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 1A612F89251 for ; Tue, 21 Apr 2026 10:46:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7FE2210E184; Tue, 21 Apr 2026 10:46:08 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=collabora.com header.i=nicolas.frattaroli@collabora.com header.b="dmtEDeFe"; dkim-atps=neutral Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) by gabe.freedesktop.org (Postfix) with ESMTPS id B75B510E184 for ; Tue, 21 Apr 2026 10:46:06 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; t=1776768354; cv=none; d=zohomail.com; s=zohoarc; b=LcG4ZPvLJGLVoCSjkWKkmdIqixcPsGYKuzz3LKZoeop3Czq6nL+8Ij61SjCoz5hSCCxmeMEn+pgK4CqZ45iQURisI6SNpOZSuBctCFiysuzm3Z4j83XyvnjrBOfIqjd1Ir0aPyuliVcYMYXzTyhEVL6r3GP+5nf/JVRH1q4eHAM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1776768354; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=MqNz68fIchot62Kb5x/KPq5UFBE2Y0IMEav67Kx8nVI=; b=iXQm5pI7HE56hyGGJX84jQ69ozVAf/e/7Oae7KfYW2jK5CxFzXXeJf2n3vx3HLhnIKYF119q0EXBFDR/s6Msc+7y59f1T8/qNeP4qafdXMQfWNq4wntvzudyvA0oqgEm5evlBIz88YGVDMgVAK1FPgX56SPZO0+FOwocqbkE7LE= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=nicolas.frattaroli@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1776768354; s=zohomail; d=collabora.com; i=nicolas.frattaroli@collabora.com; h=From:From:Date:Date:Subject:Subject:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Message-Id:References:In-Reply-To:To:To:Cc:Cc:Reply-To; bh=MqNz68fIchot62Kb5x/KPq5UFBE2Y0IMEav67Kx8nVI=; b=dmtEDeFei+JTifGXOE806m7aKS9FsBxP9Q/8UTeSOWmviElZYVNyaDhBXKlTKy0S G7iaiNciZfqhoomE8+DfY1UchmM6XX1zOF0xqZNWtK0tg7SQts5SETYAl6qL3pkYcDg AqL97rfqNY8YaU/P1XZS158zV4kRhaH+bxvjLuhk= Received: by mx.zohomail.com with SMTPS id 1776768352411176.5916881702317; Tue, 21 Apr 2026 03:45:52 -0700 (PDT) From: Nicolas Frattaroli Date: Tue, 21 Apr 2026 12:45:13 +0200 Subject: [PATCH v2 1/3] drm/fdinfo: Add "evicted" memory accounting MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260421-panthor-bo-reclaim-observability-v2-1-c9135eedfb6f@collabora.com> References: <20260421-panthor-bo-reclaim-observability-v2-0-c9135eedfb6f@collabora.com> In-Reply-To: <20260421-panthor-bo-reclaim-observability-v2-0-c9135eedfb6f@collabora.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Boris Brezillon , Steven Price , Liviu Dudau Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, kernel@collabora.com, Nicolas Frattaroli X-Mailer: b4 0.15.2 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" Currently, there's no way to know for certain how much GPU memory was swapped out. The difference between total and resident memory would include newly allocated pages, which are not resident, but also aren't swapped out. Add a new drm_gem_object_status so drivers can signal when an object has been evicted to swap, and add a new "evicted" counter to drm_memory_stats. Due to how the supported_flags bitmask is determined, the "evicted" count won't be printed to fdinfo if there's no swapped out pages. Signed-off-by: Nicolas Frattaroli --- drivers/gpu/drm/drm_file.c | 8 ++++++++ include/drm/drm_file.h | 2 ++ include/drm/drm_gem.h | 2 ++ 3 files changed, 12 insertions(+) diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c index ec820686b302..5078172976c0 100644 --- a/drivers/gpu/drm/drm_file.c +++ b/drivers/gpu/drm/drm_file.c @@ -868,6 +868,7 @@ int drm_memory_stats_is_zero(const struct drm_memory_stats *stats) stats->private == 0 && stats->resident == 0 && stats->purgeable == 0 && + stats->evicted == 0 && stats->active == 0); } EXPORT_SYMBOL(drm_memory_stats_is_zero); @@ -901,6 +902,10 @@ void drm_print_memory_stats(struct drm_printer *p, if (supported_status & DRM_GEM_OBJECT_PURGEABLE) drm_fdinfo_print_size(p, prefix, "purgeable", region, stats->purgeable); + + if (supported_status & DRM_GEM_OBJECT_EVICTED) + drm_fdinfo_print_size(p, prefix, "evicted", region, + stats->evicted); } EXPORT_SYMBOL(drm_print_memory_stats); @@ -954,6 +959,9 @@ void drm_show_memory_stats(struct drm_printer *p, struct drm_file *file) if (s & DRM_GEM_OBJECT_PURGEABLE) status.purgeable += add_size; + + if (s & DRM_GEM_OBJECT_EVICTED) + status.evicted += add_size; } spin_unlock(&file->table_lock); diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h index 6ee70ad65e1f..213dfecac342 100644 --- a/include/drm/drm_file.h +++ b/include/drm/drm_file.h @@ -500,6 +500,7 @@ void drm_send_event_timestamp_locked(struct drm_device *dev, * @resident: Total size of GEM objects backing pages * @purgeable: Total size of GEM objects that can be purged (resident and not active) * @active: Total size of GEM objects active on one or more engines + * @evicted: Total size of GEM objects that have been evicted to swap * * Used by drm_print_memory_stats() */ @@ -509,6 +510,7 @@ struct drm_memory_stats { u64 resident; u64 purgeable; u64 active; + u64 evicted; }; enum drm_gem_object_status; diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h index 86f5846154f7..b42ea2e582cf 100644 --- a/include/drm/drm_gem.h +++ b/include/drm/drm_gem.h @@ -53,6 +53,7 @@ struct drm_gem_object; * @DRM_GEM_OBJECT_RESIDENT: object is resident in memory (ie. not unpinned) * @DRM_GEM_OBJECT_PURGEABLE: object marked as purgeable by userspace * @DRM_GEM_OBJECT_ACTIVE: object is currently used by an active submission + * @DRM_GEM_OBJECT_EVICTED: object is evicted to swap * * Bitmask of status used for fdinfo memory stats, see &drm_gem_object_funcs.status * and drm_show_fdinfo(). Note that an object can report DRM_GEM_OBJECT_PURGEABLE @@ -67,6 +68,7 @@ enum drm_gem_object_status { DRM_GEM_OBJECT_RESIDENT = BIT(0), DRM_GEM_OBJECT_PURGEABLE = BIT(1), DRM_GEM_OBJECT_ACTIVE = BIT(2), + DRM_GEM_OBJECT_EVICTED = BIT(3), }; /** -- 2.53.0