From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B37A4C07E99 for ; Mon, 12 Jul 2021 20:06:10 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 63FF0611CD for ; Mon, 12 Jul 2021 20:06:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 63FF0611CD Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id F164989DED; Mon, 12 Jul 2021 20:06:09 +0000 (UTC) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id 59F3289DE3; Mon, 12 Jul 2021 20:06:08 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10043"; a="207032169" X-IronPort-AV: E=Sophos;i="5.84,234,1620716400"; d="scan'208";a="207032169" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jul 2021 13:06:06 -0700 X-IronPort-AV: E=Sophos;i="5.84,234,1620716400"; d="scan'208";a="451517605" Received: from dut181-tglu.fm.intel.com ([10.105.23.88]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jul 2021 13:06:05 -0700 Date: Mon, 12 Jul 2021 20:06:04 +0000 From: Matthew Brost To: John Harrison Message-ID: <20210712200604.GB14920@DUT181-TGLU.fm.intel.com> References: <20210624070516.21893-1-matthew.brost@intel.com> <20210624070516.21893-28-matthew.brost@intel.com> <1f82fc27-d857-228a-99fb-038295be77d0@intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1f82fc27-d857-228a-99fb-038295be77d0@intel.com> Subject: Re: [Intel-gfx] [PATCH 27/47] drm/i915: Track 'serial' counts for virtual engines X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Mon, Jul 12, 2021 at 11:11:48AM -0700, John Harrison wrote: > On 6/24/2021 00:04, Matthew Brost wrote: > > From: John Harrison > > > > The serial number tracking of engines happens at the backend of > > request submission and was expecting to only be given physical > > engines. However, in GuC submission mode, the decomposition of virtual > > to physical engines does not happen in i915. Instead, requests are > > submitted to their virtual engine mask all the way through to the > > hardware (i.e. to GuC). This would mean that the heart beat code > > thinks the physical engines are idle due to the serial number not > > incrementing. > > > > This patch updates the tracking to decompose virtual engines into > > their physical constituents and tracks the request against each. This > > is not entirely accurate as the GuC will only be issuing the request > > to one physical engine. However, it is the best that i915 can do given > > that it has no knowledge of the GuC's scheduling decisions. > > > > Signed-off-by: John Harrison > > Signed-off-by: Matthew Brost > Need to pull in the updated subject line and commit description from Tvrtko > in the RFC patch set review. > Yep, forgot to do this. Will do in next rev. Matt > John. > > > --- > > drivers/gpu/drm/i915/gt/intel_engine_types.h | 2 ++ > > .../gpu/drm/i915/gt/intel_execlists_submission.c | 6 ++++++ > > drivers/gpu/drm/i915/gt/intel_ring_submission.c | 6 ++++++ > > drivers/gpu/drm/i915/gt/mock_engine.c | 6 ++++++ > > .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 16 ++++++++++++++++ > > drivers/gpu/drm/i915/i915_request.c | 4 +++- > > 6 files changed, 39 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h > > index 5b91068ab277..1dc59e6c9a92 100644 > > --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h > > +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h > > @@ -388,6 +388,8 @@ struct intel_engine_cs { > > void (*park)(struct intel_engine_cs *engine); > > void (*unpark)(struct intel_engine_cs *engine); > > + void (*bump_serial)(struct intel_engine_cs *engine); > > + > > void (*set_default_submission)(struct intel_engine_cs *engine); > > const struct intel_context_ops *cops; > > diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c > > index bd4ced794ff9..9cfb8800a0e6 100644 > > --- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c > > +++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c > > @@ -3203,6 +3203,11 @@ static void execlists_release(struct intel_engine_cs *engine) > > lrc_fini_wa_ctx(engine); > > } > > +static void execlist_bump_serial(struct intel_engine_cs *engine) > > +{ > > + engine->serial++; > > +} > > + > > static void > > logical_ring_default_vfuncs(struct intel_engine_cs *engine) > > { > > @@ -3212,6 +3217,7 @@ logical_ring_default_vfuncs(struct intel_engine_cs *engine) > > engine->cops = &execlists_context_ops; > > engine->request_alloc = execlists_request_alloc; > > + engine->bump_serial = execlist_bump_serial; > > engine->reset.prepare = execlists_reset_prepare; > > engine->reset.rewind = execlists_reset_rewind; > > diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c > > index 5d42a12ef3d6..e1506b280df1 100644 > > --- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c > > +++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c > > @@ -1044,6 +1044,11 @@ static void setup_irq(struct intel_engine_cs *engine) > > } > > } > > +static void ring_bump_serial(struct intel_engine_cs *engine) > > +{ > > + engine->serial++; > > +} > > + > > static void setup_common(struct intel_engine_cs *engine) > > { > > struct drm_i915_private *i915 = engine->i915; > > @@ -1063,6 +1068,7 @@ static void setup_common(struct intel_engine_cs *engine) > > engine->cops = &ring_context_ops; > > engine->request_alloc = ring_request_alloc; > > + engine->bump_serial = ring_bump_serial; > > /* > > * Using a global execution timeline; the previous final breadcrumb is > > diff --git a/drivers/gpu/drm/i915/gt/mock_engine.c b/drivers/gpu/drm/i915/gt/mock_engine.c > > index 68970398e4ef..9203c766db80 100644 > > --- a/drivers/gpu/drm/i915/gt/mock_engine.c > > +++ b/drivers/gpu/drm/i915/gt/mock_engine.c > > @@ -292,6 +292,11 @@ static void mock_engine_release(struct intel_engine_cs *engine) > > intel_engine_fini_retire(engine); > > } > > +static void mock_bump_serial(struct intel_engine_cs *engine) > > +{ > > + engine->serial++; > > +} > > + > > struct intel_engine_cs *mock_engine(struct drm_i915_private *i915, > > const char *name, > > int id) > > @@ -318,6 +323,7 @@ struct intel_engine_cs *mock_engine(struct drm_i915_private *i915, > > engine->base.cops = &mock_context_ops; > > engine->base.request_alloc = mock_request_alloc; > > + engine->base.bump_serial = mock_bump_serial; > > engine->base.emit_flush = mock_emit_flush; > > engine->base.emit_fini_breadcrumb = mock_emit_breadcrumb; > > engine->base.submit_request = mock_submit_request; > > diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c > > index ccbcf024b31b..d1badd7137b7 100644 > > --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c > > +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c > > @@ -1496,6 +1496,20 @@ static void guc_release(struct intel_engine_cs *engine) > > lrc_fini_wa_ctx(engine); > > } > > +static void guc_bump_serial(struct intel_engine_cs *engine) > > +{ > > + engine->serial++; > > +} > > + > > +static void virtual_guc_bump_serial(struct intel_engine_cs *engine) > > +{ > > + struct intel_engine_cs *e; > > + intel_engine_mask_t tmp, mask = engine->mask; > > + > > + for_each_engine_masked(e, engine->gt, mask, tmp) > > + e->serial++; > > +} > > + > > static void guc_default_vfuncs(struct intel_engine_cs *engine) > > { > > /* Default vfuncs which can be overridden by each engine. */ > > @@ -1504,6 +1518,7 @@ static void guc_default_vfuncs(struct intel_engine_cs *engine) > > engine->cops = &guc_context_ops; > > engine->request_alloc = guc_request_alloc; > > + engine->bump_serial = guc_bump_serial; > > engine->sched_engine->schedule = i915_schedule; > > @@ -1836,6 +1851,7 @@ guc_create_virtual(struct intel_engine_cs **siblings, unsigned int count) > > ve->base.cops = &virtual_guc_context_ops; > > ve->base.request_alloc = guc_request_alloc; > > + ve->base.bump_serial = virtual_guc_bump_serial; > > ve->base.submit_request = guc_submit_request; > > diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c > > index 7f7aa096e873..de9deb95b8b1 100644 > > --- a/drivers/gpu/drm/i915/i915_request.c > > +++ b/drivers/gpu/drm/i915/i915_request.c > > @@ -692,7 +692,9 @@ bool __i915_request_submit(struct i915_request *request) > > request->ring->vaddr + request->postfix); > > trace_i915_request_execute(request); > > - engine->serial++; > > + if (engine->bump_serial) > > + engine->bump_serial(engine); > > + > > result = true; > > GEM_BUG_ON(test_bit(I915_FENCE_FLAG_ACTIVE, &request->fence.flags)); > _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx