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/*
* Copyright (c) 2015-2016, 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,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#include <linux/smp.h>
#include <asm/smp_plat.h>
#include <asm/traps.h>
#include <linux/debugfs.h>
#include <linux/cpu.h>
#include <linux/module.h>
#include <linux/platform/tegra/tegra18_cpu_map.h>
#include <linux/of_platform.h>
#include <linux/tegra-cpu.h>
static struct dentry *debugfs_dir;
static int __init tegra18_cpu_debugfs_init(void)
{
struct dentry *denver_dir;
struct dentry *a57_dir;
char dest[128];
char name[8];
int cpu;
debugfs_dir = debugfs_create_dir("cpu_topology", NULL);
/* Save off the debugfs dir so that it can be removed */
denver_dir = debugfs_create_dir("denver", debugfs_dir);
a57_dir = debugfs_create_dir("a57", debugfs_dir);
/* Create symlinks to the logical CPUs based on the cluster type and
the physical CPU number. */
for_each_possible_cpu(cpu) {
snprintf(dest, sizeof(dest),
"/sys/devices/system/cpu/cpu%d", cpu);
snprintf(name, sizeof(name),
"cpu%d", tegra18_logical_to_cpu(cpu));
if (tegra18_is_cpu_denver(cpu))
debugfs_create_symlink(name, denver_dir, dest);
else
debugfs_create_symlink(name, a57_dir, dest);
}
return 0;
}
module_init(tegra18_cpu_debugfs_init);
static void tegra18_cpu_debugfs_exit(void)
{
debugfs_remove_recursive(debugfs_dir);
}
module_exit(tegra18_cpu_debugfs_exit);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Tegra T18x CPU Topology debugfs");
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