Messages in this thread Patch in this message | | | Date | Thu, 01 May 2003 22:25:31 -0600 | From | "Justin T. Gibbs" <> | Subject | Re: Aic7xxx and Aic79xx Driver Updates |
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> On Thu, May 01, 2003 at 04:28:12PM -0600, Justin T. Gibbs wrote: >> Folks, >> >> I've just uploaded version 1.3.8 of the aic79xx driver and version >> 6.2.33 of the aic7xxx driver. Both are available for 2.4.X and >> 2.5.X kernels in either bk send format or as a tarball from here: >> >> http://people.FreeBSD.org/~gibbs/linux/SRC/ > > Hi Justin, > > I've just tested it and I still have the deadlock on SMP. I also tried with > noapic, but it didn't change. I have reduced the TCQ from 253 to 32, and I > had the impression that it was more difficult to trigger, although I cannot > be certain. With 32, I could boot and go to about half the 'make -j 8 dep', > while it hanged during init script with 253. I may retest by the week-end, but > now I'm going to sleep. Now I'm back to 6.2.28 and everything's OK.
Can you try with this patch? It seems I forgot to pull part of a change from the aic79xx driver into the aic7xxx driver. This could easily cause a lock order reversal. <sigh>
==== //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.c#159 - /home/gibbs/bk/linux-2.4/drivers/scsi/aic7xxx/aic79xx_osm.c ==== --- /tmp/tmp.29873.0 2003-05-01 22:21:54.000000000 -0600 +++ /home/gibbs/bk/linux-2.4/drivers/scsi/aic7xxx/aic79xx_osm.c 2003-05-01 22:04:07.000000000 -0600 @@ -670,7 +670,6 @@ TAILQ_REMOVE(&ahd->platform_data->completeq, acmd, acmd_links.tqe); cmd = &acmd_scsi_cmd(acmd); - acmd = TAILQ_NEXT(acmd, acmd_links.tqe); cmd->host_scribble = NULL; if (ahd_cmd_get_transaction_status(cmd) != DID_OK || (cmd->result & 0xFF) != SCSI_STATUS_OK) @@ -1756,9 +1755,11 @@ TAILQ_REMOVE(&ahd->platform_data->device_runq, dev, links); dev->flags &= ~AHD_DEV_ON_RUN_LIST; ahd_linux_check_device_queue(ahd, dev); +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /* Yeild to our interrupt handler */ ahd_unlock(ahd, &flags); ahd_lock(ahd, &flags); +#endif } #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) ahd_unlock(ahd, &flags); ==== //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7xxx_osm.c#220 - /home/gibbs/bk/linux-2.4/drivers/scsi/aic7xxx/aic7xxx_osm.c ==== --- /tmp/tmp.29873.1 2003-05-01 22:21:54.000000000 -0600 +++ /home/gibbs/bk/linux-2.4/drivers/scsi/aic7xxx/aic7xxx_osm.c 2003-05-01 22:19:46.000000000 -0600 @@ -664,7 +664,6 @@ TAILQ_REMOVE(&ahc->platform_data->completeq, acmd, acmd_links.tqe); cmd = &acmd_scsi_cmd(acmd); - acmd = TAILQ_NEXT(acmd, acmd_links.tqe); cmd->host_scribble = NULL; if (ahc_cmd_get_transaction_status(cmd) != DID_OK || (cmd->result & 0xFF) != SCSI_STATUS_OK) @@ -1385,9 +1384,11 @@ TAILQ_REMOVE(&ahc->platform_data->device_runq, dev, links); dev->flags &= ~AHC_DEV_ON_RUN_LIST; ahc_linux_check_device_queue(ahc, dev); +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /* Yeild to our interrupt handler */ ahc_unlock(ahc, &flags); ahc_lock(ahc, &flags); +#endif } #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) ahc_unlock(ahc, &flags); ==== //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7xxx_osm.h#140 - /home/gibbs/bk/linux-2.4/drivers/scsi/aic7xxx/aic7xxx_osm.h ==== --- /tmp/tmp.29873.2 2003-05-01 22:21:54.000000000 -0600 +++ /home/gibbs/bk/linux-2.4/drivers/scsi/aic7xxx/aic7xxx_osm.h 2003-05-01 22:21:10.000000000 -0600 @@ -737,7 +737,8 @@ * trade the io_request_lock for our per-softc lock. */ #if AHC_SCSI_HAS_HOST_LOCK == 0 - ahc_lock(ahc, flags); + spin_unlock(&io_request_lock); + spin_lock(&ahc->platform_data->spin_lock); #endif } @@ -745,7 +746,8 @@ ahc_midlayer_entrypoint_unlock(struct ahc_softc *ahc, unsigned long *flags) { #if AHC_SCSI_HAS_HOST_LOCK == 0 - ahc_unlock(ahc, flags); + spin_unlock(&ahd->platform_data->spin_lock); + spin_lock(&io_request_lock); #endif } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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