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#ifndef	__KERNEL___PL_H__
#define	__KERNEL___PL_H__

/*
 * This internal header file is intended as the sole point of definition for
 * the internal data type "__pl_t" and associated enumeration constants, from
 * which the System V DDI/DKI data type "pl_t" is derived.
 *
 * If the definitions of the constants below are changed or augmented, please
 * ensure that the same changes are made elsewhere for the benefit of the
 * assembly-language code which uses similar constants.
 */


/*
 * Processor priorities under the System V DDI/DKI are specified abstractly
 * via the following types and names. The abstract priorities defined below
 * must conform to the following partial order:
 *	plbase < pltimeout <= pldisk, plstr <= plhi
 *
 * The actual numeric values are system-dependent. The primitive numeric
 * processor priorities from 0 (base) to 8 (totally disabled) to keep software
 * independent of the machine-specific priority-manipulation data.
 */

typedef enum {
	invpl = -1,			/* invalid processor priority */
	plbase = 0,			/* block no interrupts */
	pltimeout = 1,			/*
					 * block functions scheduled by
					 * itimeout and dtimeout
					 */
	pldisk = 5,			/* block disk device interrupts */
	plstr = 5,			/* block STREAMS interrupts */
	plhi = 8			/* block all interrupts */
} __pl_t;


#endif	/* ! defined (__KERNEL___PL_H__) */

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