From: Hannes Reinecke <hare@suse.de>
To: Yijing Wang <wangyijing@huawei.com>,
jejb@linux.vnet.ibm.com, martin.petersen@oracle.com
Cc: chenqilin2@huawei.com, hare@suse.com, linux-scsi@vger.kernel.org,
linux-kernel@vger.kernel.org, chenxiang66@hisilicon.com,
huangdaode@hisilicon.com, wangkefeng.wang@huawei.com,
zhaohongjiang@huawei.com, dingtianhong@huawei.com,
guohanjun@huawei.com, yanaijie@huawei.com, hch@lst.de,
dan.j.williams@intel.com, emilne@redhat.com, thenzl@redhat.com,
wefu@redhat.com, charles.chenxin@huawei.com,
chenweilong@huawei.com, john.garry@huawei.com,
Johannes Thumshirn <jthumshirn@suse.de>
Subject: Re: [PATCH v3 3/7] libsas: Use new workqueue to run sas event
Date: Fri, 14 Jul 2017 08:42:34 +0200 [thread overview]
Message-ID: <3e53940a-0913-1d08-3719-c45ffa854db7@suse.de> (raw)
In-Reply-To: <1499670369-44143-4-git-send-email-wangyijing@huawei.com>
On 07/10/2017 09:06 AM, Yijing Wang wrote:
> Now all libsas works are queued to scsi host workqueue,
> include sas event work post by LLDD and sas discovery
> work, and a sas hotplug flow may be divided into several
> works, e.g libsas receive a PORTE_BYTES_DMAED event,
> now we process it as following steps:
> sas_form_port --- run in work in shot workq
> sas_discover_domain --- run in another work in shost workq
> ...
> sas_probe_devices --- run in new work in shost workq
> We found during hot-add a device, libsas may need run several
> works in same workqueue to add device in system, the process is
> not atomic, it may interrupt by other sas event works, like
> PHYE_LOSS_OF_SIGNAL. Finally, we would found lots unexpected
> errors. This patch is preparation of execute libsas sas event
> in sync.
>
> Signed-off-by: Yijing Wang <wangyijing@huawei.com>
> CC: John Garry <john.garry@huawei.com>
> CC: Johannes Thumshirn <jthumshirn@suse.de>
> CC: Ewan Milne <emilne@redhat.com>
> CC: Christoph Hellwig <hch@lst.de>
> CC: Tomas Henzl <thenzl@redhat.com>
> CC: Dan Williams <dan.j.williams@intel.com>
> ---
> drivers/scsi/libsas/sas_event.c | 4 ++--
> drivers/scsi/libsas/sas_init.c | 7 +++++++
> include/scsi/libsas.h | 1 +
> 3 files changed, 10 insertions(+), 2 deletions(-)
>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@suse.de +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)
next prev parent reply other threads:[~2017-07-14 6:42 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-10 7:06 [PATCH v3 0/7] Enhance libsas hotplug feature Yijing Wang
2017-07-10 7:06 ` [PATCH v3 1/7] libsas: Use static sas event pool to appease sas event lost Yijing Wang
2017-07-11 15:37 ` John Garry
2017-07-12 2:06 ` wangyijing
2017-07-12 8:17 ` John Garry
2017-07-12 8:47 ` wangyijing
2017-07-12 10:13 ` John Garry
2017-07-13 2:13 ` wangyijing
2017-07-14 6:40 ` Hannes Reinecke
2017-07-10 7:06 ` [PATCH v3 2/7] libsas: remove unused port_gone_completion Yijing Wang
2017-07-11 15:54 ` John Garry
2017-07-12 2:18 ` wangyijing
2017-07-14 6:40 ` Hannes Reinecke
2017-07-10 7:06 ` [PATCH v3 3/7] libsas: Use new workqueue to run sas event Yijing Wang
2017-07-14 6:42 ` Hannes Reinecke [this message]
2017-07-10 7:06 ` [PATCH v3 4/7] libsas: add sas event wait-complete support Yijing Wang
2017-07-14 6:51 ` Hannes Reinecke
2017-07-14 7:46 ` wangyijing
2017-07-14 8:42 ` John Garry
2017-07-10 7:06 ` [PATCH v3 5/7] libsas: add a new workqueue to run probe/destruct discovery event Yijing Wang
2017-07-12 16:50 ` John Garry
2017-07-13 2:36 ` wangyijing
2017-07-14 6:52 ` Hannes Reinecke
2017-07-10 7:06 ` [PATCH v3 6/7] libsas: add wait-complete support to sync " Yijing Wang
2017-07-12 13:51 ` John Garry
2017-07-13 2:19 ` wangyijing
2017-07-14 6:53 ` Hannes Reinecke
2017-07-10 7:06 ` [PATCH v3 7/7] libsas: release disco mutex during waiting in sas_ex_discover_end_dev Yijing Wang
2017-07-13 16:10 ` John Garry
2017-07-14 1:44 ` wangyijing
2017-07-14 8:26 ` John Garry
2017-07-14 6:55 ` Hannes Reinecke
2017-07-12 9:59 ` [PATCH v3 0/7] Enhance libsas hotplug feature John Garry
2017-07-12 11:56 ` Johannes Thumshirn
2017-07-13 1:27 ` wangyijing
2017-07-13 1:37 ` wangyijing
2017-07-13 8:08 ` John Garry
2017-07-13 8:38 ` wangyijing
2017-07-14 8:19 ` wangyijing
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