LXR linux/mm/percpu

   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 kzalloc(size, GFP_KERNEL);
  18}
  19EXPORT_SYMBOL_GPL(__alloc_percpu);
  20
  21void free_percpu(void __percpu *p)
  22{
  23        kfree(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