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Message-ID: <20240627154754.74828-5-maarten.lankhorst@linux.intel.com>
Date: Thu, 27 Jun 2024 17:47:23 +0200
From: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
To: intel-xe@...ts.freedesktop.org,
linux-kernel@...r.kernel.org,
dri-devel@...ts.freedesktop.org,
Tejun Heo <tj@...nel.org>,
Zefan Li <lizefan.x@...edance.com>,
Johannes Weiner <hannes@...xchg.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Lucas De Marchi <lucas.demarchi@...el.com>,
Thomas Hellström <thomas.hellstrom@...ux.intel.com>,
Rodrigo Vivi <rodrigo.vivi@...el.com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>
Cc: Friedrich Vock <friedrich.vock@....de>,
cgroups@...r.kernel.org,
linux-mm@...ck.org
Subject: [RFC PATCH 4/6] drm/xe: Implement cgroup for vram
Add vram based cgroup eviction to Xe.
Most hardware with VRAM uses TTM for its management, and can be
similarly trivially enabled.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
---
drivers/gpu/drm/xe/xe_device.c | 4 ++++
drivers/gpu/drm/xe/xe_device_types.h | 4 ++++
drivers/gpu/drm/xe/xe_ttm_vram_mgr.c | 10 ++++++++++
3 files changed, 18 insertions(+)
diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c
index 5ef9b50a20d0..6e630d67b13a 100644
--- a/drivers/gpu/drm/xe/xe_device.c
+++ b/drivers/gpu/drm/xe/xe_device.c
@@ -616,6 +616,10 @@ int xe_device_probe(struct xe_device *xe)
/* Allocate and map stolen after potential VRAM resize */
xe_ttm_stolen_mgr_init(xe);
+ err = drmmcg_register_device(&xe->drm, &xe->cg);
+ if (err)
+ goto err_irq_shutdown;
+
/*
* Now that GT is initialized (TTM in particular),
* we can try to init display, and inherit the initial fb.
diff --git a/drivers/gpu/drm/xe/xe_device_types.h b/drivers/gpu/drm/xe/xe_device_types.h
index 2e62450d86e1..6b60837d9090 100644
--- a/drivers/gpu/drm/xe/xe_device_types.h
+++ b/drivers/gpu/drm/xe/xe_device_types.h
@@ -7,6 +7,7 @@
#define _XE_DEVICE_TYPES_H_
#include <linux/pci.h>
+#include <linux/cgroup_drm.h>
#include <drm/drm_device.h>
#include <drm/drm_file.h>
@@ -216,6 +217,9 @@ struct xe_device {
/** @devcoredump: device coredump */
struct xe_devcoredump devcoredump;
+ /** @cg: drm cgroup bookkeeping */
+ struct drmcgroup_device cg;
+
/** @info: device info */
struct intel_device_info {
/** @info.graphics_name: graphics IP name */
diff --git a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c
index fe3779fdba2c..9a625b69fc52 100644
--- a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c
+++ b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c
@@ -339,6 +339,16 @@ int __xe_ttm_vram_mgr_init(struct xe_device *xe, struct xe_ttm_vram_mgr *mgr,
struct ttm_resource_manager *man = &mgr->manager;
int err;
+ if (mem_type != XE_PL_STOLEN) {
+ int cgregion = xe->cg.num_regions++;
+
+ xe->cg.regions[cgregion].size = size;
+ xe->cg.regions[cgregion].name =
+ mem_type == XE_PL_VRAM0 ? "vram0" : "vram1";
+ man->cgdev = &xe->cg;
+ man->cgidx = cgregion;
+ }
+
man->func = &xe_ttm_vram_mgr_func;
mgr->mem_type = mem_type;
mutex_init(&mgr->lock);
--
2.45.2
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