Ujjal Singh 268e2519f5 dmaengine: ioatdma: Add intr_coalesce sysfs entry ... We observed performance increase with DMA copy from memory to MMIO by changing the interrupt coalescing value to 0. The previous set value was projected on the C5xxx Xeon platform and no longer holds true. Removing hard coded value and providing a tune-able in sysfs in order to allow user to tune this on a per channel basis. By default this value will be set to 0. Example of sysfs variable importing for interrupt coalescing value from command line: echo 5> /sys/devices/pci0000:00/0000:00:04.0/dma/dma0chan0/ quickdata/intr_coalesce Reported-by: Nithin Sujir <nsujir@tintri.com> Signed-off-by: Ujjal Singh <ujjal.singh@intel.com> Acked-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>		2017-08-23 21:32:21 +05:30
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dca.c	dmaengine: Replace WARN_TAINT_ONCE() with pr_warn_once()	2017-06-15 09:50:37 +05:30
dma.c	dmaengine: ioatdma: Add intr_coalesce sysfs entry	2017-08-23 21:32:21 +05:30
dma.h	dmaengine: ioatdma: Add intr_coalesce sysfs entry	2017-08-23 21:32:21 +05:30
hw.h	dmaengine: ioatdma: Add Skylake PCI Dev ID	2017-01-02 08:12:59 +05:30
init.c	dmaengine: ioat: constify pci_device_id.	2017-07-18 21:32:14 +05:30
Makefile	dmaengine: ioatdma: removal of dma_v3.c and relevant ioat3 references	2015-08-17 13:37:30 +05:30
prep.c	dmaengine: ioatdma: Squelch framesize warnings	2016-01-25 09:49:55 +05:30
registers.h	i7300_idle: Remove this driver	2016-11-18 12:07:56 +01:00
sysfs.c	dmaengine: ioatdma: Add intr_coalesce sysfs entry	2017-08-23 21:32:21 +05:30