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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#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: 0x%x\n", c->topo.initial_apicid); seq_printf(m, "apicid: 0x%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, "logical_core_id: %u\n", c->topo.logical_core_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);