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- Add a pinned count to the thread so that cpu pinning may nest. This is

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not in scheduler specific data because eventually it will be required by
   all schedulers.
 - Implement sched_pin and unpin as an inline for now.  If a scheduler needs
   to do something more complicated than adjusting the pinned count we can
   move this into a function later in an api compatible way.
This commit is contained in:
Jeff Roberson 2003-11-06 03:09:05 +00:00
parent 6350f49c4a
commit 45852ae1a4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=122157
2 changed files with 15 additions and 2 deletions
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1
sys/sys/proc.h
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@ -284,6 +284,7 @@ struct thread {
LIST_HEAD(, mtx) td_contested; /* (j) Contested locks. */
struct lock_list_entry *td_sleeplocks; /* (k) Held sleep locks. */
int td_intr_nesting_level; /* (k) Interrupt recursion. */
int td_pinned; /* (k) Temporary cpu pin count. */
struct kse_thr_mailbox *td_mailbox; /* (*) Userland mailbox address */
struct ucred *td_ucred; /* (k) Reference to credentials. */
struct thread *td_standin; /* (*) Use this for an upcall */

16
sys/sys/sched.h
View File

@ -76,9 +76,9 @@ void sched_rem(struct thread *td);
* hold a thread on a particular CPU.
*/
void sched_bind(struct thread *td, int cpu);
void sched_pin(struct thread *td);
static __inline void sched_pin(struct thread *td);
void sched_unbind(struct thread *td);
void sched_unpin(struct thread *td);
static __inline void sched_unpin(struct thread *td);
/*
* These interfaces will eventually be removed.
@ -100,4 +100,16 @@ extern struct kg_sched *ksegrp0_sched;
extern struct p_sched *proc0_sched;
extern struct td_sched *thread0_sched;
static __inline void
sched_pin(struct thread *td)
{
td->td_pinned++;
}
static __inline void
sched_unpin(struct thread *td)
{
td->td_pinned--;
}
#endif /* !_SYS_SCHED_H_ */