Attachment 203275 Details for Bug 368657

[patch] libata-irq-storm.patch

libata-irq-storm.patch (text/plain), 1.17 KB, created by Tejun Heo on 2008-03-21 00:38:29 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Tejun Heo

Created: 2008-03-21 00:38:29 UTC

Size: 1.17 KB

patch

obsolete

>---
> drivers/ata/libata-core.c |    7 +++++++
> 1 file changed, 7 insertions(+)
>
>Index: linux-2.6.16-SLES10_SP2_BRANCH/drivers/ata/libata-core.c
>===================================================================
>--- linux-2.6.16-SLES10_SP2_BRANCH.orig/drivers/ata/libata-core.c
>+++ linux-2.6.16-SLES10_SP2_BRANCH/drivers/ata/libata-core.c
>@@ -122,6 +122,9 @@ module_param_call(slumber_timeout, ata_p
> MODULE_PARM_DESC(slumber_timeout, "Host-initiated slumber powersave timeout "
> 		 "(milliseconds, default 3000, 0 to disable)");
> 
>+static int ata_irqstorm_workaround = 0;
>+module_param_named(irqstorm_workaround, ata_irqstorm_workaround, int, 0644);
>+
> int libata_ps_initialized;
> 
> MODULE_AUTHOR("Jeff Garzik");
>@@ -5504,6 +5507,8 @@ inline unsigned int ata_host_intr (struc
> 	return 1;	/* irq handled */
> 
> idle_irq:
>+	if (ata_irqstorm_workaround)
>+		ata_chk_status(ap);
> 	ap->stats.idle_irq++;
> 
> #ifdef ATA_IRQ_TRAP
>@@ -5553,6 +5558,8 @@ irqreturn_t ata_interrupt (int irq, void
> 			if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)) &&
> 			    (qc->flags & ATA_QCFLAG_ACTIVE))
> 				handled |= ata_host_intr(ap, qc);
>+			else if (ata_irqstorm_workaround)
>+				ata_chk_status(ap);
> 		}
> 	}
>

Actions: View | Diff

Attachments on bug 368657: 201021 | 202779 | 202830 | 202881 | 203275 | 203620 | 204038 | 205770 | 205991