svn commit: r325720 - head/sys/kern

[Mateusz Guzik]

Author: mjg
Date: Sat Nov 11 18:03:26 2017
New Revision: 325720
URL: https://svnweb.freebsd.org/changeset/base/325720

Log:
  Avoid allproc lock in pfind if curproc->pid == pid

Modified:
  head/sys/kern/kern_proc.c

Modified: head/sys/kern/kern_proc.c
==============================================================================
--- head/sys/kern/kern_proc.c	Sat Nov 11 18:02:23 2017	(r325719)
+++ head/sys/kern/kern_proc.c	Sat Nov 11 18:03:26 2017	(r325720)
@@ -342,6 +342,11 @@ pfind(pid_t pid)
 {
 	struct proc *p;
 
+	p = curproc;
+	if (p->p_pid == pid) {
+		PROC_LOCK(p);
+		return (p);
+	}
 	sx_slock(&allproc_lock);
 	p = pfind_locked(pid);
 	sx_sunlock(&allproc_lock);