Add a parameter to control the backing memory type for
dirty_log_perf_test so that the test can be run with hugepages.
To: linux-kselftest@xxxxxxxxxxxxxxx
CC: Peter Xu <peterx@xxxxxxxxxx>
CC: Andrew Jones <drjones@xxxxxxxxxx>
CC: Thomas Huth <thuth@xxxxxxxxxx>
Signed-off-by: Ben Gardon <bgardon@xxxxxxxxxx>
---
.../selftests/kvm/demand_paging_test.c | 3 +-
.../selftests/kvm/dirty_log_perf_test.c | 15 ++++++++--
.../testing/selftests/kvm/include/kvm_util.h | 6 ----
.../selftests/kvm/include/perf_test_util.h | 3 +-
.../testing/selftests/kvm/include/test_util.h | 14 +++++++++
.../selftests/kvm/lib/perf_test_util.c | 6 ++--
tools/testing/selftests/kvm/lib/test_util.c | 29 +++++++++++++++++++
7 files changed, 62 insertions(+), 14 deletions(-)
diff --git a/tools/testing/selftests/kvm/demand_paging_test.c b/tools/testing/selftests/kvm/demand_paging_test.c
index cdad1eca72f7..9e3254ff0821 100644
--- a/tools/testing/selftests/kvm/demand_paging_test.c
+++ b/tools/testing/selftests/kvm/demand_paging_test.c
@@ -265,7 +265,8 @@ static void run_test(enum vm_guest_mode mode, void *arg)
int vcpu_id;
int r;
- vm = perf_test_create_vm(mode, nr_vcpus, guest_percpu_mem_size);
+ vm = perf_test_create_vm(mode, nr_vcpus, guest_percpu_mem_size,
+ VM_MEM_SRC_ANONYMOUS);
perf_test_args.wr_fract = 1;
diff --git a/tools/testing/selftests/kvm/dirty_log_perf_test.c b/tools/testing/selftests/kvm/dirty_log_perf_test.c
index 2283a0ec74a9..604ccefd6e76 100644
--- a/tools/testing/selftests/kvm/dirty_log_perf_test.c
+++ b/tools/testing/selftests/kvm/dirty_log_perf_test.c
@@ -92,6 +92,7 @@ struct test_params {
unsigned long iterations;
uint64_t phys_offset;
int wr_fract;
+ enum vm_mem_backing_src_type backing_src;
};
static void run_test(enum vm_guest_mode mode, void *arg)
@@ -111,7 +112,8 @@ static void run_test(enum vm_guest_mode mode, void *arg)
struct kvm_enable_cap cap = {};
struct timespec clear_dirty_log_total = (struct timespec){0};
- vm = perf_test_create_vm(mode, nr_vcpus, guest_percpu_mem_size);
+ vm = perf_test_create_vm(mode, nr_vcpus, guest_percpu_mem_size,
+ p->backing_src);
perf_test_args.wr_fract = p->wr_fract;
@@ -236,7 +238,7 @@ static void help(char *name)
{
puts("");
printf("usage: %s [-h] [-i iterations] [-p offset] "
- "[-m mode] [-b vcpu bytes] [-v vcpus]\n", name);
+ "[-m mode] [-b vcpu bytes] [-v vcpus] [-s mem type]\n", name);
puts("");
printf(" -i: specify iteration counts (default: %"PRIu64")\n",
TEST_HOST_LOOP_N);
@@ -251,6 +253,9 @@ static void help(char *name)
" 1/<fraction of pages to write>.\n"
" (default: 1 i.e. all pages are written to.)\n");
printf(" -v: specify the number of vCPUs to run.\n");
+ printf(" -s: specify the type of memory that should be used to\n"
+ " back the guest data region.\n");
+ backing_src_help();
puts("");
exit(0);
}
@@ -261,6 +266,7 @@ int main(int argc, char *argv[])
struct test_params p = {
.iterations = TEST_HOST_LOOP_N,
.wr_fract = 1,
+ .backing_src = VM_MEM_SRC_ANONYMOUS,
};
int opt;
@@ -271,7 +277,7 @@ int main(int argc, char *argv[])
guest_modes_append_default();
- while ((opt = getopt(argc, argv, "hi:p:m:b:f:v:")) != -1) {
+ while ((opt = getopt(argc, argv, "hi:p:m:b:f:v:s:")) != -1) {
switch (opt) {
case 'i':
p.iterations = strtol(optarg, NULL, 10);
@@ -295,6 +301,9 @@ int main(int argc, char *argv[])
TEST_ASSERT(nr_vcpus > 0 && nr_vcpus <= max_vcpus,
"Invalid number of vcpus, must be between 1 and %d", max_vcpus);
break;
+ case 's':
+ p.backing_src = parse_backing_src_type(optarg);
+ break;
case 'h':
default:
help(argv[0]);
diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h
index 5cbb861525ed..2d7eb6989e83 100644
--- a/tools/testing/selftests/kvm/include/kvm_util.h
+++ b/tools/testing/selftests/kvm/include/kvm_util.h
@@ -79,12 +79,6 @@ struct vm_guest_mode_params {
};
extern const struct vm_guest_mode_params vm_guest_mode_params[];
-enum vm_mem_backing_src_type {
- VM_MEM_SRC_ANONYMOUS,
- VM_MEM_SRC_ANONYMOUS_THP,
- VM_MEM_SRC_ANONYMOUS_HUGETLB,
-};
-
int kvm_check_cap(long cap);
int vm_enable_cap(struct kvm_vm *vm, struct kvm_enable_cap *cap);
int vcpu_enable_cap(struct kvm_vm *vm, uint32_t vcpu_id,
diff --git a/tools/testing/selftests/kvm/include/perf_test_util.h b/tools/testing/selftests/kvm/include/perf_test_util.h
index b1188823c31b..8b66ab300175 100644
--- a/tools/testing/selftests/kvm/include/perf_test_util.h
+++ b/tools/testing/selftests/kvm/include/perf_test_util.h
@@ -44,7 +44,8 @@ extern struct perf_test_args perf_test_args;
extern uint64_t guest_test_phys_mem;
struct kvm_vm *perf_test_create_vm(enum vm_guest_mode mode, int vcpus,
- uint64_t vcpu_memory_bytes);
+ uint64_t vcpu_memory_bytes,
+ enum vm_mem_backing_src_type backing_src);
void perf_test_destroy_vm(struct kvm_vm *vm);
void perf_test_setup_vcpus(struct kvm_vm *vm, int vcpus, uint64_t vcpu_memory_bytes);
diff --git a/tools/testing/selftests/kvm/include/test_util.h b/tools/testing/selftests/kvm/include/test_util.h
index ffffa560436b..749b24a239a1 100644
--- a/tools/testing/selftests/kvm/include/test_util.h
+++ b/tools/testing/selftests/kvm/include/test_util.h
@@ -67,4 +67,18 @@ struct timespec timespec_sub(struct timespec ts1, struct timespec ts2);
struct timespec timespec_diff_now(struct timespec start);
struct timespec timespec_div(struct timespec ts, int divisor);
+enum vm_mem_backing_src_type {
+ VM_MEM_SRC_ANONYMOUS,
+ VM_MEM_SRC_ANONYMOUS_THP,
+ VM_MEM_SRC_ANONYMOUS_HUGETLB,
+};
+
+struct vm_mem_backing_src_alias {
+ const char *name;
+ enum vm_mem_backing_src_type type;
+};
+
+void backing_src_help(void);
+enum vm_mem_backing_src_type parse_backing_src_type(const char *type_name);
+
#endif /* SELFTEST_KVM_TEST_UTIL_H */
diff --git a/tools/testing/selftests/kvm/lib/perf_test_util.c b/tools/testing/selftests/kvm/lib/perf_test_util.c
index 9be1944c2d1c..7f1571924347 100644
--- a/tools/testing/selftests/kvm/lib/perf_test_util.c
+++ b/tools/testing/selftests/kvm/lib/perf_test_util.c
@@ -49,7 +49,8 @@ static void guest_code(uint32_t vcpu_id)
}
struct kvm_vm *perf_test_create_vm(enum vm_guest_mode mode, int vcpus,
- uint64_t vcpu_memory_bytes)
+ uint64_t vcpu_memory_bytes,
+ enum vm_mem_backing_src_type backing_src)
{
struct kvm_vm *vm;
uint64_t guest_num_pages;
@@ -93,8 +94,7 @@ struct kvm_vm *perf_test_create_vm(enum vm_guest_mode mode, int vcpus,
pr_info("guest physical test memory offset: 0x%lx\n", guest_test_phys_mem);
/* Add an extra memory slot for testing */
- vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS,
- guest_test_phys_mem,
+ vm_userspace_mem_region_add(vm, backing_src, guest_test_phys_mem,
PERF_TEST_MEM_SLOT_INDEX,
guest_num_pages, 0);
diff --git a/tools/testing/selftests/kvm/lib/test_util.c b/tools/testing/selftests/kvm/lib/test_util.c
index 8e04c0b1608e..9fd60b142c23 100644
--- a/tools/testing/selftests/kvm/lib/test_util.c
+++ b/tools/testing/selftests/kvm/lib/test_util.c
@@ -10,6 +10,7 @@
#include <limits.h>
#include <stdlib.h>
#include <time.h>
+#include "linux/kernel.h"
#include "test_util.h"
@@ -109,3 +110,31 @@ void print_skip(const char *fmt, ...)
va_end(ap);
puts(", skipping test");
}
+
+const struct vm_mem_backing_src_alias backing_src_aliases[] = {
+ {"anonymous", VM_MEM_SRC_ANONYMOUS,},
+ {"anonymous_thp", VM_MEM_SRC_ANONYMOUS_THP,},
+ {"anonymous_hugetlb", VM_MEM_SRC_ANONYMOUS_HUGETLB,},
+};
+
+void backing_src_help(void)
+{
+ int i;
+
+ printf("Available backing src types:\n");
+ for (i = 0; i < ARRAY_SIZE(backing_src_aliases); i++)
+ printf("\t%s\n", backing_src_aliases[i].name);
+}
+
+enum vm_mem_backing_src_type parse_backing_src_type(const char *type_name)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(backing_src_aliases); i++)
+ if (!strcmp(type_name, backing_src_aliases[i].name))
+ return backing_src_aliases[i].type;
+
+ backing_src_help();
+ TEST_FAIL("Unknown backing src type: %s", type_name);
+ return -1;
+}
--
2.30.0.365.g02bc693789-goog
