Nice job, thank you :) On Wed, Sep 4, 2019 at 3:26 PM Greentime Hu <green.hu@xxxxxxxxx> wrote: > > Mao Han <han_mao@xxxxxxxxx> 於 2019年8月29日 週四 下午2:57寫道： > > > > This patch set add perf callchain(FP/DWARF) support for RISC-V. > > It comes from the csky version callchain support with some > > slight modifications. The patchset base on Linux 5.3-rc6. > > > > Changes since v5: > > - use walk_stackframe from stacktrace.c to handle > > kernel callchain unwinding(fix invalid mem access) > > > > Changes since v4: > > - Add missing PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET > > verified with extra CFLAGS(-Wall -Werror) > > > > Changes since v3: > > - Add more strict check for unwind_frame_kernel > > - update for kernel 5.3 > > > > Changes since v2: > > - fix inconsistent comment > > - force to build kernel with -fno-omit-frame-pointer if perf > > event is enabled > > > > Changes since v1: > > - simplify implementation and code convention > > > > Cc: Paul Walmsley <paul.walmsley@xxxxxxxxxx> > > Cc: Greentime Hu <green.hu@xxxxxxxxx> > > Cc: Palmer Dabbelt <palmer@xxxxxxxxxx> > > Cc: linux-riscv <linux-riscv@xxxxxxxxxxxxxxxxxxx> > > Cc: Christoph Hellwig <hch@xxxxxx> > > Cc: Guo Ren <guoren@xxxxxxxxxx> > > > > Mao Han (3): > > riscv: Add perf callchain support > > riscv: Add support for perf registers sampling > > riscv: Add support for libdw > > > > arch/riscv/Kconfig | 2 + > > arch/riscv/Makefile | 3 + > > arch/riscv/include/uapi/asm/perf_regs.h | 42 ++++++++++++ > > arch/riscv/kernel/Makefile | 4 +- > > arch/riscv/kernel/perf_callchain.c | 95 ++++++++++++++++++++++++++ > > arch/riscv/kernel/perf_regs.c | 44 ++++++++++++ > > arch/riscv/kernel/stacktrace.c | 2 +- > > tools/arch/riscv/include/uapi/asm/perf_regs.h | 42 ++++++++++++ > > tools/perf/Makefile.config | 6 +- > > tools/perf/arch/riscv/Build | 1 + > > tools/perf/arch/riscv/Makefile | 4 ++ > > tools/perf/arch/riscv/include/perf_regs.h | 96 +++++++++++++++++++++++++++ > > tools/perf/arch/riscv/util/Build | 2 + > > tools/perf/arch/riscv/util/dwarf-regs.c | 72 ++++++++++++++++++++ > > tools/perf/arch/riscv/util/unwind-libdw.c | 57 ++++++++++++++++ > > 15 files changed, 469 insertions(+), 3 deletions(-) > > create mode 100644 arch/riscv/include/uapi/asm/perf_regs.h > > create mode 100644 arch/riscv/kernel/perf_callchain.c > > create mode 100644 arch/riscv/kernel/perf_regs.c > > create mode 100644 tools/arch/riscv/include/uapi/asm/perf_regs.h > > create mode 100644 tools/perf/arch/riscv/Build > > create mode 100644 tools/perf/arch/riscv/Makefile > > create mode 100644 tools/perf/arch/riscv/include/perf_regs.h > > create mode 100644 tools/perf/arch/riscv/util/Build > > create mode 100644 tools/perf/arch/riscv/util/dwarf-regs.c > > create mode 100644 tools/perf/arch/riscv/util/unwind-libdw.c > > > > Tested-by: Greentime Hu <greentime.hu@xxxxxxxxxx> > > I tested this patchset based on v5.3-rc6 and it can use dwarf or fp to > backtrace in Unleashed board. > > # perf record -e cpu-clock --call-graph dwarf ls -l / > total 4 > drwxr-xr-x 2 root root 0 Aug 26 2019 bin > drwxr-xr-x 5 root root 12720 Jan 1 00:00 dev > drwxr-xr-x 5 root root 0 Jan 1 00:00 etc > -rwxr-xr-x 1 root root 178 Aug 26 2019 init > drwxr-xr-x 2 root root 0 Aug 26 2019 lib > lrwxrwxrwx 1 root root 3 Aug 19 2019 lib64 -> lib > lrwxrwxrwx 1 root root 11 Aug 19 2019 linuxrc -> bin/busybox > drwxr-xr-x 2 root root 0 Aug 19 2019 media > drwxr-xr-x 2 root root 0 Aug 19 2019 mnt > drwxr-xr-x 2 root root 0 Aug 19 2019 opt > dr-xr-xr-x 66 root root 0 Jan 1 00:00 proc > drwx------ 3 root root 0 Jan 1 00:01 root > drwxr-xr-x 3 root root 140 Jan 1 00:00 run > drwxr-xr-x 2 root root 0 Aug 19 2019 sbin > dr-xr-xr-x 11 root root 0 Jan 1 00:00 sys > drwxrwxrwt 2 root root 60 Jan 1 00:00 tmp > drwxr-xr-x 6 root root 0 Aug 26 2019 usr > drwxr-xr-x 4 root root 0 Aug 26 2019 var > [ perf record: Woken up 1 times to write data ] > [ perf record: Captured and wrote 0.175 MB perf.data (21 samples) ] > > # perf record -e cpu-clock --call-graph fp ls -l / > total 4 > drwxr-xr-x 2 root root 0 Aug 26 2019 bin > drwxr-xr-x 5 root root 12720 Jan 1 00:00 dev > drwxr-xr-x 5 root root 0 Jan 1 00:00 etc > -rwxr-xr-x 1 root root 178 Aug 26 2019 init > drwxr-xr-x 2 root root 0 Aug 26 2019 lib > lrwxrwxrwx 1 root root 3 Aug 19 2019 lib64 -> lib > lrwxrwxrwx 1 root root 11 Aug 19 2019 linuxrc -> bin/busybox > drwxr-xr-x 2 root root 0 Aug 19 2019 media > drwxr-xr-x 2 root root 0 Aug 19 2019 mnt > drwxr-xr-x 2 root root 0 Aug 19 2019 opt > dr-xr-xr-x 66 root root 0 Jan 1 00:00 proc > drwx------ 3 root root 0 Jan 1 00:00 root > drwxr-xr-x 3 root root 140 Jan 1 00:00 run > drwxr-xr-x 2 root root 0 Aug 19 2019 sbin > dr-xr-xr-x 11 root root 0 Jan 1 00:00 sys > drwxrwxrwt 2 root root 60 Jan 1 00:00 tmp > drwxr-xr-x 6 root root 0 Aug 26 2019 usr > drwxr-xr-x 4 root root 0 Aug 26 2019 var > [ perf record: Woken up 1 times to write data ] > [ perf record: Captured and wrote 0.004 MB perf.data (19 samples) ] > > # perf test > 1: vmlinux symtab matches kallsyms : Skip > 2: Detect openat syscall event : FAILED! > 3: Detect openat syscall event on all cpus : FAILED! > 4: Read samples using the mmap interface : FAILED! > 5: Test data source output : Ok > 6: Parse event definition strings : FAILED! > 7: Simple expression parser : Ok > 8: PERF_RECORD_* events & perf_sample fields : FAILED! > 9: Parse perf pmu format : Ok > 10: DSO data read : Ok > 11: DSO data cache : Ok > 12: DSO data reopen : Ok > 13: Roundtrip evsel->name : Ok > 14: Parse sched tracepoints fields : Ok > 15: syscalls:sys_enter_openat event fields : FAILED! > 16: Setup struct perf_event_attr : Skip > 17: Match and link multiple hists : Ok > 18: 'import perf' in python : FAILED! > 19: Breakpoint overflow signal handler : FAILED! > 20: Breakpoint overflow sampling : FAILED! > 21: Breakpoint accounting : Skip > 22: Watchpoint : > 22.1: Read Only Watchpoint : FAILED! > 22.2: Write Only Watchpoint : FAILED! > 22.3: Read / Write Watchpoint : FAILED! > 22.4: Modify Watchpoint : FAILED! > 23: Number of exit events of a simple workload : Ok > 24: Software clock events period values : Ok > 25: Object code reading : Ok > 26: Sample parsing : Ok > 27: Use a dummy software event to keep tracking: Ok > 28: Parse with no sample_id_all bit set : Ok > 29: Filter hist entries : Ok > 30: Lookup mmap thread : Ok > 31: Share thread mg : Ok > 32: Sort output of hist entries : Ok > 33: Cumulate child hist entries : Ok > 34: Track with sched_switch : FAILED! > 35: Filter fds with revents mask in a fdarray : Ok > 36: Add fd to a fdarray, making it autogrow : Ok > 37: kmod_path__parse : Ok > 38: Thread map : Ok > 39: LLVM search and compile : > 39.1: Basic BPF llvm compile : Skip > 39.2: kbuild searching : Skip > 39.3: Compile source for BPF prologue generation: Skip > 39.4: Compile source for BPF relocation : Skip > 40: Session topology : FAILED! > 41: BPF filter : > 41.1: Basic BPF filtering : Skip > 41.2: BPF pinning : Skip > 41.3: BPF prologue generation : Skip > 41.4: BPF relocation checker : Skip > 42: Synthesize thread map : Ok > 43: Remove thread map : Ok > 44: Synthesize cpu map : Ok > 45: Synthesize stat config : Ok > 46: Synthesize stat : Ok > 47: Synthesize stat round : Ok > 48: Synthesize attr update : Ok > 49: Event times : Ok > 50: Read backward ring buffer : Skip > 51: Print cpu map : Ok > 52: Probe SDT events : Skip > 53: is_printable_array : Ok > 54: Print bitmap : Ok > 55: perf hooks : Ok > 56: builtin clang support : Skip (not compiled in) > 57: unit_number__scnprintf : Ok > 58: mem2node : Ok > 59: time utils : Ok > 60: map_groups__merge_in : Ok > # -- Best Regards Guo Ren ML: https://lore.kernel.org/linux-csky/
