MFC r258632,258704: MFV r255255: 4045 zfs write throttle & i/o scheduler

performance work

Sponsored by:	HybridCluster [merge]

1 files changed, 40 insertions, 0 deletions

diff --git a/sys/cddl/compat/opensolaris/sys/disp.h b/sys/cddl/compat/opensolaris/sys/disp.h
new file mode 100644
index 0000000..468ed67
--- /dev/null
+++ b/sys/cddl/compat/opensolaris/sys/disp.h
@@ -0,0 +1,40 @@
+/*-
+ * Copyright (c) 2013 Andriy Gapon
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _OPENSOLARIS_SYS_DISP_H_
+#define	_OPENSOLARIS_SYS_DISP_H_
+
+#ifdef _KERNEL
+
+#include <sys/proc.h>
+
+#define	kpreempt(x)	kern_yield(PRI_USER)
+
+#endif	/* _KERNEL */
+
+#endif	/* _OPENSOLARIS_SYS_DISP_H_ */