diff options
author | Colton Lewis <coltonlewis@google.com> | 2022-11-07 21:22:06 +0300 |
---|---|---|
committer | Sean Christopherson <seanjc@google.com> | 2022-11-16 21:17:31 +0300 |
commit | f11aa24bdbc66a10378d28ee962b95426e8d2a09 (patch) | |
tree | 6391d54a54837b01473fe7cde5c50f728b411c44 /tools/testing/selftests/kvm/lib/perf_test_util.c | |
parent | b31f21a7e97eee501db86714868d84377e68e4df (diff) | |
download | linux-f11aa24bdbc66a10378d28ee962b95426e8d2a09.tar.xz |
KVM: selftests: create -r argument to specify random seed
Create a -r argument to specify a random seed. If no argument is
provided, the seed defaults to 1. The random seed is set with
perf_test_set_random_seed() and must be set before guest_code runs to
apply.
Signed-off-by: Colton Lewis <coltonlewis@google.com>
Reviewed-by: David Matlack <dmatlack@google.com>
Link: https://lore.kernel.org/r/20221107182208.479157-3-coltonlewis@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'tools/testing/selftests/kvm/lib/perf_test_util.c')
-rw-r--r-- | tools/testing/selftests/kvm/lib/perf_test_util.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/lib/perf_test_util.c b/tools/testing/selftests/kvm/lib/perf_test_util.c index 3a1d0a44419b..d48ee4f604f0 100644 --- a/tools/testing/selftests/kvm/lib/perf_test_util.c +++ b/tools/testing/selftests/kvm/lib/perf_test_util.c @@ -231,6 +231,12 @@ void perf_test_set_wr_fract(struct kvm_vm *vm, int wr_fract) sync_global_to_guest(vm, perf_test_args); } +void perf_test_set_random_seed(struct kvm_vm *vm, uint32_t random_seed) +{ + perf_test_args.random_seed = random_seed; + sync_global_to_guest(vm, perf_test_args.random_seed); +} + uint64_t __weak perf_test_nested_pages(int nr_vcpus) { return 0; |