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KVM: selftests: Read binary stats desc in lib

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Move the code to read the binary stats descriptors to the KVM selftests
library. It will be re-used by other tests to check KVM behavior.

No functional change intended.

Reviewed-by: David Matlack <dmatlack@google.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Ben Gardon <bgardon@google.com>
Message-Id: <20220613212523.3436117-4-bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Ben Gardon
2022-06-13 21:25:16 +00:00
committed by Paolo Bonzini
parent 32faa0647c
commit 4d0a059415
3 changed files with 63 additions and 11 deletions
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tools/testing/selftests/kvm/kvm_binary_stats_test.c
+5 -11
View File
@@ -35,7 +35,7 @@ static void stats_test(int stats_fd)
/* Read kvm stats header */
read_stats_header(stats_fd, &header);
size_desc = sizeof(*stats_desc) + header.name_size;
size_desc = get_stats_descriptor_size(&header);
/* Read kvm stats id string */
id = malloc(header.name_size);
@@ -62,18 +62,12 @@ static void stats_test(int stats_fd)
header.data_offset),
"Descriptor block is overlapped with data block");
/* Allocate memory for stats descriptors */
stats_desc = calloc(header.num_desc, size_desc);
TEST_ASSERT(stats_desc, "Allocate memory for stats descriptors");
/* Read kvm stats descriptors */
ret = pread(stats_fd, stats_desc,
size_desc * header.num_desc, header.desc_offset);
TEST_ASSERT(ret == size_desc * header.num_desc,
"Read KVM stats descriptors");
stats_desc = read_stats_descriptors(stats_fd, &header);
/* Sanity check for fields in descriptors */
for (i = 0; i < header.num_desc; ++i) {
pdesc = (void *)stats_desc + i * size_desc;
pdesc = get_stats_descriptor(stats_desc, i, &header);
/* Check type,unit,base boundaries */
TEST_ASSERT((pdesc->flags & KVM_STATS_TYPE_MASK)
<= KVM_STATS_TYPE_MAX, "Unknown KVM stats type");
@@ -129,7 +123,7 @@ static void stats_test(int stats_fd)
"Data size is not correct");
/* Check stats offset */
for (i = 0; i < header.num_desc; ++i) {
pdesc = (void *)stats_desc + i * size_desc;
pdesc = get_stats_descriptor(stats_desc, i, &header);
TEST_ASSERT(pdesc->offset < size_data,
"Invalid offset (%u) for stats: %s",
pdesc->offset, pdesc->name);
@@ -144,7 +138,7 @@ static void stats_test(int stats_fd)
/* Read kvm stats data one by one */
size_data = 0;
for (i = 0; i < header.num_desc; ++i) {
pdesc = (void *)stats_desc + i * size_desc;
pdesc = get_stats_descriptor(stats_desc, i, &header);
ret = pread(stats_fd, stats_data,
pdesc->size * sizeof(*stats_data),
header.data_offset + size_data);