1 | // SPDX-License-Identifier: MIT |
2 | /* |
3 | * Copyright © 2020 Intel Corporation |
4 | */ |
5 | |
6 | #include <linux/kernel.h> |
7 | #include <linux/slab.h> |
8 | #include <linux/types.h> |
9 | |
10 | #include <uapi/drm/i915_drm.h> |
11 | |
12 | #include <drm/drm_print.h> |
13 | |
14 | #include "gem/i915_gem_context.h" |
15 | #include "i915_drm_client.h" |
16 | #include "i915_file_private.h" |
17 | #include "i915_gem.h" |
18 | #include "i915_utils.h" |
19 | |
20 | struct i915_drm_client *i915_drm_client_alloc(void) |
21 | { |
22 | struct i915_drm_client *client; |
23 | |
24 | client = kzalloc(size: sizeof(*client), GFP_KERNEL); |
25 | if (!client) |
26 | return NULL; |
27 | |
28 | kref_init(kref: &client->kref); |
29 | spin_lock_init(&client->ctx_lock); |
30 | INIT_LIST_HEAD(list: &client->ctx_list); |
31 | |
32 | return client; |
33 | } |
34 | |
35 | void __i915_drm_client_free(struct kref *kref) |
36 | { |
37 | struct i915_drm_client *client = |
38 | container_of(kref, typeof(*client), kref); |
39 | |
40 | kfree(objp: client); |
41 | } |
42 | |
43 | #ifdef CONFIG_PROC_FS |
44 | static const char * const uabi_class_names[] = { |
45 | [I915_ENGINE_CLASS_RENDER] = "render" , |
46 | [I915_ENGINE_CLASS_COPY] = "copy" , |
47 | [I915_ENGINE_CLASS_VIDEO] = "video" , |
48 | [I915_ENGINE_CLASS_VIDEO_ENHANCE] = "video-enhance" , |
49 | [I915_ENGINE_CLASS_COMPUTE] = "compute" , |
50 | }; |
51 | |
52 | static u64 busy_add(struct i915_gem_context *ctx, unsigned int class) |
53 | { |
54 | struct i915_gem_engines_iter it; |
55 | struct intel_context *ce; |
56 | u64 total = 0; |
57 | |
58 | for_each_gem_engine(ce, rcu_dereference(ctx->engines), it) { |
59 | if (ce->engine->uabi_class != class) |
60 | continue; |
61 | |
62 | total += intel_context_get_total_runtime_ns(ce); |
63 | } |
64 | |
65 | return total; |
66 | } |
67 | |
68 | static void |
69 | show_client_class(struct drm_printer *p, |
70 | struct drm_i915_private *i915, |
71 | struct i915_drm_client *client, |
72 | unsigned int class) |
73 | { |
74 | const unsigned int capacity = i915->engine_uabi_class_count[class]; |
75 | u64 total = atomic64_read(v: &client->past_runtime[class]); |
76 | struct i915_gem_context *ctx; |
77 | |
78 | rcu_read_lock(); |
79 | list_for_each_entry_rcu(ctx, &client->ctx_list, client_link) |
80 | total += busy_add(ctx, class); |
81 | rcu_read_unlock(); |
82 | |
83 | if (capacity) |
84 | drm_printf(p, f: "drm-engine-%s:\t%llu ns\n" , |
85 | uabi_class_names[class], total); |
86 | |
87 | if (capacity > 1) |
88 | drm_printf(p, f: "drm-engine-capacity-%s:\t%u\n" , |
89 | uabi_class_names[class], |
90 | capacity); |
91 | } |
92 | |
93 | void i915_drm_client_fdinfo(struct drm_printer *p, struct drm_file *file) |
94 | { |
95 | struct drm_i915_file_private *file_priv = file->driver_priv; |
96 | struct drm_i915_private *i915 = file_priv->i915; |
97 | unsigned int i; |
98 | |
99 | /* |
100 | * ****************************************************************** |
101 | * For text output format description please see drm-usage-stats.rst! |
102 | * ****************************************************************** |
103 | */ |
104 | |
105 | if (GRAPHICS_VER(i915) < 8) |
106 | return; |
107 | |
108 | for (i = 0; i < ARRAY_SIZE(uabi_class_names); i++) |
109 | show_client_class(p, i915, client: file_priv->client, class: i); |
110 | } |
111 | #endif |
112 | |