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Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
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| Original file line number | Diff line number | Diff line change |
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@@ -49,6 +49,7 @@ changes-v1.13 | |
| changes-v1.16 | ||
| changes-v1.17 | ||
| changes-v1.18 | ||
| changes-v1.19 | ||
| COPYING | ||
| NEWS | ||
| README | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| v1.19: | ||
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| - Support split BTF, where a main BTF file, vmlinux, can be used to find types | ||
| and then a kernel module, for instance, can have just what is unique to it. | ||
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| For instance, looking for a type in the main vmlinux BTF info: | ||
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| $ pahole wmi_notify_handler | ||
| pahole: type 'wmi_notify_handler' not found | ||
| $ | ||
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| If we look at the 'wmi' module BTF info that is in: | ||
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| $ ls -la /sys/kernel/btf/wmi | ||
| -r--r--r--. 1 root root 2866 Nov 18 13:35 /sys/kernel/btf/wmi | ||
| $ | ||
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| $ pahole /sys/kernel/btf/wmi -C wmi_notify_handler | ||
| typedef void (*wmi_notify_handler)(u32, void *); | ||
| $ | ||
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| '--btf_base=/sys/kernel/btf/vmlinux' was automatically added in this last | ||
| example, an option that was also introduced in this version where types used in | ||
| the wmi.ko module but present in vmlinux can be found so that there is no | ||
| duplicity of types. | ||
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| - Update libbpf to get the split BTF support and use some of its functions to | ||
| load BTF and speed up DWARF loading and BTF encoding. | ||
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| - Support cross-compiled ELF binaries with different endianness | ||
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| - Support showing typedefs for anonymous types, like structs, unions and enums, | ||
| see the "Align enumerators" entry below for an example, another: | ||
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| $ pahole rwlock_t | ||
| typedef struct { | ||
| arch_rwlock_t raw_lock; /* 0 8 */ | ||
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| /* size: 8, cachelines: 1, members: 1 */ | ||
| /* last cacheline: 8 bytes */ | ||
| } rwlock_t; | ||
| $ | ||
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| - Align enumerators: | ||
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| $ pahole ZSTD_strategy | ||
| typedef enum { | ||
| ZSTD_fast = 0, | ||
| ZSTD_dfast = 1, | ||
| ZSTD_greedy = 2, | ||
| ZSTD_lazy = 3, | ||
| ZSTD_lazy2 = 4, | ||
| ZSTD_btlazy2 = 5, | ||
| ZSTD_btopt = 6, | ||
| ZSTD_btopt2 = 7, | ||
| } ZSTD_strategy; | ||
| $ | ||
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| - Workaround bugs in the generation of DWARF records for functions in some gcc | ||
| versions that were causing breakage in the encoding of BTF: | ||
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| https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97060 "Missing DW_AT_declaration=1 in dwarf data" | ||
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| - Ignore zero-sized ELF symbols instead of erroring out. | ||
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| - Handle union forward declaration properly in the BTF loader. | ||
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| - Introduce --numeric_version for use in scripts and Makefiles: | ||
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| $ pahole --version | ||
| v1.19 | ||
| $ pahole --numeric_version | ||
| 119 | ||
| $ | ||
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| To avoid things like this in the kernel's scripts/link-vmlinux.sh: | ||
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| pahole_ver=$(${PAHOLE} --version | sed -E 's/v([0-9]+)\.([0-9]+)/\1\2/') | ||
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| - Try sole pfunct argument as a function name, just like pahole with type names: | ||
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| $ pfunct tcp_v4_rcv | ||
| int tcp_v4_rcv(struct sk_buff * skb); | ||
| $ | ||
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| - Speed up pfunct using some of the load techniques used in pahole. | ||
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| - Discard CUs after BTF encoding as they're not used anymore, greatly reducing | ||
| memory usage and speeding up vmlinux BTF encoding. | ||
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| - Revamp how per-CPU variables are encoded in BTF. | ||
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| - Include BTF info for static functions. | ||
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| - Use BTF's string APIs for strings management, greatly improving performance | ||
| over the tsearch(). | ||
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| - Increase size of DWARF lookup hash table, shaving off about 1 second out of | ||
| about 20 seconds total for Linux BTF dedup. | ||
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| - Stop BTF encoding when errors are found in some DWARF CU. | ||
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| - Implement --packed, to show just packed structures, for instance, here are | ||
| the top 5 packed data structures in the Linux kernel: | ||
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| $ pahole --sizes --packed | sort -k2 -nr | head -5 | ||
| e820_table 64004 0 | ||
| boot_params 4096 0 | ||
| efi_variable 2084 0 | ||
| snd_soc_tplg_pcm 912 0 | ||
| ntb_info_regs 800 0 | ||
| $ | ||
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| And here is one of them: | ||
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| $ pahole efi_variable | ||
| struct efi_variable { | ||
| efi_char16_t VariableName[512]; /* 0 1024 */ | ||
| /* --- cacheline 16 boundary (1024 bytes) --- */ | ||
| efi_guid_t VendorGuid; /* 1024 16 */ | ||
| long unsigned int DataSize; /* 1040 8 */ | ||
| __u8 Data[1024]; /* 1048 1024 */ | ||
| /* --- cacheline 32 boundary (2048 bytes) was 24 bytes ago --- */ | ||
| efi_status_t Status; /* 2072 8 */ | ||
| __u32 Attributes; /* 2080 4 */ | ||
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| /* size: 2084, cachelines: 33, members: 6 */ | ||
| /* last cacheline: 36 bytes */ | ||
| } __attribute__((__packed__)); | ||
| $ | ||
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| - Fix bug in distros such as OpenSUSE:15.2 where DW_AT_alignment isn't defined. | ||
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| Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> |
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| Original file line number | Diff line number | Diff line change |
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@@ -2,7 +2,7 @@ | |
| %define libver 1 | ||
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| Name: dwarves | ||
| Version: 1.18 | ||
| Version: 1.19 | ||
| Release: 1%{?dist} | ||
| License: GPLv2 | ||
| Summary: Debugging Information Manipulation Tools (pahole & friends) | ||
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@@ -39,7 +39,7 @@ One example of pfunct usage is in the fullcircle tool, a shell that drivers | |
| pfunct to generate compileable code out of a .o file and then build it using | ||
| gcc, with the same compiler flags, and then use codiff to make sure the | ||
| original .o file and the new one generated from debug info produces the same | ||
| debug info.pick | ||
| debug info. | ||
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| Pahole also can be used to use all this type information to pretty print raw data | ||
| according to command line directions. | ||
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@@ -79,7 +79,7 @@ rm -Rf %{buildroot} | |
| %files | ||
| %doc README.ctracer | ||
| %doc README.btf | ||
| %doc changes-v1.18 | ||
| %doc changes-v1.19 | ||
| %doc NEWS | ||
| %{_bindir}/btfdiff | ||
| %{_bindir}/codiff | ||
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@@ -128,19 +128,39 @@ rm -Rf %{buildroot} | |
| %{_includedir}/dwarves/libctf.h | ||
| %{_includedir}/dwarves/list.h | ||
| %{_includedir}/dwarves/rbtree.h | ||
| %{_includedir}/dwarves/strings.h | ||
| %{_includedir}/dwarves/pahole_strings.h | ||
| %{_libdir}/%{libname}.so | ||
| %{_libdir}/%{libname}_emit.so | ||
| %{_libdir}/%{libname}_reorganize.so | ||
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| %changelog | ||
| * Fri Nov 20 2020 Arnaldo Carvalho de Melo <[email protected]> - 1.19-1 | ||
| - New release: 1.19 | ||
| - Split BTF | ||
| - DWARF workarounds for DW_AT_declaration | ||
| - Support cross-compiled ELF binaries with different endianness | ||
| - Support showing typedefs for anonymous types | ||
| - Speedups using libbpf algorithms | ||
| - See changes-v1.19 for a complete and more detailed list of changes | ||
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| * Fri Oct 02 2020 Arnaldo Carvalho de Melo <[email protected]> - 1.18-1 | ||
| - New release: 1.18 | ||
| - Use debugging info to pretty print raw data | ||
| - Store percpu variables in vmlinux BTF. | ||
| - Fixes to address segfaults on the gdb testsuite binaries | ||
| - Bail out on partial units for now, avoiding segfaults and providing warning to user. | ||
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| * Mon Aug 31 2020 - Zamir SUN <[email protected]> - 1.17-4 | ||
| - Fix FTBFS | ||
| - Resolves: bug 1863459 | ||
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| * Sat Aug 01 2020 Fedora Release Engineering <[email protected]> - 1.17-3 | ||
| - Second attempt - Rebuilt for | ||
| https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild | ||
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| * Mon Jul 27 2020 Fedora Release Engineering <[email protected]> - 1.17-2 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild | ||
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| * Fri Mar 13 2020 Arnaldo Carvalho de Melo <[email protected]> - 1.17-1 | ||
| - New release: 1.17 | ||
| - Support raw BTF as available in /sys/kernel/btf/vmlinux. | ||
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@@ -155,7 +175,7 @@ rm -Rf %{buildroot} | |
| - Introduce --unions to consider just unions: | ||
| - Fix -m/--nr_methods - Number of functions operating on a type pointer | ||
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| * Mon Dec 16 2019 Arnaldo Carvalho de Melo <[email protected]> - 1.16-1 | ||
| * Wed Feb 12 2020 Arnaldo Carvalho de Melo <[email protected]> - 1.16-1 | ||
| - New release: 1.16 | ||
| - BTF encoder: Preserve and encode exported functions as BTF_KIND_FUNC. | ||
| - BTF loader: Add support for BTF_KIND_FUNC | ||
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@@ -169,10 +189,16 @@ rm -Rf %{buildroot} | |
| - pglobal: Allow passing the format path specifier, to use with BTF | ||
| - Tree wide: Fixup issues pointed out by various coverity reports. | ||
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| * Tue Nov 05 2019 Jiri Olsa <[email protected]> - 1.15-2 | ||
| - Add libdwarves version dependency to dwarves package | ||
| * Tue Jan 28 2020 Fedora Release Engineering <[email protected]> - 1.15-4 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild | ||
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| * Wed Jul 24 2019 Fedora Release Engineering <[email protected]> - 1.15-3 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild | ||
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| * Mon Jul 1 2019 Arnaldo Carvalho de Melo <[email protected]> - 1.15-2 | ||
| - Fix bug when processing classes without members | ||
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| * Fri May 27 2019 Arnaldo Carvalho de Melo <[email protected]> - 1.15-1 | ||
| * Thu Jun 27 2019 Arnaldo Carvalho de Melo <[email protected]> - 1.15-1 | ||
| - New release: 1.15 | ||
| - Fix --expand_types/-E segfault | ||
| - Fixup endless printing named structs inside structs in --expand_types | ||
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@@ -188,22 +214,70 @@ rm -Rf %{buildroot} | |
| - Support unions as arguments to -C/--class | ||
| - New 'pfunct --compile' generates compilable output with type definitions | ||
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| * Thu Aug 16 2018 Arnaldo Carvalho de Melo <[email protected]> - 1.12-1 | ||
| - New release: | ||
| * Thu Jan 31 2019 Fedora Release Engineering <[email protected]> - 1.12-2 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild | ||
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| * Fri Aug 31 2018 Arnaldo Carvalho de Melo <[email protected]> - 1.12-1 | ||
| - New release: 1.12 | ||
| - union member cacheline boundaries for all inner structs | ||
| - print union member offsets | ||
| - Document 'pahole --hex' | ||
| - Encode BTF type format for use with eBPF | ||
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| * Wed Jun 28 2017 Arnaldo Carvalho de Melo <[email protected]> - 1.11-1 | ||
| - New release | ||
| * Thu Jul 12 2018 Fedora Release Engineering <[email protected]> - 1.10-15 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_29_Mass_Rebuild | ||
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| * Wed Feb 07 2018 Fedora Release Engineering <[email protected]> - 1.10-14 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild | ||
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| * Wed Aug 02 2017 Fedora Release Engineering <[email protected]> - 1.10-13 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Binutils_Mass_Rebuild | ||
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| * Wed Jul 26 2017 Fedora Release Engineering <[email protected]> - 1.10-12 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild | ||
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| * Fri Feb 10 2017 Fedora Release Engineering <[email protected]> - 1.10-11 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild | ||
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| * Wed Aug 03 2016 Cole Robinson <[email protected]> - 1.10-9%{?dist} | ||
| - pdwtags: don't fail on unhandled tags (bz 1348200) | ||
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| * Wed Feb 03 2016 Fedora Release Engineering <[email protected]> - 1.10-9 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild | ||
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| * Wed Jun 17 2015 Fedora Release Engineering <[email protected]> - 1.10-8 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild | ||
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| * Fri Sep 05 2014 Marcin Juszkiewicz <[email protected]> - 1.10-7 | ||
| - backport removal of DW_TAG_mutable_type | ||
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| * Sat Aug 16 2014 Fedora Release Engineering <[email protected]> - 1.10-6 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_21_22_Mass_Rebuild | ||
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| * Sat Jun 07 2014 Fedora Release Engineering <[email protected]> - 1.10-5 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild | ||
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| * Sat Aug 03 2013 Fedora Release Engineering <[email protected]> - 1.10-4 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_20_Mass_Rebuild | ||
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| * Wed Feb 13 2013 Fedora Release Engineering <[email protected]> - 1.10-3 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_19_Mass_Rebuild | ||
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| * Wed Jul 18 2012 Fedora Release Engineering <[email protected]> - 1.10-2 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_18_Mass_Rebuild | ||
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| * Wed May 30 2012 Arnaldo Carvalho de Melo <[email protected]> - 1.10-1 | ||
| - New release | ||
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| * Fri Jan 13 2012 Fedora Release Engineering <[email protected]> - 1.9-2 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_17_Mass_Rebuild | ||
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| * Sat Nov 20 2010 Arnaldo Carvalho de Melo <[email protected]> - 1.9-1 | ||
| - New release | ||
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| * Tue Feb 08 2011 Fedora Release Engineering <[email protected]> - 1.8-2 | ||
| - Rebuilt for https://fedoraproject.org/wiki/Fedora_15_Mass_Rebuild | ||
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| * Fri Dec 4 2009 Arnaldo Carvalho de Melo <[email protected]> - 1.8-1 | ||
| - New release | ||
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