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References: <20230623054416.160858-1-yangjihong1@huawei.com>
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From:   Namhyung Kim <namhyung@kernel.org>
Date:   Sat, 24 Jun 2023 16:38:32 -0700
Message-ID: <CAM9d7chA4P8JmABgD=EfruKjTa2dEnFYSYAkeF4RUT=NQKZtMQ@mail.gmail.com>
Subject: Re: [PATCH v5 0/4] perf tools: Add printing perf_event_attr `config`
 and `id` symbol in perf_event_attr__fprintf()
To:     Yang Jihong <yangjihong1@huawei.com>
Cc:     peterz@infradead.org, mingo@redhat.com, acme@kernel.org,
        mark.rutland@arm.com, alexander.shishkin@linux.intel.com,
        jolsa@kernel.org, irogers@google.com, adrian.hunter@intel.com,
        anshuman.khandual@arm.com, jesussanp@google.com,
        linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
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On Thu, Jun 22, 2023 at 10:46 PM Yang Jihong <yangjihong1@huawei.com> wrote:
>
> Add printing perf_event_attr `config` and `id` symbol to improve the readability of debugging information.
>
> Before:
>
>   # perf --debug verbose=2 record -e cycles,cpu-clock,sched:sched_switch,branch-load-misses,r101,mem:0x0 -C 0 true
>   <SNIP>
>   ------------------------------------------------------------
>   perf_event_attr:
>     size                             136
>     { sample_period, sample_freq }   4000
>     sample_type                      IP|TID|TIME|CPU|PERIOD|IDENTIFIER
>     read_format                      ID
>     disabled                         1
>     inherit                          1
>     freq                             1
>     sample_id_all                    1
>     exclude_guest                    1
>   ------------------------------------------------------------
>   sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 5
>   ------------------------------------------------------------
>   perf_event_attr:
>     type                             1
>     size                             136
>     { sample_period, sample_freq }   4000
>     sample_type                      IP|TID|TIME|CPU|PERIOD|IDENTIFIER
>     read_format                      ID
>     disabled                         1
>     inherit                          1
>     freq                             1
>     sample_id_all                    1
>     exclude_guest                    1
>   ------------------------------------------------------------
>   sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 6
>   ------------------------------------------------------------
>   perf_event_attr:
>     type                             2
>     size                             136
>     config                           0x143
>     { sample_period, sample_freq }   1
>     sample_type                      IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER
>     read_format                      ID
>     disabled                         1
>     inherit                          1
>     sample_id_all                    1
>     exclude_guest                    1
>   ------------------------------------------------------------
>   sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 7
>   ------------------------------------------------------------
>   perf_event_attr:
>     type                             3
>     size                             136
>     config                           0x10005
>     { sample_period, sample_freq }   4000
>     sample_type                      IP|TID|TIME|CPU|PERIOD|IDENTIFIER
>     read_format                      ID
>     disabled                         1
>     inherit                          1
>     freq                             1
>     sample_id_all                    1
>     exclude_guest                    1
>   ------------------------------------------------------------
>   sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 9
>   ------------------------------------------------------------
>   perf_event_attr:
>     type                             4
>     size                             136
>     config                           0x101
>     { sample_period, sample_freq }   4000
>     sample_type                      IP|TID|TIME|CPU|PERIOD|IDENTIFIER
>     read_format                      ID
>     disabled                         1
>     inherit                          1
>     freq                             1
>     sample_id_all                    1
>     exclude_guest                    1
>   ------------------------------------------------------------
>   sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 10
>   ------------------------------------------------------------
>   perf_event_attr:
>     type                             5
>     size                             136
>     { sample_period, sample_freq }   1
>     sample_type                      IP|TID|TIME|CPU|IDENTIFIER
>     read_format                      ID
>     disabled                         1
>     inherit                          1
>     sample_id_all                    1
>     exclude_guest                    1
>     bp_type                          3
>     { bp_len, config2 }              0x4
>   ------------------------------------------------------------
>   <SNIP>
>
> After:
>
>   # perf --debug verbose=2 record -e cycles,cpu-clock,sched:sched_switch,branch-load-misses,r101,mem:0x0 -C 0 true
>   <SNIP>
>   ------------------------------------------------------------
>   perf_event_attr:
>     type                             0 (PERF_TYPE_HARDWARE)
>     size                             136
>     config                           0 (PERF_COUNT_HW_CPU_CYCLES)
>     { sample_period, sample_freq }   4000
>     sample_type                      IP|TID|TIME|CPU|PERIOD|IDENTIFIER
>     read_format                      ID
>     disabled                         1
>     inherit                          1
>     freq                             1
>     sample_id_all                    1
>     exclude_guest                    1
>   ------------------------------------------------------------
>   sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 5
>   ------------------------------------------------------------
>   perf_event_attr:
>     type                             1 (PERF_TYPE_SOFTWARE)
>     size                             136
>     config                           0 (PERF_COUNT_SW_CPU_CLOCK)
>     { sample_period, sample_freq }   4000
>     sample_type                      IP|TID|TIME|CPU|PERIOD|IDENTIFIER
>     read_format                      ID
>     disabled                         1
>     inherit                          1
>     freq                             1
>     sample_id_all                    1
>     exclude_guest                    1
>   ------------------------------------------------------------
>   sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 6
>   ------------------------------------------------------------
>   perf_event_attr:
>     type                             2 (PERF_TYPE_TRACEPOINT)
>     size                             136
>     config                           0x143 (sched:sched_switch)
>     { sample_period, sample_freq }   1
>     sample_type                      IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER
>     read_format                      ID
>     disabled                         1
>     inherit                          1
>     sample_id_all                    1
>     exclude_guest                    1
>   ------------------------------------------------------------
>   sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 7
>   ------------------------------------------------------------
>   perf_event_attr:
>     type                             3 (PERF_TYPE_HW_CACHE)
>     size                             136
>     config                           0x10005 (PERF_COUNT_HW_CACHE_RESULT_MISS | PERF_COUNT_HW_CACHE_OP_READ | PERF_COUNT_HW_CACHE_BPU)
>     { sample_period, sample_freq }   4000
>     sample_type                      IP|TID|TIME|CPU|PERIOD|IDENTIFIER
>     read_format                      ID
>     disabled                         1
>     inherit                          1
>     freq                             1
>     sample_id_all                    1
>     exclude_guest                    1
>   ------------------------------------------------------------
>   sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 9
>   ------------------------------------------------------------
>   perf_event_attr:
>     type                             4 (PERF_TYPE_RAW)
>     size                             136
>     config                           0x101
>     { sample_period, sample_freq }   4000
>     sample_type                      IP|TID|TIME|CPU|PERIOD|IDENTIFIER
>     read_format                      ID
>     disabled                         1
>     inherit                          1
>     freq                             1
>     sample_id_all                    1
>     exclude_guest                    1
>   ------------------------------------------------------------
>   sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 10
>   ------------------------------------------------------------
>   perf_event_attr:
>     type                             5 (PERF_TYPE_BREAKPOINT)
>     size                             136
>     config                           0
>     { sample_period, sample_freq }   1
>     sample_type                      IP|TID|TIME|CPU|IDENTIFIER
>     read_format                      ID
>     disabled                         1
>     inherit                          1
>     sample_id_all                    1
>     exclude_guest                    1
>     bp_type                          3
>     { bp_len, config2 }              0x4
>   ------------------------------------------------------------
>   sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 11
>   ------------------------------------------------------------
>   perf_event_attr:
>     type                             1 (PERF_TYPE_SOFTWARE)
>     size                             136
>     config                           0x9 (PERF_COUNT_SW_DUMMY)
>     { sample_period, sample_freq }   4000
>     sample_type                      IP|TID|TIME|CPU|PERIOD|IDENTIFIER
>     read_format                      ID
>     inherit                          1
>     mmap                             1
>     comm                             1
>     freq                             1
>     task                             1
>     sample_id_all                    1
>     mmap2                            1
>     comm_exec                        1
>     ksymbol                          1
>     bpf_event                        1
>   ------------------------------------------------------------
>   sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 12
>   <SNIP>
>
> Yang Jihong (4):
>   perf trace-event-info: Add tracepoint_id_to_name() helper
>   perf tools: Extend PRINT_ATTRf to support printing of members with a
>     value of 0
>   perf tools: Add printing perf_event_attr type symbol in
>     perf_event_attr__fprintf()
>   perf tools: Add printing perf_event_attr config symbol in
>     perf_event_attr__fprintf()

Applied to perf-tools-next after fixing 4/4, thanks!