Root/mm/percpu_up.c

1/*
2 * mm/percpu_up.c - dummy percpu memory allocator implementation for UP
3 */
4
5#include <linux/module.h>
6#include <linux/percpu.h>
7#include <linux/slab.h>
8
9void __percpu *__alloc_percpu(size_t size, size_t align)
10{
11    /*
12     * Can't easily make larger alignment work with kmalloc. WARN
13     * on it. Larger alignment should only be used for module
14     * percpu sections on SMP for which this path isn't used.
15     */
16    WARN_ON_ONCE(align > SMP_CACHE_BYTES);
17    return (void __percpu __force *)kzalloc(size, GFP_KERNEL);
18}
19EXPORT_SYMBOL_GPL(__alloc_percpu);
20
21void free_percpu(void __percpu *p)
22{
23    kfree(this_cpu_ptr(p));
24}
25EXPORT_SYMBOL_GPL(free_percpu);
26
27phys_addr_t per_cpu_ptr_to_phys(void *addr)
28{
29    return __pa(addr);
30}
31

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