On 12/14/2015 07:10 AM, Jitendra Bhivare wrote:
From: Jitendra <jitendra.bhivare@xxxxxxxxxxxxx>
This is second part of actual fix for soft lockup.
All mbox cmds issued using BMBX and MCC are synchronized using mbox_lock.
alloc_mcc_tag/free_mcc_tag is done under mcc_lock and tag_state is
accessed using atomic operations.
Mailbox command time out is now set to 30s as per FW requirement.
And here is the change from spin_lock to mutex_lock.
You should put that into the description.
And I would recommend splitting this patch into three:
- Move spinlock to mutex
- tag state atomic operations
- mbox_lock/mcc_lock ordering changes
Also there are some fixes in here (change of msleep, checking of a
return value) which do not really belong here, and should be done in
a separate patch, too.
Cheers,
Hannes
--
Dr. Hannes Reinecke zSeries & Storage
hare@xxxxxxx +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
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