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Fix a bug when accumulating run time, if a thread calls yield() syscall,

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its run time may be lost.
This commit is contained in:
David Xu 2006-06-29 12:29:20 +00:00
parent 333ad3bc40
commit 5151eeb194
1 changed files with 5 additions and 5 deletions
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10
sys/kern/sched_core.c
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@ -957,6 +957,7 @@ sched_switch(struct thread *td, struct thread *newtd, int flags)
mtx_assert(&sched_lock, MA_OWNED);
now = sched_timestamp();
ke = td->td_kse;
kg = td->td_ksegrp;
ksq = KSEQ_SELF();
@ -969,6 +970,7 @@ sched_switch(struct thread *td, struct thread *newtd, int flags)
if (td == PCPU_GET(idlethread)) {
TD_SET_CAN_RUN(td);
} else {
sched_update_runtime(ke, now);
/* We are ending our run so make our slot available again */
SLOT_RELEASE(td->td_ksegrp);
kseq_load_rem(ksq, ke);
@ -999,16 +1001,14 @@ sched_switch(struct thread *td, struct thread *newtd, int flags)
*/
SLOT_USE(newtd->td_ksegrp);
newtd->td_kse->ke_flags |= KEF_DIDRUN;
newtd->td_kse->ke_timestamp = now;
TD_SET_RUNNING(newtd);
kseq_load_add(ksq, newtd->td_kse);
now = newtd->td_kse->ke_timestamp = sched_timestamp();
} else {
newtd = choosethread();
/* sched_choose sets ke_timestamp, just reuse it */
now = newtd->td_kse->ke_timestamp;
}
if (td != newtd) {
sched_update_runtime(ke, now);
ke->ke_lastran = tick;
#ifdef HWPMC_HOOKS
@ -1074,9 +1074,9 @@ sched_wakeup(struct thread *td)
if (ke->ke_flags & KEF_SLEEP) {
ke->ke_flags &= ~KEF_SLEEP;
if (sched_is_timeshare(kg)) {
kseq = KSEQ_CPU(td->td_lastcpu);
now = sched_timestamp();
sched_commit_runtime(ke);
now = sched_timestamp();
kseq = KSEQ_CPU(td->td_lastcpu);
#ifdef SMP
if (kseq != mykseq)
now = now - mykseq->ksq_last_timestamp +