diff options
Diffstat (limited to 'kernel/sched_stats.h')
-rw-r--r-- | kernel/sched_stats.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/kernel/sched_stats.h b/kernel/sched_stats.h index 8385d43987e2..b8c156979cf2 100644 --- a/kernel/sched_stats.h +++ b/kernel/sched_stats.h | |||
@@ -270,3 +270,89 @@ sched_info_switch(struct task_struct *prev, struct task_struct *next) | |||
270 | #define sched_info_switch(t, next) do { } while (0) | 270 | #define sched_info_switch(t, next) do { } while (0) |
271 | #endif /* CONFIG_SCHEDSTATS || CONFIG_TASK_DELAY_ACCT */ | 271 | #endif /* CONFIG_SCHEDSTATS || CONFIG_TASK_DELAY_ACCT */ |
272 | 272 | ||
273 | /* | ||
274 | * The following are functions that support scheduler-internal time accounting. | ||
275 | * These functions are generally called at the timer tick. None of this depends | ||
276 | * on CONFIG_SCHEDSTATS. | ||
277 | */ | ||
278 | |||
279 | /** | ||
280 | * account_group_user_time - Maintain utime for a thread group. | ||
281 | * | ||
282 | * @tsk: Pointer to task structure. | ||
283 | * @cputime: Time value by which to increment the utime field of the | ||
284 | * thread_group_cputime structure. | ||
285 | * | ||
286 | * If thread group time is being maintained, get the structure for the | ||
287 | * running CPU and update the utime field there. | ||
288 | */ | ||
289 | static inline void account_group_user_time(struct task_struct *tsk, | ||
290 | cputime_t cputime) | ||
291 | { | ||
292 | struct signal_struct *sig; | ||
293 | |||
294 | sig = tsk->signal; | ||
295 | if (unlikely(!sig)) | ||
296 | return; | ||
297 | if (sig->cputime.totals) { | ||
298 | struct task_cputime *times; | ||
299 | |||
300 | times = per_cpu_ptr(sig->cputime.totals, get_cpu()); | ||
301 | times->utime = cputime_add(times->utime, cputime); | ||
302 | put_cpu_no_resched(); | ||
303 | } | ||
304 | } | ||
305 | |||
306 | /** | ||
307 | * account_group_system_time - Maintain stime for a thread group. | ||
308 | * | ||
309 | * @tsk: Pointer to task structure. | ||
310 | * @cputime: Time value by which to increment the stime field of the | ||
311 | * thread_group_cputime structure. | ||
312 | * | ||
313 | * If thread group time is being maintained, get the structure for the | ||
314 | * running CPU and update the stime field there. | ||
315 | */ | ||
316 | static inline void account_group_system_time(struct task_struct *tsk, | ||
317 | cputime_t cputime) | ||
318 | { | ||
319 | struct signal_struct *sig; | ||
320 | |||
321 | sig = tsk->signal; | ||
322 | if (unlikely(!sig)) | ||
323 | return; | ||
324 | if (sig->cputime.totals) { | ||
325 | struct task_cputime *times; | ||
326 | |||
327 | times = per_cpu_ptr(sig->cputime.totals, get_cpu()); | ||
328 | times->stime = cputime_add(times->stime, cputime); | ||
329 | put_cpu_no_resched(); | ||
330 | } | ||
331 | } | ||
332 | |||
333 | /** | ||
334 | * account_group_exec_runtime - Maintain exec runtime for a thread group. | ||
335 | * | ||
336 | * @tsk: Pointer to task structure. | ||
337 | * @ns: Time value by which to increment the sum_exec_runtime field | ||
338 | * of the thread_group_cputime structure. | ||
339 | * | ||
340 | * If thread group time is being maintained, get the structure for the | ||
341 | * running CPU and update the sum_exec_runtime field there. | ||
342 | */ | ||
343 | static inline void account_group_exec_runtime(struct task_struct *tsk, | ||
344 | unsigned long long ns) | ||
345 | { | ||
346 | struct signal_struct *sig; | ||
347 | |||
348 | sig = tsk->signal; | ||
349 | if (unlikely(!sig)) | ||
350 | return; | ||
351 | if (sig->cputime.totals) { | ||
352 | struct task_cputime *times; | ||
353 | |||
354 | times = per_cpu_ptr(sig->cputime.totals, get_cpu()); | ||
355 | times->sum_exec_runtime += ns; | ||
356 | put_cpu_no_resched(); | ||
357 | } | ||
358 | } | ||