svn commit: r359437 - head/sys/dev/hwpmc

[Mark Johnston]

Author: markj
Date: Mon Mar 30 14:23:08 2020
New Revision: 359437
URL: https://svnweb.freebsd.org/changeset/base/359437

Log:
  Fix accounting of hwpmc's thread descriptor freelist.
  
  MFC after:	1 week
  Sponsored by:	The FreeBSD Foundation

Modified:
  head/sys/dev/hwpmc/hwpmc_mod.c

Modified: head/sys/dev/hwpmc/hwpmc_mod.c
==============================================================================
--- head/sys/dev/hwpmc/hwpmc_mod.c	Mon Mar 30 14:22:52 2020	(r359436)
+++ head/sys/dev/hwpmc/hwpmc_mod.c	Mon Mar 30 14:23:08 2020	(r359437)
@@ -2428,12 +2428,13 @@ pmc_thread_descriptor_pool_free_task(void *arg __unuse
 	int delta;
 
 	LIST_INIT(&tmplist);
+
 	/* Determine what changes, if any, we need to make. */
 	mtx_lock_spin(&pmc_threadfreelist_mtx);
 	delta = pmc_threadfreelist_entries - pmc_threadfreelist_max;
-	while (delta > 0 &&
-		   (pt = LIST_FIRST(&pmc_threadfreelist)) != NULL) {
+	while (delta > 0 && (pt = LIST_FIRST(&pmc_threadfreelist)) != NULL) {
 		delta--;
+		pmc_threadfreelist_entries--;
 		LIST_REMOVE(pt, pt_next);
 		LIST_INSERT_HEAD(&tmplist, pt, pt_next);
 	}