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| author | Ben Gardon <bgardon@google.com> | 2021-01-12 13:42:51 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-02-04 05:27:18 -0500 |
| commit | 86753bd04c7ca6b551b83c5395dd25e95de99aa4 (patch) | |
| tree | b5070f0131091d78f57e6b7f99f6f0611c8276a1 | |
| parent | 2d501238bc257ae86b345cb23fae3fd1af14687e (diff) | |
| download | powerpc-86753bd04c7ca6b551b83c5395dd25e95de99aa4.tar.gz | |
KVM: selftests: Fix population stage in dirty_log_perf_test
Currently the population stage in the dirty_log_perf_test does nothing
as the per-vCPU iteration counters are not initialized and the loop does
not wait for each vCPU. Remedy those errors.
Reviewed-by: Jacob Xu <jacobhxu@google.com>
Reviewed-by: Makarand Sonare <makarandsonare@google.com>
Signed-off-by: Ben Gardon <bgardon@google.com>
Message-Id: <20210112214253.463999-5-bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | tools/testing/selftests/kvm/dirty_log_perf_test.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/tools/testing/selftests/kvm/dirty_log_perf_test.c b/tools/testing/selftests/kvm/dirty_log_perf_test.c index 3875f22d72832b..fb6eb7fa0b454c 100644 --- a/tools/testing/selftests/kvm/dirty_log_perf_test.c +++ b/tools/testing/selftests/kvm/dirty_log_perf_test.c @@ -139,14 +139,19 @@ static void run_test(enum vm_guest_mode mode, void *arg) clock_gettime(CLOCK_MONOTONIC, &start); for (vcpu_id = 0; vcpu_id < nr_vcpus; vcpu_id++) { + vcpu_last_completed_iteration[vcpu_id] = -1; + pthread_create(&vcpu_threads[vcpu_id], NULL, vcpu_worker, &perf_test_args.vcpu_args[vcpu_id]); } - /* Allow the vCPU to populate memory */ + /* Allow the vCPUs to populate memory */ pr_debug("Starting iteration %d - Populating\n", iteration); - while (READ_ONCE(vcpu_last_completed_iteration[vcpu_id]) != iteration) - ; + for (vcpu_id = 0; vcpu_id < nr_vcpus; vcpu_id++) { + while (READ_ONCE(vcpu_last_completed_iteration[vcpu_id]) != + iteration) + ; + } ts_diff = timespec_elapsed(start); pr_info("Populate memory time: %ld.%.9lds\n", |