From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
To: Chris Wilson <chris@chris-wilson.co.uk>
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH 06/19] drm/i915: Enable i915_gem_wait_for_idle() without holding struct_mutex
Date: Fri, 05 Aug 2016 10:31:06 +0300 [thread overview]
Message-ID: <1470382266.3634.29.camel@linux.intel.com> (raw)
In-Reply-To: <20160805065107.GA1736@nuc-i3427.alporthouse.com>
On pe, 2016-08-05 at 07:51 +0100, Chris Wilson wrote:
> On Fri, Aug 05, 2016 at 09:16:21AM +0300, Joonas Lahtinen wrote:
> >
> > On to, 2016-08-04 at 20:52 +0100, Chris Wilson wrote:
> > >
> > > @@ -486,7 +486,8 @@ void __i915_add_request(struct drm_i915_gem_request *request,
> > > */
> > > request->emitted_jiffies = jiffies;
> > > request->previous_seqno = engine->last_submitted_seqno;
> > > - smp_store_mb(engine->last_submitted_seqno, request->fence.seqno);
> > > + engine->last_submitted_seqno = request->fence.seqno;
> > What's up with this change?
> Where we use to use an ordered store of the last seqno for checking
> idleness inside hangcheck, we now use the RCU active tracking instead.
>
> engine->last_submitted_seqno is reduced to a heuristic used for debug
> (gpu error state) and for deciding when to grant a fresh waitboost.
Makes sense, put that to commit message and;
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Regards, Joonas
--
Joonas Lahtinen
Open Source Technology Center
Intel Corporation
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next prev parent reply other threads:[~2016-08-05 7:31 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-04 19:52 Using RCU requests, take 2 Chris Wilson
2016-08-04 19:52 ` [PATCH 01/19] drm/i915: Introduce i915_gem_active_wait_unlocked() Chris Wilson
2016-08-04 19:52 ` [PATCH 02/19] drm/i915: Convert non-blocking waits for requests over to using RCU Chris Wilson
2016-08-05 5:38 ` Joonas Lahtinen
2016-08-04 19:52 ` [PATCH 03/19] drm/i915: Convert non-blocking userptr " Chris Wilson
2016-08-04 19:52 ` [PATCH 04/19] drm/i915/userptr: Remove superfluous interruptible=false on waiting Chris Wilson
2016-08-04 19:52 ` [PATCH 05/19] drm/i915: Remove forced stop ring on suspend/unload Chris Wilson
2016-08-05 5:46 ` Joonas Lahtinen
2016-08-04 19:52 ` [PATCH 06/19] drm/i915: Enable i915_gem_wait_for_idle() without holding struct_mutex Chris Wilson
2016-08-05 6:16 ` Joonas Lahtinen
2016-08-05 6:51 ` Chris Wilson
2016-08-05 7:31 ` Joonas Lahtinen [this message]
2016-08-05 8:23 ` Chris Wilson
2016-08-04 19:52 ` [PATCH 07/19] drm/i915: Simplify do_idling() (Ironlake vt-d w/a) Chris Wilson
2016-08-05 6:19 ` Joonas Lahtinen
2016-08-04 19:52 ` [PATCH 08/19] drm/i915/shrinker: Wait before acquiring struct_mutex under oom Chris Wilson
2016-08-05 6:24 ` Joonas Lahtinen
2016-08-04 19:52 ` [PATCH 09/19] drm/i915: Tidy generation of the GTT mmap offset Chris Wilson
2016-08-04 19:52 ` [PATCH 10/19] drm/i915: Remove unused no-shrinker-steal Chris Wilson
2016-08-04 19:52 ` [PATCH 11/19] drm/i915: Do a nonblocking wait first in pread/pwrite Chris Wilson
2016-08-05 7:08 ` Joonas Lahtinen
2016-08-05 7:59 ` Chris Wilson
2016-08-04 19:52 ` [PATCH 12/19] drm/i915: Remove (struct_mutex) locking for wait-ioctl Chris Wilson
2016-08-04 19:52 ` [PATCH 13/19] drm/i915: Remove (struct_mutex) locking for busy-ioctl Chris Wilson
2016-08-04 19:52 ` [PATCH 14/19] drm/i915: Reduce locking inside swfinish ioctl Chris Wilson
2016-08-05 6:55 ` Joonas Lahtinen
2016-08-04 19:52 ` [PATCH 15/19] drm/i915: Remove pinned check from madvise ioctl Chris Wilson
2016-08-04 19:52 ` [PATCH 16/19] drm/i915: Remove locking for get_tiling Chris Wilson
2016-08-04 19:52 ` [PATCH 17/19] drm/i915: Document and reject invalid tiling modes Chris Wilson
2016-08-05 6:44 ` Joonas Lahtinen
2016-08-04 19:52 ` [PATCH 18/19] drm/i915: Repack fence tiling mode and stride into a single integer Chris Wilson
2016-08-04 19:52 ` [PATCH 19/19] drm/i915: Assert that the request hasn't been retired Chris Wilson
2016-08-05 5:49 ` ✗ Ro.CI.BAT: failure for series starting with [01/19] drm/i915: Introduce i915_gem_active_wait_unlocked() Patchwork
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