Messages in this thread | | | Date | Wed, 21 Aug 2019 18:57:04 +0800 | From | Mao Han <> | Subject | Re: [PATCH V4 1/3] riscv: Add perf callchain support |
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Hi Greentime, On Wed, Aug 21, 2019 at 05:16:13PM +0800, Greentime Hu wrote: > Hi Mao, > > Mao Han <han_mao@c-sky.com> 於 2019年8月20日 週二 下午4:57寫道: > > > > This patch add support for perf callchain sampling on riscv platform. > > The return address of leaf function is retrieved from pt_regs as > > it is not saved in the outmost frame. > > > > > > Not sure if I did something wrong. I encounter a build error when I > try to build tools/perf/tests > > CC arch/riscv/util/dwarf-regs.o > arch/riscv/util/dwarf-regs.c:64:5: error: no previous prototype for > ‘regs_query_register_offset’ [-Werror=missing-prototypes] >
This seems becasue I didn't add PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET in tools/perf/arch/riscv/Makefile so the prototype in ./util/include/dwarf-regs.h is not declared. I'll add that in the next version.
> I simply add its prototype and it could be built pass. > This is my testing results. > # ./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 : FAILED! > 15: syscalls:sys_enter_openat event fields : FAILED! > 16: Setup struct perf_event_attr : FAILED! > 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 : Ok > 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 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 > 61: probe libc's inet_pton & backtrace it with ping : FAILED! > 62: Add vfs_getname probe to get syscall args filenames : FAILED! > 63: Check open filename arg using perf trace + vfs_getname: Skip > 64: Use vfs_getname probe to get syscall args filenames : FAILED! > 65: Zstd perf.data compression/decompression : Skip >
The perf test result I got is quiet similar to yours, but with 5 less testcases.
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 : FAILED! 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 : Ok 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 : Ok 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 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
The comparison before/after applied this patch set:
/tools/perf/util# diff perf_test_before perf_test_after 1d0 < # perf test 8c7 < 7: Simple expression parser : FAILED! --- > 7: Simple expression parser : Ok
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