From patchwork Fri Jan 14 18:17:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Harrison X-Patchwork-Id: 12713903 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 70A2EC433EF for ; Fri, 14 Jan 2022 18:17:43 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BDC8610E2D8; Fri, 14 Jan 2022 18:17:42 +0000 (UTC) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id A7A0010E20E; Fri, 14 Jan 2022 18:17:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1642184235; x=1673720235; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=kWEDePAmLif+gIyj+ZdyY0kO5wDTBpqOFRg0tOpVc1M=; b=Iqbsq5jjT4Yi2tXhOxT/5N8a4CCnhxwDOZ8A1bQwBW1ZmW2jhXXnqfE+ pV58two7AYx88fKrS2LwNLdIwjgscq9gi1d508b188t3ZSfsN6X1HpYeT bKKWZD7YRLhtqvmbMe2hHvhzi7H8CYNX2wfNH6uPvZjVHz+h9XCv7FruD RV+5ieuBwjquwCD6NvjseqsvUe0ye66DKrkVIYFQRqymrbbrsZi4rbZzz CITBgfiW5c3Q4hvk90Xtx8PEaTEOh67B7+pxnlf7pEXaTpHvOvAYzsh0s cDwNGiHjrkPCOJdsKN2de0+iv4979Lpd0PBzi79Sm7GIIbVnpyakPPRfv A==; X-IronPort-AV: E=McAfee;i="6200,9189,10227"; a="224286273" X-IronPort-AV: E=Sophos;i="5.88,289,1635231600"; d="scan'208";a="224286273" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jan 2022 10:17:14 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,289,1635231600"; d="scan'208";a="491602026" Received: from relo-linux-5.jf.intel.com ([10.165.21.134]) by orsmga002.jf.intel.com with ESMTP; 14 Jan 2022 10:17:13 -0800 From: John.C.Harrison@Intel.com To: IGT-Dev@Lists.FreeDesktop.Org Date: Fri, 14 Jan 2022 10:17:11 -0800 Message-Id: <20220114181713.1798514-14-John.C.Harrison@Intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220114181713.1798514-1-John.C.Harrison@Intel.com> References: <20220114181713.1798514-1-John.C.Harrison@Intel.com> MIME-Version: 1.0 Organization: Intel Corporation (UK) Ltd. - Co. Reg. #1134945 - Pipers Way, Swindon SN3 1RJ Subject: [Intel-gfx] [PATCH v5 i-g-t 13/15] lib/i915: Add helper for non-destructive engine property updates 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 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: John Harrison Various tests want to configure engine properties such as pre-emption timeout and heartbeat interval. Some don't bother to restore the original values again afterwards. So, add a helper to make it easier to do this. v2: Fix for platforms with no pre-emption capability. Signed-off-by: John Harrison Reviewed-by: Matthew Brost --- lib/i915/gem_engine_topology.c | 46 ++++++++++++++++++++++++++++++++++ lib/i915/gem_engine_topology.h | 9 +++++++ 2 files changed, 55 insertions(+) diff --git a/lib/i915/gem_engine_topology.c b/lib/i915/gem_engine_topology.c index 729f42b0a..bd12d0bc9 100644 --- a/lib/i915/gem_engine_topology.c +++ b/lib/i915/gem_engine_topology.c @@ -488,6 +488,52 @@ int gem_engine_property_printf(int i915, const char *engine, const char *attr, return ret; } +/* Ensure fast hang detection */ +void gem_engine_properties_configure(int fd, struct gem_engine_properties *params) +{ + int ret; + struct gem_engine_properties write = *params; + + ret = gem_engine_property_scanf(fd, write.engine->name, + "heartbeat_interval_ms", + "%d", ¶ms->heartbeat_interval); + igt_assert_eq(ret, 1); + + ret = gem_engine_property_printf(fd, write.engine->name, + "heartbeat_interval_ms", "%d", + write.heartbeat_interval); + igt_assert_lt(0, ret); + + if (gem_scheduler_has_preemption(fd)) { + ret = gem_engine_property_scanf(fd, write.engine->name, + "preempt_timeout_ms", + "%d", ¶ms->preempt_timeout); + igt_assert_eq(ret, 1); + + ret = gem_engine_property_printf(fd, write.engine->name, + "preempt_timeout_ms", "%d", + write.preempt_timeout); + igt_assert_lt(0, ret); + } +} + +void gem_engine_properties_restore(int fd, const struct gem_engine_properties *saved) +{ + int ret; + + ret = gem_engine_property_printf(fd, saved->engine->name, + "heartbeat_interval_ms", "%d", + saved->heartbeat_interval); + igt_assert_lt(0, ret); + + if (gem_scheduler_has_preemption(fd)) { + ret = gem_engine_property_printf(fd, saved->engine->name, + "preempt_timeout_ms", "%d", + saved->preempt_timeout); + igt_assert_lt(0, ret); + } +} + uint32_t gem_engine_mmio_base(int i915, const char *engine) { unsigned int mmio = 0; diff --git a/lib/i915/gem_engine_topology.h b/lib/i915/gem_engine_topology.h index 4cfab560b..b413aa8ab 100644 --- a/lib/i915/gem_engine_topology.h +++ b/lib/i915/gem_engine_topology.h @@ -115,6 +115,15 @@ struct intel_execution_engine2 gem_eb_flags_to_engine(unsigned int flags); ((e__) = intel_get_current_physical_engine(&i__##e__)); \ intel_next_engine(&i__##e__)) +struct gem_engine_properties { + const struct intel_execution_engine2 *engine; + int preempt_timeout; + int heartbeat_interval; +}; + +void gem_engine_properties_configure(int fd, struct gem_engine_properties *params); +void gem_engine_properties_restore(int fd, const struct gem_engine_properties *saved); + __attribute__((format(scanf, 4, 5))) int gem_engine_property_scanf(int i915, const char *engine, const char *attr, const char *fmt, ...);