linux-kernel - Re: [PATCH 12/12] perf script: Add --show-all-events option

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Message-ID: <20190522161804.GG30271@kernel.org>
Date:   Wed, 22 May 2019 13:18:04 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Stanislav Fomichev <sdf@...ichev.me>,
        Song Liu <songliubraving@...com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Thomas Richter <tmricht@...ux.ibm.com>
Subject: Re: [PATCH 12/12] perf script: Add --show-all-events option

Em Wed, May 08, 2019 at 03:20:10PM +0200, Jiri Olsa escreveu:
> Adding --show-all-events option to show all
> side-bad events with single option, like:
> 
>   $ perf script --show-all-events
>   swapper     0 [000]     0.000000: PERF_RECORD_MMAP -1/0: [0xffffffffa6000000(0xc00e41) @ 0xffffffffa6000000]: x [kernel.kallsyms]_text
>   ...
>   swapper     0 [000]     0.000000: PERF_RECORD_KSYMBOL addr ffffffffc01bc362 len 229 type 1 flags 0x0 name bpf_prog_7be49e3934a125ba
>   swapper     0 [000]     0.000000: PERF_RECORD_BPF_EVENT type 1, flags 0, id 29
>   ...
>   swapper     0 [000]     0.000000: PERF_RECORD_FORK(1:1):(0:0)
>   systemd     0 [000]     0.000000: PERF_RECORD_COMM: systemd:1/1
>   ...
>   swapper     0 [000] 63587.039518:          1 cycles:  ffffffffa60698b4 [unknown] ([kernel.kallsyms])
>   swapper     0 [000] 63587.039522:          1 cycles:  ffffffffa60698b4 [unknown] ([kernel.kallsyms])

Strange:

[root@...co pt]# 
[root@...co pt]# perf evlist -v
intel_pt//ku: type: 8, size: 112, config: 0x300e601, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, exclude_hv: 1, sample_id_all: 1
dummy:u: type: 1, size: 112, config: 0x9, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|IDENTIFIER, read_format: ID, inherit: 1, exclude_kernel: 1, exclude_hv: 1, mmap: 1, comm: 1, task: 1, sample_id_all: 1, mmap2: 1, comm_exec: 1, context_switch: 1, ksymbol: 1, bpf_event: 1
[root@...co pt]# 

Then:

[root@...co pt]# perf script --show-bpf-events  | head
    0 PERF_RECORD_KSYMBOL addr ffffffffc029a6c3 len 229 type 1 flags 0x0 name bpf_prog_7be49e3934a125ba
    0 PERF_RECORD_BPF_EVENT type 1, flags 0, id 47
    0 PERF_RECORD_KSYMBOL addr ffffffffc029c1ae len 229 type 1 flags 0x0 name bpf_prog_2a142ef67aaad174
    0 PERF_RECORD_BPF_EVENT type 1, flags 0, id 48
    0 PERF_RECORD_KSYMBOL addr ffffffffc02ddd1c len 229 type 1 flags 0x0 name bpf_prog_7be49e3934a125ba
    0 PERF_RECORD_BPF_EVENT type 1, flags 0, id 49
    0 PERF_RECORD_KSYMBOL addr ffffffffc02dfc11 len 229 type 1 flags 0x0 name bpf_prog_2a142ef67aaad174
    0 PERF_RECORD_BPF_EVENT type 1, flags 0, id 50
    0 PERF_RECORD_KSYMBOL addr ffffffffc045da0a len 229 type 1 flags 0x0 name bpf_prog_7be49e3934a125ba
    0 PERF_RECORD_BPF_EVENT type 1, flags 0, id 51
[root@...co pt]#

But:

[root@...co pt]# perf script --show-all-events  | head
Intel Processor Trace requires ordered events
0x2a0 [0x60]: failed to process type: 1 [Invalid argument]
[root@...co pt]#

So I have all patches but this last one, will test and push Ingo's way
so that we make progress, we can get this one later after we figure this
out.

- Arnaldo