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| author | Davide Italiano <davide@FreeBSD.org> | 2013-03-04 16:16:23 +0000 |
|---|---|---|
| committer | Davide Italiano <davide@FreeBSD.org> | 2013-03-04 16:16:23 +0000 |
| commit | 36d0b731022d717e2386029a0368f0b0587d5da9 (patch) | |
| tree | 26e179c27c41e00bc86ca9863c2ab3fe21222d7f /sys/dev/random | |
| parent | c38250c9b9cbeeb57955a82cfc8f2a1f45375845 (diff) | |
| download | src-36d0b731022d717e2386029a0368f0b0587d5da9.tar.gz src-36d0b731022d717e2386029a0368f0b0587d5da9.zip | |
MFcalloutng (r236314 by mav):
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
Notes
Notes:
svn path=/head/; revision=247799
Diffstat (limited to 'sys/dev/random')
| -rw-r--r-- | sys/dev/random/randomdev_soft.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sys/dev/random/randomdev_soft.c b/sys/dev/random/randomdev_soft.c index 420a82a67930..004066ebf316 100644 --- a/sys/dev/random/randomdev_soft.c +++ b/sys/dev/random/randomdev_soft.c @@ -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 */ |