platforms/pseries/vio.c

85  * @desired: desired memory for system operation
98 	size_t desired;
185  * pool is used to increase the reserve pool toward the desired entitlement
245 	 * Increase the reserve pool until the desired allocation is met.
249 	if (excess_freed && (vio_cmo.desired > vio_cmo.reserve.size)) {
250 		tmp = min(excess_freed, (vio_cmo.desired - vio_cmo.reserve.size));
372  * The list of devices is iterated through to recalculate the desired
404 	cmo->desired = cmo->min;
415 		cmo->desired += (viodev->cmo.desired - VIO_CMO_MIN_ENT);
430 			if (viodev->cmo.desired <= level) {
438 			 * desired level of entitlement for the device.
441 			chunk = min(chunk, (viodev->cmo.desired -
619  * vio_cmo_set_dev_desired - Set desired entitlement for a device
622  * @desired: new desired entitlement level in bytes
625  * through sysfs.  The desired entitlement level is changed and a balancing
628 void vio_cmo_set_dev_desired(struct vio_dev *viodev, size_t desired)
638 	if (desired < VIO_CMO_MIN_ENT)
639 		desired = VIO_CMO_MIN_ENT;
656 	/* Increase/decrease in desired device entitlement */
657 	if (desired >= viodev->cmo.desired) {
659 		vio_cmo.desired += desired - viodev->cmo.desired;
660 		viodev->cmo.desired = desired;
662 		/* Decrease bus and device values for desired entitlement */
663 		vio_cmo.desired -= viodev->cmo.desired - desired;
664 		viodev->cmo.desired = desired;
666 		 * If less entitlement is desired than current entitlement, move
669 		if (viodev->cmo.entitled > desired) {
670 			vio_cmo.reserve.size -= viodev->cmo.entitled - desired;
671 			vio_cmo.excess.size += viodev->cmo.entitled - desired;
679 				                       max(viodev->cmo.allocated, desired);
680 			viodev->cmo.entitled = desired;
731 		/* Check that the driver is CMO enabled and get desired DMA */
738 		viodev->cmo.desired =
740 		if (viodev->cmo.desired < VIO_CMO_MIN_ENT)
741 			viodev->cmo.desired = VIO_CMO_MIN_ENT;
753 		viodev->cmo.desired = 0;
766 		/* Updated desired entitlement if device requires it */
768 			vio_cmo.desired += (viodev->cmo.desired -
794 		vio_cmo.desired += viodev->cmo.desired;
844 		 * vio_cmo.desired
846 		vio_cmo.desired -= (viodev->cmo.desired - VIO_CMO_MIN_ENT);
874 		viodev->cmo.desired = VIO_CMO_MIN_ENT;
933 	vio_cmo.desired = vio_cmo.reserve.size;
976 viodev_cmo_rd_attr(desired);
1015 viobus_cmo_rd_attr(desired);
1056 void vio_cmo_set_dev_desired(struct vio_dev *viodev, size_t desired) {}