From patchwork Wed Sep 27 21:29:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Adri=C3=A1n_Larumbe?= X-Patchwork-Id: 13401693 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 69CB8E80ABD for ; Wed, 27 Sep 2023 21:31:50 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0538010E02D; Wed, 27 Sep 2023 21:31:46 +0000 (UTC) Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by gabe.freedesktop.org (Postfix) with ESMTPS id 79AEE10E08F; Wed, 27 Sep 2023 21:31:44 +0000 (UTC) Received: from localhost.localdomain (unknown [IPv6:2a02:8010:65b5:0:1ac0:4dff:feee:236a]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: alarumbe) by madras.collabora.co.uk (Postfix) with ESMTPSA id EAC84660730F; Wed, 27 Sep 2023 22:31:42 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1695850303; bh=mvhqb0CR6dg+aT5ABbf9mgbY6p04NC3vkFwd67Q25UM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=n/WJOOWYA0jMTcEte7L0DvoL4Bx+GIHlQlk9KBfyfwV3YByqyYaBaMdJtO9oIBwDZ PcUO77y+bkA7Sojp7KAB+GytNVAgeCuq/m5v6eoCDgAmqEtdd+Cp41XIVvLO2WPMe1 3pBG8npwG2oq0yMitIYWSJ8uY9Uw0bNoIbb7zgFIX4LnsboxD+xIEFwc3TWfO/pbRM +RxQu46BYqHdUhQVu/DrFj+K5tkE+mWxc/KENCpxQQ9ln1uX75xGEWq/lma26pCTpE G50AmEUQ2Svu8JGrzKD7JB1LCGANS4wD9i8WOZq8Mr+T6k6ByDyNjlFW5VCLJI4arV pXlwoAtwKFfcg== From: =?utf-8?q?Adri=C3=A1n_Larumbe?= To: maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, daniel@ffwll.ch, robdclark@gmail.com, quic_abhinavk@quicinc.com, dmitry.baryshkov@linaro.org, sean@poorly.run, marijn.suijten@somainline.org, robh@kernel.org, steven.price@arm.com Subject: [PATCH v7 3/5] drm/panfrost: Add fdinfo support for memory stats Date: Wed, 27 Sep 2023 22:29:57 +0100 Message-ID: <20230927213133.1651169-4-adrian.larumbe@collabora.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230927213133.1651169-1-adrian.larumbe@collabora.com> References: <20230927213133.1651169-1-adrian.larumbe@collabora.com> 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: , Cc: tvrtko.ursulin@linux.intel.com, linux-arm-msm@vger.kernel.org, adrian.larumbe@collabora.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, healych@amazon.com, boris.brezillon@collabora.com, kernel@collabora.com, freedreno@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" A new DRM GEM object function is added so that drm_show_memory_stats can provide more accurate memory usage numbers. Ideally, in panfrost_gem_status, the BO's purgeable flag would be checked after locking the driver's shrinker mutex, but drm_show_memory_stats takes over the drm file's object handle database spinlock, so there's potential for a race condition here. Signed-off-by: Adrián Larumbe Reviewed-by: Boris Brezillon Reviewed-by: Steven Price Reviewed-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/panfrost/panfrost_drv.c | 2 ++ drivers/gpu/drm/panfrost/panfrost_gem.c | 14 ++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c index 97e5bc4a82c8..b834777b409b 100644 --- a/drivers/gpu/drm/panfrost/panfrost_drv.c +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c @@ -568,6 +568,8 @@ static void panfrost_show_fdinfo(struct drm_printer *p, struct drm_file *file) struct panfrost_device *pfdev = dev->dev_private; panfrost_gpu_show_fdinfo(pfdev, file->driver_priv, p); + + drm_show_memory_stats(p, file); } static const struct file_operations panfrost_drm_driver_fops = { diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panfrost/panfrost_gem.c index 3c812fbd126f..7d8f83d20539 100644 --- a/drivers/gpu/drm/panfrost/panfrost_gem.c +++ b/drivers/gpu/drm/panfrost/panfrost_gem.c @@ -195,6 +195,19 @@ static int panfrost_gem_pin(struct drm_gem_object *obj) return drm_gem_shmem_pin(&bo->base); } +static enum drm_gem_object_status panfrost_gem_status(struct drm_gem_object *obj) +{ + struct panfrost_gem_object *bo = to_panfrost_bo(obj); + enum drm_gem_object_status res = 0; + + res |= (bo->base.madv == PANFROST_MADV_DONTNEED) ? + DRM_GEM_OBJECT_PURGEABLE : 0; + + res |= (bo->base.pages) ? DRM_GEM_OBJECT_RESIDENT : 0; + + return res; +} + static const struct drm_gem_object_funcs panfrost_gem_funcs = { .free = panfrost_gem_free_object, .open = panfrost_gem_open, @@ -206,6 +219,7 @@ static const struct drm_gem_object_funcs panfrost_gem_funcs = { .vmap = drm_gem_shmem_object_vmap, .vunmap = drm_gem_shmem_object_vunmap, .mmap = drm_gem_shmem_object_mmap, + .status = panfrost_gem_status, .vm_ops = &drm_gem_shmem_vm_ops, };