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0403e38277
Some engines optimize operation by reading ahead in the descriptor chain such that descriptor2 may start execution before descriptor1 completes. If descriptor2 depends on the result from descriptor1 then a fence is required (on descriptor2) to disable this optimization. The async_tx api could implicitly identify dependencies via the 'depend_tx' parameter, but that would constrain cases where the dependency chain only specifies a completion order rather than a data dependency. So, provide an ASYNC_TX_FENCE to explicitly identify data dependencies. Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
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| .. | ||
| async_memcpy.c | ||
| async_memset.c | ||
| async_pq.c | ||
| async_raid6_recov.c | ||
| async_tx.c | ||
| async_xor.c | ||
| Kconfig | ||
| Makefile | ||
| raid6test.c | ||