nv-tegra-mirror/linux-nvgpu
1
0
Fork 0
mirror of git://nv-tegra.nvidia.com/linux-nvgpu.git synced 2025-12-24 10:34:43 +03:00
Code Issues Packages Projects Releases Wiki Activity

gpu: nvgpu: reset HWPM system on reservation

Browse Source 
Hardware HWPM system should be reset when first reservation is made
either for HWPM or PMA_STREAM resource. Support this with below changes

- Add hwpm_refcount counter to track HWPM and PMA_STREAM resource
  reservation count
- Increment counter on every HWPM/PMA resource reservation
- Decrement counter on every resource reservation release
- Reset HWPM system in MC and disable perf unit SLCG on first refcount
  increment
- Reset HWPM system in MC and re-enable perf unit SLCG after last
  refcount decrement
- Add nvgpu_cg_slcg_perf_load_enable() to manage perf unit SLCG

Bug 2510974
Jira NVGPU-5360

Change-Id: I20d2927947c3e4d8073cd3131b7733791e9c9346
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2399594
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Deepak Nibade
2020-08-17 11:29:51 +05:30
committed by Alex Waterman
parent dfd9feace6
commit d90b9a3d4e
4 changed files with 68 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/gpu/nvgpu/common/power_features/cg/cg.c
View File

@@ -262,6 +262,24 @@ done:
nvgpu_mutex_release(&g->cg_pg_lock);
}
#ifdef CONFIG_NVGPU_PROFILER
void nvgpu_cg_slcg_perf_load_enable(struct gk20a *g, bool enable)
{
nvgpu_log_fn(g, " ");
nvgpu_mutex_acquire(&g->cg_pg_lock);
if (!g->slcg_enabled) {
goto done;
}
if (g->ops.cg.slcg_perf_load_gating_prod != NULL) {
g->ops.cg.slcg_perf_load_gating_prod(g, enable);
}
done:
nvgpu_mutex_release(&g->cg_pg_lock);
}
#endif
static void cg_init_gr_slcg_load_gating_prod(struct gk20a *g)
{
if (g->ops.cg.slcg_bus_load_gating_prod != NULL) {