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| author | Horia Geant? <horia.geanta@nxp.com> | 2016-01-12 17:59:29 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-17 12:31:04 -0800 |
| commit | 2a6c3d5457e0e63c20125845ff7ccd41b32b53d3 (patch) | |
| tree | 08ab3b1c7f3d6f2bbaedb0b779ec5d35e556fdda /tools/perf/scripts/python/check-perf-trace.py | |
| parent | 3dd3e2544c48d55e975efca5f34b77dbbe8895c9 (diff) | |
crypto: caam - make write transactions bufferable on PPC platforms
commit e7a7104e432c0db8469ca3568daf4f1d1afe3e73 upstream.
Previous change (see "Fixes" tag) to the MCFGR register
clears AWCACHE[0] ("bufferable" AXI3 attribute) (which is "1" at POR).
This makes all writes non-bufferable, causing a ~ 5% performance drop
for PPC-based platforms.
Rework previous change such that MCFGR[AWCACHE]=4'b0011
(bufferable + cacheable) for all platforms.
Note: For ARM-based platforms, AWCACHE[0] is ignored
by the interconnect IP.
Fixes: f10967495144 ("crypto: caam - fix snooping for write transactions")
Signed-off-by: Horia Geant? <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions