In some cases, we would get deadlock issue due to there are two locks
acquisition on common clk driver's lock and nvgpu driver's locks. At
the bug, inconsistent lock ordering problem will come with one thread
gets "nvgpu lock -> clk lock" and the other thread gets "clk lock ->
nvgpu lock".
Slove the latter path with one-time initializing clk_parent entry
and use cached data afterward.
Bug 2555115
Change-Id: I31c5c2728f406307e7cfd4e555f4db0c163234d8
Signed-off-by: Jeremy Ho <jeremyh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2146727
(cherry picked from commit 42c2bdfb9f)
Reviewed-on: https://git-master.nvidia.com/r/2160290
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
- Fix Misra rule 20.7: Macro parameter expands into an expression without being
wrapped by parentheses.
- Following two macros has been updated to fix the above violation,
HZ_TO_MHZ_ULL and MHZ_TO_HZ_ULL.
Jira NVGPU-3176
Change-Id: I03f7d8f7d5c91ca33fcc594fed0359d5c62eea6b
Signed-off-by: Antony Clince Alex <aalex@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2120192
GVS: Gerrit_Virtual_Submit
Reviewed-by: Philip Elcan <pelcan@nvidia.com>
Reviewed-by: Vaibhav Kachore <vkachore@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This reverts commit e9a6d179a4 ("gpu: nvgpu: cache gpu clk rate")
- Real clock rate doesn't always equal clock rate requested by caller
- call of clk_set_rate() and update of cached_rate are not atomic
- Real root cause for Bug 2051688 is in bpmp and gboost design
Bug 2538692
Change-Id: I9248e0c69e2271ed2d0070587db59afa6f8160f2
Signed-off-by: Peng Liu <pengliu@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2109708
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
