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