1 files changed, 0 insertions, 135 deletions
diff --git a/mm/gup_benchmark.c b/mm/gup_benchmark.c
deleted file mode 100644
index 5b42d3d4b60a..000000000000
--- a/mm/gup_benchmark.c
+++ /dev/null
@@ -1,135 +0,0 @@
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-#include <linux/ktime.h>
-#include <linux/debugfs.h>
-
-#define GUP_FAST_BENCHMARK	_IOWR('g', 1, struct gup_benchmark)
-#define GUP_LONGTERM_BENCHMARK	_IOWR('g', 2, struct gup_benchmark)
-#define GUP_BENCHMARK		_IOWR('g', 3, struct gup_benchmark)
-
-struct gup_benchmark {
-	__u64 get_delta_usec;
-	__u64 put_delta_usec;
-	__u64 addr;
-	__u64 size;
-	__u32 nr_pages_per_call;
-	__u32 flags;
-	__u64 expansion[10];	/* For future use */
-};
-
-static int __gup_benchmark_ioctl(unsigned int cmd,
-		struct gup_benchmark *gup)
-{
-	ktime_t start_time, end_time;
-	unsigned long i, nr_pages, addr, next;
-	int nr;
-	struct page **pages;
-
-	if (gup->size > ULONG_MAX)
-		return -EINVAL;
-
-	nr_pages = gup->size / PAGE_SIZE;
-	pages = kvcalloc(nr_pages, sizeof(void *), GFP_KERNEL);
-	if (!pages)
-		return -ENOMEM;
-
-	i = 0;
-	nr = gup->nr_pages_per_call;
-	start_time = ktime_get();
-	for (addr = gup->addr; addr < gup->addr + gup->size; addr = next) {
-		if (nr != gup->nr_pages_per_call)
-			break;
-
-		next = addr + nr * PAGE_SIZE;
-		if (next > gup->addr + gup->size) {
-			next = gup->addr + gup->size;
-			nr = (next - addr) / PAGE_SIZE;
-		}
-
-		switch (cmd) {
-		case GUP_FAST_BENCHMARK:
-			nr = get_user_pages_fast(addr, nr, gup->flags & 1,
-						 pages + i);
-			break;
-		case GUP_LONGTERM_BENCHMARK:
-			nr = get_user_pages_longterm(addr, nr, gup->flags & 1,
-						     pages + i, NULL);
-			break;
-		case GUP_BENCHMARK:
-			nr = get_user_pages(addr, nr, gup->flags & 1, pages + i,
-					    NULL);
-			break;
-		default:
-			return -1;
-		}
-
-		if (nr <= 0)
-			break;
-		i += nr;
-	}
-	end_time = ktime_get();
-
-	gup->get_delta_usec = ktime_us_delta(end_time, start_time);
-	gup->size = addr - gup->addr;
-
-	start_time = ktime_get();
-	for (i = 0; i < nr_pages; i++) {
-		if (!pages[i])
-			break;
-		put_page(pages[i]);
-	}
-	end_time = ktime_get();
-	gup->put_delta_usec = ktime_us_delta(end_time, start_time);
-
-	kvfree(pages);
-	return 0;
-}
-
-static long gup_benchmark_ioctl(struct file *filep, unsigned int cmd,
-		unsigned long arg)
-{
-	struct gup_benchmark gup;
-	int ret;
-
-	switch (cmd) {
-	case GUP_FAST_BENCHMARK:
-	case GUP_LONGTERM_BENCHMARK:
-	case GUP_BENCHMARK:
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	if (copy_from_user(&gup, (void __user *)arg, sizeof(gup)))
-		return -EFAULT;
-
-	ret = __gup_benchmark_ioctl(cmd, &gup);
-	if (ret)
-		return ret;
-
-	if (copy_to_user((void __user *)arg, &gup, sizeof(gup)))
-		return -EFAULT;
-
-	return 0;
-}
-
-static const struct file_operations gup_benchmark_fops = {
-	.open = nonseekable_open,
-	.unlocked_ioctl = gup_benchmark_ioctl,
-};
-
-static int gup_benchmark_init(void)
-{
-	void *ret;
-
-	ret = debugfs_create_file_unsafe("gup_benchmark", 0600, NULL, NULL,
-			&gup_benchmark_fops);
-	if (!ret)
-		pr_warn("Failed to create gup_benchmark in debugfs");
-
-	return 0;
-}
-
-late_initcall(gup_benchmark_init);