src/sys/modules/dtrace/Makefile, branch release/14.3.0

dtrace: Build systrace_freebsd32 only if COMPAT_FREEBSD32 is configured

2025-01-30T15:23:04Z

MFC after: 1 week Sponsored by: Innovate UK (cherry picked from commit 1e734f15c7099408f45d3b1ea433868d0468916f)

sys: Remove $FreeBSD$: one-line sh pattern

2023-08-16T17:54:58Z

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

kinst: port to arm64

2023-07-19T14:58:18Z

Reviewed by: markj Approved by: markj (mentor) Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D40337

kinst: port to riscv

2023-07-04T15:38:01Z

Reviewed by: markj Approved by: markj (mentor) Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D39884

dtrace: include fbt module unconditionally

2023-01-12T15:04:36Z

It is supported on all platforms. Reviewed by: markj Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D37658

dtrace: Add pid provider to the build for powerpc

2022-10-30T20:00:56Z

The fasttrap pid provider has been in place for a long time, but stopped getting built by efe88d92da in preparation for 64-bit atomics. 32-bit emulation of 64-bit atomics was added in 9aafc7c05. MFC after: 3 weeks

kinst: Initial revision

2022-10-11T22:19:08Z

This is a new DTrace provider which allows arbitrary kernel instructions to be traced. Currently it is implemented only for amd64. kinst probes are created on demand by libdtrace, and there is a probe for each kernel instruction. Probes are named kinst:::, where "offset" is the offset of the target instruction relative to the beginning of the function. Omitting "offset" causes all instructions in the function to be traced. kinst works similarly to FBT in that it places a breakpoint on the target instruction and hooks into the kernel breakpoint handler. Because kinst has to be able to trace arbitrary instructions, it does not emulate most of them in software but rather causes the traced thread to execute a copy of the instruction before returning to the original code. The provider is quite low-level and as-is will be useful mostly only to kernel developers. However, it provides a great deal of visibility into kernel code execution and could be used as a building block for higher-level tooling which can in some sense translate between C sources and generated machine code. In particular, the "regs" variable recently added to D allows the CPU's register file to be accessed from kinst probes. kinst is experimental and should not be used on production systems for now. In collaboration with: markj Sponsored by: Google, Inc. (GSoC 2022) MFC after: 3 months Differential Revision: https://reviews.freebsd.org/D36851

mips: Remove dtrace build support

2021-12-31T22:09:46Z

Disconnect fasttrap from the 32-bit powerpc build.

2019-02-21T22:49:21Z

An upcoming bug fix requires 64-bit atomics, which aren't implemented on powerpc. The powerpc port of fasttrap is incomplete anyway and doesn't get loaded by dtraceall.ko on powerpc because of a missing dependency; it's presumed that it's effectively unused. Discussed with: jhibbits MFC after: 2 weeks

Build systrace_freebsd32 on arm64.

2018-01-11T21:17:05Z

Since r326501 which added COMPAT_FREEBSD32 to the GENERIC config for arm64, we need to build systrace_freebsd32, since dtraceall depends on it. Reviewed by: ed, gnn Differential Revision: https://reviews.freebsd.org/D13670