1*e3723e1fSApple OSS Distributions #include <darwintest.h> 2*e3723e1fSApple OSS Distributions #include <sys/sysctl.h> 3*e3723e1fSApple OSS Distributions #include <sys/errno.h> 4*e3723e1fSApple OSS Distributions 5*e3723e1fSApple OSS Distributions #define MAX_TASK_PMEM "kern.max_task_pmem" 6*e3723e1fSApple OSS Distributions #define HW_MEMSIZE_STR "hw.memsize" 7*e3723e1fSApple OSS Distributions #define HW_MEMSIZE_THRESHOLD 600 * 1024 * 1024 8*e3723e1fSApple OSS Distributions 9*e3723e1fSApple OSS Distributions T_GLOBAL_META( 10*e3723e1fSApple OSS Distributions T_META_NAMESPACE("xnu.vm"), 11*e3723e1fSApple OSS Distributions T_META_RADAR_COMPONENT_NAME("xnu"), 12*e3723e1fSApple OSS Distributions T_META_RADAR_COMPONENT_VERSION("VM")); 13*e3723e1fSApple OSS Distributions 14*e3723e1fSApple OSS Distributions /* 15*e3723e1fSApple OSS Distributions * Embedded Device having physical memory greater than 600MB should have positive 16*e3723e1fSApple OSS Distributions * value for kern.max_task_pmem if present. 17*e3723e1fSApple OSS Distributions * Strategy: 18*e3723e1fSApple OSS Distributions * Fetch hw.memsize for the device. 19*e3723e1fSApple OSS Distributions * If hw.memsize > 600MB, and kern.max_task_pmem is present, assert that 20*e3723e1fSApple OSS Distributions * kern.max_task_pmem is set to value > 0. 21*e3723e1fSApple OSS Distributions */ 22*e3723e1fSApple OSS Distributions T_DECL(kern_max_task_pmem, 23*e3723e1fSApple OSS Distributions "Embedded platforms should have a positive value for kern.max_task_pmem when hw.memsize > 600MB", 24*e3723e1fSApple OSS Distributions T_META_TAG_VM_PREFERRED, 25*e3723e1fSApple OSS Distributions T_META_ENABLED(false /* rdar://133954365 */)) 26*e3723e1fSApple OSS Distributions { 27*e3723e1fSApple OSS Distributions int kern_max_task_pmem = 0; 28*e3723e1fSApple OSS Distributions size_t pmem_size = sizeof(kern_max_task_pmem); 29*e3723e1fSApple OSS Distributions 30*e3723e1fSApple OSS Distributions uint64_t hw_memsize = 0; 31*e3723e1fSApple OSS Distributions size_t size_hw_memsize = sizeof(hw_memsize); 32*e3723e1fSApple OSS Distributions 33*e3723e1fSApple OSS Distributions int ret = 0; 34*e3723e1fSApple OSS Distributions 35*e3723e1fSApple OSS Distributions ret = sysctlbyname(HW_MEMSIZE_STR, &hw_memsize, &size_hw_memsize, NULL, 0); 36*e3723e1fSApple OSS Distributions T_ASSERT_POSIX_SUCCESS(ret, "call sysctlbyname to get hardware mem size."); 37*e3723e1fSApple OSS Distributions 38*e3723e1fSApple OSS Distributions T_LOG("Checking if %s > %d", HW_MEMSIZE_STR, HW_MEMSIZE_THRESHOLD); 39*e3723e1fSApple OSS Distributions if (hw_memsize <= HW_MEMSIZE_THRESHOLD) { 40*e3723e1fSApple OSS Distributions T_SKIP("Device has hw.memsize = %lld. Skipping the check for %s", hw_memsize, MAX_TASK_PMEM); 41*e3723e1fSApple OSS Distributions } 42*e3723e1fSApple OSS Distributions 43*e3723e1fSApple OSS Distributions T_LOG("Device has %s = %lld", HW_MEMSIZE_STR, hw_memsize); 44*e3723e1fSApple OSS Distributions T_LOG("Testing for %s ...", MAX_TASK_PMEM); 45*e3723e1fSApple OSS Distributions 46*e3723e1fSApple OSS Distributions ret = sysctlbyname(MAX_TASK_PMEM, &kern_max_task_pmem, &pmem_size, NULL, 0); 47*e3723e1fSApple OSS Distributions T_ASSERT_POSIX_SUCCESS(ret, "call sysctlbyname to get max task physical memory"); 48*e3723e1fSApple OSS Distributions 49*e3723e1fSApple OSS Distributions T_LOG("%s = %d", MAX_TASK_PMEM, kern_max_task_pmem); 50*e3723e1fSApple OSS Distributions T_ASSERT_GT_INT(kern_max_task_pmem, 0, "%s should be greater than 0", MAX_TASK_PMEM); 51*e3723e1fSApple OSS Distributions } 52