KVM: selftests: Rename perf_test_util.[ch] to memstress.[ch]

Rename the perf_test_util.[ch] files to memstress.[ch]. Symbols are
renamed in the following commit to reduce the amount of churn here in
hopes of playiing nice with git's file rename detection.

The name "memstress" was chosen to better describe the functionality
proveded by this library, which is to create and run a VM that
reads/writes to guest memory on all vCPUs in parallel.

"memstress" also contains the same number of chracters as "perf_test",
making it a drop-in replacement in symbols, e.g. function names, without
impacting line lengths. Also the lack of underscore between "mem" and
"stress" makes it clear "memstress" is a noun.

Signed-off-by: David Matlack <dmatlack@google.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20221012165729.3505266-2-dmatlack@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

1 files changed, 0 insertions, 72 deletions

diff --git a/tools/testing/selftests/kvm/include/perf_test_util.h b/tools/testing/selftests/kvm/include/perf_test_util.h
deleted file mode 100644
index 75ca679059dc..000000000000
--- a/tools/testing/selftests/kvm/include/perf_test_util.h
+++ /dev/null
@@ -1,72 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * tools/testing/selftests/kvm/include/perf_test_util.h
- *
- * Copyright (C) 2020, Google LLC.
- */
-
-#ifndef SELFTEST_KVM_PERF_TEST_UTIL_H
-#define SELFTEST_KVM_PERF_TEST_UTIL_H
-
-#include <pthread.h>
-
-#include "kvm_util.h"
-
-/* Default guest test virtual memory offset */
-#define DEFAULT_GUEST_TEST_MEM		0xc0000000
-
-#define DEFAULT_PER_VCPU_MEM_SIZE	(1 << 30) /* 1G */
-
-#define PERF_TEST_MEM_SLOT_INDEX	1
-
-struct perf_test_vcpu_args {
-	uint64_t gpa;
-	uint64_t gva;
-	uint64_t pages;
-
-	/* Only used by the host userspace part of the vCPU thread */
-	struct kvm_vcpu *vcpu;
-	int vcpu_idx;
-};
-
-struct perf_test_args {
-	struct kvm_vm *vm;
-	/* The starting address and size of the guest test region. */
-	uint64_t gpa;
-	uint64_t size;
-	uint64_t guest_page_size;
-	uint32_t random_seed;
-	uint32_t write_percent;
-
-	/* Run vCPUs in L2 instead of L1, if the architecture supports it. */
-	bool nested;
-	/* Randomize which pages are accessed by the guest. */
-	bool random_access;
-	/* True if all vCPUs are pinned to pCPUs */
-	bool pin_vcpus;
-	/* The vCPU=>pCPU pinning map. Only valid if pin_vcpus is true. */
-	uint32_t vcpu_to_pcpu[KVM_MAX_VCPUS];
-
-	struct perf_test_vcpu_args vcpu_args[KVM_MAX_VCPUS];
-};
-
-extern struct perf_test_args perf_test_args;
-
-struct kvm_vm *perf_test_create_vm(enum vm_guest_mode mode, int nr_vcpus,
-				   uint64_t vcpu_memory_bytes, int slots,
-				   enum vm_mem_backing_src_type backing_src,
-				   bool partition_vcpu_memory_access);
-void perf_test_destroy_vm(struct kvm_vm *vm);
-
-void perf_test_set_write_percent(struct kvm_vm *vm, uint32_t write_percent);
-void perf_test_set_random_seed(struct kvm_vm *vm, uint32_t random_seed);
-void perf_test_set_random_access(struct kvm_vm *vm, bool random_access);
-
-void perf_test_start_vcpu_threads(int vcpus, void (*vcpu_fn)(struct perf_test_vcpu_args *));
-void perf_test_join_vcpu_threads(int vcpus);
-void perf_test_guest_code(uint32_t vcpu_id);
-
-uint64_t perf_test_nested_pages(int nr_vcpus);
-void perf_test_setup_nested(struct kvm_vm *vm, int nr_vcpus, struct kvm_vcpu *vcpus[]);
-
-#endif /* SELFTEST_KVM_PERF_TEST_UTIL_H */