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// SPDX-License-Identifier: GPL-2.0-only
* A generic implementation of binary search for the Linux kernel
* Copyright (C) 2008-2009 Ksplice, Inc.
* Author: Tim Abbott <>
#include <linux/export.h>
#include <linux/bsearch.h>
#include <linux/kprobes.h>
* bsearch - binary search an array of elements
* @key: pointer to item being searched for
* @base: pointer to first element to search
* @num: number of elements
* @size: size of each element
* @cmp: pointer to comparison function
* This function does a binary search on the given array. The
* contents of the array should already be in ascending sorted order
* under the provided comparison function.
* Note that the key need not have the same type as the elements in
* the array, e.g. key could be a string and the comparison function
* could compare the string with the struct's name field. However, if
* the key and elements in the array are of the same type, you can use
* the same comparison function for both sort() and bsearch().
void *bsearch(const void *key, const void *base, size_t num, size_t size, cmp_func_t cmp)
return __inline_bsearch(key, base, num, size, cmp);