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Commit f29d3b23 authored by Arjan van de Ven's avatar Arjan van de Ven
Browse files

fastboot: Make libata initialization even more async 



As suggested by Linus: Don't do the libata init in 2 separate
steps with a global sync inbetween, but do it as one async step,
with a local sync before registering the device.

This cuts the boottime on my machine with 2 sata controllers down
significantly, and it seems to work. Would be nice if the libata
folks take a good look at this patch though..

Signed-off-by: default avatarArjan van de Ven <arjan@linux.intel.com>
parent 79318057

drivers/ata/libata-core.c

+7 −9
Original line number Diff line number Diff line
@@ -5951,6 +5951,12 @@ static void async_port_probe(void *data, async_cookie_t cookie) 
			 */

		}

	}



	/* in order to keep device order, we need to synchronize at this point */

	async_synchronize_cookie(cookie);



	ata_scsi_scan_host(ap, 1);



}

/**

 *	ata_host_register - register initialized ATA host
@@ -6033,15 +6039,7 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht) 
		struct ata_port *ap = host->ports[i];

		async_schedule(async_port_probe, ap);

	}

	async_synchronize_full();

	/* probes are done, now scan each port's disk(s) */

	DPRINTK("host probe begin\n");

	for (i = 0; i < host->n_ports; i++) {

		struct ata_port *ap = host->ports[i];



		ata_scsi_scan_host(ap, 1);

	}

	DPRINTK("host probe end\n");

	DPRINTK("probe end\n");



	return 0;

}