This allows us to change the representation (to a dangling bitmap or cpumask_var_t) without breaking all the callers: they can use tsk_cpumask() now and won't see a difference as the changes roll into linux-next.
Unified · Split
| @@ -1419,6 +1419,9 @@ struct task_struct { · 1418 unmodified lines | ||
| 1419 | 1419 | #endif |
| 1420 | 1420 | }; |
| 1421 | 1421 | |
| 1422 | +/* Future-safe accessor for struct task_struct's cpus_allowed. */ | |
| 1423 | +#define tsk_cpumask(tsk) (&(tsk)->cpus_allowed) | |
| 1424 | + | |
| 1422 | 1425 | /* |
| 1423 | 1426 | * Priority of a process goes from 0..MAX_PRIO-1, valid RT |
| 1424 | 1427 | * priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL/SCHED_BATCH |