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| author |   Ilya Yanok <yanok@emcraft.com> | 2010-10-27 01:52:58 +0200 |
|---|---|---|
| committer |   Grant Likely <grant.likely@secretlab.ca> | 2010-12-29 22:29:36 -0700 |
| commit | a276991357c63bfb8d3ffdf5800054dba4f8d558 (patch) | |
| tree | 8a3bb0d23eb2011f69e426ab1d87bbe311567c96 /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf | |
| parent | powerpc/512x: add MPC8308 dma support (diff) | |
| download | wireguard-linux-a276991357c63bfb8d3ffdf5800054dba4f8d558.tar.xz wireguard-linux-a276991357c63bfb8d3ffdf5800054dba4f8d558.zip | |
powerpc/512x: try to free dma descriptors in case of allocation failure
Currently completed descriptors are processed in the tasklet. This can
lead to dead lock in case of CONFIG_NET_DMA enabled (new requests are
submitted from softirq context and dma_memcpy_to_iovec() busy loops until
the requests is submitted). To prevent this we should process completed
descriptors from the allocation failure path in prepare_memcpy too.
Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Cc: Piotr Ziecik <kosmo@semihalf.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf')
0 files changed, 0 insertions, 0 deletions