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From: Chris Wilson <chris@chris-wilson.co.uk>
To: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>,
	intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH 06/12] drm/i915: Show support for accurate sw PMU busyness tracking
Date: Mon, 04 Feb 2019 12:29:18 +0000	[thread overview]
Message-ID: <154928335781.14784.12868298089285155606@skylake-alporthouse-com> (raw)
In-Reply-To: <154928328421.14784.4237135257369472880@skylake-alporthouse-com>

Quoting Chris Wilson (2019-02-04 12:28:04)
> Quoting Tvrtko Ursulin (2019-02-04 12:14:38)
> > 
> > On 04/02/2019 08:41, Chris Wilson wrote:
> > > Expose whether or not we support the PMU software tracking in our
> > > scheduler capabilities, so userspace can query at runtime.
> > 
> > I am leaning towards thinking PMU is a backend and not the scheduler 
> > feature. We could export it via engine discovery for instance.
> 
> The sw metrics are buggy. They include semaphore time on top of busy,
> but historically that has always been separate (and how it's measured by
> the HW).

Furthermore they aren't even universally available today, breaking the
current assumption of HAS_EXECLISTS -> has SW PMU.
-Chris
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  reply	other threads:[~2019-02-04 12:29 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-04  8:41 [PATCH 01/12] drm/i915: Allow normal clients to always preempt idle priority clients Chris Wilson
2019-02-04  8:41 ` [PATCH 02/12] drm/i915/execlists: Suppress mere WAIT preemption Chris Wilson
2019-02-04 10:06   ` Tvrtko Ursulin
2019-02-04 10:18     ` Chris Wilson
2019-02-04 12:08       ` Tvrtko Ursulin
2019-02-04 12:19         ` Chris Wilson
2019-02-04 12:29           ` Tvrtko Ursulin
2019-02-04 10:49   ` [PATCH] " Chris Wilson
2019-02-04  8:41 ` [PATCH 03/12] drm/i915/execlists: Suppress redundant preemption Chris Wilson
2019-02-04 12:05   ` Tvrtko Ursulin
2019-02-04 12:25     ` Chris Wilson
2019-02-04  8:41 ` [PATCH 04/12] drm/i915/selftests: Exercise some AB...BA preemption chains Chris Wilson
2019-02-04  8:41 ` [PATCH 05/12] drm/i915: Trim NEWCLIENT boosting Chris Wilson
2019-02-04 12:11   ` Tvrtko Ursulin
2019-02-04 12:26     ` Chris Wilson
2019-02-04 12:42       ` Tvrtko Ursulin
2019-02-04 12:27     ` Chris Wilson
2019-02-04  8:41 ` [PATCH 06/12] drm/i915: Show support for accurate sw PMU busyness tracking Chris Wilson
2019-02-04 12:14   ` Tvrtko Ursulin
2019-02-04 12:28     ` Chris Wilson
2019-02-04 12:29       ` Chris Wilson [this message]
2019-02-04 12:37       ` Tvrtko Ursulin
2019-02-04 12:43         ` Chris Wilson
2019-02-04  8:41 ` [PATCH 07/12] drm/i915: Revoke mmaps and prevent access to fence registers across reset Chris Wilson
2019-02-04 13:33   ` Mika Kuoppala
2019-02-04 13:47     ` Chris Wilson
2019-02-04  8:41 ` [PATCH 08/12] drm/i915: Force the GPU reset upon wedging Chris Wilson
2019-02-04  8:41 ` [PATCH 09/12] drm/i915: Uninterruptibly drain the timelines on unwedging Chris Wilson
2019-02-04  8:41 ` [PATCH 10/12] drm/i915: Wait for old resets before applying debugfs/i915_wedged Chris Wilson
2019-02-04  8:41 ` [PATCH 11/12] drm/i915: Serialise resets with wedging Chris Wilson
2019-02-04  8:41 ` [PATCH 12/12] drm/i915: Don't claim an unstarted request was guilty Chris Wilson
2019-02-04  9:20 ` [PATCH 01/12] drm/i915: Allow normal clients to always preempt idle priority clients Tvrtko Ursulin
2019-02-04 10:19 ` ✗ Fi.CI.CHECKPATCH: warning for series starting with [01/12] " Patchwork
2019-02-04 10:23 ` ✗ Fi.CI.SPARSE: " Patchwork
2019-02-04 10:48 ` ✓ Fi.CI.BAT: success " Patchwork
2019-02-04 11:27 ` ✗ Fi.CI.BAT: failure for series starting with [01/12] drm/i915: Allow normal clients to always preempt idle priority clients (rev2) Patchwork

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