diff options
| author | Bryan Thompson <bryan.thompson@unisys.com> | 2014-12-05 17:09:24 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-09 17:32:35 -0800 |
| commit | 9551bfba917a17f850b5887474c56b8772417e70 (patch) | |
| tree | ac167d594ebbe8892e4ef0659acc898c432775f1 /drivers/staging | |
| parent | 4c67da3083c80d9cdf172d99c942bbddfaeae529 (diff) | |
staging: unisys: visorchannel: Describe spinlocks in VISORCHANNEL_Tag struct
Add comments indicating the requirements and use of the insert_lock and
remove_lock in the VISORCHANNEL_Tag structure.
Signed-off-by: Bryan Thompson <bryan.thompson@unisys.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/unisys/visorchannel/visorchannel_funcs.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/staging/unisys/visorchannel/visorchannel_funcs.c b/drivers/staging/unisys/visorchannel/visorchannel_funcs.c index 1568b95ded47..1ce25c237d39 100644 --- a/drivers/staging/unisys/visorchannel/visorchannel_funcs.c +++ b/drivers/staging/unisys/visorchannel/visorchannel_funcs.c @@ -33,9 +33,10 @@ struct VISORCHANNEL_Tag { struct channel_header chan_hdr; uuid_le guid; ulong size; - BOOL needs_lock; - spinlock_t insert_lock; - spinlock_t remove_lock; + BOOL needs_lock; /* channel creator knows if more than one + * thread will be inserting or removing */ + spinlock_t insert_lock; /* protect head writes in chan_hdr */ + spinlock_t remove_lock; /* protect tail writes in chan_hdr */ struct { struct signal_queue_header req_queue; |