Il 22/05/2014 22:46, Nicholas A. Bellinger ha scritto:
Hi Fengguang,
On Thu, 2014-05-22 at 11:13 +0800, kbuild test robot wrote:
tree: git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending.git
for-next
head: 4baaa7d589e24bfe87dfd6c7a1229108be404a28
commit: 4baaa7d589e24bfe87dfd6
Il 23/05/2014 03:28, Elliott, Robert (Server Storage) ha scritto:
Depending on the transport, there may be a race condition between
the command status and the ABORT TASK response; the ABORT TASK
response might get back first. I think that means
scsi_eh_abort_handler's call to scsi_finish_command
Il 23/05/2014 08:09, Hannes Reinecke ha scritto:
And when freeing a command we absolutely need to make sure that
the workqueue is empty.
So calling cancel_delayed_work() was the obvious thing to do.
You would need cancel_delayed_work_sync, but if it really happened that
the work item is runni
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On 05/23/14 11:24, Paolo Bonzini wrote:
> Il 23/05/2014 08:09, Hannes Reinecke ha scritto:
>>
>> And when freeing a command we absolutely need to make sure that
>> the workqueue is empty.
>> So calling cancel_delayed_work() was the obvious thing to do.
>
> You would need cancel_delayed_work_sync,
Il 23/05/2014 12:37, Bart Van Assche ha scritto:
On 05/23/14 11:24, Paolo Bonzini wrote:
Il 23/05/2014 08:09, Hannes Reinecke ha scritto:
And when freeing a command we absolutely need to make sure that
the workqueue is empty.
So calling cancel_delayed_work() was the obvious thing to do.
You
On 05/23/2014 01:28 PM, Paolo Bonzini wrote:
Il 23/05/2014 12:37, Bart Van Assche ha scritto:
On 05/23/14 11:24, Paolo Bonzini wrote:
Il 23/05/2014 08:09, Hannes Reinecke ha scritto:
And when freeing a command we absolutely need to make sure that
the workqueue is empty.
So calling cancel_dela
The spinlock of tgt_lock is only for serializing read and write
req_vq, one lockless seqcount is enough for the purpose.
On one 16core VM with vhost-scsi backend, the patch can improve
IOPS with 3% on random read test.
Cc: Paolo Bonzini
Signed-off-by: Ming Lei
---
drivers/scsi/virtio_scsi.c |
Il 23/05/2014 15:28, Ming Lei ha scritto:
The spinlock of tgt_lock is only for serializing read and write
req_vq, one lockless seqcount is enough for the purpose.
On one 16core VM with vhost-scsi backend, the patch can improve
IOPS with 3% on random read test.
Nice. :) The patch looks good, t
Add a memory barrier prior to sending a new command to the VIOS
to ensure the VIOS does not receive stale data in the command buffer.
Also add a memory barrier when processing the CRQ for completed commands.
Signed-off-by: Brian King
---
drivers/scsi/ibmvscsi/ibmvscsi.c | 10 ++
1 fi
If a CRQ reset is triggered for some reason while in the middle
of performing VSCSI adapter initialization, we don't want to
call the done function for the initialization MAD commands as
this will only result in two threads attempting initialization
at the same time, resulting in failures.
Signed
Please ignore this, its broken... will resend...
-Brian
--
Brian King
Power Linux I/O
IBM Linux Technology Center
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If a CRQ reset is triggered for some reason while in the middle
of performing VSCSI adapter initialization, we don't want to
call the done function for the initialization MAD commands as
this will only result in two threads attempting initialization
at the same time, resulting in failures.
Signed
Add a memory barrier prior to sending a new command to the VIOS
to ensure the VIOS does not receive stale data in the command buffer.
Also add a memory barrier when processing the CRQ for completed commands.
Signed-off-by: Brian King
---
drivers/scsi/ibmvscsi/ibmvscsi.c | 10 ++
1 fi
On 05/19/2014 07:39 PM, James Smart wrote:
:)
for those distros, that want to pull only upstream'd patches, and where
customers expect someone to take phone calls on any hardware recognized
by the distro... the patch is to remove the hardware Emulex/the distro
won't answer any questions for anym
On 05/23/14 17:52, Brian King wrote:
> If a CRQ reset is triggered for some reason while in the middle
> of performing VSCSI adapter initialization, we don't want to
> call the done function for the initialization MAD commands as
> this will only result in two threads attempting initialization
> at
On 04/15/2014 05:26 AM, Christoph Hellwig wrote:
> The IBM virtual SCSI protocol has been obsoleted by ibmvfc, and there
> are no reported of the driver left.
Both ibmvscsi and ibmvfc are still very much in use on IBM Power hardware.
ibmvfc is specific to NPIV configurations, while ibmvscsi can us
On 05/23/2014 11:03 AM, Bart Van Assche wrote:
> On 05/23/14 17:52, Brian King wrote:
>> If a CRQ reset is triggered for some reason while in the middle
>> of performing VSCSI adapter initialization, we don't want to
>> call the done function for the initialization MAD commands as
>> this will only
On Fri, 2014-05-23 at 11:20 +0200, Paolo Bonzini wrote:
> Il 22/05/2014 22:46, Nicholas A. Bellinger ha scritto:
> > Hi Fengguang,
> >
> > On Thu, 2014-05-22 at 11:13 +0800, kbuild test robot wrote:
> >> tree:
> >> git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending.git
> >> for-ne
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From: Nicholas Bellinger
This patch addresses a bug where an early exception for SCSI WRITE
with ImmediateData=Yes was missing the target_put_sess_cmd() call
to drop the extra se_cmd->cmd_kref reference obtained during the
normal iscsit_setup_scsi_cmd() codepath execution.
This bug was manifesti
From: Nicholas Bellinger
This patch converts qla2xxx target code to use generic percpu_ida
tag allocation provided by target-core, thus removing the original
kmem_cache_zalloc() for each struct qla_tgt_cmd descriptor in the
incoming ATIO packet fast-path.
This includes the conversion of qlt_hand
change_queue_depth allows changing per-target queue depth via sysfs.
It also allows the SCSI midlayer to ramp down the number of concurrent
inflight requests in response to a SCSI BUSY status response and allows
the midlayer to ramp the count back up to the device maximum when the
BUSY condition h
Hi Qlogic folks,
A question for you below..
On Sat, 2014-05-24 at 00:43 +, Nicholas A. Bellinger wrote:
> From: Nicholas Bellinger
>
> This patch converts qla2xxx target code to use generic percpu_ida
> tag allocation provided by target-core, thus removing the original
> kmem_cache_zalloc()
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