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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: Arjan van de Ven <arjan@linux.intel.com>
This commit is contained in:
Arjan van de Ven 2009-01-05 15:07:07 -08:00
parent 793180570f
commit f29d3b2323
1 changed files with 7 additions and 9 deletions
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16
drivers/ata/libata-core.c
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@ -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;
}