diff options
| author | Hawking Zhang <Hawking.Zhang@amd.com> | 2021-11-25 15:41:37 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-12-13 16:33:16 -0500 |
| commit | cace4bff750ff4f55b16c3aa90aa9376d7488929 (patch) | |
| tree | fff18d45a86aaace0f347ef00b4ab05a748b5dbb /drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c | |
| parent | 4ac955baa9330742b1a49990d830963f91bfa020 (diff) | |
drm/amdgpu: check df_funcs and its callback pointers
in case they are not avaiable in early phase
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Le Ma <Le.Ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c index 82e9ecf84352..71ee361d0972 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c @@ -233,6 +233,10 @@ static void amdgpu_perf_start(struct perf_event *event, int flags) if (WARN_ON_ONCE(!(hwc->state & PERF_HES_STOPPED))) return; + if ((!pe->adev->df.funcs) || + (!pe->adev->df.funcs->pmc_start)) + return; + WARN_ON_ONCE(!(hwc->state & PERF_HES_UPTODATE)); hwc->state = 0; @@ -268,6 +272,10 @@ static void amdgpu_perf_read(struct perf_event *event) pmu); u64 count, prev; + if ((!pe->adev->df.funcs) || + (!pe->adev->df.funcs->pmc_get_count)) + return; + do { prev = local64_read(&hwc->prev_count); @@ -297,6 +305,10 @@ static void amdgpu_perf_stop(struct perf_event *event, int flags) if (hwc->state & PERF_HES_UPTODATE) return; + if ((!pe->adev->df.funcs) || + (!pe->adev->df.funcs->pmc_stop)) + return; + switch (hwc->config_base) { case AMDGPU_PMU_EVENT_CONFIG_TYPE_DF: case AMDGPU_PMU_EVENT_CONFIG_TYPE_XGMI: @@ -326,6 +338,10 @@ static int amdgpu_perf_add(struct perf_event *event, int flags) struct amdgpu_pmu_entry, pmu); + if ((!pe->adev->df.funcs) || + (!pe->adev->df.funcs->pmc_start)) + return -EINVAL; + switch (pe->pmu_perf_type) { case AMDGPU_PMU_PERF_TYPE_DF: hwc->config_base = AMDGPU_PMU_EVENT_CONFIG_TYPE_DF; @@ -371,6 +387,9 @@ static void amdgpu_perf_del(struct perf_event *event, int flags) struct amdgpu_pmu_entry *pe = container_of(event->pmu, struct amdgpu_pmu_entry, pmu); + if ((!pe->adev->df.funcs) || + (!pe->adev->df.funcs->pmc_stop)) + return; amdgpu_perf_stop(event, PERF_EF_UPDATE); |