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Fri Jun 20 2025 Gregory Bell <grbell@redhat.com> - 1.30-1
- New release: 1.30
- Better detection of abort during DWARF loader thread processing
- pahole now detects presence of libbpf APIs and BTF features using weak function
declarations when built using a shared library libbpf
- Type tags are emitted for BPF arena pointers with new BTF "attributes" feature
- New release: 1.29
- Multithreading is now in the DWARF loader using a jobs queue and a pool of worker threads.
- The BTF encoding now is always reproducible, and as fast/faster than before.
- The memory consumption is reduced.
- Support for multiple BTF_DECL_TAGs pointing to same tag.
- Verify that pfunct prints btf_decl_tags read from BTF.
- Don't print functions twice when using 'pfunct -f function_name'.
- New release: 1.28
- Various improvements to reduce the memory footprint of pahole, notably when doing BTF encoding.
- Show flexible arrays statistics
- Add '--padding N' and '--padding_ge N' to show structs with paddings
- Introduce --running_kernel_vmlinux to find a vmlinux that matches the build-id of the running kernel.
- Don't stop pfunct output at the first function that matches a filter, show all of them
- Allow encoding data about all global variables, not just per CPU ones
- Handle .BTF_ids section endianness, fully supporting cross builds
- Generate decl tags for bpf_fastcall for eligible kfuncs
- Add "distilled_base" BTF feature to split BTF generation.
- Use the ELF_C_READ_MMAP mode with libelf, reducing peak memory utilization
- Allow overriding /sys/kernel/btf/vmlinux via the PAHOLE_VMLINUX_BTF_FILENAME env var
- Allow setting the list of compile units via PAHOLE_LANG_EXCLUDE env var
- Serialize access to elfutils dwarf_getlocation().
- Honour --lang_exclude when merging LTO built CUs.
- Add the debuginfod client cache directory to the vmlinux search path.
- Print the CU's language when a tag isn't supported.
- Initial support for GNU_formal_parameter_pack, GNU_template_parameter_pack, template_value_param and template_type_param DWARF tags.
- Improve the parameter parsing by checking DW_OP_[GNU_]entry_value
- Introduce a tests/ directory with regression tests
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Tue Oct 29 2024 Troy Dawson <tdawson@redhat.com> - 1.27-3
- Bump release for October 2024 mass rebuild:
Resolves: RHEL-64018
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Mon Aug 12 2024 Davide Cavalca <dcavalca@centosproject.org> - 1.27-2
- Backport upstream bugfixes for clang builds
Resolves: RHEL-54228
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Wed Jun 26 2024 Viktor Malik <vmalik@redhat.com> - 1.27-1
- Resolves: RHEL-45148
- Add gating.yaml
- Add "Provides: pahole"
- New release: v1.26
- When expanding types using 'pahole -E' do it for union and struct typedefs and for enums too.
- Print number of holes, bit holes and bit paddings in class member types.
- Introduce --contains_enumerator=ENUMERATOR_NAME:
- Fix pretty printing using DWARF, waiting for a CU with both class (-C) and a specified "type_enum".
- Add support for DW_TAG_constant in the DWARF loader, first seen in Go DWARF.
- Fix loading DW_TAG_subroutine_type generated by the Go compiler.
- Fix loading of 32-bit signed enums from BTF.
- Add 'pahole --btf_features' to allow consumers to specify an opt-in set of features they want to use in BTF encoding.
- Parallelize loading BTF and DWARF, speeding up a bit btfdiff.
- Do type expansion to cover "private" types and enumerations in btfdiff.
- New release: v1.27
- Reproducible parallel builds: multiple runs with different number of loading/encoding threads produce the same result.
- Inject kfunc decl tags into BTF from the BTF IDs ELF section in the Linux kernel vmlinux file.
- Sanitize unsupported DWARF int type with greater-than-16 byte, as BTF doesn't support it.
- Initial support for BTF_KIND_DECL_TAG in the BTF loader, adding support in pfunct output.
- Fix hole discovery with inheritance in C++.
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Mon Jun 24 2024 Troy Dawson <tdawson@redhat.com> - 1.25-6
- Bump release for June 2024 mass rebuild
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Wed Jan 24 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.25-5
- Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
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Fri Jan 19 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.25-4
- Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
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Wed Oct 11 2023 Viktor Malik <vmalik@redhat.com> - 1.25-3
- Migrate license to SPDX
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Wed Jul 19 2023 Fedora Release Engineering <releng@fedoraproject.org> - 1.25-2
- Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild
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Sat Apr 08 2023 Arnaldo Carvalho de Melo <acme@redhat.com> - 1.25-1
- New release: v1.25
- Support for DW_TAG_unspecified_type more generally.
- Make sure struct member offsets are in ascending order. Rust BTF needs this.
- Support C atomic types (DW_TAG_atomic_type).
- Initial support for DW_TAG_LLVM_annotation, used for BTF type tags, for __rcu, __user, etc
- Exclude functions with the same name (static functions in different CUs), inconsistent prototypes or not following calling convention.
- Allow generation of BTF for optimized functions, those that end with a .isra*, .constprop*.
- Support 'pahole --lang=/--lang_exclude=asm'
- Support --compile from DWARF in addition to from BTF.
- Exclude RUST CUs in 'btfdiff', as those are not yet being BTF encoded.