1*fdd8201dSApple OSS Distributions #include <sys/sysctl.h> 2*fdd8201dSApple OSS Distributions 3*fdd8201dSApple OSS Distributions #include <darwintest.h> 4*fdd8201dSApple OSS Distributions #include <darwintest_perf.h> 5*fdd8201dSApple OSS Distributions 6*fdd8201dSApple OSS Distributions T_GLOBAL_META( 7*fdd8201dSApple OSS Distributions T_META_NAMESPACE("xnu.arm"), 8*fdd8201dSApple OSS Distributions T_META_RADAR_COMPONENT_NAME("xnu"), 9*fdd8201dSApple OSS Distributions T_META_RADAR_COMPONENT_VERSION("arm"), 10*fdd8201dSApple OSS Distributions T_META_OWNER("jharmening") 11*fdd8201dSApple OSS Distributions ); 12*fdd8201dSApple OSS Distributions 13*fdd8201dSApple OSS Distributions T_DECL(pmap_call_benchmark, "pmap call overhead benchmark") 14*fdd8201dSApple OSS Distributions { 15*fdd8201dSApple OSS Distributions int num_loops = 100000; 16*fdd8201dSApple OSS Distributions dt_stat_time_t s = dt_stat_time_create("average pmap function call overhead for %d calls", num_loops); 17*fdd8201dSApple OSS Distributions while (!dt_stat_stable(s)) { 18*fdd8201dSApple OSS Distributions dt_stat_token start = dt_stat_time_begin(s); 19*fdd8201dSApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(sysctlbyname("kern.pmap_call_overhead_test", NULL, NULL, 20*fdd8201dSApple OSS Distributions &num_loops, sizeof(num_loops)), "invoke pmap call overhead test sysctl"); 21*fdd8201dSApple OSS Distributions dt_stat_time_end_batch(s, num_loops, start); 22*fdd8201dSApple OSS Distributions } 23*fdd8201dSApple OSS Distributions dt_stat_finalize(s); 24*fdd8201dSApple OSS Distributions } 25*fdd8201dSApple OSS Distributions 26*fdd8201dSApple OSS Distributions T_DECL(pmap_page_protect_benchmark, "pmap_page_protect() overhead benchmark") 27*fdd8201dSApple OSS Distributions { 28*fdd8201dSApple OSS Distributions struct { 29*fdd8201dSApple OSS Distributions unsigned int num_loops; 30*fdd8201dSApple OSS Distributions unsigned int num_aliases; 31*fdd8201dSApple OSS Distributions } ppo_in; 32*fdd8201dSApple OSS Distributions ppo_in.num_loops = 1000; 33*fdd8201dSApple OSS Distributions uint64_t duration; 34*fdd8201dSApple OSS Distributions size_t duration_size = sizeof(duration); 35*fdd8201dSApple OSS Distributions for (ppo_in.num_aliases = 1; ppo_in.num_aliases <= 128; ppo_in.num_aliases <<= 1) { 36*fdd8201dSApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(sysctlbyname("kern.pmap_page_protect_overhead_test", 37*fdd8201dSApple OSS Distributions &duration, &duration_size, &ppo_in, sizeof(ppo_in)), 38*fdd8201dSApple OSS Distributions "invoke pmap_page_protect() overhead test sysctl"); 39*fdd8201dSApple OSS Distributions T_LOG("%u-loop duration (in ticks) for %u aliases: %llu", ppo_in.num_loops, ppo_in.num_aliases, duration); 40*fdd8201dSApple OSS Distributions } 41*fdd8201dSApple OSS Distributions } 42