svn commit: r359659 - stable/12/sys/dev/hwpmc

[Mark Johnston]

Author: markj
Date: Mon Apr  6 14:58:24 2020
New Revision: 359659
URL: https://svnweb.freebsd.org/changeset/base/359659

Log:
  MFC r359437:
  Fix accounting of hwpmc's thread descriptor freelist.

Modified:
  stable/12/sys/dev/hwpmc/hwpmc_mod.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/dev/hwpmc/hwpmc_mod.c
==============================================================================
--- stable/12/sys/dev/hwpmc/hwpmc_mod.c	Mon Apr  6 14:56:19 2020	(r359658)
+++ stable/12/sys/dev/hwpmc/hwpmc_mod.c	Mon Apr  6 14:58:24 2020	(r359659)
@@ -2426,12 +2426,13 @@ 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);
 	}