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The steal-time test confirms what is reported to the guest as stolen time is consistent with the run_delay reported for the VCPU thread on the host. Both x86_64 and AArch64 have the concept of steal/stolen time so this test is introduced for both architectures. While adding the test we ensure .gitignore has all tests listed (it was missing s390x/resets) and that the Makefile has all tests listed in alphabetical order (not really necessary, but it almost was already...). We also extend the common API with a new num-guest- pages call and a new timespec call. Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
99 lines
1.8 KiB
C
99 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* tools/testing/selftests/kvm/lib/test_util.c
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*
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* Copyright (C) 2020, Google LLC.
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*/
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#include <stdlib.h>
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#include <ctype.h>
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#include <limits.h>
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#include <assert.h>
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#include "test_util.h"
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/*
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* Parses "[0-9]+[kmgt]?".
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*/
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size_t parse_size(const char *size)
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{
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size_t base;
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char *scale;
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int shift = 0;
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TEST_ASSERT(size && isdigit(size[0]), "Need at least one digit in '%s'", size);
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base = strtoull(size, &scale, 0);
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TEST_ASSERT(base != ULLONG_MAX, "Overflow parsing size!");
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switch (tolower(*scale)) {
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case 't':
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shift = 40;
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break;
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case 'g':
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shift = 30;
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break;
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case 'm':
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shift = 20;
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break;
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case 'k':
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shift = 10;
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break;
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case 'b':
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case '\0':
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shift = 0;
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break;
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default:
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TEST_ASSERT(false, "Unknown size letter %c", *scale);
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}
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TEST_ASSERT((base << shift) >> shift == base, "Overflow scaling size!");
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return base << shift;
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}
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int64_t timespec_to_ns(struct timespec ts)
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{
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return (int64_t)ts.tv_nsec + 1000000000LL * (int64_t)ts.tv_sec;
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}
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struct timespec timespec_diff(struct timespec start, struct timespec end)
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{
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struct timespec temp;
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if ((end.tv_nsec - start.tv_nsec) < 0) {
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temp.tv_sec = end.tv_sec - start.tv_sec - 1;
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temp.tv_nsec = 1000000000LL + end.tv_nsec - start.tv_nsec;
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} else {
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temp.tv_sec = end.tv_sec - start.tv_sec;
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temp.tv_nsec = end.tv_nsec - start.tv_nsec;
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}
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return temp;
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}
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struct timespec timespec_add_ns(struct timespec ts, int64_t ns)
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{
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struct timespec res;
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res.tv_sec = ts.tv_sec;
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res.tv_nsec = ts.tv_nsec + ns;
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if (res.tv_nsec > 1000000000UL) {
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res.tv_sec += 1;
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res.tv_nsec -= 1000000000UL;
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}
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return res;
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}
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void print_skip(const char *fmt, ...)
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{
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va_list ap;
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assert(fmt);
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va_start(ap, fmt);
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vprintf(fmt, ap);
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va_end(ap);
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puts(", skipping test");
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}
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