diff options
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 61 |
1 files changed, 36 insertions, 25 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 3e7f1890e55d..4dcc61cca00a 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h | |||
| @@ -525,31 +525,6 @@ struct signal_struct { | |||
| 525 | #define SIGNAL_STOP_CONTINUED 0x00000004 /* SIGCONT since WCONTINUED reap */ | 525 | #define SIGNAL_STOP_CONTINUED 0x00000004 /* SIGCONT since WCONTINUED reap */ |
| 526 | #define SIGNAL_GROUP_EXIT 0x00000008 /* group exit in progress */ | 526 | #define SIGNAL_GROUP_EXIT 0x00000008 /* group exit in progress */ |
| 527 | 527 | ||
| 528 | |||
| 529 | /* | ||
| 530 | * Priority of a process goes from 0..MAX_PRIO-1, valid RT | ||
| 531 | * priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL/SCHED_BATCH | ||
| 532 | * tasks are in the range MAX_RT_PRIO..MAX_PRIO-1. Priority | ||
| 533 | * values are inverted: lower p->prio value means higher priority. | ||
| 534 | * | ||
| 535 | * The MAX_USER_RT_PRIO value allows the actual maximum | ||
| 536 | * RT priority to be separate from the value exported to | ||
| 537 | * user-space. This allows kernel threads to set their | ||
| 538 | * priority to a value higher than any user task. Note: | ||
| 539 | * MAX_RT_PRIO must not be smaller than MAX_USER_RT_PRIO. | ||
| 540 | */ | ||
| 541 | |||
| 542 | #define MAX_USER_RT_PRIO 100 | ||
| 543 | #define MAX_RT_PRIO MAX_USER_RT_PRIO | ||
| 544 | |||
| 545 | #define MAX_PRIO (MAX_RT_PRIO + 40) | ||
| 546 | |||
| 547 | #define rt_prio(prio) unlikely((prio) < MAX_RT_PRIO) | ||
| 548 | #define rt_task(p) rt_prio((p)->prio) | ||
| 549 | #define batch_task(p) (unlikely((p)->policy == SCHED_BATCH)) | ||
| 550 | #define is_rt_policy(p) ((p) != SCHED_NORMAL && (p) != SCHED_BATCH) | ||
| 551 | #define has_rt_policy(p) unlikely(is_rt_policy((p)->policy)) | ||
| 552 | |||
| 553 | /* | 528 | /* |
| 554 | * Some day this will be a full-fledged user tracking system.. | 529 | * Some day this will be a full-fledged user tracking system.. |
| 555 | */ | 530 | */ |
| @@ -1164,6 +1139,42 @@ struct task_struct { | |||
| 1164 | #endif | 1139 | #endif |
| 1165 | }; | 1140 | }; |
| 1166 | 1141 | ||
| 1142 | /* | ||
| 1143 | * Priority of a process goes from 0..MAX_PRIO-1, valid RT | ||
| 1144 | * priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL/SCHED_BATCH | ||
| 1145 | * tasks are in the range MAX_RT_PRIO..MAX_PRIO-1. Priority | ||
| 1146 | * values are inverted: lower p->prio value means higher priority. | ||
| 1147 | * | ||
| 1148 | * The MAX_USER_RT_PRIO value allows the actual maximum | ||
| 1149 | * RT priority to be separate from the value exported to | ||
| 1150 | * user-space. This allows kernel threads to set their | ||
| 1151 | * priority to a value higher than any user task. Note: | ||
| 1152 | * MAX_RT_PRIO must not be smaller than MAX_USER_RT_PRIO. | ||
| 1153 | */ | ||
| 1154 | |||
| 1155 | #define MAX_USER_RT_PRIO 100 | ||
| 1156 | #define MAX_RT_PRIO MAX_USER_RT_PRIO | ||
| 1157 | |||
| 1158 | #define MAX_PRIO (MAX_RT_PRIO + 40) | ||
| 1159 | #define DEFAULT_PRIO (MAX_RT_PRIO + 20) | ||
| 1160 | |||
| 1161 | static inline int rt_prio(int prio) | ||
| 1162 | { | ||
| 1163 | if (unlikely(prio < MAX_RT_PRIO)) | ||
| 1164 | return 1; | ||
| 1165 | return 0; | ||
| 1166 | } | ||
| 1167 | |||
| 1168 | static inline int rt_task(struct task_struct *p) | ||
| 1169 | { | ||
| 1170 | return rt_prio(p->prio); | ||
| 1171 | } | ||
| 1172 | |||
| 1173 | static inline int batch_task(struct task_struct *p) | ||
| 1174 | { | ||
| 1175 | return p->policy == SCHED_BATCH; | ||
| 1176 | } | ||
| 1177 | |||
| 1167 | static inline pid_t process_group(struct task_struct *tsk) | 1178 | static inline pid_t process_group(struct task_struct *tsk) |
| 1168 | { | 1179 | { |
| 1169 | return tsk->signal->pgrp; | 1180 | return tsk->signal->pgrp; |
