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MFcalloutng (r236314 by mav):

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Specify that wakeup rate of 7.5-10Hz is enough for yarrow harvesting
thread.

Sponsored by:	Google Summer of Code 2012, iXsystems inc.
Tested by:	flo, marius, ian, markj, Fabian Keil
This commit is contained in:
davide 2013-03-04 16:16:23 +00:00
parent 40e58fe548
commit 9157a1f8c6
1 changed files with 4 additions and 3 deletions
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7
sys/dev/random/randomdev_soft.c
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@ -242,10 +242,10 @@ random_kthread(void *arg __unused)
local_count = 0;
/* Process until told to stop */
mtx_lock_spin(&harvest_mtx);
for (; random_kthread_control >= 0;) {
/* Cycle through all the entropy sources */
mtx_lock_spin(&harvest_mtx);
for (source = RANDOM_START; source < ENTROPYSOURCE; source++) {
/*
* Drain entropy source records into a thread-local
@ -270,7 +270,6 @@ random_kthread(void *arg __unused)
emptyfifo.count += local_count;
local_count = 0;
}
mtx_unlock_spin(&harvest_mtx);
KASSERT(local_count == 0, ("random_kthread: local_count %d",
local_count));
@ -283,9 +282,11 @@ random_kthread(void *arg __unused)
random_kthread_control = 0;
/* Work done, so don't belabour the issue */
pause("-", hz / 10);
msleep_spin_sbt(&random_kthread_control, &harvest_mtx,
"-", SBT_1S / 10, 0, C_PREL(1));
}
mtx_unlock_spin(&harvest_mtx);
random_set_wakeup_exit(&random_kthread_control);
/* NOTREACHED */