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f1dc3fd2fb
The current debugfs code is completely specific to FIFO's kickoff profiler. But exposing these debugfs nodes is really a perfectly generic operation to any given profiler. Therefore add a generic debugfs interface for exposing profilers. Any code that implements a profiler can now use a single function call to export a profiler to the GPU debugfs area. JIRA NVGPU-5606 Change-Id: I67a5bd9998fcfac94678e465442b9a38ab7e7612 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2358382 Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
115 lines
3.0 KiB
C
115 lines
3.0 KiB
C
/*
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* Copyright (C) 2020 NVIDIA Corporation. All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <nvgpu/swprofile.h>
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#include <nvgpu/debug.h>
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static int nvgpu_debugfs_swprofile_enable(void *data, u64 val)
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{
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struct nvgpu_swprofiler *p = (struct nvgpu_swprofiler *) data;
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if (val == 0) {
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nvgpu_swprofile_close(p);
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return 0;
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} else {
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return nvgpu_swprofile_open(p->g, p);
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}
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}
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DEFINE_SIMPLE_ATTRIBUTE(
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nvgpu_debugfs_swprofile_enable_debugfs_fops,
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NULL,
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nvgpu_debugfs_swprofile_enable,
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"%llu\n"
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);
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static void nvgpu_debugfs_write_to_seqfile_no_nl(void *ctx, const char *str)
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{
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seq_printf((struct seq_file *)ctx, str);
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}
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static int nvgpu_debugfs_swprofile_stats(struct seq_file *s, void *unused)
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{
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struct nvgpu_swprofiler *p = s->private;
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struct nvgpu_debug_context o = {
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.fn = nvgpu_debugfs_write_to_seqfile_no_nl,
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.ctx = s,
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};
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nvgpu_swprofile_print_ranges(p->g, p, &o);
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return 0;
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}
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static int nvgpu_debugfs_swprofile_stats_open(struct inode *inode, struct file *file)
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{
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return single_open(file, nvgpu_debugfs_swprofile_stats, inode->i_private);
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}
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static const struct file_operations nvgpu_debugfs_swprofile_stats_debugfs_fops = {
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.open = nvgpu_debugfs_swprofile_stats_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static int nvgpu_debugfs_swprofile_raw_data(struct seq_file *s, void *unused)
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{
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struct nvgpu_swprofiler *p = s->private;
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struct nvgpu_debug_context o = {
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.fn = nvgpu_debugfs_write_to_seqfile_no_nl,
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.ctx = s,
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};
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nvgpu_swprofile_print_raw_data(p->g, p, &o);
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return 0;
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}
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static int nvgpu_debugfs_swprofile_raw_data_open(struct inode *inode, struct file *file)
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{
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return single_open(file, nvgpu_debugfs_swprofile_raw_data, inode->i_private);
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}
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static const struct file_operations nvgpu_debugfs_swprofile_raw_data_debugfs_fops = {
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.open = nvgpu_debugfs_swprofile_raw_data_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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void nvgpu_debugfs_swprofile_init(struct gk20a *g,
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struct dentry *root,
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struct nvgpu_swprofiler *p,
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const char *name)
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{
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struct dentry *swprofile_root;
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swprofile_root = debugfs_create_dir(name, root);
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if (IS_ERR_OR_NULL(swprofile_root))
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return;
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debugfs_create_file("enable", 0600, swprofile_root, p,
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&nvgpu_debugfs_swprofile_enable_debugfs_fops);
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debugfs_create_file("percentiles", 0600, swprofile_root, p,
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&nvgpu_debugfs_swprofile_stats_debugfs_fops);
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debugfs_create_file("raw_data", 0600, swprofile_root, p,
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&nvgpu_debugfs_swprofile_raw_data_debugfs_fops);
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}
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