// SPDX-License-Identifier: GPL-2.0 #include <linux/debugfs.h> #include <asm/apic.h>#include <asm/processor.h> #include "cpu.h" static int cpu_debug_show(struct seq_file *m, void *p){	unsigned long cpu = (unsigned long)m->private;	struct cpuinfo_x86 *c = per_cpu_ptr(&cpu_info, cpu); 	seq_printf(m, "online:              %d\n", cpu_online(cpu));	if (!c->initialized)		return 0; 	seq_printf(m, "initial_apicid:      %x\n", c->topo.initial_apicid);	seq_printf(m, "apicid:              %x\n", c->topo.apicid);	seq_printf(m, "pkg_id:              %u\n", c->topo.pkg_id);	seq_printf(m, "die_id:              %u\n", c->topo.die_id);	seq_printf(m, "cu_id:               %u\n", c->topo.cu_id);	seq_printf(m, "core_id:             %u\n", c->topo.core_id);	seq_printf(m, "cpu_type:            %s\n", get_topology_cpu_type_name(c));	seq_printf(m, "logical_pkg_id:      %u\n", c->topo.logical_pkg_id);	seq_printf(m, "logical_die_id:      %u\n", c->topo.logical_die_id);	seq_printf(m, "llc_id:              %u\n", c->topo.llc_id);	seq_printf(m, "l2c_id:              %u\n", c->topo.l2c_id);	seq_printf(m, "amd_node_id:         %u\n", c->topo.amd_node_id);	seq_printf(m, "amd_nodes_per_pkg:   %u\n", topology_amd_nodes_per_pkg());	seq_printf(m, "num_threads:         %u\n", __num_threads_per_package);	seq_printf(m, "num_cores:           %u\n", __num_cores_per_package);	seq_printf(m, "max_dies_per_pkg:    %u\n", __max_dies_per_package);	seq_printf(m, "max_threads_per_core:%u\n", __max_threads_per_core);	return 0;} static int cpu_debug_open(struct inode *inode, struct file *file){	return single_open(file, cpu_debug_show, inode->i_private);} static const struct file_operations dfs_cpu_ops = {	.open		= cpu_debug_open,	.read		= seq_read,	.llseek		= seq_lseek,	.release	= single_release,}; static int dom_debug_show(struct seq_file *m, void *p){	static const char *domain_names[TOPO_MAX_DOMAIN] = {		[TOPO_SMT_DOMAIN]	= "Thread",		[TOPO_CORE_DOMAIN]	= "Core",		[TOPO_MODULE_DOMAIN]	= "Module",		[TOPO_TILE_DOMAIN]	= "Tile",		[TOPO_DIE_DOMAIN]	= "Die",		[TOPO_DIEGRP_DOMAIN]	= "DieGrp",		[TOPO_PKG_DOMAIN]	= "Package",	};	unsigned int dom, nthreads = 1; 	for (dom = 0; dom < TOPO_MAX_DOMAIN; dom++) {		nthreads *= x86_topo_system.dom_size[dom];		seq_printf(m, "domain: %-10s shift: %u dom_size: %5u max_threads: %5u\n",			   domain_names[dom], x86_topo_system.dom_shifts[dom],			   x86_topo_system.dom_size[dom], nthreads);	}	return 0;} static int dom_debug_open(struct inode *inode, struct file *file){	return single_open(file, dom_debug_show, inode->i_private);} static const struct file_operations dfs_dom_ops = {	.open		= dom_debug_open,	.read		= seq_read,	.llseek		= seq_lseek,	.release	= single_release,}; static __init int cpu_init_debugfs(void){	struct dentry *dir, *base = debugfs_create_dir("topo", arch_debugfs_dir);	unsigned long id;	char name[24]; 	debugfs_create_file("domains", 0444, base, NULL, &dfs_dom_ops); 	dir = debugfs_create_dir("cpus", base);	for_each_possible_cpu(id) {		sprintf(name, "%lu", id);		debugfs_create_file(name, 0444, dir, (void *)id, &dfs_cpu_ops);	}	return 0;}late_initcall(cpu_init_debugfs);