Differential D21165 Diff 60491 sys/geom/sched/g_sched.h

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sys/geom/sched/g_sched.h

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	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY			* 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			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.			* SUCH DAMAGE.
	*/			*/

	#ifndef _G_SCHED_H_			#ifndef _G_SCHED_H_
	#define _G_SCHED_H_			#define _G_SCHED_H_

				#ifdef _KERNEL
				#include <geom/geom_int.h>
				#endif

	/*			/*
	* $Id$			* $Id$
	* $FreeBSD$			* $FreeBSD$
	*			*
	* Header for the geom_sched class (userland library and kernel part).			* Header for the geom_sched class (userland library and kernel part).
	* See g_sched.c for documentation.			* See g_sched.c for documentation.
	* The userland code only needs the three G_SCHED_* values below.			* The userland code only needs the three G_SCHED_* values below.
	*/			*/

	#define G_SCHED_CLASS_NAME "SCHED"			#define G_SCHED_CLASS_NAME "SCHED"
	#define G_SCHED_VERSION 0			#define G_SCHED_VERSION 0
	#define G_SCHED_SUFFIX ".sched."			#define G_SCHED_SUFFIX ".sched."

	#ifdef _KERNEL			#ifdef _KERNEL
	#define G_SCHED_DEBUG(lvl, ...) do { \			#define G_SCHED_DEBUG(lvl, ...) \
	if (me.gs_debug >= (lvl)) { \			_GEOM_DEBUG("GEOM_SCHED", me.gs_debug, (lvl), NULL, __VA_ARGS__)
	printf("GEOM_SCHED"); \			#define G_SCHED_LOGREQ(bp, ...) \
	if (me.gs_debug > 0) \			_GEOM_DEBUG("GEOM_SCHED", me.gs_debug, 2, (bp), __VA_ARGS__)
	printf("[%u]", lvl); \
	printf(": "); \
	printf(__VA_ARGS__); \
	printf("\n"); \
	} \
	} while (0)

	#define G_SCHED_LOGREQ(bp, ...) do { \
	if (me.gs_debug >= 2) { \
	printf("GEOM_SCHED[2]: "); \
	printf(__VA_ARGS__); \
	printf(" "); \
	g_print_bio(bp); \
	printf("\n"); \
	} \
	} while (0)

	LIST_HEAD(g_hash, g_sched_class);			LIST_HEAD(g_hash, g_sched_class);

	/*			/*
	* Descriptor of a scheduler.			* Descriptor of a scheduler.
	* In addition to the obvious fields, sc_flushing and sc_pending			* In addition to the obvious fields, sc_flushing and sc_pending
	* support dynamic switching of scheduling algorithm.			* support dynamic switching of scheduling algorithm.
	* Normally, sc_flushing is 0, and requests that are scheduled are			* Normally, sc_flushing is 0, and requests that are scheduled are
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