Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /* Test selecting other page sizes for mmap/shmget.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)    Before running this huge pages for each huge page size must have been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)    reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)    For large pages beyond MAX_ORDER (like 1GB on x86) boot options must be used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)    Also shmmax must be increased.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)    And you need to run as root to work around some weird permissions in shm.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)    And nothing using huge pages should run in parallel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)    When the program aborts you may need to clean up the shm segments with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)    ipcrm -m by hand, like this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)    sudo ipcs | awk '$1 == "0x00000000" {print $2}' | xargs -n1 sudo ipcrm -m
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)    (warning this will remove all if someone else uses them) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #define _GNU_SOURCE 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <sys/mman.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <sys/ipc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <sys/shm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <sys/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <glob.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <assert.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <stdarg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define err(x) perror(x), exit(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define MAP_HUGE_2MB    (21 << MAP_HUGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define MAP_HUGE_1GB    (30 << MAP_HUGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define MAP_HUGE_SHIFT  26
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define MAP_HUGE_MASK   0x3f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #if !defined(MAP_HUGETLB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define MAP_HUGETLB	0x40000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #define SHM_HUGETLB     04000   /* segment will use huge TLB pages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #define SHM_HUGE_SHIFT  26
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #define SHM_HUGE_MASK   0x3f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #define SHM_HUGE_2MB    (21 << SHM_HUGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) #define SHM_HUGE_1GB    (30 << SHM_HUGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #define NUM_PAGESIZES   5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) #define NUM_PAGES 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) #define Dprintf(fmt...) // printf(fmt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) unsigned long page_sizes[NUM_PAGESIZES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) int num_page_sizes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) int ilog2(unsigned long v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	int l = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	while ((1UL << l) < v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 		l++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	return l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) void find_pagesizes(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	glob_t g;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	glob("/sys/kernel/mm/hugepages/hugepages-*kB", 0, NULL, &g);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	assert(g.gl_pathc <= NUM_PAGESIZES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	for (i = 0; i < g.gl_pathc; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		sscanf(g.gl_pathv[i], "/sys/kernel/mm/hugepages/hugepages-%lukB",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 				&page_sizes[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		page_sizes[i] <<= 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		printf("Found %luMB\n", page_sizes[i] >> 20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	num_page_sizes = g.gl_pathc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	globfree(&g);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) unsigned long default_huge_page_size(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	unsigned long hps = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	char *line = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	size_t linelen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	FILE *f = fopen("/proc/meminfo", "r");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	if (!f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	while (getline(&line, &linelen, f) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		if (sscanf(line, "Hugepagesize:       %lu kB", &hps) == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 			hps <<= 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	free(line);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	return hps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) void show(unsigned long ps)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	char buf[100];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	if (ps == getpagesize())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	printf("%luMB: ", ps >> 20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	fflush(stdout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	snprintf(buf, sizeof buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		"cat /sys/kernel/mm/hugepages/hugepages-%lukB/free_hugepages",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 		ps >> 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	system(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) unsigned long read_sysfs(int warn, char *fmt, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	char *line = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	size_t linelen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	char buf[100];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	FILE *f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	va_list ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	unsigned long val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	va_start(ap, fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	vsnprintf(buf, sizeof buf, fmt, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	va_end(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	f = fopen(buf, "r");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	if (!f) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		if (warn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 			printf("missing %s\n", buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	if (getline(&line, &linelen, f) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		sscanf(line, "%lu", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	fclose(f);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	free(line);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) unsigned long read_free(unsigned long ps)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	return read_sysfs(ps != getpagesize(),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 			"/sys/kernel/mm/hugepages/hugepages-%lukB/free_hugepages",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 			ps >> 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) void test_mmap(unsigned long size, unsigned flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	char *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	unsigned long before, after;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	before = read_free(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	map = mmap(NULL, size*NUM_PAGES, PROT_READ|PROT_WRITE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 			MAP_PRIVATE|MAP_ANONYMOUS|MAP_HUGETLB|flags, -1, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	if (map == (char *)-1) err("mmap");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	memset(map, 0xff, size*NUM_PAGES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	after = read_free(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	Dprintf("before %lu after %lu diff %ld size %lu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		before, after, before - after, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	assert(size == getpagesize() || (before - after) == NUM_PAGES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	show(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	err = munmap(map, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	assert(!err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) void test_shmget(unsigned long size, unsigned flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	unsigned long before, after;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	before = read_free(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	id = shmget(IPC_PRIVATE, size * NUM_PAGES, IPC_CREAT|0600|flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	if (id < 0) err("shmget");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	struct shm_info i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	if (shmctl(id, SHM_INFO, (void *)&i) < 0) err("shmctl");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	Dprintf("alloc %lu res %lu\n", i.shm_tot, i.shm_rss);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	Dprintf("id %d\n", id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	char *map = shmat(id, NULL, 0600);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	if (map == (char*)-1) err("shmat");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	shmctl(id, IPC_RMID, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	memset(map, 0xff, size*NUM_PAGES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	after = read_free(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	Dprintf("before %lu after %lu diff %ld size %lu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 		before, after, before - after, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	assert(size == getpagesize() || (before - after) == NUM_PAGES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	show(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	err = shmdt(map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	assert(!err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) void sanity_checks(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	unsigned long largest = getpagesize();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	for (i = 0; i < num_page_sizes; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		if (page_sizes[i] > largest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 			largest = page_sizes[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		if (read_free(page_sizes[i]) < NUM_PAGES) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 			printf("Not enough huge pages for page size %lu MB, need %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 				page_sizes[i] >> 20,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 				NUM_PAGES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 			exit(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	if (read_sysfs(0, "/proc/sys/kernel/shmmax") < NUM_PAGES * largest) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		printf("Please do echo %lu > /proc/sys/kernel/shmmax", largest * NUM_PAGES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		exit(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) #if defined(__x86_64__)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	if (largest != 1U<<30) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		printf("No GB pages available on x86-64\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		       "Please boot with hugepagesz=1G hugepages=%d\n", NUM_PAGES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		exit(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) int main(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	unsigned default_hps = default_huge_page_size();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	find_pagesizes();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	sanity_checks();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	for (i = 0; i < num_page_sizes; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		unsigned long ps = page_sizes[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		int arg = ilog2(ps) << MAP_HUGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 		printf("Testing %luMB mmap with shift %x\n", ps >> 20, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		test_mmap(ps, MAP_HUGETLB | arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	printf("Testing default huge mmap\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	test_mmap(default_hps, SHM_HUGETLB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	puts("Testing non-huge shmget");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	test_shmget(getpagesize(), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	for (i = 0; i < num_page_sizes; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		unsigned long ps = page_sizes[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 		int arg = ilog2(ps) << SHM_HUGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		printf("Testing %luMB shmget with shift %x\n", ps >> 20, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		test_shmget(ps, SHM_HUGETLB | arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	puts("default huge shmget");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	test_shmget(default_hps, SHM_HUGETLB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }