sort.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _LINUX_SORT_H
 3#define _LINUX_SORT_H
 4
 5#include <linux/types.h>
 6
 7/**
 8 * cmp_int - perform a three-way comparison of the arguments
 9 * @l: the left argument
10 * @r: the right argument
11 *
12 * Return: 1 if the left argument is greater than the right one; 0 if the
13 * arguments are equal; -1 if the left argument is less than the right one.
14 */
15#define cmp_int(l, r) (((l) > (r)) - ((l) < (r)))
16
17void sort_r(void *base, size_t num, size_t size,
18	    cmp_r_func_t cmp_func,
19	    swap_r_func_t swap_func,
20	    const void *priv);
21
22void sort(void *base, size_t num, size_t size,
23	  cmp_func_t cmp_func,
24	  swap_func_t swap_func);
25
26/* Versions that periodically call cond_resched(): */
27
28void sort_r_nonatomic(void *base, size_t num, size_t size,
29		      cmp_r_func_t cmp_func,
30		      swap_r_func_t swap_func,
31		      const void *priv);
32
33void sort_nonatomic(void *base, size_t num, size_t size,
34		    cmp_func_t cmp_func,
35		    swap_func_t swap_func);
36
37#endif