Dan Williams 09c8a5b85e ioat: switch watchdog and reset handler from workqueue to timer ... In order to support dynamic resizing of the descriptor ring or polling for a descriptor in the presence of a hung channel the reset handler needs to make progress while in a non-preemptible context. The current workqueue implementation precludes polling channel reset completion under spin_lock(). This conversion also allows us to return to opportunistic cleanup in the ioat2 case as the timer implementation guarantees at least one cleanup after every descriptor is submitted. This means the worst case completion latency becomes the timer frequency (for exceptional circumstances), but with the benefit of avoiding busy waiting when the lock is contended. Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>		2009-09-08 17:30:24 -07:00
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dca.c	ioat: ___devinit annotate the initialization paths	2009-09-08 17:30:24 -07:00
dma_v2.c	ioat: switch watchdog and reset handler from workqueue to timer	2009-09-08 17:30:24 -07:00
dma_v2.h	ioat: switch watchdog and reset handler from workqueue to timer	2009-09-08 17:30:24 -07:00
dma.c	ioat: switch watchdog and reset handler from workqueue to timer	2009-09-08 17:30:24 -07:00
dma.h	ioat: switch watchdog and reset handler from workqueue to timer	2009-09-08 17:30:24 -07:00
hw.h	ioat1: trim ioat_dma_desc_sw	2009-09-08 17:30:24 -07:00
Makefile	ioat2,3: convert to a true ring buffer	2009-09-08 17:29:55 -07:00
pci.c	ioat2,3: convert to a true ring buffer	2009-09-08 17:29:55 -07:00
registers.h	ioat: switch watchdog and reset handler from workqueue to timer	2009-09-08 17:30:24 -07:00