static inline void
20rq_sched_info_depart(struct rq *rq, unsigned long long delta)
21{
22 if (rq)
23 rq->rq_cpu_time += delta;
24}
25
26static inline void
27rq_sched_info_dequeued(struct rq *rq, unsigned long long delta)
28{
29 if (rq)
30 rq->rq_sched_info.run_delay += delta;
31}
32# define schedstat_inc(rq, field) do { (rq)->field++; } while (0)
33# define schedstat_add(rq, field, amt) do { (rq)->field += (amt); } while (0)
34# define schedstat_set(var, val) do { var = (val); } while (0)
35#else
36static inline void
37rq_sched_info_arrive(struct rq *rq, unsigned long long delta)
38{}
39static inline void
40rq_sched_info_dequeued(struct rq *rq, unsigned long long delta)
41{}
42static inline void
43rq_sched_info_depart(struct rq *rq, unsigned long long delta)
44{}
45# define schedstat_inc(rq, field) do { } while (0)
46# define schedstat_add(rq, field, amt) do { } while (0)
47# define schedstat_set(var, val) do { } while (0)
48#endif
49
50#if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT)
51static inline void sched_info_reset_dequeued(struct task_struct *t)
52{
53 t->sched_info.last_queued = 0;
54}
55
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60
61
62static inline void sched_info_dequeued(struct task_struct *t)
63{
64 unsigned long long now = rq_clock(task_rq(t)), delta = 0;
65
66 if (unlikely(sched_info_on()))
67 if (t->sched_info.last_queued)
68 delta = now - t->sched_info.last_queued;
69 sched_info_reset_dequeued(t);
70 t->sched_info.run_delay += delta;
71
72 rq_sched_info_dequeued(task_rq(t), delta);
73}
74
75
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77
78
79
80static void sched_info_arrive(struct task_struct *t)
81{
82 unsigned long long now = rq_clock(task_rq(t)), delta = 0;
83
84 if (t->sched_info.last_queued)
85 delta = now - t->sched_info.last_queued;
86 sched_info_reset_dequeued(t);
87 t->sched_info.run_delay += delta;
88 t->sched_info.last_arrival = now;
89 t->sched_info.pcount++;
90
91 rq_sched_info_arrive(task_rq(t), delta);
92}
93
94
95
96
97
98
99static inline void sched_info_queued(struct task_struct *t)
100{
101 if (unlikely(sched_info_on()))
102 if (!t->sched_info.last_queued)
103 t->sched_info.last_queued = rq_clock(task_rq(t));
104}
105
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110
111
112
113static inline void sched_info_depart(struct task_struct *t)
114{
115 unsigned long long delta = rq_clock(task_rq(t)) -
116 t->sched_info.last_arrival;
117
118 rq_sched_info_depart(task_rq(t), delta);
119
120 if (t->state == TASK_RUNNING)
121 sched_info_queued(t);
122}
123
124
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127
128
129static inline void
130__sched_info_switch(struct task_struct *prev, struct task_struct *next)
131{
132 struct rq *rq = task_rq(prev);
133
134
135
136
137
138
139 if (prev != rq->idle)
140 sched_info_depart(prev);
141
142 if (next != rq->idle)
143 sched_info_arrive(next);
144}
145static inline void
146sched_info_switch(struct task_struct *prev, struct task_struct *next)
147{
148 if (unlikely(sched_info_on()))
149 __sched_info_switch(prev, next);
150}
151#else
152#define sched_info_queued(t) do { } while (0)
153#define sched_info_reset_dequeued(t) do { } while (0)
154#define sched_info_dequeued(t) do { } while (0)
155#define sched_info_switch(t, next) do { } while (0)
156#endif
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168
169static inline bool cputimer_running(struct task_struct *tsk)
170
171{
172 struct thread_group_cputimer *cputimer = &tsk->signal->cputimer;
173
174 if (!cputimer->running)
175 return false;
176
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189
190
191 if (unlikely(!tsk->sighand))
192 return false;
193
194 return true;
195}
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206
207static inline void account_group_user_time(struct task_struct *tsk,
208 cputime_t cputime)
209{
210 struct thread_group_cputimer *cputimer = &tsk->signal->cputimer;
211
212 if (!cputimer_running(tsk))
213 return;
214
215 raw_spin_lock(&cputimer->lock);
216 cputimer->cputime.utime += cputime;
217 raw_spin_unlock(&cputimer->lock);
218}
219
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228
229
230static inline void account_group_system_time(struct task_struct *tsk,
231 cputime_t cputime)
232{
233 struct thread_group_cputimer *cputimer = &tsk->signal->cputimer;
234
235 if (!cputimer_running(tsk))
236 return;
237
238 raw_spin_lock(&cputimer->lock);
239 cputimer->cputime.stime += cputime;
240 raw_spin_unlock(&cputimer->lock);
241}
242
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252
253static inline void account_group_exec_runtime(struct task_struct *tsk,
254 unsigned long long ns)
255{
256 struct thread_group_cputimer *cputimer = &tsk->signal->cputimer;
257
258 if (!cputimer_running(tsk))
259 return;
260
261 raw_spin_lock(&cputimer->lock);
262 cputimer->cputime.sum_exec_runtime += ns;
263 raw_spin_unlock(&cputimer->lock);
264}
265