Author: rpaulo
Date: Sat Sep 11 12:58:31 2010
New Revision: 212465
URL: http://svn.freebsd.org/changeset/base/212465
Log:
Avoid a LOR (sleepable after non-sleepable) in
fasttrap_tracepoint_enable().
Sponsored by: The FreeBSD Foundation
Modified:
head/sys/cddl/contrib/opensolaris/uts/common/dtrace/fasttrap.c
Modified: head/sys/cddl/contrib/opensolaris/uts/common/dtrace/fasttrap.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/dtrace/fasttrap.c Sat Sep
11 12:51:01 2010 (r212464)
+++ head/sys/cddl/contrib/opensolaris/uts/common/dtrace/fasttrap.c Sat Sep
11 12:58:31 2010 (r212465)
@@ -591,7 +591,9 @@ fasttrap_tracepoint_enable(proc_t *p, fa
* Before we make any modifications, make sure we've imposed a barrier
* on the generation in which this probe was last modified.
*/
+ PROC_UNLOCK(p);
fasttrap_mod_barrier(probe->ftp_gen);
+ PROC_LOCK(p);
bucket = &fasttrap_tpoints.fth_table[FASTTRAP_TPOINTS_INDEX(pid, pc)];
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