diff options
Diffstat (limited to 'drivers/gpu/nvgpu/os/linux/vgpu/sysfs_vgpu.c')
-rw-r--r-- | drivers/gpu/nvgpu/os/linux/vgpu/sysfs_vgpu.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/gpu/nvgpu/os/linux/vgpu/sysfs_vgpu.c b/drivers/gpu/nvgpu/os/linux/vgpu/sysfs_vgpu.c new file mode 100644 index 00000000..57aad4b4 --- /dev/null +++ b/drivers/gpu/nvgpu/os/linux/vgpu/sysfs_vgpu.c | |||
@@ -0,0 +1,50 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved. | ||
3 | * | ||
4 | * This program is free software; you can redistribute it and/or modify it | ||
5 | * under the terms and conditions of the GNU General Public License, | ||
6 | * version 2, as published by the Free Software Foundation. | ||
7 | * | ||
8 | * This program is distributed in the hope it will be useful, but WITHOUT | ||
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | ||
11 | * more details. | ||
12 | * | ||
13 | * You should have received a copy of the GNU General Public License | ||
14 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
15 | */ | ||
16 | |||
17 | #include <linux/device.h> | ||
18 | #include <nvgpu/vgpu/vgpu.h> | ||
19 | |||
20 | #include "os/linux/platform_gk20a.h" | ||
21 | |||
22 | static ssize_t vgpu_load_show(struct device *dev, | ||
23 | struct device_attribute *attr, | ||
24 | char *buf) | ||
25 | { | ||
26 | struct gk20a *g = get_gk20a(dev); | ||
27 | struct tegra_vgpu_cmd_msg msg = {0}; | ||
28 | struct tegra_vgpu_gpu_load_params *p = &msg.params.gpu_load; | ||
29 | int err; | ||
30 | |||
31 | msg.cmd = TEGRA_VGPU_CMD_GET_GPU_LOAD; | ||
32 | msg.handle = vgpu_get_handle(g); | ||
33 | err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg)); | ||
34 | if (err) | ||
35 | return err; | ||
36 | |||
37 | return snprintf(buf, PAGE_SIZE, "%u\n", p->load); | ||
38 | } | ||
39 | static DEVICE_ATTR(load, S_IRUGO, vgpu_load_show, NULL); | ||
40 | |||
41 | void vgpu_create_sysfs(struct device *dev) | ||
42 | { | ||
43 | if (device_create_file(dev, &dev_attr_load)) | ||
44 | dev_err(dev, "Failed to create vgpu sysfs attributes!\n"); | ||
45 | } | ||
46 | |||
47 | void vgpu_remove_sysfs(struct device *dev) | ||
48 | { | ||
49 | device_remove_file(dev, &dev_attr_load); | ||
50 | } | ||