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Diffstat (limited to 'tools/testing/selftests/vm/gup_benchmark.c')
-rw-r--r--tools/testing/selftests/vm/gup_benchmark.c42
1 files changed, 35 insertions, 7 deletions
diff --git a/tools/testing/selftests/vm/gup_benchmark.c b/tools/testing/selftests/vm/gup_benchmark.c
index 36df55132036..880b96fc80d4 100644
--- a/tools/testing/selftests/vm/gup_benchmark.c
+++ b/tools/testing/selftests/vm/gup_benchmark.c
@@ -15,9 +15,12 @@
#define PAGE_SIZE sysconf(_SC_PAGESIZE)
#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 delta_usec;
+ __u64 get_delta_usec;
+ __u64 put_delta_usec;
__u64 addr;
__u64 size;
__u32 nr_pages_per_call;
@@ -28,10 +31,12 @@ int main(int argc, char **argv)
{
struct gup_benchmark gup;
unsigned long size = 128 * MB;
- int i, fd, opt, nr_pages = 1, thp = -1, repeats = 1, write = 0;
+ int i, fd, filed, opt, nr_pages = 1, thp = -1, repeats = 1, write = 0;
+ int cmd = GUP_FAST_BENCHMARK, flags = MAP_PRIVATE;
+ char *file = "/dev/zero";
char *p;
- while ((opt = getopt(argc, argv, "m:r:n:tT")) != -1) {
+ while ((opt = getopt(argc, argv, "m:r:n:f:tTLUSH")) != -1) {
switch (opt) {
case 'm':
size = atoi(optarg) * MB;
@@ -48,13 +53,36 @@ int main(int argc, char **argv)
case 'T':
thp = 0;
break;
+ case 'L':
+ cmd = GUP_LONGTERM_BENCHMARK;
+ break;
+ case 'U':
+ cmd = GUP_BENCHMARK;
+ break;
case 'w':
write = 1;
+ break;
+ case 'f':
+ file = optarg;
+ break;
+ case 'S':
+ flags &= ~MAP_PRIVATE;
+ flags |= MAP_SHARED;
+ break;
+ case 'H':
+ flags |= MAP_HUGETLB;
+ break;
default:
return -1;
}
}
+ filed = open(file, O_RDWR|O_CREAT);
+ if (filed < 0) {
+ perror("open");
+ exit(filed);
+ }
+
gup.nr_pages_per_call = nr_pages;
gup.flags = write;
@@ -62,8 +90,7 @@ int main(int argc, char **argv)
if (fd == -1)
perror("open"), exit(1);
- p = mmap(NULL, size, PROT_READ | PROT_WRITE,
- MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
+ p = mmap(NULL, size, PROT_READ | PROT_WRITE, flags, filed, 0);
if (p == MAP_FAILED)
perror("mmap"), exit(1);
gup.addr = (unsigned long)p;
@@ -78,10 +105,11 @@ int main(int argc, char **argv)
for (i = 0; i < repeats; i++) {
gup.size = size;
- if (ioctl(fd, GUP_FAST_BENCHMARK, &gup))
+ if (ioctl(fd, cmd, &gup))
perror("ioctl"), exit(1);
- printf("Time: %lld us", gup.delta_usec);
+ printf("Time: get:%lld put:%lld us", gup.get_delta_usec,
+ gup.put_delta_usec);
if (gup.size != size)
printf(", truncated (size: %lld)", gup.size);
printf("\n");