nv-tegra-mirror/linux-nvgpu
1
0
Fork 0
mirror of git://nv-tegra.nvidia.com/linux-nvgpu.git synced 2025-12-22 09:12:24 +03:00
Code Issues Packages Projects Releases Wiki Activity

gpu: nvgpu: create device/context profiler dev nodes

Browse Source 
Create new dev nodes for device and context profilers. Example of dev
nodes on iGPU
/dev/nvhost-prof-dev-gpu - device scope profiler
/dev/nvhost-prof-ctx-gpu - context scope profiler

Add below APIs to open/close above dev nodes :
nvgpu_prof_dev_fops_open()
nvgpu_prof_ctx_fops_open()
nvgpu_prof_fops_release()

Add common API nvgpu_prof_fops_ioctl() to handle IOCTL call on these
dev nodes. Add IOCTL NVGPU_PROFILER_IOCTL_BIND_CONTEXT to bind the TSG
to profiler objects.

Add nvgpu_tsg_get_from_file() to retrieve TSG struct pointer from
file descriptor. Also store profiler object pointer into TSG struct.

Enable NVGPU_SUPPORT_PROFILER_V2_DEVICE capability on gv11b and tu104.
Note that this is not yet enabled for vGPU.
Keep NVGPU_SUPPORT_PROFILER_V2_CONTEXT capabiity disabled since this
will take longer to support.

Add new IOCTL NVGPU_PROFILER_IOCTL_UNBIND_CONTEXT so that userspace can
explicitly unbind the context and release the resources before closing
the profiler descriptor.

Add context_init flag to profiler object for book keeping.

Bug 2510974
Jira NVGPU-5360

Change-Id: Ie07e0cfd5a9da9d80008f79c955c7ef93b4bc60f
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2384354
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Deepak Nibade
2020-05-13 11:32:16 +05:30
committed by Alex Waterman
parent fb95b7efa7
commit 969b901999
16 changed files with 437 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

49
drivers/gpu/nvgpu/os/linux/ioctl.c
View File

@@ -1,7 +1,7 @@
/*
* NVGPU IOCTLs
*
* Copyright (c) 2011-2019, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2011-2020, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@@ -26,6 +26,7 @@
#include "ioctl_as.h"
#include "ioctl_tsg.h"
#include "ioctl_dbg.h"
#include "ioctl_prof.h"
#include "module.h"
#include "os_linux.h"
#include "fecs_trace_linux.h"
@@ -91,7 +92,27 @@ static const struct file_operations gk20a_prof_ops = {
#endif
};
static const struct file_operations gk20a_tsg_ops = {
static const struct file_operations gk20a_prof_dev_ops = {
.owner = THIS_MODULE,
.release = nvgpu_prof_fops_release,
.open = nvgpu_prof_dev_fops_open,
.unlocked_ioctl = nvgpu_prof_fops_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = nvgpu_prof_fops_ioctl,
#endif
};
static const struct file_operations gk20a_prof_ctx_ops = {
.owner = THIS_MODULE,
.release = nvgpu_prof_fops_release,
.open = nvgpu_prof_ctx_fops_open,
.unlocked_ioctl = nvgpu_prof_fops_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = nvgpu_prof_fops_ioctl,
#endif
};
const struct file_operations gk20a_tsg_ops = {
.owner = THIS_MODULE,
.release = nvgpu_ioctl_tsg_dev_release,
.open = nvgpu_ioctl_tsg_dev_open,
@@ -195,6 +216,16 @@ void gk20a_user_deinit(struct device *dev, struct class *class)
cdev_del(&l->prof.cdev);
}
if (l->prof_dev.node) {
device_destroy(class, l->prof_dev.cdev.dev);
cdev_del(&l->prof_dev.cdev);
}
if (l->prof_ctx.node) {
device_destroy(class, l->prof_ctx.cdev.dev);
cdev_del(&l->prof_ctx.cdev);
}
if (l->tsg.node) {
device_destroy(class, l->tsg.cdev.dev);
cdev_del(&l->tsg.cdev);
@@ -264,6 +295,20 @@ int gk20a_user_init(struct device *dev, const char *interface_name,
if (err)
goto fail;
err = gk20a_create_device(dev, devno++, interface_name, "-prof-dev",
&l->prof_dev.cdev, &l->prof_dev.node,
&gk20a_prof_dev_ops,
class);
if (err)
goto fail;
err = gk20a_create_device(dev, devno++, interface_name, "-prof-ctx",
&l->prof_ctx.cdev, &l->prof_ctx.node,
&gk20a_prof_ctx_ops,
class);
if (err)
goto fail;
err = gk20a_create_device(dev, devno++, interface_name, "-tsg",
&l->tsg.cdev, &l->tsg.node,
&gk20a_tsg_ops,