Date: Mon, 4 Mar 2013 16:16:23 +0000 (UTC) From: Davide Italiano <davide@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r247799 - head/sys/dev/random Message-ID: <201303041616.r24GGNNs016795@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: davide Date: Mon Mar 4 16:16:23 2013 New Revision: 247799 URL: http://svnweb.freebsd.org/changeset/base/247799 Log: 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 Modified: head/sys/dev/random/randomdev_soft.c Modified: head/sys/dev/random/randomdev_soft.c ============================================================================== --- head/sys/dev/random/randomdev_soft.c Mon Mar 4 16:07:55 2013 (r247798) +++ head/sys/dev/random/randomdev_soft.c Mon Mar 4 16:16:23 2013 (r247799) @@ -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 */
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201303041616.r24GGNNs016795>