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authorTvrtko Ursulin <tvrtko.ursulin@intel.com>2022-01-18 10:54:02 +0000
committerTvrtko Ursulin <tvrtko.ursulin@intel.com>2022-01-18 10:54:02 +0000
commit647bfd26bf054313305ea9c2c4a1c71f3bbfee63 (patch)
tree49abfde459ef32c9811d06ae59dfbaf0000762ab /drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c
parenti915: make array flex_regs static const (diff)
parentMerge tag 'amd-drm-next-5.17-2022-01-12' of https://gitlab.freedesktop.org/agd5f/linux into drm-next (diff)
downloadwireguard-linux-647bfd26bf054313305ea9c2c4a1c71f3bbfee63.tar.xz
wireguard-linux-647bfd26bf054313305ea9c2c4a1c71f3bbfee63.zip
Merge drm/drm-next into drm-intel-gt-next
Maarten needs backmerge to account for header file renames/changes which landed via drm-intel-next and are interfering with his pinning work. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c19
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);