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;
uint64_t phys_offset;
int wr_fract;
bool partition_vcpu_memory_access;
+ enum vm_mem_backing_src_type backing_src;
};
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;
{
puts("");
printf("usage: %s [-h] [-i iterations] [-p offset] "
- "[-m mode] [-b vcpu bytes] [-v vcpus] [-o]\n", name);
+ "[-m mode] [-b vcpu bytes] [-v vcpus] [-o] [-s mem type]\n", name);
puts("");
printf(" -i: specify iteration counts (default: %"PRIu64")\n",
TEST_HOST_LOOP_N);
printf(" -v: specify the number of vCPUs to run.\n");
printf(" -o: Overlap guest memory accesses instead of partitioning\n"
" them into a separate region of memory for each vCPU.\n");
+ printf(" -s: specify the type of memory that should be used to\n"
+ " back the guest data region.\n\n");
+ backing_src_help();
puts("");
exit(0);
}
.iterations = TEST_HOST_LOOP_N,
.wr_fract = 1,
.partition_vcpu_memory_access = true,
+ .backing_src = VM_MEM_SRC_ANONYMOUS,
};
int opt;
guest_modes_append_default();
- while ((opt = getopt(argc, argv, "hi:p:m:b:f:v:o")) != -1) {
+ while ((opt = getopt(argc, argv, "hi:p:m:b:f:v:os:")) != -1) {
switch (opt) {
case 'i':
p.iterations = atoi(optarg);
break;
case 'o':
p.partition_vcpu_memory_access = false;
+ case 's':
+ p.backing_src = parse_backing_src_type(optarg);
break;
case 'h':
default:
};
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,
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,
struct timespec timespec_elapsed(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 */
}
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;
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);
#include <limits.h>
#include <stdlib.h>
#include <time.h>
+#include "linux/kernel.h"
#include "test_util.h"
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;
+}
struct kvm_vm *vm;
int vcpu_id;
- 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;