1*a1e26a70SApple OSS Distributions #include <darwintest.h> 2*a1e26a70SApple OSS Distributions #include <sys/sysctl.h> 3*a1e26a70SApple OSS Distributions #include <sys/errno.h> 4*a1e26a70SApple OSS Distributions 5*a1e26a70SApple OSS Distributions #define MAX_TASK_PMEM "kern.max_task_pmem" 6*a1e26a70SApple OSS Distributions #define HW_MEMSIZE_STR "hw.memsize" 7*a1e26a70SApple OSS Distributions #define HW_MEMSIZE_THRESHOLD 600 * 1024 * 1024 8*a1e26a70SApple OSS Distributions 9*a1e26a70SApple OSS Distributions T_GLOBAL_META( 10*a1e26a70SApple OSS Distributions T_META_NAMESPACE("xnu.vm"), 11*a1e26a70SApple OSS Distributions T_META_RADAR_COMPONENT_NAME("xnu"), 12*a1e26a70SApple OSS Distributions T_META_RADAR_COMPONENT_VERSION("VM")); 13*a1e26a70SApple OSS Distributions 14*a1e26a70SApple OSS Distributions /* 15*a1e26a70SApple OSS Distributions * Embedded Device having physical memory greater than 600MB should have positive 16*a1e26a70SApple OSS Distributions * value for kern.max_task_pmem if present. 17*a1e26a70SApple OSS Distributions * Strategy: 18*a1e26a70SApple OSS Distributions * Fetch hw.memsize for the device. 19*a1e26a70SApple OSS Distributions * If hw.memsize > 600MB, and kern.max_task_pmem is present, assert that 20*a1e26a70SApple OSS Distributions * kern.max_task_pmem is set to value > 0. 21*a1e26a70SApple OSS Distributions */ 22*a1e26a70SApple OSS Distributions T_DECL(kern_max_task_pmem, 23*a1e26a70SApple OSS Distributions "Embedded platforms should have a positive value for kern.max_task_pmem when hw.memsize > 600MB", 24*a1e26a70SApple OSS Distributions T_META_TAG_VM_PREFERRED, 25*a1e26a70SApple OSS Distributions T_META_ENABLED(false /* rdar://133954365 */)) 26*a1e26a70SApple OSS Distributions { 27*a1e26a70SApple OSS Distributions int kern_max_task_pmem = 0; 28*a1e26a70SApple OSS Distributions size_t pmem_size = sizeof(kern_max_task_pmem); 29*a1e26a70SApple OSS Distributions 30*a1e26a70SApple OSS Distributions uint64_t hw_memsize = 0; 31*a1e26a70SApple OSS Distributions size_t size_hw_memsize = sizeof(hw_memsize); 32*a1e26a70SApple OSS Distributions 33*a1e26a70SApple OSS Distributions int ret = 0; 34*a1e26a70SApple OSS Distributions 35*a1e26a70SApple OSS Distributions ret = sysctlbyname(HW_MEMSIZE_STR, &hw_memsize, &size_hw_memsize, NULL, 0); 36*a1e26a70SApple OSS Distributions T_ASSERT_POSIX_SUCCESS(ret, "call sysctlbyname to get hardware mem size."); 37*a1e26a70SApple OSS Distributions 38*a1e26a70SApple OSS Distributions T_LOG("Checking if %s > %d", HW_MEMSIZE_STR, HW_MEMSIZE_THRESHOLD); 39*a1e26a70SApple OSS Distributions if (hw_memsize <= HW_MEMSIZE_THRESHOLD) { 40*a1e26a70SApple OSS Distributions T_SKIP("Device has hw.memsize = %lld. Skipping the check for %s", hw_memsize, MAX_TASK_PMEM); 41*a1e26a70SApple OSS Distributions } 42*a1e26a70SApple OSS Distributions 43*a1e26a70SApple OSS Distributions T_LOG("Device has %s = %lld", HW_MEMSIZE_STR, hw_memsize); 44*a1e26a70SApple OSS Distributions T_LOG("Testing for %s ...", MAX_TASK_PMEM); 45*a1e26a70SApple OSS Distributions 46*a1e26a70SApple OSS Distributions ret = sysctlbyname(MAX_TASK_PMEM, &kern_max_task_pmem, &pmem_size, NULL, 0); 47*a1e26a70SApple OSS Distributions T_ASSERT_POSIX_SUCCESS(ret, "call sysctlbyname to get max task physical memory"); 48*a1e26a70SApple OSS Distributions 49*a1e26a70SApple OSS Distributions T_LOG("%s = %d", MAX_TASK_PMEM, kern_max_task_pmem); 50*a1e26a70SApple OSS Distributions T_ASSERT_GT_INT(kern_max_task_pmem, 0, "%s should be greater than 0", MAX_TASK_PMEM); 51*a1e26a70SApple OSS Distributions } 52