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dmaengine: ioat setting ioat timeout as module parameter
[ Upstream commit 87730ccbdd
]
DMA transaction time to completion is a function of PCI bandwidth,
transaction size and a queue depth. So hard coded value for timeouts
might be wrong for some scenarios.
Signed-off-by: Leonid Ravich <Leonid.Ravich@emc.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20200701184816.29138-1-leonid.ravich@dell.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
parent
493aed3263
commit
460c0dafea
2 changed files with 12 additions and 2 deletions
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@ -26,6 +26,18 @@
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#include "../dmaengine.h"
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int completion_timeout = 200;
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module_param(completion_timeout, int, 0644);
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MODULE_PARM_DESC(completion_timeout,
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"set ioat completion timeout [msec] (default 200 [msec])");
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int idle_timeout = 2000;
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module_param(idle_timeout, int, 0644);
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MODULE_PARM_DESC(idle_timeout,
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"set ioat idel timeout [msec] (default 2000 [msec])");
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#define IDLE_TIMEOUT msecs_to_jiffies(idle_timeout)
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#define COMPLETION_TIMEOUT msecs_to_jiffies(completion_timeout)
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static char *chanerr_str[] = {
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"DMA Transfer Source Address Error",
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"DMA Transfer Destination Address Error",
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@ -99,8 +99,6 @@ struct ioatdma_chan {
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#define IOAT_RUN 5
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#define IOAT_CHAN_ACTIVE 6
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struct timer_list timer;
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#define COMPLETION_TIMEOUT msecs_to_jiffies(100)
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#define IDLE_TIMEOUT msecs_to_jiffies(2000)
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#define RESET_DELAY msecs_to_jiffies(100)
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struct ioatdma_device *ioat_dma;
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dma_addr_t completion_dma;
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