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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2019-09-06 14:14:49 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2019-09-11 12:34:29 +0200 |
| commit | e5e04d051979dbd636a99099b7a595093c50a4bc (patch) | |
| tree | 02c641871e285fea720da12bd1420bc865ccae83 /tools/perf/scripts/python/check-perf-trace.py | |
| parent | 3fc1ca00653db6371585e3c21c4b873b2f20e60a (diff) | |
iommu/vt-d: Check whether device requires bounce buffer
This adds a helper to check whether a device needs to
use bounce buffer. It also provides a boot time option
to disable the bounce buffer. Users can use this to
prevent the iommu driver from using the bounce buffer
for performance gain.
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Tested-by: Xu Pengfei <pengfei.xu@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions