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 D2E34CD3443 for ; Wed, 6 May 2026 03:33:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 793DE10EC74; Wed, 6 May 2026 03:33:10 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="bEuAUp1w"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0D2BE10E144; Wed, 6 May 2026 03:33:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1778038389; x=1809574389; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=fhvCwpOOerNDSxVfaQALugyDzdK6DreUrRK4L1ox3PU=; b=bEuAUp1w2fGBkX2kwzBsUKaSX3M8vGTdXJqbuzKbkbP+YpnQYwdD4I3C jW+xi3kRZkLPYwcEObNHCyu6d5MP4KY42ssK2tAcv5H+A1sEMW+yOXwNW luzAYGfW57lj6L2tqbD7pgcVd3pzktfVBTzSej70SCBaSYJyXmGW2sPl9 wmHiCHhWyuDq3EI7am60FMghsXO09XmWRyqVGePizVK2emGwxWaiR37en 8imVkyZIWhe6plsJuw11wsaLQMVK4WYW1j1LRi7A0IXaE/O9Va3JctRR4 OLFa6pJswfoaw/7AI96FxsqdWj7gXESth2ro3YrZYYJTzWVgL/yIrZ274 A==; X-CSE-ConnectionGUID: /cGoeO+SSreOfWVzMkmxVg== X-CSE-MsgGUID: oeDrbsQWRTuL6oFHxJbYXQ== X-IronPort-AV: E=McAfee;i="6800,10657,11777"; a="78829065" X-IronPort-AV: E=Sophos;i="6.23,218,1770624000"; d="scan'208";a="78829065" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2026 20:33:07 -0700 X-CSE-ConnectionGUID: lHxy+04KTjG2WxqjseVy6w== X-CSE-MsgGUID: ukmuUaJjRm62am4oFugUjA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,218,1770624000"; d="scan'208";a="266342150" Received: from gsse-cloud1.jf.intel.com ([10.54.39.91]) by orviesa002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2026 20:33:07 -0700 From: Matthew Brost To: intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: Andrew Morton , Dave Chinner , Qi Zheng , Roman Gushchin , Muchun Song , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Johannes Weiner , Shakeel Butt , Kairui Song , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Tvrtko Ursulin , =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= , Carlos Santa , Christian Koenig , Huang Rui , Matthew Auld , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Daniel Colascione , Andi Shyti Subject: [PATCH v5 3/5] drm/ttm: Issue direct reclaim at beneficial_order Date: Tue, 5 May 2026 20:32:58 -0700 Message-Id: <20260506033300.3534883-4-matthew.brost@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260506033300.3534883-1-matthew.brost@intel.com> References: <20260506033300.3534883-1-matthew.brost@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Triggering kswap at an order higher than beneficial_order makes little sense, as the driver has already indicated the optimal order at which reclaim is effective. Similarly, issuing direct reclaim or triggering kswap at a lower order than beneficial_order is ineffective, since the driver does not benefit from reclaiming lower-order pages. As a result, direct reclaim should only be issued with __GFP_NORETRY at exactly beneficial_order, or as a fallback, direct reclaim without __GFP_NORETRY at order 0 when failure is not an option. Cc: Andrew Morton Cc: Dave Chinner Cc: Qi Zheng Cc: Roman Gushchin Cc: Muchun Song Cc: David Hildenbrand Cc: Lorenzo Stoakes Cc: "Liam R. Howlett" Cc: Vlastimil Babka Cc: Mike Rapoport Cc: Suren Baghdasaryan Cc: Michal Hocko Cc: Johannes Weiner Cc: Shakeel Butt Cc: Kairui Song Cc: Barry Song Cc: Axel Rasmussen Cc: Yuanchu Xie Cc: Wei Xu Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org Cc: Tvrtko Ursulin Cc: Thomas Hellström Cc: Carlos Santa Cc: Christian Koenig Cc: Huang Rui Cc: Matthew Auld Cc: Matthew Brost Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Thomas Zimmermann Cc: David Airlie Cc: Simona Vetter CC: dri-devel@lists.freedesktop.org Cc: Daniel Colascione Signed-off-by: Matthew Brost Reviewed-by: Christian Koenig Reviewed-by: Andi Shyti --- drivers/gpu/drm/ttm/ttm_pool.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_pool.c b/drivers/gpu/drm/ttm/ttm_pool.c index 278bbe7a11ad..e76c3a5c67bd 100644 --- a/drivers/gpu/drm/ttm/ttm_pool.c +++ b/drivers/gpu/drm/ttm/ttm_pool.c @@ -165,8 +165,8 @@ static struct page *ttm_pool_alloc_page(struct ttm_pool *pool, gfp_t gfp_flags, * Do not add latency to the allocation path for allocations orders * device tolds us do not bring them additional performance gains. */ - if (beneficial_order && order > beneficial_order) - gfp_flags &= ~__GFP_DIRECT_RECLAIM; + if (order && beneficial_order && order != beneficial_order) + gfp_flags &= ~__GFP_RECLAIM; if (!ttm_pool_uses_dma_alloc(pool)) { p = alloc_pages_node(pool->nid, gfp_flags, order); -- 2.34.1