There patches are on top of: https://lore.kernel.org/lkml/20240924003720.617258-1-irogers@xxxxxxxxxx/ where it was pointed out that a lot of the libdw conditional compilation was due to features that have now been standard for 10 or 15 years. The patches remove the conditional compilation assuming the features are in libdw where the feature test is expanded to check there pressence. In the Makefile code, and for `perf record --call-graph`, dwarf tends to mean unwind or libdw support for dwarf things. To make it clearer when dwarf really just means libdw numerous build variables and defines are renamed. PERF_HAVE_DWARF_REGS was particularly tricky and has been removed as it isn't necessary as was somewhat inversely guarding libdw support. The Makefile variable indicated an architecture having a dwarf-regs.c file. This file contained code for BPF prologues, which were removed with BPF event support. The files also often just contained a redundant get_arch_regstr function. The function was redundant as get_dwarf_regstr would do the appropriate thing if the ELF machine were given. To remove get_arch_regstr the ELF machine is computed for the host machine. This now makes the logic work across platforms, but the testing I was able to do across platforms was minimal. There is some tech debt in the changes as perf check still reports the values using the old name and for features that are no longer tested. This can be cleanup for another day. v2: Instead of renaming PERF_HAVE_DWARF_REGS to PERF_HAVE_LIBDW_REGS, remove it. Ian Rogers (31): perf build: Fix !HAVE_DWARF_GETLOCATIONS_SUPPORT perf build: Rename NO_DWARF to NO_LIBDW perf build: Remove defined but never used variable perf build: Rename test-dwarf to test-libdw perf build: Combine libdw-dwarf-unwind into libdw feature tests perf build: Combine test-dwarf-getlocations into test-libdw perf build: Combine test-dwarf-getcfi into test-libdw perf probe: Move elfutils support check to libdw check perf libdw: Remove unnecessary defines perf build: Rename HAVE_DWARF_SUPPORT to HAVE_LIBDW_SUPPORT perf build: Rename CONFIG_DWARF to CONFIG_LIBDW perf bpf-prologue: Remove unused file perf dwarf-regs: Remove PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET perf dwarf-regs: Add EM_HOST and EF_HOST defines perf disasm: Add e_machine/e_flags to struct arch perf dwarf-regs: Pass accurate disassembly machine to get_dwarf_regnum perf dwarf-regs: Pass ELF flags to get_dwarf_regstr perf dwarf-regs: Move x86 dwarf-regs out of arch perf arm64: Remove dwarf-regs.c perf arm: Remove dwarf-regs.c perf dwarf-regs: Move csky dwarf-regs out of arch perf loongarch: Remove dwarf-regs.c perf mips: Remove dwarf-regs.c perf dwarf-regs: Move powerpc dwarf-regs out of arch perf riscv: Remove dwarf-regs.c and add dwarf-regs-table.h perf s390: Remove dwarf-regs.c perf sh: Remove dwarf-regs.c perf sparc: Remove dwarf-regs.c perf xtensa: Remove dwarf-regs.c perf dwarf-regs: Remove get_arch_regstr code perf build: Remove PERF_HAVE_DWARF_REGS tools/build/Makefile.feature | 11 +- tools/build/feature/Makefile | 24 +-- tools/build/feature/test-all.c | 16 +- tools/build/feature/test-dwarf.c | 11 -- tools/build/feature/test-dwarf_getcfi.c | 9 -- tools/build/feature/test-dwarf_getlocations.c | 13 -- tools/build/feature/test-libdw-dwarf-unwind.c | 14 -- tools/build/feature/test-libdw.c | 56 +++++++ tools/perf/Documentation/perf-check.txt | 6 +- tools/perf/Makefile.config | 58 ++----- tools/perf/Makefile.perf | 2 +- tools/perf/arch/arc/annotate/instructions.c | 2 + tools/perf/arch/arm/Makefile | 3 - tools/perf/arch/arm/annotate/instructions.c | 2 + tools/perf/arch/arm/util/Build | 2 - tools/perf/arch/arm/util/dwarf-regs.c | 61 ------- tools/perf/arch/arm64/Makefile | 4 - tools/perf/arch/arm64/annotate/instructions.c | 2 + tools/perf/arch/arm64/util/Build | 1 - tools/perf/arch/arm64/util/dwarf-regs.c | 92 ----------- tools/perf/arch/csky/Makefile | 4 - tools/perf/arch/csky/annotate/instructions.c | 7 +- tools/perf/arch/csky/util/Build | 1 - tools/perf/arch/loongarch/Makefile | 4 - .../arch/loongarch/annotate/instructions.c | 2 + tools/perf/arch/loongarch/util/Build | 1 - tools/perf/arch/loongarch/util/dwarf-regs.c | 44 ----- tools/perf/arch/mips/Makefile | 4 - tools/perf/arch/mips/annotate/instructions.c | 2 + tools/perf/arch/mips/util/Build | 1 - tools/perf/arch/mips/util/dwarf-regs.c | 38 ----- tools/perf/arch/powerpc/Makefile | 5 - .../perf/arch/powerpc/annotate/instructions.c | 6 +- tools/perf/arch/powerpc/util/Build | 3 +- tools/perf/arch/powerpc/util/dwarf-regs.c | 153 ------------------ tools/perf/arch/riscv/Makefile | 5 +- .../arch/riscv/include/dwarf-regs-table.h | 42 +++++ tools/perf/arch/riscv/util/Build | 1 - tools/perf/arch/riscv/util/dwarf-regs.c | 72 --------- .../perf/arch/riscv64/annotate/instructions.c | 2 + tools/perf/arch/s390/Makefile | 4 - tools/perf/arch/s390/annotate/instructions.c | 2 + tools/perf/arch/s390/util/Build | 1 - tools/perf/arch/s390/util/dwarf-regs.c | 43 ----- tools/perf/arch/sh/Build | 1 - tools/perf/arch/sh/Makefile | 4 - tools/perf/arch/sh/util/Build | 1 - tools/perf/arch/sh/util/dwarf-regs.c | 41 ----- tools/perf/arch/sparc/Build | 1 - tools/perf/arch/sparc/Makefile | 4 - tools/perf/arch/sparc/annotate/instructions.c | 2 + tools/perf/arch/sparc/util/Build | 1 - tools/perf/arch/sparc/util/dwarf-regs.c | 39 ----- tools/perf/arch/x86/Makefile | 4 - tools/perf/arch/x86/annotate/instructions.c | 5 +- tools/perf/arch/x86/util/Build | 3 - tools/perf/arch/x86/util/dwarf-regs.c | 153 ------------------ tools/perf/arch/xtensa/Build | 1 - tools/perf/arch/xtensa/Makefile | 4 - tools/perf/arch/xtensa/util/Build | 1 - tools/perf/arch/xtensa/util/dwarf-regs.c | 21 --- tools/perf/builtin-annotate.c | 2 +- tools/perf/builtin-check.c | 6 +- tools/perf/builtin-probe.c | 14 +- tools/perf/builtin-report.c | 4 +- tools/perf/util/Build | 15 +- tools/perf/util/annotate-data.h | 8 +- tools/perf/util/annotate.c | 6 +- tools/perf/util/bpf-prologue.h | 37 ----- tools/perf/util/debuginfo.h | 6 +- tools/perf/util/disasm.c | 4 +- tools/perf/util/disasm.h | 8 +- tools/perf/util/dwarf-aux.c | 6 - tools/perf/util/dwarf-aux.h | 53 ------ .../dwarf-regs.c => util/dwarf-regs-csky.c} | 19 +-- tools/perf/util/dwarf-regs-powerpc.c | 61 +++++++ tools/perf/util/dwarf-regs-x86.c | 50 ++++++ tools/perf/util/dwarf-regs.c | 38 +++-- tools/perf/util/genelf.c | 4 +- tools/perf/util/genelf.h | 2 +- tools/perf/util/include/dwarf-regs.h | 114 ++++++++++--- tools/perf/util/probe-event.c | 4 +- tools/perf/util/probe-finder.c | 19 +-- tools/perf/util/probe-finder.h | 9 +- 84 files changed, 454 insertions(+), 1157 deletions(-) delete mode 100644 tools/build/feature/test-dwarf.c delete mode 100644 tools/build/feature/test-dwarf_getcfi.c delete mode 100644 tools/build/feature/test-dwarf_getlocations.c delete mode 100644 tools/build/feature/test-libdw-dwarf-unwind.c create mode 100644 tools/build/feature/test-libdw.c delete mode 100644 tools/perf/arch/arm/util/dwarf-regs.c delete mode 100644 tools/perf/arch/arm64/util/dwarf-regs.c delete mode 100644 tools/perf/arch/csky/Makefile delete mode 100644 tools/perf/arch/loongarch/util/dwarf-regs.c delete mode 100644 tools/perf/arch/mips/util/dwarf-regs.c delete mode 100644 tools/perf/arch/powerpc/util/dwarf-regs.c create mode 100644 tools/perf/arch/riscv/include/dwarf-regs-table.h delete mode 100644 tools/perf/arch/riscv/util/dwarf-regs.c delete mode 100644 tools/perf/arch/s390/util/dwarf-regs.c delete mode 100644 tools/perf/arch/sh/Build delete mode 100644 tools/perf/arch/sh/Makefile delete mode 100644 tools/perf/arch/sh/util/Build delete mode 100644 tools/perf/arch/sh/util/dwarf-regs.c delete mode 100644 tools/perf/arch/sparc/Build delete mode 100644 tools/perf/arch/sparc/util/Build delete mode 100644 tools/perf/arch/sparc/util/dwarf-regs.c delete mode 100644 tools/perf/arch/x86/util/dwarf-regs.c delete mode 100644 tools/perf/arch/xtensa/Build delete mode 100644 tools/perf/arch/xtensa/Makefile delete mode 100644 tools/perf/arch/xtensa/util/Build delete mode 100644 tools/perf/arch/xtensa/util/dwarf-regs.c delete mode 100644 tools/perf/util/bpf-prologue.h rename tools/perf/{arch/csky/util/dwarf-regs.c => util/dwarf-regs-csky.c} (74%) create mode 100644 tools/perf/util/dwarf-regs-powerpc.c create mode 100644 tools/perf/util/dwarf-regs-x86.c -- 2.47.0.rc0.187.ge670bccf7e-goog
