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authorIra Snyder <iws@ovro.caltech.edu>2011-03-03 02:55:00 -0500
committerDan Williams <dan.j.williams@intel.com>2011-03-11 20:52:37 -0500
commitdc8d4091575ba81e886ebcdfd1e559c981f82f86 (patch)
tree701c55d8e54d8f4c376a0af4ce10356875c86164 /fs
parent9c4d1e7bdeb1ed4dc0c3341d40662a6fbc5f2dc2 (diff)
fsldma: reduce locking during descriptor cleanup
This merges the fsl_chan_ld_cleanup() function into the dma_do_tasklet() function to reduce locking overhead. In the best case, we will be able to keep the DMA controller busy while we are freeing used descriptors. In all cases, the spinlock is grabbed two times fewer than before on each transaction. Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'fs')
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