This patch series is to refactor arch related functions for register parsing, which follows up the discussion for v1: https://lore.kernel.org/lkml/20230520025537.1811986-1-leo.yan@xxxxxxxxxx/ Compared to patch series v1, this patch series introduces new functions perf_arch_reg_{ip|sp}(), so this can allow the tool to support cross analysis. To verify the cross analysis, I used below steps: - Firstly, I captured perf data on Arm64 machine: $ perf record --call-graph fp -- ./test_program Or ... $ perf record --call-graph dwarf -- ./test_program Then, I also archived associated debug data: $ perf archive - Secondly, I copied the perf data file and debug tar file on my x86 machine: $ scp perf.data perf.data.tar.bz2 leoy@IP_ADDRESS:/target/path/ - On x86 machine, I need to build perf for support multi-arch unwinding: $ git clone http://git.savannah.gnu.org/r/libunwind.git $ cd libunwind $ autoreconf -i # Build and install libunwind aarch64: $ ./configure prefix=/home/leoy/Work/tools/libunwind/install/ \ --target=aarch64-linux-gnu CC=x86_64-linux-gnu-gcc $ make && make install # Build and install libunwind x86: $ ./configure prefix=/home/leoy/Work/tools/libunwind/install/ \ --target=x86_64-linux-gnu CC=x86_64-linux-gnu-gcc $ make && make install - Build perf tool for support multi-archs: $ cd $LINUX/tools/perf $ make VF=1 DEBUG=1 LIBUNWIND_DIR=/home/leoy/Work/tools/libunwind/install At the end, I verified the x86 perf tool can do cross analysis for aarch64's perf data file. Note, I still see x86 perf tool cannot display the complete callgraph for aarch64, but it should not the issue caused by this series, which will be addressed by separate patches. I also built this patch series on my Arm64 and x86 machines, both can compile perf tool successfully; but I have no chance to build other archs natively. Changes from v1: - For support cross analysis for IP/SP registers, introduced patch 0002 (James Clark, Ian Rogers). Leo Yan (6): perf parse-regs: Refactor arch register parsing functions perf parse-regs: Introduce functions perf_arch_reg_{ip|sp}() perf unwind: Use perf_arch_reg_{ip|sp}() to substitute macros perf parse-regs: Remove unused macros PERF_REG_{IP|SP} perf parse-regs: Remove PERF_REGS_{MAX|MASK} from common code perf parse-regs: Move out arch specific header from util/perf_regs.h tools/perf/arch/arm/include/perf_regs.h | 3 - tools/perf/arch/arm/util/perf_regs.c | 11 + tools/perf/arch/arm/util/unwind-libdw.c | 1 + tools/perf/arch/arm64/include/perf_regs.h | 3 - tools/perf/arch/arm64/util/machine.c | 1 + tools/perf/arch/arm64/util/perf_regs.c | 6 + tools/perf/arch/arm64/util/unwind-libdw.c | 1 + tools/perf/arch/csky/include/perf_regs.h | 3 - tools/perf/arch/csky/util/perf_regs.c | 11 + tools/perf/arch/csky/util/unwind-libdw.c | 1 + tools/perf/arch/loongarch/include/perf_regs.h | 2 - tools/perf/arch/loongarch/util/perf_regs.c | 11 + tools/perf/arch/loongarch/util/unwind-libdw.c | 1 + tools/perf/arch/mips/include/perf_regs.h | 2 - tools/perf/arch/mips/util/perf_regs.c | 11 + tools/perf/arch/powerpc/include/perf_regs.h | 3 - tools/perf/arch/powerpc/util/perf_regs.c | 6 + tools/perf/arch/powerpc/util/unwind-libdw.c | 1 + tools/perf/arch/riscv/include/perf_regs.h | 3 - tools/perf/arch/riscv/util/perf_regs.c | 11 + tools/perf/arch/riscv/util/unwind-libdw.c | 1 + tools/perf/arch/s390/include/perf_regs.h | 3 - tools/perf/arch/s390/util/perf_regs.c | 11 + tools/perf/arch/s390/util/unwind-libdw.c | 1 + tools/perf/arch/x86/include/perf_regs.h | 2 - tools/perf/arch/x86/util/perf_regs.c | 6 + tools/perf/arch/x86/util/unwind-libdw.c | 1 + tools/perf/util/Build | 1 + tools/perf/util/evsel.c | 6 +- tools/perf/util/libunwind/arm64.c | 2 - tools/perf/util/libunwind/x86_32.c | 2 - tools/perf/util/perf-regs-arch/Build | 9 + .../util/perf-regs-arch/perf_regs_aarch64.c | 96 +++ .../perf/util/perf-regs-arch/perf_regs_arm.c | 60 ++ .../perf/util/perf-regs-arch/perf_regs_csky.c | 100 +++ .../util/perf-regs-arch/perf_regs_loongarch.c | 91 +++ .../perf/util/perf-regs-arch/perf_regs_mips.c | 87 ++ .../util/perf-regs-arch/perf_regs_powerpc.c | 145 ++++ .../util/perf-regs-arch/perf_regs_riscv.c | 92 +++ .../perf/util/perf-regs-arch/perf_regs_s390.c | 96 +++ .../perf/util/perf-regs-arch/perf_regs_x86.c | 98 +++ tools/perf/util/perf_regs.c | 772 ++---------------- tools/perf/util/perf_regs.h | 49 +- tools/perf/util/unwind-libdw.c | 7 +- tools/perf/util/unwind-libunwind-local.c | 6 +- tools/perf/util/unwind.h | 8 - 46 files changed, 1078 insertions(+), 766 deletions(-) create mode 100644 tools/perf/util/perf-regs-arch/Build create mode 100644 tools/perf/util/perf-regs-arch/perf_regs_aarch64.c create mode 100644 tools/perf/util/perf-regs-arch/perf_regs_arm.c create mode 100644 tools/perf/util/perf-regs-arch/perf_regs_csky.c create mode 100644 tools/perf/util/perf-regs-arch/perf_regs_loongarch.c create mode 100644 tools/perf/util/perf-regs-arch/perf_regs_mips.c create mode 100644 tools/perf/util/perf-regs-arch/perf_regs_powerpc.c create mode 100644 tools/perf/util/perf-regs-arch/perf_regs_riscv.c create mode 100644 tools/perf/util/perf-regs-arch/perf_regs_s390.c create mode 100644 tools/perf/util/perf-regs-arch/perf_regs_x86.c -- 2.34.1
