xnu-6153.11.26.tar.gz

[apple/xnu.git] / tests / perf_kdebug.c

diff --git a/tests/perf_kdebug.c b/tests/perf_kdebug.c
deleted file mode 100644 (file)
index d2861ba..0000000
--- a/tests/perf_kdebug.c
+++ /dev/null
@@ -1,193 +0,0 @@
-#ifdef T_NAMESPACE
-#undef T_NAMESPACE
-#endif
-#include <darwintest.h>
-
-#include <sys/kdebug.h>
-#include <sys/sysctl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-T_GLOBAL_META(
-       T_META_NAMESPACE("xnu.perf.kdebug"),
-       T_META_ASROOT(true),
-       T_META_CHECK_LEAKS(false),
-       T_META_TAG_PERF
-       );
-
-//
-// Helper functions for direct control over the kernel trace facility.
-//
-
-static void
-_sysctl_reset()
-{
-       int mib[] = { CTL_KERN, KERN_KDEBUG, KERN_KDREMOVE };
-       if (sysctl(mib, 3, NULL, NULL, NULL, 0)) {
-               T_FAIL("KERN_KDREMOVE sysctl failed");
-       }
-}
-
-static void
-_sysctl_setbuf(uint32_t capacity)
-{
-       int mib[] = { CTL_KERN, KERN_KDEBUG, KERN_KDSETBUF, (int)capacity };
-       if (sysctl(mib, 4, NULL, NULL, NULL, 0)) {
-               T_FAIL("KERN_KDSETBUF sysctl failed");
-       }
-}
-
-static void
-_sysctl_setup()
-{
-       int mib[] = { CTL_KERN, KERN_KDEBUG, KERN_KDSETUP };
-       if (sysctl(mib, 3, NULL, NULL, NULL, 0)) {
-               T_FAIL("KERN_KDSETUP sysctl failed");
-       }
-}
-
-static void
-_sysctl_enable(int value)
-{
-       int mib[] = { CTL_KERN, KERN_KDEBUG, KERN_KDENABLE, value };
-       if (sysctl(mib, 4, NULL, NULL, NULL, 0) < 0) {
-               T_FAIL("KERN_KDENABLE sysctl failed");
-       }
-}
-
-static void
-_sysctl_enable_typefilter(uint8_t* type_filter_bitmap)
-{
-       int mib[] = { CTL_KERN, KERN_KDEBUG, KERN_KDSET_TYPEFILTER };
-       size_t needed = KDBG_TYPEFILTER_BITMAP_SIZE;
-       if (sysctl(mib, 3, type_filter_bitmap, &needed, NULL, 0)) {
-               T_FAIL("KERN_KDSET_TYPEFILTER sysctl failed");
-       }
-}
-
-static void
-_sysctl_nowrap(bool is_nowrap)
-{
-       int mib[] = { CTL_KERN, KERN_KDEBUG, is_nowrap ? KERN_KDEFLAGS : KERN_KDDFLAGS, KDBG_NOWRAP };
-       if (sysctl(mib, 4, NULL, NULL, NULL, 0)) {
-               T_FAIL("KDBG_NOWRAP sysctl failed");
-       }
-}
-
-static void
-enable_tracing(bool value)
-{
-       _sysctl_enable(value ? KDEBUG_ENABLE_TRACE : 0);
-}
-
-static void
-enable_typefilter_all_reject()
-{
-       uint8_t type_filter_bitmap[KDBG_TYPEFILTER_BITMAP_SIZE];
-       memset(type_filter_bitmap, 0, sizeof(type_filter_bitmap));
-       _sysctl_enable_typefilter(type_filter_bitmap);
-}
-
-static void
-enable_typefilter_all_pass()
-{
-       uint8_t type_filter_bitmap[KDBG_TYPEFILTER_BITMAP_SIZE];
-       memset(type_filter_bitmap, 0xff, sizeof(type_filter_bitmap));
-       _sysctl_enable_typefilter(type_filter_bitmap);
-}
-
-static void
-loop_kdebug_trace(dt_stat_time_t s)
-{
-       do {
-               dt_stat_token start = dt_stat_time_begin(s);
-               for (uint32_t i = 0; i < 100; i++) {
-                       kdebug_trace(0x97000000 | DBG_FUNC_NONE, i, i, i, i);
-                       kdebug_trace(0x97000000 | DBG_FUNC_NONE, i, i, i, i);
-                       kdebug_trace(0x97000000 | DBG_FUNC_NONE, i, i, i, i);
-                       kdebug_trace(0x97000000 | DBG_FUNC_NONE, i, i, i, i);
-                       kdebug_trace(0x97000000 | DBG_FUNC_NONE, i, i, i, i);
-                       kdebug_trace(0x97000000 | DBG_FUNC_NONE, i, i, i, i);
-                       kdebug_trace(0x97000000 | DBG_FUNC_NONE, i, i, i, i);
-                       kdebug_trace(0x97000000 | DBG_FUNC_NONE, i, i, i, i);
-                       kdebug_trace(0x97000000 | DBG_FUNC_NONE, i, i, i, i);
-                       kdebug_trace(0x97000000 | DBG_FUNC_NONE, i, i, i, i);
-               }
-               dt_stat_time_end_batch(s, 1000, start);
-       } while (!dt_stat_stable(s));
-}
-
-static void
-loop_getppid(dt_stat_time_t s)
-{
-       do {
-               dt_stat_token start = dt_stat_time_begin(s);
-               for (uint32_t i = 0; i < 100; i++) {
-                       getppid();
-                       getppid();
-                       getppid();
-                       getppid();
-                       getppid();
-                       getppid();
-                       getppid();
-                       getppid();
-                       getppid();
-                       getppid();
-               }
-               dt_stat_time_end_batch(s, 1000, start);
-       } while (!dt_stat_stable(s));
-}
-
-static void
-reset_kdebug_trace(void)
-{
-       _sysctl_reset();
-}
-
-static void
-test(const char* test_name, void (^pretest_setup)(void), void (*test)(dt_stat_time_t s))
-{
-       T_ATEND(reset_kdebug_trace);
-       _sysctl_reset();
-       _sysctl_setbuf(1000000);
-       _sysctl_nowrap(false);
-       _sysctl_setup();
-
-       pretest_setup();
-
-       dt_stat_time_t s = dt_stat_time_create("%s", test_name);
-
-       test(s);
-
-       dt_stat_finalize(s);
-}
-
-//
-// Begin tests...
-//
-
-T_DECL(kdebug_trace_baseline_syscall,
-    "Test the latency of a syscall while kernel tracing is disabled") {
-       test("kdebug_trace_baseline_syscall", ^{ enable_tracing(false); }, loop_getppid);
-}
-
-T_DECL(kdebug_trace_kdbg_disabled,
-    "Test the latency of kdebug_trace while kernel tracing is disabled") {
-       test("kdebug_trace_kdbg_disabled", ^{ enable_tracing(false); }, loop_kdebug_trace);
-}
-
-T_DECL(kdebug_trace_kdbg_enabled,
-    "Test the latency of kdebug_trace while kernel tracing is enabled with no typefilter") {
-       test("kdebug_trace_kdbg_enabled", ^{ enable_tracing(true); }, loop_kdebug_trace);
-}
-
-T_DECL(kdebug_trace_kdbg_enabled_typefilter_pass,
-    "Test the latency of kdebug_trace while kernel tracing is enabled with a typefilter that passes the event") {
-       test("kdebug_trace_kdbg_enabled_typefilter_pass", ^{ enable_tracing(true); enable_typefilter_all_pass(); }, loop_kdebug_trace);
-}
-
-T_DECL(kdebug_trace_kdbg_enabled_typefilter_reject,
-    "Test the latency of kdebug_trace while kernel tracing is enabled with a typefilter that rejects the event") {
-       test("kdebug_trace_kdbg_enabled_typefilter_reject", ^{ enable_tracing(true); enable_typefilter_all_reject(); }, loop_kdebug_trace);
-}