diff options
| author | Todd Poynor <[email protected]> | 2018-08-09 20:21:05 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2018-08-27 19:43:44 +0200 |
| commit | 7b49682bdc6cf6f7d55e7c7e74415c2b101a9671 (patch) | |
| tree | 1929d45bb06b94c0ecceb558f20002141c2c040d /tools/perf/scripts/python | |
| parent | 717264bab46e774e196574c77aae5f103b9b2f26 (diff) | |
staging: gasket: page table: remove extraneous memory barriers
Some explicit memory barriers in the page table code are not necessary,
either because:
(a) The barrier follows a non-relaxed MMIO access that already performs
a read or write memory barrier.
(b) The barrier follows DMA API calls for which the device-visible
effects of IOMMU programming are guaranteed to be flushed to the IOMMU
prior to the call returning, and doesn't need to sync with normal memory
access.
Signed-off-by: Todd Poynor <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions