tree: git://anongit.freedesktop.org/drm-intel drm-intel-next-queued
head: 1fe699e30113ed6f6e853ff44710d256072ea627
commit: 1fe699e30113ed6f6e853ff44710d256072ea627 [1/1] drm/i915/pmu: Fix sleep under atomic in RC6 readout
config: i386-randconfig-x019-201805 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
git checkout 1fe699e30113ed6f6e853ff44710d256072ea627
# save the attached .config to linux build tree
make ARCH=i386
All errors (new ones prefixed by >>):
drivers/gpu//drm/i915/i915_pmu.c: In function 'get_rc6':
>> drivers/gpu//drm/i915/i915_pmu.c:473:18: error: 'struct dev_pm_info' has no member named 'suspended_jiffies'
kdev->power.suspended_jiffies;
^
drivers/gpu//drm/i915/i915_pmu.c:475:20: error: 'struct dev_pm_info' has no member named 'suspended_jiffies'
val = kdev->power.suspended_jiffies -
^
>> drivers/gpu//drm/i915/i915_pmu.c:477:31: error: 'struct dev_pm_info' has no member named 'accounting_timestamp'
val += jiffies - kdev->power.accounting_timestamp;
^
vim +473 drivers/gpu//drm/i915/i915_pmu.c
417
418 static u64 get_rc6(struct drm_i915_private *i915, bool locked)
419 {
420 unsigned long flags;
421 u64 val;
422
423 if (intel_runtime_pm_get_if_in_use(i915)) {
424 val = intel_rc6_residency_ns(i915, IS_VALLEYVIEW(i915) ?
425 VLV_GT_RENDER_RC6 :
426 GEN6_GT_GFX_RC6);
427
428 if (HAS_RC6p(i915))
429 val += intel_rc6_residency_ns(i915, GEN6_GT_GFX_RC6p);
430
431 if (HAS_RC6pp(i915))
432 val += intel_rc6_residency_ns(i915, GEN6_GT_GFX_RC6pp);
433
434 intel_runtime_pm_put(i915);
435
436 /*
437 * If we are coming back from being runtime suspended we must
438 * be careful not to report a larger value than returned
439 * previously.
440 */
441
442 if (!locked)
443 spin_lock_irqsave(&i915->pmu.lock, flags);
444
445 if (val >= i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur) {
446 i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur = 0;
447 i915->pmu.sample[__I915_SAMPLE_RC6].cur = val;
448 } else {
449 val = i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur;
450 }
451
452 if (!locked)
453 spin_unlock_irqrestore(&i915->pmu.lock, flags);
454 } else {
455 struct pci_dev *pdev = i915->drm.pdev;
456 struct device *kdev = &pdev->dev;
457 unsigned long flags2;
458
459 /*
460 * We are runtime suspended.
461 *
462 * Report the delta from when the device was suspended to now,
463 * on top of the last known real value, as the approximated RC6
464 * counter value.
465 */
466 if (!locked)
467 spin_lock_irqsave(&i915->pmu.lock, flags);
468
469 spin_lock_irqsave(&kdev->power.lock, flags2);
470
471 if (!i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur)
472 i915->pmu.suspended_jiffies_last =
> 473 kdev->power.suspended_jiffies;
474
475 val = kdev->power.suspended_jiffies -
476 i915->pmu.suspended_jiffies_last;
> 477 val += jiffies - kdev->power.accounting_timestamp;
478
479 spin_unlock_irqrestore(&kdev->power.lock, flags2);
480
481 val = jiffies_to_nsecs(val);
482 val += i915->pmu.sample[__I915_SAMPLE_RC6].cur;
483 i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur = val;
484
485 if (!locked)
486 spin_unlock_irqrestore(&i915->pmu.lock, flags);
487 }
488
489 return val;
490 }
491
---
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