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authorDan Williams <dan.j.williams@intel.com>2010-05-01 15:22:55 -0700
committerDan Williams <dan.j.williams@intel.com>2010-05-01 15:22:55 -0700
commit074cc47679f8b0931d7d5384e95822d82768f149 (patch)
treebd4699a1c769553f2bbfa931913352d26c81dc4d /drivers/dma/ioat/dma.h
parentabb12dfd50c7580d7dcbd581cf6265ba4d01ea7e (diff)
ioat2,3: convert to producer/consumer locking
Use separate locks for the descriptor prep (producer) and descriptor cleanup (consumer) paths. Allows the producer path to run concurrently with the cleanup path. Inspired by Documentation/circular-buffer.txt. Cc: David Howells <dhowells@redhat.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Maciej Sosnowski <maciej.sosnowski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/ioat/dma.h')
-rw-r--r--drivers/dma/ioat/dma.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h
index 86b97ac8774e..0c76578e9911 100644
--- a/drivers/dma/ioat/dma.h
+++ b/drivers/dma/ioat/dma.h
@@ -96,6 +96,7 @@ struct ioat_chan_common {
#define IOAT_COMPLETION_ACK 1
#define IOAT_RESET_PENDING 2
#define IOAT_KOBJ_INIT_FAIL 3
+ #define IOAT_RESHAPE_PENDING 4
struct timer_list timer;
#define COMPLETION_TIMEOUT msecs_to_jiffies(100)
#define IDLE_TIMEOUT msecs_to_jiffies(2000)