threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
42 lines
791 B
C
42 lines
791 B
C
/*
|
|
* Copyright 2016, Anton Blanchard, Michael Ellerman, IBM Corp.
|
|
* Licensed under GPLv2.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <sys/mman.h>
|
|
#include <time.h>
|
|
|
|
#include "utils.h"
|
|
|
|
#define ITERATIONS 5000000
|
|
|
|
#define MEMSIZE (128 * 1024 * 1024)
|
|
|
|
int test_mmap(void)
|
|
{
|
|
struct timespec ts_start, ts_end;
|
|
unsigned long i = ITERATIONS;
|
|
|
|
clock_gettime(CLOCK_MONOTONIC, &ts_start);
|
|
|
|
while (i--) {
|
|
char *c = mmap(NULL, MEMSIZE, PROT_READ|PROT_WRITE,
|
|
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
|
|
FAIL_IF(c == MAP_FAILED);
|
|
munmap(c, MEMSIZE);
|
|
}
|
|
|
|
clock_gettime(CLOCK_MONOTONIC, &ts_end);
|
|
|
|
printf("time = %.6f\n", ts_end.tv_sec - ts_start.tv_sec + (ts_end.tv_nsec - ts_start.tv_nsec) / 1e9);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
return test_harness(test_mmap, "mmap_bench");
|
|
}
|