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| author | Chuck Lever <chuck.lever@oracle.com> | 2016-11-29 19:04:58 +0300 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2016-12-01 01:31:13 +0300 |
| commit | dd6fd213b05e7a1f590b470500343dd97c3a32c1 (patch) | |
| tree | d622a047d2990e6ef4da4b9665fb01805edb17cd /Documentation/cma | |
| parent | e4eb42cecc6dc546aac888ee4913d59121e886ee (diff) | |
| download | linux-dd6fd213b05e7a1f590b470500343dd97c3a32c1.tar.xz | |
svcrdma: Remove DMA map accounting
Clean up: sc_dma_used is not required for correct operation. It is
simply a debugging tool to report when svcrdma has leaked DMA maps.
However, manipulating an atomic has a measurable CPU cost, and DMA
map accounting specific to svcrdma will be meaningless once svcrdma
is converted to use the new generic r/w API.
A similar kind of debug accounting can be done simply by enabling
the IOMMU or by using CONFIG_DMA_API_DEBUG, CONFIG_IOMMU_DEBUG, and
CONFIG_IOMMU_LEAK.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'Documentation/cma')
0 files changed, 0 insertions, 0 deletions