1 files changed, 0 insertions, 257 deletions
diff --git a/tools/testing/selftests/vm/thuge-gen.c b/tools/testing/selftests/vm/thuge-gen.c
deleted file mode 100644
index 361ef7192cc6..000000000000
--- a/tools/testing/selftests/vm/thuge-gen.c
+++ /dev/null
@@ -1,257 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* Test selecting other page sizes for mmap/shmget.
-
-   Before running this huge pages for each huge page size must have been
-   reserved.
-   For large pages beyond MAX_ORDER (like 1GB on x86) boot options must be used.
-   Also shmmax must be increased.
-   And you need to run as root to work around some weird permissions in shm.
-   And nothing using huge pages should run in parallel.
-   When the program aborts you may need to clean up the shm segments with
-   ipcrm -m by hand, like this
-   sudo ipcs | awk '$1 == "0x00000000" {print $2}' | xargs -n1 sudo ipcrm -m
-   (warning this will remove all if someone else uses them) */
-
-#define _GNU_SOURCE 1
-#include <sys/mman.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <sys/ipc.h>
-#include <sys/shm.h>
-#include <sys/stat.h>
-#include <glob.h>
-#include <assert.h>
-#include <unistd.h>
-#include <stdarg.h>
-#include <string.h>
-
-#define err(x) perror(x), exit(1)
-
-#define MAP_HUGE_2MB    (21 << MAP_HUGE_SHIFT)
-#define MAP_HUGE_1GB    (30 << MAP_HUGE_SHIFT)
-#define MAP_HUGE_SHIFT  26
-#define MAP_HUGE_MASK   0x3f
-#if !defined(MAP_HUGETLB)
-#define MAP_HUGETLB	0x40000
-#endif
-
-#define SHM_HUGETLB     04000   /* segment will use huge TLB pages */
-#define SHM_HUGE_SHIFT  26
-#define SHM_HUGE_MASK   0x3f
-#define SHM_HUGE_2MB    (21 << SHM_HUGE_SHIFT)
-#define SHM_HUGE_1GB    (30 << SHM_HUGE_SHIFT)
-
-#define NUM_PAGESIZES   5
-
-#define NUM_PAGES 4
-
-#define Dprintf(fmt...) // printf(fmt)
-
-unsigned long page_sizes[NUM_PAGESIZES];
-int num_page_sizes;
-
-int ilog2(unsigned long v)
-{
-	int l = 0;
-	while ((1UL << l) < v)
-		l++;
-	return l;
-}
-
-void find_pagesizes(void)
-{
-	glob_t g;
-	int i;
-	glob("/sys/kernel/mm/hugepages/hugepages-*kB", 0, NULL, &g);
-	assert(g.gl_pathc <= NUM_PAGESIZES);
-	for (i = 0; i < g.gl_pathc; i++) {
-		sscanf(g.gl_pathv[i], "/sys/kernel/mm/hugepages/hugepages-%lukB",
-				&page_sizes[i]);
-		page_sizes[i] <<= 10;
-		printf("Found %luMB\n", page_sizes[i] >> 20);
-	}
-	num_page_sizes = g.gl_pathc;
-	globfree(&g);
-}
-
-unsigned long default_huge_page_size(void)
-{
-	unsigned long hps = 0;
-	char *line = NULL;
-	size_t linelen = 0;
-	FILE *f = fopen("/proc/meminfo", "r");
-	if (!f)
-		return 0;
-	while (getline(&line, &linelen, f) > 0) {
-		if (sscanf(line, "Hugepagesize:       %lu kB", &hps) == 1) {
-			hps <<= 10;
-			break;
-		}
-	}
-	free(line);
-	return hps;
-}
-
-void show(unsigned long ps)
-{
-	char buf[100];
-	if (ps == getpagesize())
-		return;
-	printf("%luMB: ", ps >> 20);
-	fflush(stdout);
-	snprintf(buf, sizeof buf,
-		"cat /sys/kernel/mm/hugepages/hugepages-%lukB/free_hugepages",
-		ps >> 10);
-	system(buf);
-}
-
-unsigned long read_sysfs(int warn, char *fmt, ...)
-{
-	char *line = NULL;
-	size_t linelen = 0;
-	char buf[100];
-	FILE *f;
-	va_list ap;
-	unsigned long val = 0;
-
-	va_start(ap, fmt);
-	vsnprintf(buf, sizeof buf, fmt, ap);
-	va_end(ap);
-
-	f = fopen(buf, "r");
-	if (!f) {
-		if (warn)
-			printf("missing %s\n", buf);
-		return 0;
-	}
-	if (getline(&line, &linelen, f) > 0) {
-		sscanf(line, "%lu", &val);
-	}
-	fclose(f);
-	free(line);
-	return val;
-}
-
-unsigned long read_free(unsigned long ps)
-{
-	return read_sysfs(ps != getpagesize(),
-			"/sys/kernel/mm/hugepages/hugepages-%lukB/free_hugepages",
-			ps >> 10);
-}
-
-void test_mmap(unsigned long size, unsigned flags)
-{
-	char *map;
-	unsigned long before, after;
-	int err;
-
-	before = read_free(size);
-	map = mmap(NULL, size*NUM_PAGES, PROT_READ|PROT_WRITE,
-			MAP_PRIVATE|MAP_ANONYMOUS|MAP_HUGETLB|flags, -1, 0);
-
-	if (map == (char *)-1) err("mmap");
-	memset(map, 0xff, size*NUM_PAGES);
-	after = read_free(size);
-	Dprintf("before %lu after %lu diff %ld size %lu\n",
-		before, after, before - after, size);
-	assert(size == getpagesize() || (before - after) == NUM_PAGES);
-	show(size);
-	err = munmap(map, size);
-	assert(!err);
-}
-
-void test_shmget(unsigned long size, unsigned flags)
-{
-	int id;
-	unsigned long before, after;
-	int err;
-
-	before = read_free(size);
-	id = shmget(IPC_PRIVATE, size * NUM_PAGES, IPC_CREAT|0600|flags);
-	if (id < 0) err("shmget");
-
-	struct shm_info i;
-	if (shmctl(id, SHM_INFO, (void *)&i) < 0) err("shmctl");
-	Dprintf("alloc %lu res %lu\n", i.shm_tot, i.shm_rss);
-
-
-	Dprintf("id %d\n", id);
-	char *map = shmat(id, NULL, 0600);
-	if (map == (char*)-1) err("shmat");
-
-	shmctl(id, IPC_RMID, NULL);
-
-	memset(map, 0xff, size*NUM_PAGES);
-	after = read_free(size);
-
-	Dprintf("before %lu after %lu diff %ld size %lu\n",
-		before, after, before - after, size);
-	assert(size == getpagesize() || (before - after) == NUM_PAGES);
-	show(size);
-	err = shmdt(map);
-	assert(!err);
-}
-
-void sanity_checks(void)
-{
-	int i;
-	unsigned long largest = getpagesize();
-
-	for (i = 0; i < num_page_sizes; i++) {
-		if (page_sizes[i] > largest)
-			largest = page_sizes[i];
-
-		if (read_free(page_sizes[i]) < NUM_PAGES) {
-			printf("Not enough huge pages for page size %lu MB, need %u\n",
-				page_sizes[i] >> 20,
-				NUM_PAGES);
-			exit(0);
-		}
-	}
-
-	if (read_sysfs(0, "/proc/sys/kernel/shmmax") < NUM_PAGES * largest) {
-		printf("Please do echo %lu > /proc/sys/kernel/shmmax", largest * NUM_PAGES);
-		exit(0);
-	}
-
-#if defined(__x86_64__)
-	if (largest != 1U<<30) {
-		printf("No GB pages available on x86-64\n"
-		       "Please boot with hugepagesz=1G hugepages=%d\n", NUM_PAGES);
-		exit(0);
-	}
-#endif
-}
-
-int main(void)
-{
-	int i;
-	unsigned default_hps = default_huge_page_size();
-
-	find_pagesizes();
-
-	sanity_checks();
-
-	for (i = 0; i < num_page_sizes; i++) {
-		unsigned long ps = page_sizes[i];
-		int arg = ilog2(ps) << MAP_HUGE_SHIFT;
-		printf("Testing %luMB mmap with shift %x\n", ps >> 20, arg);
-		test_mmap(ps, MAP_HUGETLB | arg);
-	}
-	printf("Testing default huge mmap\n");
-	test_mmap(default_hps, SHM_HUGETLB);
-
-	puts("Testing non-huge shmget");
-	test_shmget(getpagesize(), 0);
-
-	for (i = 0; i < num_page_sizes; i++) {
-		unsigned long ps = page_sizes[i];
-		int arg = ilog2(ps) << SHM_HUGE_SHIFT;
-		printf("Testing %luMB shmget with shift %x\n", ps >> 20, arg);
-		test_shmget(ps, SHM_HUGETLB | arg);
-	}
-	puts("default huge shmget");
-	test_shmget(default_hps, SHM_HUGETLB);
-
-	return 0;
-}