From: "Nicholas A. Bellinger" <nab@linux-iscsi.org>
To: adam radford <aradford@gmail.com>
Cc: linux-scsi <linux-scsi@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
James Bottomley <James.Bottomley@suse.de>,
Jeff Garzik <jeff@garzik.org>, Christoph Hellwig <hch@lst.de>,
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>,
Hannes Reinecke <hare@suse.de>,
Mike Christie <michaelc@cs.wisc.edu>,
Mike Anderson <andmike@linux.vnet.ibm.com>,
Tejun Heo <tj@kernel.org>, Vasu Dev <vasu.dev@linux.intel.com>,
Tim Chen <tim.c.chen@linux.intel.com>,
Andi Kleen <ak@linux.intel.com>,
Douglas Gilbert <dgilbert@interlog.com>,
Kashyap Desai <Kashyap.Desai@lsi.com>,
MPTFusionLinux <DL-MPTFusionLinux@lsi.com>
Subject: Re: [PATCH 00/12] LLD host_lock-less conversion status for .38
Date: Thu, 23 Dec 2010 13:17:18 -0800 [thread overview]
Message-ID: <1293139038.4649.117.camel@haakon2.linux-iscsi.org> (raw)
In-Reply-To: <AANLkTi=+QhTdWFEtu9UD9AJC_N+UET8i+7F_qzOS5Znt@mail.gmail.com>
On Mon, 2010-12-20 at 11:33 -0800, adam radford wrote:
> On Sun, Dec 19, 2010 at 1:21 PM, Nicholas A. Bellinger
> <nab@linux-iscsi.org> wrote:
> > *) megaraid_sas: Running in host_lock-less mode with MSI-X interrupts
> >
> > This has not been tested yet, but I would like to get some review from the LSI
> > megaraid_sas folks now that their patches to enable MSI-X interrupts has been sent
> > to linux-scsi.
> >
> > AdamR, any thoughts or comments to add here..?
>
> Nick,
>
> Your patch will not work with the new MegaRAID adapter support I have
> sent in recently. It requires the build IO path be synchronized with
> map updates with the host_lock.
>
Adam,
Thanks for the clarification wrt to your latest patches. Do you think
it would make sense to convert the synchronization between the build IO
path and map updates to use the LLD specific instance->hba_lock instead
of host_lock..? This is the method I have been employing thus far w/
with the host_lock-less conversion for megaraid_sas, and from a quick
grok it appears this might be the most sane approach for MSI-X support.
Any thoughts..?
Best Regards,
--nab
prev parent reply other threads:[~2010-12-23 21:23 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-19 21:21 Nicholas A. Bellinger
2010-12-19 21:21 ` [PATCH 01/12] libiscsi: Convert to host_lock less w/ interrupts disabled internally Nicholas A. Bellinger
2010-12-19 23:38 ` Matthew Wilcox
2010-12-20 1:15 ` Nicholas A. Bellinger
2010-12-20 1:22 ` Nicholas A. Bellinger
2010-12-20 2:07 ` Matthew Wilcox
2010-12-20 9:30 ` Nicholas A. Bellinger
2010-12-21 0:36 ` Mike Christie
2010-12-23 21:23 ` Nicholas A. Bellinger
2010-12-27 3:44 ` Mike Christie
2010-12-21 0:42 ` Mike Christie
2010-12-21 10:53 ` Boaz Harrosh
2010-12-21 23:43 ` Mike Christie
2010-12-23 21:33 ` Nicholas A. Bellinger
2010-12-19 21:21 ` [PATCH 02/12] scsi: Add IRQ_DISABLE_SCSI_QCMD wrapper Nicholas A. Bellinger
2010-12-20 10:48 ` Christoph Hellwig
2010-12-19 21:21 ` [PATCH 03/12] libsas: Convert to host_lock less w/ interrupts disabled externally Nicholas A. Bellinger
2010-12-20 8:58 ` Boaz Harrosh
2010-12-20 9:33 ` Nicholas A. Bellinger
2010-12-19 21:21 ` [PATCH 04/12] message: " Nicholas A. Bellinger
2010-12-19 21:22 ` [PATCH 05/12] fnic: " Nicholas A. Bellinger
2010-12-19 21:22 ` [PATCH 06/12] lpfc: " Nicholas A. Bellinger
2010-12-19 21:22 ` [PATCH 07/12] qla2xxx: " Nicholas A. Bellinger
2010-12-19 23:11 ` Matthew Wilcox
2010-12-20 0:19 ` Jeff Garzik
2010-12-20 1:07 ` Nicholas A. Bellinger
2010-12-20 9:23 ` Nicholas A. Bellinger
2010-12-21 0:37 ` Madhu Iyengar
2010-12-23 21:49 ` Nicholas A. Bellinger
2010-12-19 21:22 ` [PATCH 08/12] qla4xxx: " Nicholas A. Bellinger
2010-12-19 21:22 ` [PATCH 09/12] scsi_debug: Convert to host_lock less Nicholas A. Bellinger
2010-12-19 21:22 ` [PATCH 10/12] megaraid_sas: Add smp_mb__after_atomic_*() for instance->fw_outstanding Nicholas A. Bellinger
2010-12-19 21:22 ` [PATCH 11/12] megaraid_sas: Convert instance->issuepend_done to atomic_t Nicholas A. Bellinger
2010-12-19 21:22 ` [PATCH 12/12] megaraid_sas: Convert SHT->queuecommand() to run host_lock-less Nicholas A. Bellinger
2010-12-20 15:08 ` [PATCH 00/12] LLD host_lock-less conversion status for .38 Desai, Kashyap
2010-12-20 19:33 ` adam radford
2010-12-23 21:17 ` Nicholas A. Bellinger [this message]
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