3 Commits

Author	SHA1	Message	Date
Nicolas Benech	ea2563c033	gpu: nvgpu: unit: increase coverage and docs for mm ... For common.mm subunits, this patch: - adds extra test cases for some lesser used APIs - updates SWUTS to add several functions to Targets fields. JIRA NVGPU-3510 Change-Id: I350fbe0927472e1a07385a8cf87e0f0a8bbb6a8c Signed-off-by: Nicolas Benech <nbenech@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2280067 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>	2020-12-15 14:13:28 -06:00
Philip Elcan	49a620e48a	gpu: nvgpu: mm: limit recursion depth for pd levels ... The two MM functions nvgpu_set_pd_level() and nvgpu_vm_do_free_entries() are simple recursive functions for processing page descriptors (PDs) by traversing the levels in the PDs. MISRA Rule 17.2 prohibits functions calling themselves because "unless recursion is tightly controlled, it is not possible to determine before execution what the worst-case stack usage could be." So, this change limits the recursion depth of each of these functions to the maximum number of page table levels by checking the level against the MM HAL max_page_table_levels(). This also required configuring this HAL in various unit tests as they were no previously using this HAL. JIRA NVGPU-3489 Change-Id: Iadee3fa5ba9f45cd643ac6c202e9296d75d51880 Signed-off-by: Philip Elcan <pelcan@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2224450 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>	2020-12-15 14:10:29 -06:00
Nicolas Benech	7918cbb4f0	gpu: nvgpu: unit: unit tests for mm.as ... This patch adds unit testing for the mm.as unit including: - feature tests - error injection testing - 100% line coverage and 96% branches (one missing branch that cannot be tested or removed) JIRA NVGPU-917 Change-Id: I54bdac21e56554d1d960955f1a140ab98c9f3e5e Signed-off-by: Nicolas Benech <nbenech@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2194399 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>	2020-12-15 14:05:52 -06:00