Mapping of large buffers to GMMU end up needing many
pages for the PTE tables. Allocating these one by one
can end up being a performance bottleneck, particularly
in the virtualized case.
This is adding the following changes:
- As the TLB invalidation doesn't have access to mem_off,
allow top-level allocation by alloc_cache_direct().
- Define NVGPU_PD_CACHE_SIZE, the allocation size for a new slab
for the PD cache, effectively set to 64K bytes
- Use the PD cache for any allocation < NVGPU_PD_CACHE_SIZE
When freeing up cached entries, avoid prefetch errors by
invalidating the entry (memset to 0).
- Try to fall back to direct allocation of smaller chunk for
contiguous allocation failures.
- Unit test changes.
Bug 200649243
Change-Id: I0a667af0ba01d9147c703e64fc970880e52a8fbc
Signed-off-by: dt <dt@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2404371
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Move the remaining GMMU HAL related code from the gm20b/, gp10b/,
and gv11b/ directories to new gmmu hal source files.
Also update all makefiles and HAL init code to refelct the new
location of the headers and source code.
JIRA NVGPU-2042
Change-Id: Ic9b85cc547bd0f994ad11042fc4093c517327399
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2103672
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Add -t/--test-level option for the unit test framework. This
correlates with the test plan levels in GVS. L0 tests are a subset of
the L1 tests. Currently, only test levels 0 and 1 are supported.
The test output has been updated to display skipped tests. Skipped
tests are not included in the test dump.
JIRA NVGPU-2251
Change-Id: Icc2ff19a81529be8526e89f70983e96040390e00
Signed-off-by: Philip Elcan <pelcan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2085280
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These tests implement the pd_cache requirement verification tests for
all pd_cache requirements and test specifications. They cover:
o PD GPU address computation
o PD offset computation
o Init
o Multiple inits
o Cleanup*
[*] the cleanup needs some more POSIX memory API support: we need a way
to make sure that all outstanding allocations are freed.
JIRA NVGPU-1323
Change-Id: If6398ad09c9d38f5ac2fdad057bb933f88224599
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2034273
GVS: Gerrit_Virtual_Submit
Reviewed-by: Philip Elcan <pelcan@nvidia.com>
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Rename __nvgpu_set_enabled() to nvgpu_set_enabled(). The original
double underscore was present to indicate that this function is a
function with potentially unintended side effects (enabling a feature
has wide ranging impact).
To not lose this documentation a comment was added to convey that this
function must be used with care.
JIRA NVGPU-1029
Change-Id: I8bfc6fa4c17743f9f8056cb6a7a0f66229ca2583
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1989434
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