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);
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