FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=release%2F14.4.0 2026-02-09T03:09:29Z 2026-02-09T03:09:29Z Bojan Novković bnovkov@FreeBSD.org 2026-02-02T10:13:12Z urn:sha1:5d7d22588dada885d7d8e2db306aa6e0ac030ef1 Approved by: re (cperciva) Reviewed by: mhorne Sponsored by: Klara, Inc. Obtained from: Intel perfmon (JSON event definitions) Differential Revision: https://reviews.freebsd.org/D55081 MFC after: 2 days (cherry picked from commit a3ff85e11925ba1e25465c8ba633356f405f9214) (cherry picked from commit 625ed651833e76a439a7010aa28c93bc83013168) 2025-12-11T20:24:29Z Anaëlle CAZUC Anaelle.CAZUC@stormshield.eu 2025-12-04T17:52:23Z urn:sha1:e56189d4436b91c2ccf915774cb2eef53c8eca0e This commit adds alderlaken CPU model to hwpmc/libpmc. JSON event definitions are imported from Intel perfmon version 1.16. Reviewed by: mhorne MFC after: 1 week Sponsored by: Stormshield Differential Revision: https://reviews.freebsd.org/D49229 (cherry picked from commit ca3e47b0ea68664c7e10e1c3e28c5ac7d9932c21) 2025-12-11T20:24:29Z Anaëlle CAZUC Anaelle.CAZUC@stormshield.eu 2025-12-04T17:36:32Z urn:sha1:f7129ef918b77596536107e5687a14907bda07c1 This commit adds emerald rapids CPU model to hwpmc/libpmc. JSON event definitions are imported from Intel perfmon version 1.06. Reviewed by: mhorne MFC after: 1 week Sponsored by: Stormshield Differential Revision: https://reviews.freebsd.org/D49228 (cherry picked from commit 51a01f3debff8abf63c7cc21db9523c8feb53823) 2024-05-02T20:10:13Z Jessica Clarke jrtc27@FreeBSD.org 2024-03-16T01:50:20Z urn:sha1:9019baf667c77a85ae3e23bac127a3e99411b401 macOS, like Linux, does not include an outer const qualifier for its fts_open callback arguments, so -Wincompatible-function-pointer-types also picks this up and breaks the build now Clang 16 makes it an error by default. Extend the existing Linux support to fix this. MFC after: 1 week (cherry picked from commit d8c84215d7675b7940412122b6d7026bd193c9b5) 2024-05-02T20:10:13Z Alex Richardson arichardson@FreeBSD.org 2023-12-12T05:10:14Z urn:sha1:8cb8aca83f6c3d5a28910c1dc66861232e6ccada The glibc fts_open() callback type does not have the second const qualifier and it appears that Clang 16 errors by default for mismatched function pointer types. Add an ifdef to handle this case. Reviewed By: imp, emaste Differential Revision: https://reviews.freebsd.org/D43000 (cherry picked from commit 60e845ceef25533bfb60450549bea56a17b1e467) 2024-04-27T03:02:10Z Alexander Motin mav@FreeBSD.org 2024-04-20T15:54:04Z urn:sha1:75f1323c15cb95e55c0d55dcd468967857762815 MFC after: 1 week (cherry picked from commit 278d6950943a9fec2bddb037b547c04a847c54ba) 2024-04-16T02:32:03Z Stephen J. Kiernan stevek@FreeBSD.org 2023-10-29T21:08:29Z urn:sha1:ba1b5e122a2f4813ef1022880ad27317e13ed1df Some leaf directories were missing Makefile.depend files or needed architecture-specific Makefile.depend.* files. (cherry picked from commit e5b786625f7f82a1fa91e41823332459ea5550f9) 2023-09-11T19:19:58Z Mitchell Horne mhorne@FreeBSD.org 2023-06-06T17:26:46Z urn:sha1:5adb91c72985b840b2c7fbf3c3308619acd2b61a Background: The pm_ev field of struct pmc_op_pmcallocate and struct pmc traditionally contains the index of the chosen event, corresponding to the __PMC_EVENTS array in pmc_events.h. This is a static list of events, maintained by FreeBSD. In the usual case, libpmc translates the user supplied event name (string) into the pm_ev index, which is passed as an argument to the allocation syscall. On the kernel side, the allocation method for the relevant hwpmc class translates the given index into the event code that will be written to an event selection register. In 2018, a new source of performance event definitions was introduced: the pmu-events json files, which are maintained by the Linux kernel. The result was better coverage for newer Intel processors with a reduced maintenance burden for libpmc/hwpmc. Intel and AMD CPUs were unconditionally switched to allocate events from pmu-events instead of the traditional scheme (959826ca1bb0a, 81eb4dcf9e0d). Under the pmu-events scheme, the pm_ev field contains an index corresponding to the selected event from the pmu-events table, something which the kernel has no knowledge of. The configuration for the performance counting registers is instead passed via class-dependent fields (struct pmc_md_op_pmcallocate). In 2021 I changed the allocation logic so that it would attempt to pull from the pmu-events table first, and fall-back to the traditional method (dfb4fb41166bc3). Later, pmu-events support for arm64 and power8 CPUs was added (28dd6730a5d6 and b48a2770d48b). The problem that remains is that the pm_ev field is overloaded, without a definitive way to determine whether the event allocation came from the pmu-events table or FreeBSD's statically-defined PMC events. This resulted in a recent fix, 21f7397a61f7. Change: To disambiguate these two supported but separate use-cases, add a new flag, PMC_F_EV_PMU, to be set as part of the allocation, indicating that the event index came from pmu-events. This is useful in two ways: 1. On the kernel side, we can validate the syscall arguments better. Some classes support only the traditional event scheme (e.g. hwpmc_armv7), while others support only the pmu-events method (e.g. hwpmc_core for Intel). We can now check for this. The hwpmc_arm64 class supports both methods, so the new flag supersedes the existing MD flag, PM_MD_EVENT_RAW. 2. The flag will be tracked in struct pmc for the duration of its lifetime, meaning it is communicated back to userspace. This allows libpmc to perform the reverse index-to-event-name translation without speculating about the meaning of the index value. Adding the flag is a backwards-incompatible ABI change. We recently bumped the major version of the hwpmc module, so this breakage is acceptable. Reviewed by: jkoshy MFC after: 3 days Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D40753 (cherry picked from commit c190fb35f35cc163b61e582a49115680b0d49dcc) 2023-09-11T19:19:58Z Mitchell Horne mhorne@FreeBSD.org 2023-06-19T22:32:22Z urn:sha1:196bb0e152cf2d3a0ba61bda8a2d09c8107a809a Have it call the platform-dependent version. For better layering, move the reset logic inside the new function. This is mainly to facilitate an upcoming change. Reviewed by: jkoshy MFC after: 3 days Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D40752 (cherry picked from commit 45dcc17e2fb8f0f9838ba167b311f271a08fcea9) 2023-08-16T17:55:10Z Warner Losh imp@FreeBSD.org 2023-08-16T17:55:10Z urn:sha1:fa9896e082a1046ff4fbc75fcba4d18d1f2efc19 Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/