[Intel-gfx] [PATCH v5 2/7] drm/i915/pmu: Support PMU for all engines

Umesh Nerlige Ramappa
2023-05-16T23:35:51Z

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Given how the metrics are already exported, we also need to run sampling
over engines from all GTs.

Problem of GT frequencies is left for later.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
---
drivers/gpu/drm/i915/i915_pmu.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c
index 96543dce2db1..9edf87ee5d10 100644
--- a/drivers/gpu/drm/i915/i915_pmu.c
+++ b/drivers/gpu/drm/i915/i915_pmu.c
@@ -10,6 +10,7 @@
#include "gt/intel_engine_pm.h"
#include "gt/intel_engine_regs.h"
#include "gt/intel_engine_user.h"
+#include "gt/intel_gt.h"
#include "gt/intel_gt_pm.h"
#include "gt/intel_gt_regs.h"
#include "gt/intel_rc6.h"
@@ -425,8 +426,9 @@ static enum hrtimer_restart i915_sample(struct hrtimer *hrtimer)
struct drm_i915_private *i915 =
container_of(hrtimer, struct drm_i915_private, pmu.timer);
struct i915_pmu *pmu = &i915->pmu;
- struct intel_gt *gt = to_gt(i915);
unsigned int period_ns;
+ struct intel_gt *gt;
+ unsigned int i;
ktime_t now;

if (!READ_ONCE(pmu->timer_enabled))
@@ -442,8 +444,13 @@ static enum hrtimer_restart i915_sample(struct hrtimer *hrtimer)
* grabbing the forcewake. However the potential error from timer call-
* back delay greatly dominates this so we keep it simple.
*/
- engines_sample(gt, period_ns);
- frequency_sample(gt, period_ns);
+
+ for_each_gt(gt, i915, i) {
+ engines_sample(gt, period_ns);
+
+ if (i == 0) /* FIXME */
+ frequency_sample(gt, period_ns);
+ }

hrtimer_forward(hrtimer, now, ns_to_ktime(PERIOD));

--
2.36.1