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| author |   Dan Williams <dan.j.williams@intel.com> | 2009-09-08 12:02:01 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:38:54 -0700 |
| commit | a309218acee8606f7e235da20cc826eb06d9b0f6 (patch) | |
| tree | abf2cc9830b6a5a52a165e6a736e85cd5d7b36c0 /drivers/dma/ioat/dma.h | |
| parent | ioat: switch watchdog and reset handler from workqueue to timer (diff) | |
| download | linux-dev-a309218acee8606f7e235da20cc826eb06d9b0f6.tar.xz linux-dev-a309218acee8606f7e235da20cc826eb06d9b0f6.zip | |
ioat2,3: dynamically resize descriptor ring
Increment the allocation order of the descriptor ring every time we run
out of descriptors up to a maximum of allocation order specified by the
module parameter 'ioat_max_alloc_order'. After each idle period
decrement the allocation order to a minimum order of
'ioat_ring_alloc_order' (i.e. the default ring size, tunable as a module
parameter).
Signed-off-by: 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.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h index dbfccac3e80c..d9d6a7e3cd76 100644 --- a/drivers/dma/ioat/dma.h +++ b/drivers/dma/ioat/dma.h @@ -88,6 +88,7 @@ struct ioat_chan_common { #define IOAT_RESET_PENDING 2 struct timer_list timer; #define COMPLETION_TIMEOUT msecs_to_jiffies(100) + #define IDLE_TIMEOUT msecs_to_jiffies(2000) #define RESET_DELAY msecs_to_jiffies(100) struct ioatdma_device *device; dma_addr_t completion_dma; |