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dtrace_gethrtime() is the high-resolution nanosecond timestemp used for the DTrace 'timestamp' built-in variable. The new implementation uses the EL0 cycle counter and frequency registers in ARMv8-A. This replaces a previous implementation that relied on an instrumentation-safe implementation of getnanotime(), which provided only timer resolution. Approved by: re (gjb) Reviewed by: andrew, bsdimp (older version) Useful comments appreciated: jrtc27, emaste Differential Revision: https://reviews.freebsd.org/D28723 |
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| aarch64 | ||
| amd64 | ||
| arm | ||
| i386 | ||
| mips | ||
| powerpc | ||
| riscv | ||
| x86 | ||
| dtrace_anon.c | ||
| dtrace_cddl.h | ||
| dtrace_debug.c | ||
| dtrace_hacks.c | ||
| dtrace_ioctl.c | ||
| dtrace_load.c | ||
| dtrace_modevent.c | ||
| dtrace_sysctl.c | ||
| dtrace_test.c | ||
| dtrace_unload.c | ||
| dtrace_vtime.c | ||