Author: gnn Date: Tue Apr 14 14:22:34 2015 New Revision: 281528 URL: https://svnweb.freebsd.org/changeset/base/281528
Log: When a kernel has DEVICE_POLLING turned on but no drivers have the capability do not try to take the mutex at all. Replaces misbegotten attempt from reverted commit 281276 Pointed out by: glebius Sponsored by: Rubicon Communications (Netgate) Differential Revision: https://reviews.freebsd.org/D2262 Modified: head/sys/kern/kern_poll.c Modified: head/sys/kern/kern_poll.c ============================================================================== --- head/sys/kern/kern_poll.c Tue Apr 14 14:15:14 2015 (r281527) +++ head/sys/kern/kern_poll.c Tue Apr 14 14:22:34 2015 (r281528) @@ -367,6 +367,9 @@ netisr_pollmore() struct timeval t; int kern_load; + if (poll_handlers == 0) + return; + mtx_lock(&poll_mtx); if (!netisr_pollmore_scheduled) { mtx_unlock(&poll_mtx); @@ -424,6 +427,9 @@ netisr_poll(void) int i, cycles; enum poll_cmd arg = POLL_ONLY; + if (poll_handlers == 0) + return; + mtx_lock(&poll_mtx); if (!netisr_poll_scheduled) { mtx_unlock(&poll_mtx); _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
