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authorAaron Lewis <aaronlewis@google.com>2022-05-17 05:12:37 +0000
committerPaolo Bonzini <pbonzini@redhat.com>2022-05-20 07:06:55 -0400
commit04baa2233d55e85e0f0f5dfe0401ecb027da9a0e (patch)
tree1af612417c71ec63c24926889cb10918a51f74e2
parent4ac19ead0dfbabd8e0bfc731f507cfb0b95d6c99 (diff)
downloadlinux-04baa2233d55e85e0f0f5dfe0401ecb027da9a0e.tar.bz2
selftests: kvm/x86: Add the helper function create_pmu_event_filter
Add a helper function that creates a pmu event filter given an event list. Currently, a pmu event filter can only be created with the same hard coded event list. Add a way to create one given a different event list. Also, rename make_pmu_event_filter to alloc_pmu_event_filter to clarify it's purpose given the introduction of create_pmu_event_filter. No functional changes intended. Signed-off-by: Aaron Lewis <aaronlewis@google.com> Message-Id: <20220517051238.2566934-2-aaronlewis@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c
index 0d06ffa95d9d..30c1a5804210 100644
--- a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c
+++ b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c
@@ -208,7 +208,7 @@ static bool sanity_check_pmu(struct kvm_vm *vm)
return success;
}
-static struct kvm_pmu_event_filter *make_pmu_event_filter(uint32_t nevents)
+static struct kvm_pmu_event_filter *alloc_pmu_event_filter(uint32_t nevents)
{
struct kvm_pmu_event_filter *f;
int size = sizeof(*f) + nevents * sizeof(f->events[0]);
@@ -220,19 +220,29 @@ static struct kvm_pmu_event_filter *make_pmu_event_filter(uint32_t nevents)
return f;
}
-static struct kvm_pmu_event_filter *event_filter(uint32_t action)
+
+static struct kvm_pmu_event_filter *
+create_pmu_event_filter(const uint64_t event_list[],
+ int nevents, uint32_t action)
{
struct kvm_pmu_event_filter *f;
int i;
- f = make_pmu_event_filter(ARRAY_SIZE(event_list));
+ f = alloc_pmu_event_filter(nevents);
f->action = action;
- for (i = 0; i < ARRAY_SIZE(event_list); i++)
+ for (i = 0; i < nevents; i++)
f->events[i] = event_list[i];
return f;
}
+static struct kvm_pmu_event_filter *event_filter(uint32_t action)
+{
+ return create_pmu_event_filter(event_list,
+ ARRAY_SIZE(event_list),
+ action);
+}
+
/*
* Remove the first occurrence of 'event' (if any) from the filter's
* event list.