4fd94ec7d5
The dirty log perf test will time verious dirty logging operations (enabling dirty logging, dirtying memory, getting the dirty log, clearing the dirty log, and disabling dirty logging) in order to quantify dirty logging performance. This test can be used to inform future performance improvements to KVM's dirty logging infrastructure. This series was tested by running the following invocations on an Intel Skylake machine: dirty_log_perf_test -b 20m -i 100 -v 64 dirty_log_perf_test -b 20g -i 5 -v 4 dirty_log_perf_test -b 4g -i 5 -v 32 demand_paging_test -b 20m -v 64 demand_paging_test -b 20g -v 4 demand_paging_test -b 4g -v 32 All behaved as expected. Signed-off-by: Ben Gardon <bgardon@google.com> Message-Id: <20201027233733.1484855-6-bgardon@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* tools/testing/selftests/kvm/include/test_util.h
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*
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* Copyright (C) 2018, Google LLC.
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*/
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#ifndef SELFTEST_KVM_TEST_UTIL_H
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#define SELFTEST_KVM_TEST_UTIL_H
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#include <stdlib.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <string.h>
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#include <inttypes.h>
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#include <errno.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "kselftest.h"
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static inline int _no_printf(const char *format, ...) { return 0; }
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#ifdef DEBUG
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#define pr_debug(...) printf(__VA_ARGS__)
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#else
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#define pr_debug(...) _no_printf(__VA_ARGS__)
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#endif
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#ifndef QUIET
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#define pr_info(...) printf(__VA_ARGS__)
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#else
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#define pr_info(...) _no_printf(__VA_ARGS__)
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#endif
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void print_skip(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
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ssize_t test_write(int fd, const void *buf, size_t count);
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ssize_t test_read(int fd, void *buf, size_t count);
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int test_seq_read(const char *path, char **bufp, size_t *sizep);
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void test_assert(bool exp, const char *exp_str,
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const char *file, unsigned int line, const char *fmt, ...)
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__attribute__((format(printf, 5, 6)));
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#define TEST_ASSERT(e, fmt, ...) \
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test_assert((e), #e, __FILE__, __LINE__, fmt, ##__VA_ARGS__)
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#define ASSERT_EQ(a, b) do { \
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typeof(a) __a = (a); \
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typeof(b) __b = (b); \
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TEST_ASSERT(__a == __b, \
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"ASSERT_EQ(%s, %s) failed.\n" \
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"\t%s is %#lx\n" \
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"\t%s is %#lx", \
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#a, #b, #a, (unsigned long) __a, #b, (unsigned long) __b); \
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} while (0)
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#define TEST_FAIL(fmt, ...) \
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TEST_ASSERT(false, fmt, ##__VA_ARGS__)
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size_t parse_size(const char *size);
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int64_t timespec_to_ns(struct timespec ts);
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struct timespec timespec_add_ns(struct timespec ts, int64_t ns);
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struct timespec timespec_add(struct timespec ts1, struct timespec ts2);
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struct timespec timespec_sub(struct timespec ts1, struct timespec ts2);
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struct timespec timespec_diff_now(struct timespec start);
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struct timespec timespec_div(struct timespec ts, int divisor);
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#endif /* SELFTEST_KVM_TEST_UTIL_H */
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