From: Dan Williams <dan.j.williams@intel.com>
To: linux-scsi@vger.kernel.org
Cc: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Subject: [isci-rnc PATCH v1 23/37] isci: Manage tag releases differently when aborting tasks.
Date: Thu, 22 Mar 2012 17:29:52 -0700 [thread overview]
Message-ID: <20120323002952.18065.48616.stgit@dwillia2-linux.jf.intel.com> (raw)
In-Reply-To: <20120323002504.18065.45709.stgit@dwillia2-linux.jf.intel.com>
From: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
When an individual request is being terminated, the request's tag
is managed in the terminate function.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
drivers/scsi/isci/host.c | 3 ++-
drivers/scsi/isci/remote_device.c | 11 +++++++----
drivers/scsi/isci/request.h | 1 +
drivers/scsi/isci/task.c | 3 ++-
4 files changed, 12 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c
index cd01e39..7061c98 100644
--- a/drivers/scsi/isci/host.c
+++ b/drivers/scsi/isci/host.c
@@ -1130,7 +1130,8 @@ void isci_host_completion_routine(unsigned long data)
if (test_and_clear_bit(IREQ_ABORT_PATH_ACTIVE, &request->flags))
wake_up_all(&ihost->eventq);
- isci_free_tag(ihost, request->io_tag);
+ if (!test_bit(IREQ_NO_AUTO_FREE_TAG, &request->flags))
+ isci_free_tag(ihost, request->io_tag);
}
spin_unlock_irq(&ihost->scic_lock);
diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c
index 21a9800..adeda64 100644
--- a/drivers/scsi/isci/remote_device.c
+++ b/drivers/scsi/isci/remote_device.c
@@ -104,15 +104,15 @@ static enum sci_status sci_remote_device_terminate_req(
int check_abort,
struct isci_request *ireq)
{
- dev_dbg(&ihost->pdev->dev,
- "%s: idev=%p; flags=%lx; req=%p; req target=%p\n",
- __func__, idev, idev->flags, ireq, ireq->target_device);
-
if (!test_bit(IREQ_ACTIVE, &ireq->flags) ||
(ireq->target_device != idev) ||
(check_abort && !test_bit(IREQ_PENDING_ABORT, &ireq->flags)))
return SCI_SUCCESS;
+ dev_dbg(&ihost->pdev->dev,
+ "%s: idev=%p; flags=%lx; req=%p; req target=%p\n",
+ __func__, idev, idev->flags, ireq, ireq->target_device);
+
set_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags);
return sci_controller_terminate_request(ihost, idev, ireq);
@@ -209,11 +209,14 @@ enum sci_status isci_remote_device_terminate_requests(
rnc_suspend_count, idev->rnc.suspend_count);
if (ireq) {
/* Terminate a specific TC. */
+ set_bit(IREQ_NO_AUTO_FREE_TAG, &ireq->flags);
sci_remote_device_terminate_req(ihost, idev, 0, ireq);
spin_unlock_irqrestore(&ihost->scic_lock, flags);
wait_event(ihost->eventq,
isci_check_reqterm(ihost, idev, ireq,
rnc_suspend_count));
+ clear_bit(IREQ_NO_AUTO_FREE_TAG, &ireq->flags);
+ isci_free_tag(ihost, ireq->io_tag);
} else {
/* Terminate all TCs. */
sci_remote_device_terminate_requests(idev);
diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h
index d12e975..1a65157 100644
--- a/drivers/scsi/isci/request.h
+++ b/drivers/scsi/isci/request.h
@@ -87,6 +87,7 @@ struct isci_request {
#define IREQ_PENDING_ABORT 4 /* Set == device was not suspended yet */
#define IREQ_TC_ABORT_POSTED 5
#define IREQ_ABORT_PATH_ACTIVE 6
+ #define IREQ_NO_AUTO_FREE_TAG 7 /* Set when being explicitly managed */
unsigned long flags;
/* XXX kill ttype and ttype_ptr, allocate full sas_task */
union ttype_ptr_union {
diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c
index c1c6dd0..e798c6a 100644
--- a/drivers/scsi/isci/task.c
+++ b/drivers/scsi/isci/task.c
@@ -719,7 +719,8 @@ isci_task_request_complete(struct isci_host *ihost,
*/
set_bit(IREQ_TERMINATED, &ireq->flags);
- isci_free_tag(ihost, ireq->io_tag);
+ if (!test_bit(IREQ_NO_AUTO_FREE_TAG, &ireq->flags))
+ isci_free_tag(ihost, ireq->io_tag);
/* The task management part completes last. */
if (tmf_complete)
next prev parent reply other threads:[~2012-03-23 0:14 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-23 0:27 [isci-rnc PATCH v1 00/37] remote node context rework Dan Williams
2012-03-23 0:27 ` [isci-rnc PATCH v1 01/37] isci: Manage the link layer hang detect timer for RNC suspensions Dan Williams
2012-03-23 0:27 ` [isci-rnc PATCH v1 02/37] isci: Fixed bug in resumption from RNC Tx/Rx suspend state Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 03/37] isci: Handle all suspending TC completions Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 04/37] isci: Terminate outstanding TCs on TX/RX RNC suspensions Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 05/37] isci: Manage device suspensions during TC terminations Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 06/37] isci: Remote device must be suspended for NCQ cleanup Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 07/37] isci: Remote device stop also suspends the RNC and terminates I/O Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 08/37] isci: Escalate to I_T_Nexus_Reset when the device is gone Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 09/37] isci: Redesign device suspension, abort, cleanup Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 10/37] isci: Add suspension cases for RNC INVALIDATING, POSTING states Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 11/37] isci: Device access in the error path does not depend on IDEV_GONE Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 12/37] isci: All pending TCs are terminated when the RNC is invalidated Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 13/37] isci: Only set IDEV_GONE in the device stop path Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 14/37] isci: Remove isci_device reqs_in_process and dev_node from isci_device Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 15/37] isci: Distinguish between remote device suspension cases Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 16/37] isci: Fix the terminated I/O to not call sas_task_abort() Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 17/37] isci: Save the suspension hint for upcoming suspensions Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 18/37] isci: Manage the LLHANG timer enable/disable per-device Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 19/37] isci: Make sure all TCs are terminated and cleaned in LUN reset Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 20/37] isci: Implement waiting for suspend in the abort path Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 21/37] isci: When in the abort path, defeat other resume calls until done Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 22/37] isci: Callbacks to libsas occur under scic_lock and are synchronized Dan Williams
2012-03-23 0:29 ` Dan Williams [this message]
2012-03-23 0:29 ` [isci-rnc PATCH v1 24/37] isci: Fix RNC suspend call for SCI_RESUMING state Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 25/37] isci: Wait for RNC resumption before leaving the abort path Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 26/37] isci: Directly control IREQ_ABORT_PATH_ACTIVE when completing TMFs Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 27/37] isci: Add protocol indicator for TMF requests Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 28/37] isci: Added timeouts to RNC suspensions in the abort path Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 29/37] isci: Change the phy control and link reset interface for HW reasons Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 30/37] isci: Don't wait for an RNC suspend if it's being destroyed Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 31/37] isci: Restore the ATAPI device RNC management code Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 32/37] isci: Check IDEV_GONE before performing abort path operations Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 33/37] isci: Remove obviated host callback list Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 34/37] isci: Manage the IREQ_NO_AUTO_FREE_TAG under scic_lock Dan Williams
2012-03-23 0:31 ` [isci-rnc PATCH v1 35/37] isci: Fix RNC AWAIT_SUSPENSION->INVALIDATING transition Dan Williams
2012-03-23 0:31 ` [isci-rnc PATCH v1 36/37] isci: Fixed RNC bug that lost the suspension or resumption during destroy Dan Williams
2012-03-23 0:31 ` [isci-rnc PATCH v1 37/37] isci: End the RNC resumption wait when the RNC is destroyed Dan Williams
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