/* * Copyright 2016, Anton Blanchard, Michael Ellerman, IBM Corp. * Licensed under GPLv2. */ #include #include #include #include #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"); } gi/linux/net-next.git/'>net-next.git
net-next plumbingsTobias Klauser
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