Release 4.14 arch/x86/kernel/cpu/match.c
// SPDX-License-Identifier: GPL-2.0
#include <asm/cpu_device_id.h>
#include <asm/cpufeature.h>
#include <linux/cpu.h>
#include <linux/export.h>
#include <linux/slab.h>
/**
* x86_match_cpu - match current CPU again an array of x86_cpu_ids
* @match: Pointer to array of x86_cpu_ids. Last entry terminated with
* {}.
*
* Return the entry if the current CPU matches the entries in the
* passed x86_cpu_id match table. Otherwise NULL. The match table
* contains vendor (X86_VENDOR_*), family, model and feature bits or
* respective wildcard entries.
*
* A typical table entry would be to match a specific CPU
* { X86_VENDOR_INTEL, 6, 0x12 }
* or to match a specific CPU feature
* { X86_FEATURE_MATCH(X86_FEATURE_FOOBAR) }
*
* Fields can be wildcarded with %X86_VENDOR_ANY, %X86_FAMILY_ANY,
* %X86_MODEL_ANY, %X86_FEATURE_ANY or 0 (except for vendor)
*
* Arrays used to match for this should also be declared using
* MODULE_DEVICE_TABLE(x86cpu, ...)
*
* This always matches against the boot cpu, assuming models and features are
* consistent over all CPUs.
*/
const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match)
{
const struct x86_cpu_id *m;
struct cpuinfo_x86 *c = &boot_cpu_data;
for (m = match; m->vendor | m->family | m->model | m->feature; m++) {
if (m->vendor != X86_VENDOR_ANY && c->x86_vendor != m->vendor)
continue;
if (m->family != X86_FAMILY_ANY && c->x86 != m->family)
continue;
if (m->model != X86_MODEL_ANY && c->x86_model != m->model)
continue;
if (m->feature != X86_FEATURE_ANY && !cpu_has(c, m->feature))
continue;
return m;
}
return NULL;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Andi Kleen | 131 | 100.00% | 1 | 100.00% |
Total | 131 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL(x86_match_cpu);
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Andi Kleen | 146 | 95.42% | 1 | 16.67% |
Thomas Renninger | 3 | 1.96% | 1 | 16.67% |
Borislav Petkov | 1 | 0.65% | 1 | 16.67% |
Greg Kroah-Hartman | 1 | 0.65% | 1 | 16.67% |
Paul Gortmaker | 1 | 0.65% | 1 | 16.67% |
Josh Triplett | 1 | 0.65% | 1 | 16.67% |
Total | 153 | 100.00% | 6 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.