mm/gup_benchmark.c: add additional pinning methods
[muen/linux.git] / mm / gup_benchmark.c
index e6aff102373bec1c7f817f26edf90ba41d8ebbfc..debf11388a600d0f445ed1ac055e14bf0d55790d 100644 (file)
@@ -6,6 +6,8 @@
 #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;
@@ -43,7 +45,23 @@ static int __gup_benchmark_ioctl(unsigned int cmd,
                        nr = (next - addr) / PAGE_SIZE;
                }
 
-               nr = get_user_pages_fast(addr, nr, gup->flags & 1, pages + i);
+               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;
@@ -72,8 +90,14 @@ static long gup_benchmark_ioctl(struct file *filep, unsigned int cmd,
        struct gup_benchmark gup;
        int ret;
 
-       if (cmd != GUP_FAST_BENCHMARK)
+       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;