1*42e22086SApple OSS Distributions #include <sys/sysctl.h> 2*42e22086SApple OSS Distributions 3*42e22086SApple OSS Distributions #include <darwintest.h> 4*42e22086SApple OSS Distributions #include <darwintest_perf.h> 5*42e22086SApple OSS Distributions 6*42e22086SApple OSS Distributions T_GLOBAL_META( 7*42e22086SApple OSS Distributions T_META_NAMESPACE("xnu.arm"), 8*42e22086SApple OSS Distributions T_META_RADAR_COMPONENT_NAME("xnu"), 9*42e22086SApple OSS Distributions T_META_RADAR_COMPONENT_VERSION("arm"), 10*42e22086SApple OSS Distributions T_META_OWNER("jharmening") 11*42e22086SApple OSS Distributions ); 12*42e22086SApple OSS Distributions 13*42e22086SApple OSS Distributions T_DECL(pmap_call_benchmark, "pmap call overhead benchmark") 14*42e22086SApple OSS Distributions { 15*42e22086SApple OSS Distributions int num_loops = 100000; 16*42e22086SApple OSS Distributions dt_stat_time_t s = dt_stat_time_create("average pmap function call overhead for %d calls", num_loops); 17*42e22086SApple OSS Distributions while (!dt_stat_stable(s)) { 18*42e22086SApple OSS Distributions dt_stat_token start = dt_stat_time_begin(s); 19*42e22086SApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(sysctlbyname("kern.pmap_call_overhead_test", NULL, NULL, 20*42e22086SApple OSS Distributions &num_loops, sizeof(num_loops)), "invoke pmap call overhead test sysctl"); 21*42e22086SApple OSS Distributions dt_stat_time_end_batch(s, num_loops, start); 22*42e22086SApple OSS Distributions } 23*42e22086SApple OSS Distributions dt_stat_finalize(s); 24*42e22086SApple OSS Distributions } 25*42e22086SApple OSS Distributions 26*42e22086SApple OSS Distributions T_DECL(pmap_page_protect_benchmark, "pmap_page_protect() overhead benchmark") 27*42e22086SApple OSS Distributions { 28*42e22086SApple OSS Distributions struct { 29*42e22086SApple OSS Distributions unsigned int num_loops; 30*42e22086SApple OSS Distributions unsigned int num_aliases; 31*42e22086SApple OSS Distributions } ppo_in; 32*42e22086SApple OSS Distributions ppo_in.num_loops = 1000; 33*42e22086SApple OSS Distributions uint64_t duration; 34*42e22086SApple OSS Distributions size_t duration_size = sizeof(duration); 35*42e22086SApple OSS Distributions for (ppo_in.num_aliases = 1; ppo_in.num_aliases <= 128; ppo_in.num_aliases <<= 1) { 36*42e22086SApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(sysctlbyname("kern.pmap_page_protect_overhead_test", 37*42e22086SApple OSS Distributions &duration, &duration_size, &ppo_in, sizeof(ppo_in)), 38*42e22086SApple OSS Distributions "invoke pmap_page_protect() overhead test sysctl"); 39*42e22086SApple OSS Distributions T_LOG("%u-loop duration (in ticks) for %u aliases: %llu", ppo_in.num_loops, ppo_in.num_aliases, duration); 40*42e22086SApple OSS Distributions } 41*42e22086SApple OSS Distributions } 42