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Subject[PATCH 2/6] KVM: selftests: Avoid flooding debug log while populating memory
From
Peter Xu pointed out that a log message printed while waiting for the
memory population phase of the dirty_log_perf_test will flood the debug
logs as there is no delay after printing the message. Since the message
does not provide much value anyway, remove it.

Reviewed-by: Jacob Xu <jacobhxu@google.com>

Signed-off-by: Ben Gardon <bgardon@google.com>
---
tools/testing/selftests/kvm/dirty_log_perf_test.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/tools/testing/selftests/kvm/dirty_log_perf_test.c b/tools/testing/selftests/kvm/dirty_log_perf_test.c
index 16efe6589b43..15a9c45bdb5f 100644
--- a/tools/testing/selftests/kvm/dirty_log_perf_test.c
+++ b/tools/testing/selftests/kvm/dirty_log_perf_test.c
@@ -146,8 +146,7 @@ static void run_test(enum vm_guest_mode mode, void *arg)
/* Allow the vCPU to populate memory */
pr_debug("Starting iteration %lu - Populating\n", iteration);
while (READ_ONCE(vcpu_last_completed_iteration[vcpu_id]) != iteration)
- pr_debug("Waiting for vcpu_last_completed_iteration == %lu\n",
- iteration);
+ ;

ts_diff = timespec_elapsed(start);
pr_info("Populate memory time: %ld.%.9lds\n",
@@ -171,9 +170,9 @@ static void run_test(enum vm_guest_mode mode, void *arg)

pr_debug("Starting iteration %lu\n", iteration);
for (vcpu_id = 0; vcpu_id < nr_vcpus; vcpu_id++) {
- while (READ_ONCE(vcpu_last_completed_iteration[vcpu_id]) != iteration)
- pr_debug("Waiting for vCPU %d vcpu_last_completed_iteration == %lu\n",
- vcpu_id, iteration);
+ while (READ_ONCE(vcpu_last_completed_iteration[vcpu_id])
+ != iteration)
+ ;
}

ts_diff = timespec_elapsed(start);
--
2.30.0.284.gd98b1dd5eaa7-goog
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