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A
1#include <sys/sysctl.h>
2#include <time.h>
3
4#include <darwintest.h>
5
6/*
7 * trying phys offsets from start of dram of:
8 * watchOS 512Meg
9 * macOS 3Gig
10 * iOS,etc. 750Meg
11 */
12#if TARGET_OS_WATCH
13#define USEBOOTARG "bad_ram_pages=536870912 bad_static_mfree=1"
14#elif TARGET_OS_OSX
15#define USEBOOTARG "bad_ram_pages=3221225472 bad_static_mfree=1"
16#else
17#define USEBOOTARG "bad_ram_pages=786432000 bad_static_mfree=1"
18#endif
19
20T_DECL(retired_pages_test,
21 "Test retiring pages at boot",
22 T_META_NAMESPACE("xnu.vm"),
23 T_META_BOOTARGS_SET(USEBOOTARG),
24 T_META_ASROOT(true),
25 T_META_CHECK_LEAKS(false))
26{
27 int err;
28 unsigned int count = 0;
29 size_t s = sizeof(count);
30
31#if !defined(__arm64__) || TARGET_OS_BRIDGE
32 T_SKIP("No page retirement on x86, arm32 or bridgeOS kernels");
33#endif
34 /*
35 * Get the number of pages retired from the kernel
36 */
37 err = sysctlbyname("vm.retired_pages_count", &count, &s, NULL, 0);
38
39 /* If the sysctl isn't supported, test succeeds */
40 if (err == ENOENT) {
41 T_SKIP("sysctl vm.retired_pages_count not found, skipping test");
42 }
43 T_ASSERT_POSIX_SUCCESS(err, "sysctl vm.retired_pages_count");
44
45 T_ASSERT_GT_INT(count, 0, "Expect retired pages");
46}