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 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 BEDB1C79FBF for ; Thu, 10 Sep 2026 18:43:08 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 574D210E2C6; Thu, 10 Sep 2026 18:43:08 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="is1iFzd1"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.16]) by gabe.freedesktop.org (Postfix) with ESMTPS id 282BF10E2A0 for ; Thu, 10 Sep 2026 18:43:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1789065783; x=1820601783; h=from:to:subject:date:message-id:mime-version: content-transfer-encoding; bh=W/0L530WhXWw+9Gl8IAuSQ2gu5NBAKMBoYJjWEjf8DQ=; b=is1iFzd1jc2cn0adIs0DHfmFPTPzjDS59uvhe0XCmbXCYVUNbLAWBSH3 nQ3TtIHj8zsMgzbAauu3Db+tTENUTdnbQfywMM7fhiLAid5dAceCSgzDv hp7au8nqf5qk7OeLD4pTXVkwHBPtEE4v7ykk9IY5W3n2XJKKHR3/pzTst stGLV9IxwJyGRE1I8FwTCKmRNQOcKC+D9DcWBxZz5fVwpQDAmA45Z08Kk KIECPxZknijiL44hCxvIteR0dwUYxonHVQHoHDwJgPVDRQmLNbAhy7aH+ XIZsObsZ/t1uT7olDZx5CvW0MdyNozMEb0NkW2FgnA54K0ORd1cjCRsI5 Q==; X-CSE-ConnectionGUID: /y4cUEe4Tee3B3mj4p+a2g== X-CSE-MsgGUID: aqIl2TlgQV+RM3EL7M1qwQ== X-IronPort-AV: E=McAfee;i="6800,10657,11901"; a="77085242" X-IronPort-AV: E=Sophos;i="6.27,95,1787036400"; d="scan'208";a="77085242" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Sep 2026 11:43:03 -0700 X-CSE-ConnectionGUID: tzsliNiiQtGlllSD3wHLRQ== X-CSE-MsgGUID: V2zvgMwyQRWqe3G+33rfFg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,95,1787036400"; d="scan'208";a="268424699" Received: from orsosgc001.jf.intel.com ([10.54.56.63]) by fmviesa007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Sep 2026 11:43:03 -0700 From: Umesh Nerlige Ramappa To: intel-gfx@lists.freedesktop.org, vinay.belgaumkar@intel.com Subject: [PATCH 0/2] Fixup deadlock scenarios in the PMU path Date: Thu, 10 Sep 2026 11:42:54 -0700 Message-ID: <20260910184253.1231313-4-umesh.nerlige.ramappa@intel.com> X-Mailer: git-send-email 2.55.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Based on one user report bug regarding a deadlock in the guc_engine_busyness path, this series fixes such scenarios. Signed-off-by: Umesh Nerlige Ramappa Umesh Nerlige Ramappa (2): drm/i915/guc: Use a delayed wakeref put in guc_engine_busyness() drm/i915/pmu: Use a delayed wakeref put in get_rc6() drivers/gpu/drm/i915/gt/intel_gt_pm.h | 24 +++++++++++++++++++ .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 7 +++++- drivers/gpu/drm/i915/i915_pmu.c | 7 +++++- 3 files changed, 36 insertions(+), 2 deletions(-) -- 2.55.0