From: mpi <mpi@openbsd.org>
Date: Wed, 9 Nov 2022 10:26:28 +0000 (+0000)
Subject: Mark sched_yield(2) as NOLOCK.
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=ec17aacb4ae98dcadf191aa9e43c9e3c0aa2a05a;p=openbsd

Mark sched_yield(2) as NOLOCK.

All the fields accessed in this syscall are protected by the SCHED_LOCK()
so it isn't necessary to wait for another CPU to release the KERNEL_LOCK()
before that.

ok claudio@
---

diff --git a/sys/kern/syscalls.master b/sys/kern/syscalls.master
index 59f4a97c08d..56baf29dc8c 100644
--- a/sys/kern/syscalls.master
+++ b/sys/kern/syscalls.master
@@ -1,4 +1,4 @@
-;	$OpenBSD: syscalls.master,v 1.235 2022/11/08 11:05:57 mpi Exp $
+;	$OpenBSD: syscalls.master,v 1.236 2022/11/09 10:26:28 mpi Exp $
 ;	$NetBSD: syscalls.master,v 1.32 1996/04/23 10:24:21 mycroft Exp $
 
 ;	@(#)syscalls.master	8.2 (Berkeley) 1/13/94
@@ -531,7 +531,7 @@
 #else
 297	UNIMPL
 #endif
-298	STD		{ int sys_sched_yield(void); }
+298	STD NOLOCK	{ int sys_sched_yield(void); }
 299	STD NOLOCK	{ pid_t sys_getthrid(void); }
 300	OBSOL		t32___thrsleep
 301	STD NOLOCK	{ int sys___thrwakeup(const volatile void *ident, \