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/*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Copyright (C) 2020 Karel Zak <kzak@redhat.com>
*/
#include "lscpu.h"
struct lscpu_cpu *lscpu_new_cpu(int id)
{
struct lscpu_cpu *cpu;
cpu = xcalloc(1, sizeof(struct lscpu_cpu));
cpu->refcount = 1;
cpu->logical_id = id;
cpu->coreid = -1;
cpu->socketid = -1;
cpu->bookid = -1;
cpu->drawerid = -1;
cpu->address = -1;
cpu->configured = -1;
DBG(CPU, ul_debugobj(cpu, "alloc"));
return cpu;
}
void lscpu_ref_cpu(struct lscpu_cpu *cpu)
{
if (cpu)
cpu->refcount++;
}
void lscpu_unref_cpu(struct lscpu_cpu *cpu)
{
if (!cpu)
return;
if (--cpu->refcount <= 0) {
DBG(CPU, ul_debugobj(cpu, " freeing #%d", cpu->logical_id));
lscpu_unref_cputype(cpu->type);
cpu->type = NULL;
free(cpu->dynamic_mhz);
free(cpu->static_mhz);
free(cpu->mhz);
free(cpu->bogomips);
free(cpu);
}
}
/*
* Create and initialize array with CPU structs according to @cpuset.
*/
int lscpu_create_cpus(struct lscpu_cxt *cxt, cpu_set_t *cpuset, size_t setsize)
{
size_t n, i;
assert(!cxt->cpus);
cxt->npossibles = CPU_COUNT_S(setsize, cpuset);
cxt->cpus = xcalloc(1, cxt->npossibles * sizeof(struct lscpu_cpu *));
for (n = 0, i = 0; n < (size_t) cxt->maxcpus && i < cxt->npossibles; n++) {
if (CPU_ISSET_S(n, setsize, cpuset))
cxt->cpus[i++] = lscpu_new_cpu(n);
}
return 0;
}
int lscpu_cpu_set_type(struct lscpu_cpu *cpu, struct lscpu_cputype *type)
{
if (cpu->type == type)
return 0;
lscpu_unref_cputype(cpu->type);
cpu->type = type;
lscpu_ref_cputype(type);
DBG(CPU, ul_debugobj(cpu, "cputype set to %s", type ? type->vendor : NULL));
return 0;
}
/* don't forget lscpu_ref_cpu() ! */
struct lscpu_cpu *lscpu_get_cpu(struct lscpu_cxt *cxt, int logical_id)
{
size_t i;
for (i = 0; i < cxt->npossibles; i++) {
struct lscpu_cpu *cpu = cxt->cpus[i];
if (cpu && cpu->logical_id == logical_id)
return cpu;
}
return NULL;
}
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