From fac1ecb479c5e4e379c8a41c3ac71ea893e7ecdc Mon Sep 17 00:00:00 2001
From: Jerry Jelinek <jerry.jelinek@joyent.com>
Date: Fri, 10 Apr 2020 11:41:35 +0000
Subject: 11909 THREAD_KPRI_RELEASE does nothing of the sort [fix lx-related
 mismerge]

---
 usr/src/uts/common/os/pid.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'usr/src/uts/common/os/pid.c')

diff --git a/usr/src/uts/common/os/pid.c b/usr/src/uts/common/os/pid.c
index 39c4eebf75..d48be19c71 100644
--- a/usr/src/uts/common/os/pid.c
+++ b/usr/src/uts/common/os/pid.c
@@ -533,6 +533,19 @@ sprunlock(proc_t *p)
 	mutex_exit(&p->p_lock);
 }
 
+/*
+ * Undo effects of sprlock but without dropping p->p_lock
+ */
+void
+sprunprlock(proc_t *p)
+{
+	ASSERT(p->p_proc_flag & P_PR_LOCK);
+	ASSERT(MUTEX_HELD(&p->p_lock));
+
+	cv_signal(&pr_pid_cv[p->p_slot]);
+	p->p_proc_flag &= ~P_PR_LOCK;
+}
+
 void
 pid_init(void)
 {
-- 
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