Changes in Makefile

6e32e8d7d16148e9bad1e3544363f318582f4c13 - sdt: Enable on 32-bit powerpc and powerpc64le

Wed, 04 Feb 2026 15:48:34 +0100

sdt: Enable on 32-bit powerpc and powerpc64leReviewed by: jhibbits, adrianMFC after: 1 weekDifferential Revision: https://reviews.freebsd.org/D54814 List of files: /freebsd/sys/modules/dtrace/Makefile

1e734f15c7099408f45d3b1ea433868d0468916f - dtrace: Build systrace_freebsd32 only if COMPAT_FREEBSD32 is configured

Wed, 22 Jan 2025 22:26:07 +0100

dtrace: Build systrace_freebsd32 only if COMPAT_FREEBSD32 is configuredMFC after: 1 weekSponsored by: Innovate UK List of files: /freebsd/sys/modules/dtrace/Makefile

e9ac41698b2f322d55ccf9da50a3596edb2c1800 - Remove residual blank line at start of Makefile

Mon, 15 Jul 2024 06:46:32 +0200

Remove residual blank line at start of MakefileThis is a residual of the $FreeBSD$ removal.MFC After: 3 days (though I'll just run the command on the branches)Sponsored by: Netflix List of files: /freebsd/sys/modules/dtrace/Makefile

ddf0ed09bd8f83677407db36828aca2c10f419c9 - sdt: Implement SDT probes using hot-patching

Wed, 19 Jun 2024 22:57:09 +0200

sdt: Implement SDT probes using hot-patchingThe idea here is to avoid a memory access and conditional branch perprobe site. Instead, the probe is represented by an "unreachable"unconditional function call. asm goto is used to store the address ofthe probe site (represented by a no-op sled) and the address of thefunction call into a tracepoint record. Each SDT probe carries a listof tracepoints.When the probe is enabled, the no-op sled corresponding to eachtracepoint is overwritten with a jmp to the corresponding label. Theimplementation uses smp_rendezvous() to park all other CPUs while theinstruction is being overwritten, as this can't be done atomically ingeneral. The compiler moves argument marshalling code and thesdt_probe() function call out-of-line, i.e., to the end of the function.Per gallatin@ in D43504, this approach has less overhead when probes aredisabled. To make the implementation a bit simpler, I removed supportfor probes with 7 arguments; nothing makes use of this except aregression test case. It could be re-added later if need be.The approach taken in this patch enables some more improvements:1. We can now automatically fill out the "function" field of SDT probe names. The SDT macros let the programmer specify the function and module names, but this is really a bug and shouldn't have been allowed. The intent was to be able to have the same probe in multiple functions and to let the user restrict which probes actually get enabled by specifying a function name or glob.2. We can avoid branching on SDT_PROBES_ENABLED() by adding the ability to include blocks of code in the out-of-line path. For example: if (SDT_PROBES_ENABLED()) { int reason = CLD_EXITED; if (WCOREDUMP(signo)) reason = CLD_DUMPED; else if (WIFSIGNALED(signo)) reason = CLD_KILLED; SDT_PROBE1(proc, , , exit, reason); }could be written SDT_PROBE1_EXT(proc, , , exit, reason, int reason; reason = CLD_EXITED; if (WCOREDUMP(signo)) reason = CLD_DUMPED; else if (WIFSIGNALED(signo)) reason = CLD_KILLED; );In the future I would like to use this mechanism more generally, e.g.,to remove branches and marshalling code used by hwpmc, and generally tomake it easier to add new tracepoint consumers without having to addmore conditional branches to hot code paths.Reviewed by: Domagoj Stolfa, avgMFC after: 2 monthsDifferential Revision: https://reviews.freebsd.org/D44483 List of files: /freebsd/sys/modules/dtrace/Makefile

031beb4e239bfce798af17f5fe8dba8bcaf13d99 - sys: Remove $FreeBSD$: one-line sh pattern

Wed, 16 Aug 2023 19:54:58 +0200

sys: Remove $FreeBSD$: one-line sh patternRemove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/ List of files: /freebsd/sys/modules/dtrace/Makefile

07864a8a2466b8ab3d6fa6623a7eaaf0834c0b51 - kinst: port to arm64

Wed, 19 Jul 2023 16:58:18 +0200

kinst: port to arm64Reviewed by: markjApproved by: markj (mentor)Sponsored by: The FreeBSD FoundationDifferential Revision: https://reviews.freebsd.org/D40337 List of files: /freebsd/sys/modules/dtrace/Makefile

2d7bb03adb43dd605464db3a9634ff33bf74ca5f - kinst: port to riscv

Tue, 04 Jul 2023 17:38:01 +0200

kinst: port to riscvReviewed by: markjApproved by: markj (mentor)Sponsored by: The FreeBSD FoundationDifferential Revision: https://reviews.freebsd.org/D39884 List of files: /freebsd/sys/modules/dtrace/Makefile

10eed6bc2bc84a646241a05def3f2542af5df79e - dtrace: include fbt module unconditionally

Wed, 11 Jan 2023 19:05:18 +0100

dtrace: include fbt module unconditionallyIt is supported on all platforms.Reviewed by: markjSponsored by: The FreeBSD FoundationDifferential Revision: https://reviews.freebsd.org/D37658 List of files: /freebsd/sys/modules/dtrace/Makefile

fe4a5593b35a29ddef2b78cb836c213dcb2daada - dtrace: Add pid provider to the build for powerpc

Sun, 30 Oct 2022 20:40:05 +0100

dtrace: Add pid provider to the build for powerpcThe fasttrap pid provider has been in place for a long time, but stoppedgetting built by efe88d92da in preparation for 64-bit atomics. 32-bitemulation of 64-bit atomics was added in 9aafc7c05.MFC after: 3 weeks List of files: /freebsd/sys/modules/dtrace/Makefile

f0bc4ed144fc59b6f72d90c46b91ca803d3b29ce - kinst: Initial revision

Tue, 11 Oct 2022 17:28:17 +0200

kinst: Initial revisionThis is a new DTrace provider which allows arbitrary kernel instructionsto be traced. Currently it is implemented only for amd64.kinst probes are created on demand by libdtrace, and there is a probefor each kernel instruction. Probes are namedkinst:::, where "offset" is the offset of thetarget 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 thetarget instruction and hooks into the kernel breakpoint handler.Because kinst has to be able to trace arbitrary instructions, it doesnot emulate most of them in software but rather causes the traced threadto execute a copy of the instruction before returning to the originalcode.The provider is quite low-level and as-is will be useful mostly only tokernel developers. However, it provides a great deal of visibility intokernel code execution and could be used as a building block forhigher-level tooling which can in some sense translate between C sourcesand generated machine code. In particular, the "regs" variable recentlyadded to D allows the CPU's register file to be accessed from kinstprobes.kinst is experimental and should not be used on production systems fornow.In collaboration with: markjSponsored by: Google, Inc. (GSoC 2022)MFC after: 3 monthsDifferential Revision: https://reviews.freebsd.org/D36851 List of files: /freebsd/sys/modules/dtrace/Makefile

c66fd95c8f87f14a32b0b6091e4f0fc7b3f6eca3 - mips: Remove dtrace build support

Fri, 31 Dec 2021 23:04:30 +0100

mips: Remove dtrace build supportSponsored by: Netflix List of files: /freebsd/sys/modules/dtrace/Makefile

18b18078f267ba10cf14348bc333f2f81818f472 - MFhead@r344527

Mon, 25 Feb 2019 19:00:14 +0100

MFhead@r344527 List of files: /freebsd/sys/modules/dtrace/Makefile

a8fe8db49af4c10e35349ffff217caf3c3df7f72 - Merge ^/head r344178 through r344512.

Mon, 25 Feb 2019 12:59:29 +0100

Merge ^/head r344178 through r344512. List of files: /freebsd/sys/modules/dtrace/Makefile

efe88d92da775d8f13287251b0cc9993b1410be0 - Disconnect fasttrap from the 32-bit powerpc build.

Thu, 21 Feb 2019 23:49:21 +0100

Disconnect fasttrap from the 32-bit powerpc build.An upcoming bug fix requires 64-bit atomics, which aren't implemented onpowerpc. The powerpc port of fasttrap is incomplete anyway and doesn'tget loaded by dtraceall.ko on powerpc because of a missing dependency;it's presumed that it's effectively unused.Discussed with: jhibbitsMFC after: 2 weeks List of files: /freebsd/sys/modules/dtrace/Makefile

c79126f2e4b31976a54d1c30961d8c7b0f740a3c - Merge ^/head r327624 through r327885.

Fri, 12 Jan 2018 19:23:35 +0100

Merge ^/head r327624 through r327885. List of files: /freebsd/sys/modules/dtrace/Makefile

05f08f29789c78b799cd363594eba841cd7d811f - Build systrace_freebsd32 on arm64.

Thu, 11 Jan 2018 22:17:05 +0100

Build systrace_freebsd32 on arm64.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, gnnDifferential Revision: https://reviews.freebsd.org/D13670 List of files: /freebsd/sys/modules/dtrace/Makefile

b754c27916c5d1b0fe2f57d6d4ba94c7de1b541b - MFH @ r323558.

Wed, 13 Sep 2017 21:12:28 +0200

MFH @ r323558. List of files: /freebsd/sys/modules/dtrace/Makefile

5be4ad9e80b9759efbf7f8edeca2776c71e52ca2 - MFhead@r323343

Sat, 09 Sep 2017 07:42:23 +0200

MFhead@r323343 List of files: /freebsd/sys/modules/dtrace/Makefile

a8273e437196ecc8e40c818d372f674b69adec09 - Enable dtrace support for mips64 and the ERL kernel config

Wed, 06 Sep 2017 05:19:52 +0200

Enable dtrace support for mips64 and the ERL kernel configTurn on the required options in the ERL config file, and ensurethat the fbt module is listed as a dependency for mips inthe modules/dtrace/dtraceall/dtraceall.c file.PR: 220346Reviewed by: gnn, markjMFC after: 2 weeksDifferential Revision: https://reviews.freebsd.org/D12227 List of files: /freebsd/sys/modules/dtrace/Makefile

1811d6bf7f1a70cc823919345c5f3d2e4711019e - Add an experimental DTrace audit provider, which allows users of DTrace to

Wed, 29 Mar 2017 21:58:00 +0200

Add an experimental DTrace audit provider, which allows users of DTrace toinstrument security event auditing rather than relying on conventional BSMtrail files or audit pipes:- Add a set of per-event 'commit' probes, which provide access to particular auditable events at the time of commit in system-call return. These probes gain access to audit data via the in-kernel audit_record data structure, providing convenient access to system-call arguments and return values in a single probe.- Add a set of per-event 'bsm' probes, which provide access to particular auditable events at the time of BSM record generation in the audit worker thread. These probes have access to the in-kernel audit_record data structure and BSM representation as would be written to a trail file or audit pipe -- i.e., asynchronously in the audit worker thread.DTrace probe arguments consist of the name of the audit event (to supportfuture mechanisms of instrumenting multiple events via a single probe --e.g., using classes), a pointer to the in-kernel audit record, and anoptional pointer to the BSM data and its length. For human convenience,upper-case audit event names (AUE_...) are converted to lower case inDTrace.DTrace scripts can now cause additional audit-based data to be collectedon system calls, and inspect internal and BSM representations of the data.They do not affect data captured in the audit trail or audit pipesconfigured in the system. auditd(8) must be configured and running inorder to provide a database of event information, as well as other auditconfiguration parameters (e.g., to capture command-line arguments orenvironmental variables) for the provider to operate.Reviewed by: gnn, jonathan, markjSponsored by: DARPA, AFRLMFC after: 3 weeksDifferential Revision: https://reviews.freebsd.org/D10149 List of files: /freebsd/sys/modules/dtrace/Makefile