btf: bpf_core_type_matches is now supported
Programs can now use bpf_core_type_matches() for a stricter compatibility check. See #1366.
program, btf: improve debuggability when CO-RE or kfunc fixup fails
The library now tries to return a more informative error when loading a program fails due to a failed CO-RE relocation or a missing kfunc. See #1402.
btf: synthesise instruction comments into line info
asm.Comment in an instruction's Source() are now passed to the kernel in the form of BTF line info. See #1417.
perf: add WakeupEvents support to Reader
A perf Reader can now be configured to be woken up after a specific number of events / samples have been submitted. See #1404.
Bugfixes
program: fix loading a program which targets a function in a kernel module whenCONFIG_DEBUG_INFO_BTF_MODULESis disabled, see #1440.
Breaking changes
github.com/cilium/ebpf/btf
Copy: thetransformargument was removed. Use the newbtf.Asfunction instead.Transformer: removed. See above.
What's Changed
- btf: use recursion by @lmb in #1397
- gh: hopefully fix apidiff workflow by @lmb in #1401
- gh: only cancel pull_request runs by @lmb in #1403
- build(deps): bump pymdown-extensions from 10.7 to 10.7.1 in /docs by @dependabot in #1410
- build(deps): bump mkdocs-git-authors-plugin from 0.7.2 to 0.8.0 in /docs by @dependabot in #1411
- build(deps): bump mkdocs-material from 9.5.12 to 9.5.16 in /docs by @dependabot in #1409
- program, btf: improve debuggability when CO-RE or kfunc fixup fails by @lmb in #1402
- add WakeupEvents support to perf Reader by @brycekahle in #1404
- Extend go test CI from 10 to 15 miniutes by @dylandreimerink in #1418
- btf: synthesise instruction comments into line info by @MarcusWichelmann in #1417
- Add support to retrieve missed counts from probes by @olsajiri in #1295
- perf: fix TestPerfReaderWakeupEvents by @lmb in #1423
- Don't mention inexistent outLen parameter in (*Program).Test godoc by @tklauser in #1426
- btf: refuse reloTypeIDTarget for kmod types by @lmb in #1422
- when ringbuffer map size is not a power-of-2 multiple of page size, prompt users in a user-friendly way by @hengyoush in #1420
- btf: Add support for
bpf_core_type_matches()by @dylandreimerink in #1366 - Define LookupLock by means of BPF_F_LOCK by @tklauser in #1428
- build(deps): bump idna from 3.6 to 3.7 in /docs by @dependabot in #1431
- fix function name by @looklose in #1427
- doc: rephrase supported kernel versions by @lmb in #1439
- Use latest Go version for ARM64 and VM tests in CI by @tklauser in #1430
- program: don't return error when kmod BTF is disabled by @orishuss in #1440
New Contributors
- @hengyoush made their first contribution in #1420
- @looklose made their first contribution in #1427
- @orishuss made their first contribution in #1440
Full Changelog: v0.14.0...v0.15.0