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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT 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 E1AF8C433DF for ; Tue, 19 May 2020 13:20:52 +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 7A5EA204EA for ; Tue, 19 May 2020 13:20:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7A5EA204EA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chris-wilson.co.uk 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 2073E6E33C; Tue, 19 May 2020 13:20:52 +0000 (UTC) Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id B63D56E339 for ; Tue, 19 May 2020 13:20:49 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from build.alporthouse.com (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP id 21228634-1500050 for ; Tue, 19 May 2020 14:20:47 +0100 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Tue, 19 May 2020 14:20:44 +0100 Message-Id: <20200519132046.22443-1-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Subject: [Intel-gfx] [CI 1/3] drm/i915/selftests: Add tests for timeslicing 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Make sure that we can execute a virtual request on an already busy engine, and conversely that we can execute a normal request if the engines are already fully occupied by virtual requests. Signed-off-by: Chris Wilson Reviewed-by: Tvrtko Ursulin --- drivers/gpu/drm/i915/gt/selftest_lrc.c | 200 ++++++++++++++++++++++++- 1 file changed, 197 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c index 94854a467e66..7ab0e804f73a 100644 --- a/drivers/gpu/drm/i915/gt/selftest_lrc.c +++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c @@ -3600,9 +3600,11 @@ static int nop_virtual_engine(struct intel_gt *gt, return err; } -static unsigned int select_siblings(struct intel_gt *gt, - unsigned int class, - struct intel_engine_cs **siblings) +static unsigned int +__select_siblings(struct intel_gt *gt, + unsigned int class, + struct intel_engine_cs **siblings, + bool (*filter)(const struct intel_engine_cs *)) { unsigned int n = 0; unsigned int inst; @@ -3611,12 +3613,23 @@ static unsigned int select_siblings(struct intel_gt *gt, if (!gt->engine_class[class][inst]) continue; + if (filter && !filter(gt->engine_class[class][inst])) + continue; + siblings[n++] = gt->engine_class[class][inst]; } return n; } +static unsigned int +select_siblings(struct intel_gt *gt, + unsigned int class, + struct intel_engine_cs **siblings) +{ + return __select_siblings(gt, class, siblings, NULL); +} + static int live_virtual_engine(void *arg) { struct intel_gt *gt = arg; @@ -3771,6 +3784,186 @@ static int live_virtual_mask(void *arg) return 0; } +static long slice_timeout(struct intel_engine_cs *engine) +{ + long timeout; + + /* Enough time for a timeslice to kick in, and kick out */ + timeout = 2 * msecs_to_jiffies_timeout(timeslice(engine)); + + /* Enough time for the nop request to complete */ + timeout += HZ / 5; + + return timeout; +} + +static int slicein_virtual_engine(struct intel_gt *gt, + struct intel_engine_cs **siblings, + unsigned int nsibling) +{ + const long timeout = slice_timeout(siblings[0]); + struct intel_context *ce; + struct i915_request *rq; + struct igt_spinner spin; + unsigned int n; + int err = 0; + + /* + * Virtual requests must take part in timeslicing on the target engines. + */ + + if (igt_spinner_init(&spin, gt)) + return -ENOMEM; + + for (n = 0; n < nsibling; n++) { + ce = intel_context_create(siblings[n]); + if (IS_ERR(ce)) { + err = PTR_ERR(ce); + goto out; + } + + rq = igt_spinner_create_request(&spin, ce, MI_ARB_CHECK); + intel_context_put(ce); + if (IS_ERR(rq)) { + err = PTR_ERR(rq); + goto out; + } + + i915_request_add(rq); + } + + ce = intel_execlists_create_virtual(siblings, nsibling); + if (IS_ERR(ce)) { + err = PTR_ERR(ce); + goto out; + } + + rq = intel_context_create_request(ce); + intel_context_put(ce); + if (IS_ERR(rq)) { + err = PTR_ERR(rq); + goto out; + } + + i915_request_get(rq); + i915_request_add(rq); + if (i915_request_wait(rq, 0, timeout) < 0) { + GEM_TRACE_ERR("%s(%s) failed to slice in virtual request\n", + __func__, rq->engine->name); + GEM_TRACE_DUMP(); + intel_gt_set_wedged(gt); + err = -EIO; + } + i915_request_put(rq); + +out: + igt_spinner_end(&spin); + if (igt_flush_test(gt->i915)) + err = -EIO; + igt_spinner_fini(&spin); + return err; +} + +static int sliceout_virtual_engine(struct intel_gt *gt, + struct intel_engine_cs **siblings, + unsigned int nsibling) +{ + const long timeout = slice_timeout(siblings[0]); + struct intel_context *ce; + struct i915_request *rq; + struct igt_spinner spin; + unsigned int n; + int err = 0; + + /* + * Virtual requests must allow others a fair timeslice. + */ + + if (igt_spinner_init(&spin, gt)) + return -ENOMEM; + + /* XXX We do not handle oversubscription and fairness with normal rq */ + for (n = 0; n < nsibling; n++) { + ce = intel_execlists_create_virtual(siblings, nsibling); + if (IS_ERR(ce)) { + err = PTR_ERR(ce); + goto out; + } + + rq = igt_spinner_create_request(&spin, ce, MI_ARB_CHECK); + intel_context_put(ce); + if (IS_ERR(rq)) { + err = PTR_ERR(rq); + goto out; + } + + i915_request_add(rq); + } + + for (n = 0; !err && n < nsibling; n++) { + ce = intel_context_create(siblings[n]); + if (IS_ERR(ce)) { + err = PTR_ERR(ce); + goto out; + } + + rq = intel_context_create_request(ce); + intel_context_put(ce); + if (IS_ERR(rq)) { + err = PTR_ERR(rq); + goto out; + } + + i915_request_get(rq); + i915_request_add(rq); + if (i915_request_wait(rq, 0, timeout) < 0) { + GEM_TRACE_ERR("%s(%s) failed to slice out virtual request\n", + __func__, siblings[n]->name); + GEM_TRACE_DUMP(); + intel_gt_set_wedged(gt); + err = -EIO; + } + i915_request_put(rq); + } + +out: + igt_spinner_end(&spin); + if (igt_flush_test(gt->i915)) + err = -EIO; + igt_spinner_fini(&spin); + return err; +} + +static int live_virtual_slice(void *arg) +{ + struct intel_gt *gt = arg; + struct intel_engine_cs *siblings[MAX_ENGINE_INSTANCE + 1]; + unsigned int class; + int err; + + if (intel_uc_uses_guc_submission(>->uc)) + return 0; + + for (class = 0; class <= MAX_ENGINE_CLASS; class++) { + unsigned int nsibling; + + nsibling = __select_siblings(gt, class, siblings, + intel_engine_has_timeslices); + if (nsibling < 2) + continue; + + err = slicein_virtual_engine(gt, siblings, nsibling); + if (err) + return err; + + err = sliceout_virtual_engine(gt, siblings, nsibling); + if (err) + return err; + } + + return 0; +} + static int preserved_virtual_engine(struct intel_gt *gt, struct intel_engine_cs **siblings, unsigned int nsibling) @@ -4315,6 +4508,7 @@ int intel_execlists_live_selftests(struct drm_i915_private *i915) SUBTEST(live_virtual_engine), SUBTEST(live_virtual_mask), SUBTEST(live_virtual_preserved), + SUBTEST(live_virtual_slice), SUBTEST(live_virtual_bond), SUBTEST(live_virtual_reset), }; -- 2.20.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx