From patchwork Mon Apr 26 23:53:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 427641 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 DD8D0C433ED for ; Mon, 26 Apr 2021 23:50:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B63A261103 for ; Mon, 26 Apr 2021 23:50:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234700AbhDZXul (ORCPT ); Mon, 26 Apr 2021 19:50:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58398 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232022AbhDZXul (ORCPT ); Mon, 26 Apr 2021 19:50:41 -0400 Received: from mail-pf1-x42c.google.com (mail-pf1-x42c.google.com [IPv6:2607:f8b0:4864:20::42c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0872FC061574; Mon, 26 Apr 2021 16:49:59 -0700 (PDT) Received: by mail-pf1-x42c.google.com with SMTP id w6so25571908pfc.8; Mon, 26 Apr 2021 16:49:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=4Kj0SXA9vsOtoPJRmbl9kO6maA5cV9sB7CgScAwXMzI=; b=PFvUwvqW69maGIZ5IE53RvvUM+/kvn8XSEdtYOjbhbPlzT0Riuw8w7Ts1JFVxIDqpQ hkN+WE+9gKJKaxtoiRgHMpvs9sljBPxeoFTD8nkotwJ/goVrvSwQUvwMUdX0MB/hLWnu MHDlhhg8N/JbcQAJZ2Db5qaoK6tdTEf1BouwU/gi3Jg6UZCryIRDm9+uZZRvWjQ+QUb2 +OMRwFtjC+RQpFVbk6gyUexFskpIjmkRZODzFO+vpHsN+PWjGIOYxdVwKcYgAWrvOR92 EyGQlT0paeIxMRnpQ59hRd6/qHmCbR/KDJxaMA02Q6ibFopq2uKIiC6xQzJoLcSwHQ+0 bIdw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=4Kj0SXA9vsOtoPJRmbl9kO6maA5cV9sB7CgScAwXMzI=; b=qEzWEhmda9UHg/Ot595huQAWu/MH2ieyK2OdLNZtxjj219A/SNzyKYNDiCt8uh94/i 12HBXr2MmOwwZmSSoFtTCVbTxPvBjrNsBuBIWP5kmZEyXKK/m4DzxWcSahTKMOi1UCCc rpF2W+SwZtiuy61pBEi1wEW0mpwG6vAm8Lz+B6qr+uoeyAEfLxJnhRFcW4hsOWfb+gX9 ZnFc+3zNA6Ak1cihOT8VTm3pKaWm0BYlBGIWzIvQvQCPuPi438+vY00VfW25YPHtQR9U BPZyT5JSnGAZHioa8N3rNebQSAKWdyuaiQXqCP8qAwWLH6WBVtqNvU8AyoOGb7MWrg3M fMPA== X-Gm-Message-State: AOAM532+hbRN7STcip4CfnF8QteAnc3u/bI4BiVl8sBaFc6XPCz7Mv0W r40nmLXo7ewWnlDfc37UNRM= X-Google-Smtp-Source: ABdhPJzlJCZjMw1AMpMrqCCtVcFtp5ga8BJTa2+1W/jHgDQCNHWITvuZXAkIlz5HiSTjiD6+Kb+v/A== X-Received: by 2002:a63:eb46:: with SMTP id b6mr4060320pgk.199.1619480998570; Mon, 26 Apr 2021 16:49:58 -0700 (PDT) Received: from localhost ([2601:1c0:5200:a6:307:a401:7b76:c6e5]) by smtp.gmail.com with ESMTPSA id w189sm646315pfc.31.2021.04.26.16.49.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Apr 2021 16:49:57 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org Cc: Rob Clark , Rob Clark , Sean Paul , David Airlie , Daniel Vetter , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6ni?= =?utf-8?q?g?= , linux-arm-msm@vger.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU), freedreno@lists.freedesktop.org (open list:DRM DRIVER FOR MSM ADRENO GPU), linux-kernel@vger.kernel.org (open list), linux-media@vger.kernel.org (open list:DMA BUFFER SHARING FRAMEWORK), linaro-mm-sig@lists.linaro.org (moderated list:DMA BUFFER SHARING FRAMEWORK) Subject: [PATCH] drm/msm: Do not unpin/evict exported dma-buf's Date: Mon, 26 Apr 2021 16:53:25 -0700 Message-Id: <20210426235326.1230125-1-robdclark@gmail.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Rob Clark Our initial logic for excluding dma-bufs was not quite right. In particular we want msm_gem_get/put_pages() path used for exported dma-bufs to increment/decrement the pin-count. Also, in case the importer is vmap'ing the dma-buf, we need to be sure to update the object's status, because it is now no longer potentially evictable. Fixes: 63f17ef83428 drm/msm: Support evicting GEM objects to swap Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_gem.c | 16 +++++++++++++++- drivers/gpu/drm/msm/msm_gem.h | 4 ++-- 2 files changed, 17 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index 09ef4ec6eb34..17f85d2f23ab 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -190,13 +190,25 @@ struct page **msm_gem_get_pages(struct drm_gem_object *obj) } p = get_pages(obj); + + if (!IS_ERR(p)) { + msm_obj->pin_count++; + update_inactive(msm_obj); + } + msm_gem_unlock(obj); return p; } void msm_gem_put_pages(struct drm_gem_object *obj) { - /* when we start tracking the pin count, then do something here */ + struct msm_gem_object *msm_obj = to_msm_bo(obj); + + msm_gem_lock(obj); + msm_obj->pin_count--; + GEM_WARN_ON(msm_obj->pin_count < 0); + update_inactive(msm_obj); + msm_gem_unlock(obj); } int msm_gem_mmap_obj(struct drm_gem_object *obj, @@ -646,6 +658,8 @@ static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) ret = -ENOMEM; goto fail; } + + update_inactive(msm_obj); } return msm_obj->vaddr; diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h index 1b519fcd8418..66fb40b87122 100644 --- a/drivers/gpu/drm/msm/msm_gem.h +++ b/drivers/gpu/drm/msm/msm_gem.h @@ -228,7 +228,7 @@ static inline bool is_active(struct msm_gem_object *msm_obj) /* imported/exported objects are not purgeable: */ static inline bool is_unpurgeable(struct msm_gem_object *msm_obj) { - return msm_obj->base.dma_buf && msm_obj->base.import_attach; + return msm_obj->base.import_attach || msm_obj->pin_count; } static inline bool is_purgeable(struct msm_gem_object *msm_obj) @@ -278,7 +278,7 @@ static inline void mark_unpurgeable(struct msm_gem_object *msm_obj) static inline bool is_unevictable(struct msm_gem_object *msm_obj) { - return is_unpurgeable(msm_obj) || msm_obj->pin_count || msm_obj->vaddr; + return is_unpurgeable(msm_obj) || msm_obj->vaddr; } static inline void mark_evictable(struct msm_gem_object *msm_obj)