From ec908bd2cb80a68ab841d35e5fa8648751c40908 Mon Sep 17 00:00:00 2001
From: "Balazs Gerofi bgerofi@riken.jp" <bgerofi@kncc-login1.(none)>
Date: Sun, 2 Jun 2013 16:49:23 +0900
Subject: [PATCH] add dummy sched_yield() implementation to avoid shipping it
 through the generic syscall forwarding code (slowed down OpenMP)

---
 kernel/syscall.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/kernel/syscall.c b/kernel/syscall.c
index 1b10b922..341abc50 100644
--- a/kernel/syscall.c
+++ b/kernel/syscall.c
@@ -1051,6 +1051,11 @@ SYSCALL_DECLARE(sched_getaffinity)
 	return min_len;
 }
 
+SYSCALL_DECLARE(sched_yield)
+{
+	return -ENOSYS;
+}
+
 SYSCALL_DECLARE(noop)
 {
 	kprintf("noop() \n");
@@ -1170,6 +1175,7 @@ static long (*syscall_table[])(int, ihk_mc_user_context_t *) = {
 	[18] = sys_pwrite,
 	[20] = sys_writev,
 	[21] = sys_access,
+	[24] = sys_sched_yield,
 	[28] = sys_madvise,
 	[39] = sys_getpid,
 	[56] = sys_clone,
@@ -1225,7 +1231,7 @@ static char *syscall_name[] = {
 	[17] = "sys_pread",
 	[18] = "sys_pwrite",
 	[20] = "sys_writev",
-	//	[24] = "sys_sched_yield",
+	[24] = "sys_sched_yield",
 	[21] = "sys_access",
 	[28] = "sys_madvise",
 	[39] = "sys_getpid",