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| author |   Ben Hutchings <ben.hutchings@codethink.co.uk> | 2015-03-03 00:52:00 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-03-02 21:30:56 -0500 |
| commit | 7d7355f58ba4f9d68d2fb79864bab4ccb618e4e1 (patch) | |
| tree | 79a7efdc9a433f1c5f05651adc70c2579760c313 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | Merge branch 'mlx4' (diff) | |
| download | linux-dev-7d7355f58ba4f9d68d2fb79864bab4ccb618e4e1.tar.xz linux-dev-7d7355f58ba4f9d68d2fb79864bab4ccb618e4e1.zip | |
sh_eth: Ensure proper ordering of descriptor active bit write/read
When submitting a DMA descriptor, the active bit must be written last.
When reading a completed DMA descriptor, the active bit must be read
first.
Add memory barriers to ensure that this ordering is maintained.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions