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authorArjan van de Ven <arjan@linux.intel.com>2009-01-05 15:07:07 -0800
committerArjan van de Ven <arjan@linux.intel.com>2009-01-07 08:47:11 -0800
commitf29d3b23238e1955a8094e038c72546e99308e61 (patch)
tree19c0f68b953f64f4e5a758de8f4d3e141a05de0b /drivers/ata/libata-core.c
parent793180570ff2530d133343ceea85648de5f01b02 (diff)
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>
Diffstat (limited to 'drivers/ata/libata-core.c')
-rw-r--r--drivers/ata/libata-core.c16
1 files changed, 7 insertions, 9 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 7d3ae6a6fce..f178a450ec0 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -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;
}