From patchwork Tue Jun 18 07:18:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Thomas_Hellstr=C3=B6m?= X-Patchwork-Id: 13701852 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 35F4EC2BA1A for ; Tue, 18 Jun 2024 07:18:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2CBC910E4F5; Tue, 18 Jun 2024 07:18:37 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="i+hU50Au"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by gabe.freedesktop.org (Postfix) with ESMTPS id 432A210E4F5; Tue, 18 Jun 2024 07:18:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1718695116; x=1750231116; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=iQLIBF95FCs0qzZ+14IJJqLsIlylf2FOK1qbw0U2c10=; b=i+hU50AuqzdY788M2LcyQnlnTsYxaLN3Ay65sPy0UTEVWD3kuuEkcjCl 6/r0SeZ/VdjFZ25ZkzEOxmenENazzRr3hTlhJO7A335mM1IjH1z4gEmwe fdJUCyDlapXaXHv++CzVXkV4XQ0T9ISgxyFSriDy4gCPClCRsKNZw3XPn Oz6a5BGI2Pq4g4onQIW4J5+vmyi+uR/C0czyjspsC8D+JCMfxDQ75VomG u9BhCg9o9s/C0w2nPdH5edx5QhUyFnKyT+VjORp4rn0pZ7MYC0WVWNbtw 1wSeQu7ldy2QM3DaijMSkJVQ1z31J3sHhKeYWQCYpRpHX7i3LMGA3jIsb A==; X-CSE-ConnectionGUID: E6Z9uq6ERQ27KvdGZfRqCw== X-CSE-MsgGUID: Y3vFTJ/US6WPlNaiZsND9w== X-IronPort-AV: E=McAfee;i="6700,10204,11106"; a="15389281" X-IronPort-AV: E=Sophos;i="6.08,247,1712646000"; d="scan'208";a="15389281" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jun 2024 00:18:35 -0700 X-CSE-ConnectionGUID: 5Pklxi2YRDSm+1w2eNNTMA== X-CSE-MsgGUID: r+ioE52uQoa45eIRd6UupQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,247,1712646000"; d="scan'208";a="78910604" Received: from maurocar-mobl2.ger.corp.intel.com (HELO fedora..) ([10.245.245.51]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jun 2024 00:18:32 -0700 From: =?utf-8?q?Thomas_Hellstr=C3=B6m?= To: intel-xe@lists.freedesktop.org Cc: =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Somalapuram Amaranath , =?utf-8?q?Christian_?= =?utf-8?q?K=C3=B6nig?= , Matthew Brost , dri-devel@lists.freedesktop.org Subject: [PATCH v5 00/12] TTM shrinker helpers and xe buffer object shrinker Date: Tue, 18 Jun 2024 09:18:08 +0200 Message-ID: <20240618071820.130917-1-thomas.hellstrom@linux.intel.com> X-Mailer: git-send-email 2.44.0 MIME-Version: 1.0 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" This series implements TTM shrinker / eviction helpers and an xe bo shrinker. It builds on two previous series, *and obsoletes these*. First https://www.mail-archive.com/dri-devel@lists.freedesktop.org/msg484425.html Second the previous TTM shrinker series https://lore.kernel.org/linux-mm/b7491378-defd-4f1c-31e2-29e4c77e2d67@amd.com/T/ Where the comment about layering https://lore.kernel.org/linux-mm/b7491378-defd-4f1c-31e2-29e4c77e2d67@amd.com/T/#ma918844aa8a6efe8768fdcda0c6590d5c93850c9 now addressed, and this version also implements shmem objects for backup rather than direct swap-cache insertions, which was used in the previuos series. It turns out that with per-page backup / shrinking, shmem objects appears to work just as well as direct swap-cache insertions with the added benefit that was introduced in the previous TTM shrinker series to avoid running out of swap entries isn't really needed. Patch 1-4 implements restartable LRU list iteration. Patch 5 implements a LRU walker + resv locking helper Patch 6 moves TTM swapping over to the walker. Patch 7 moves TTM eviction over to the walker. Patch 8 could in theory be skipped but introduces a possibility to easily add or test multiple backup backends, like the direct swap-cache insertion or even files into fast dedicated nvme storage for for example. Patch 9 introduces helpers in the ttm_pool code for page-by-page shrinking and recovery. It avoids having to temporarily allocate a huge amount of memory to be able to shrink a buffer object. It also introduces the possibility to immediately write-back pages if needed, since that tends to be a bit delayed when left to kswapd. Patch 10 Adds a simple error injection to the above code to help increase test coverage. Patch 11 Implements an xe bo shrinker and a common helper in TTM for shrinking. Patch 12-21 are really a separate POC series, for introducing drm_exec locking in TTM. The patch touches both drm_exec and dma-buf and is for now marked as an RFC: Patch 12 Increases (removes) the XE_PL_TT watermark. v2: - Squash obsolete revision history in the patch commit messages. - Fix a couple of review comments by Christian - Don't store the mem_type in the TTM managers but in the resource cursor. - Rename introduced TTM *back_up* function names to *backup* - Add ttm pool recovery fault injection. - Shrinker xe kunit test - Various bugfixes v3: - Address some review comments from Matthew Brost and Christian König. - Use the restartable LRU walk for TTM swapping and eviction. - Provide a POC drm_exec locking implementation for exhaustive eviction. (Christian König). v4: - Remove the RFC exhaustive eviction part. While the path to exhaustive eviction is pretty clear and demonstrated in v3, there is still some drm_exec work that needs to be agreed and implemented. - Add shrinker power management. On some hw we need to wake when shrinking. - Fix the lru walker helper for -EALREADY errors. - Add drm/xe: Increase the XE_PL_TT watermark. v5: - Update also TTM kunit tests - Handle ghost- and zombie objects in the shrinker. - A couple of compile- and UAF fixes reported by Kernel Build Robot and Dan Carpenter. Cc: Somalapuram Amaranath Cc: Christian König Cc: Matthew Brost Cc: Thomas Hellström (12): drm/ttm: Allow TTM LRU list nodes of different types drm/ttm: Slightly clean up LRU list iteration drm/ttm: Use LRU hitches drm/ttm, drm/amdgpu, drm/xe: Consider hitch moves within bulk sublist moves drm/ttm: Provide a generic LRU walker helper drm/ttm: Use the LRU walker helper for swapping drm/ttm: Use the LRU walker for eviction drm/ttm: Add a virtual base class for graphics memory backup drm/ttm/pool: Provide a helper to shrink pages drm/ttm: Use fault-injection to test error paths drm/ttm, drm/xe: Add a shrinker for xe bos drm/xe: Increase the XE_PL_TT watermark drivers/gpu/drm/Kconfig | 10 + drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 4 + drivers/gpu/drm/ttm/Makefile | 2 +- drivers/gpu/drm/ttm/tests/ttm_bo_test.c | 6 +- drivers/gpu/drm/ttm/tests/ttm_resource_test.c | 2 +- drivers/gpu/drm/ttm/ttm_backup_shmem.c | 139 ++++++ drivers/gpu/drm/ttm/ttm_bo.c | 463 ++++++++---------- drivers/gpu/drm/ttm/ttm_bo_util.c | 212 ++++++++ drivers/gpu/drm/ttm/ttm_device.c | 29 +- drivers/gpu/drm/ttm/ttm_pool.c | 412 +++++++++++++++- drivers/gpu/drm/ttm/ttm_resource.c | 264 ++++++++-- drivers/gpu/drm/ttm/ttm_tt.c | 37 ++ drivers/gpu/drm/xe/Makefile | 1 + drivers/gpu/drm/xe/tests/xe_bo.c | 118 +++++ drivers/gpu/drm/xe/tests/xe_bo_test.c | 1 + drivers/gpu/drm/xe/tests/xe_bo_test.h | 1 + drivers/gpu/drm/xe/xe_bo.c | 155 +++++- drivers/gpu/drm/xe/xe_bo.h | 26 + drivers/gpu/drm/xe/xe_device.c | 8 + drivers/gpu/drm/xe/xe_device_types.h | 2 + drivers/gpu/drm/xe/xe_shrinker.c | 287 +++++++++++ drivers/gpu/drm/xe/xe_shrinker.h | 18 + drivers/gpu/drm/xe/xe_ttm_sys_mgr.c | 3 +- drivers/gpu/drm/xe/xe_vm.c | 4 + include/drm/ttm/ttm_backup.h | 136 +++++ include/drm/ttm/ttm_bo.h | 48 +- include/drm/ttm/ttm_pool.h | 5 + include/drm/ttm/ttm_resource.h | 99 +++- include/drm/ttm/ttm_tt.h | 20 + 29 files changed, 2133 insertions(+), 379 deletions(-) create mode 100644 drivers/gpu/drm/ttm/ttm_backup_shmem.c create mode 100644 drivers/gpu/drm/xe/xe_shrinker.c create mode 100644 drivers/gpu/drm/xe/xe_shrinker.h create mode 100644 include/drm/ttm/ttm_backup.h