From: Song Liu <songliubraving@fb.com>
To: Jiri Olsa <jolsa@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>,
Jesper Dangaard Brouer <brouer@redhat.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
lkml <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Stanislav Fomichev <sdf@fomichev.me>,
Adrian Hunter <adrian.hunter@intel.com>,
Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCHv3 00/12] perf tools: Display eBPF code in intel_pt trace
Date: Wed, 8 May 2019 21:49:38 +0000 [thread overview]
Message-ID: <2D67A146-0AE0-44A5-8659-55E7975EB67C@fb.com> (raw)
In-Reply-To: <20190508132010.14512-1-jolsa@kernel.org>
> On May 8, 2019, at 6:19 AM, Jiri Olsa <jolsa@kernel.org> wrote:
>
> hi,
> this patchset adds dso support to read and display
> bpf code in intel_pt trace output. I had to change
> some of the kernel maps processing code, so hopefully
> I did not break too many things ;-)
>
> It's now possible to see bpf code flow via:
>
> # perf-with-kcore record pt -e intel_pt//ku -- sleep 1
> # perf-with-kcore script pt --insn-trace --xed
> ...
> sleep 36660 [016] 1057036.806464404: ffffffff811dfba5 trace_call_bpf+0x65 ([kernel.kallsyms]) nopl %eax, (%rax,%rax,1)
> sleep 36660 [016] 1057036.806464404: ffffffff811dfbaa trace_call_bpf+0x6a ([kernel.kallsyms]) movq 0x30(%rbx), %rax
> sleep 36660 [016] 1057036.806464404: ffffffff811dfbae trace_call_bpf+0x6e ([kernel.kallsyms]) leaq 0x38(%rbx), %rsi
> sleep 36660 [016] 1057036.806464404: ffffffff811dfbb2 trace_call_bpf+0x72 ([kernel.kallsyms]) mov %r13, %rdi
> sleep 36660 [016] 1057036.806464404: ffffffff811dfbb5 trace_call_bpf+0x75 ([kernel.kallsyms]) callq 0xffffffff81c00c30
> sleep 36660 [016] 1057036.806464404: ffffffff81c00c30 __x86_indirect_thunk_rax+0x0 ([kernel.kallsyms]) callq 0xffffffff81c00c3c
> sleep 36660 [016] 1057036.806464404: ffffffff81c00c3c __x86_indirect_thunk_rax+0xc ([kernel.kallsyms]) movq %rax, (%rsp)
> sleep 36660 [016] 1057036.806464404: ffffffff81c00c40 __x86_indirect_thunk_rax+0x10 ([kernel.kallsyms]) retq
> sleep 36660 [016] 1057036.806464725: ffffffffa05e89ef bpf_prog_da4fe6b3d2c29b25_trace_return+0x0 (bpf_prog_da4fe6b3d2c29b25_trace_return) pushq %rbp
> sleep 36660 [016] 1057036.806464725: ffffffffa05e89f0 bpf_prog_da4fe6b3d2c29b25_trace_return+0x1 (bpf_prog_da4fe6b3d2c29b25_trace_return) mov %rsp, %rbp
> sleep 36660 [016] 1057036.806464725: ffffffffa05e89f3 bpf_prog_da4fe6b3d2c29b25_trace_return+0x4 (bpf_prog_da4fe6b3d2c29b25_trace_return) sub $0x158, %rsp
> sleep 36660 [016] 1057036.806464725: ffffffffa05e89fa bpf_prog_da4fe6b3d2c29b25_trace_return+0xb (bpf_prog_da4fe6b3d2c29b25_trace_return) sub $0x28, %rbp
> sleep 36660 [016] 1057036.806464725: ffffffffa05e89fe bpf_prog_da4fe6b3d2c29b25_trace_return+0xf (bpf_prog_da4fe6b3d2c29b25_trace_return) movq %rbx, (%rbp)
> sleep 36660 [016] 1057036.806464725: ffffffffa05e8a02 bpf_prog_da4fe6b3d2c29b25_trace_return+0x13 (bpf_prog_da4fe6b3d2c29b25_trace_return) movq %r13, 0x8(%rbp)
> sleep 36660 [016] 1057036.806464725: ffffffffa05e8a06 bpf_prog_da4fe6b3d2c29b25_trace_return+0x17 (bpf_prog_da4fe6b3d2c29b25_trace_return) movq %r14, 0x10(%rbp)
> sleep 36660 [016] 1057036.806464725: ffffffffa05e8a0a bpf_prog_da4fe6b3d2c29b25_trace_return+0x1b (bpf_prog_da4fe6b3d2c29b25_trace_return) movq %r15, 0x18(%rbp)
> sleep 36660 [016] 1057036.806464725: ffffffffa05e8a0e bpf_prog_da4fe6b3d2c29b25_trace_return+0x1f (bpf_prog_da4fe6b3d2c29b25_trace_return) xor %eax, %eax
> sleep 36660 [016] 1057036.806464725: ffffffffa05e8a10 bpf_prog_da4fe6b3d2c29b25_trace_return+0x21 (bpf_prog_da4fe6b3d2c29b25_trace_return) movq %rax, 0x20(%rbp)
> sleep 36660 [016] 1057036.806464725: ffffffffa05e8a14 bpf_prog_da4fe6b3d2c29b25_trace_return+0x25 (bpf_prog_da4fe6b3d2c29b25_trace_return) mov %rdi, %rbx
> sleep 36660 [016] 1057036.806464725: ffffffffa05e8a17 bpf_prog_da4fe6b3d2c29b25_trace_return+0x28 (bpf_prog_da4fe6b3d2c29b25_trace_return) callq 0xffffffff811fed50
> sleep 36660 [016] 1057036.806464725: ffffffff811fed50 bpf_get_current_pid_tgid+0x0 ([kernel.kallsyms]) nopl %eax, (%rax,%rax,1)
> sleep 36660 [016] 1057036.806464725: ffffffff811fed55 bpf_get_current_pid_tgid+0x5 ([kernel.kallsyms]) movq %gs:0x15c00, %rdx
> sleep 36660 [016] 1057036.806464725: ffffffff811fed5e bpf_get_current_pid_tgid+0xe ([kernel.kallsyms]) test %rdx, %rdx
> sleep 36660 [016] 1057036.806464725: ffffffff811fed61 bpf_get_current_pid_tgid+0x11 ([kernel.kallsyms]) jz 0xffffffff811fed79
> sleep 36660 [016] 1057036.806464725: ffffffff811fed63 bpf_get_current_pid_tgid+0x13 ([kernel.kallsyms]) movsxdl 0x494(%rdx), %rax
> sleep 36660 [016] 1057036.806464725: ffffffff811fed6a bpf_get_current_pid_tgid+0x1a ([kernel.kallsyms]) movsxdl 0x490(%rdx), %rdx
> sleep 36660 [016] 1057036.806464725: ffffffff811fed71 bpf_get_current_pid_tgid+0x21 ([kernel.kallsyms]) shl $0x20, %rax
> sleep 36660 [016] 1057036.806464725: ffffffff811fed75 bpf_get_current_pid_tgid+0x25 ([kernel.kallsyms]) or %rdx, %rax
> sleep 36660 [016] 1057036.806464725: ffffffff811fed78 bpf_get_current_pid_tgid+0x28 ([kernel.kallsyms]) retq
> sleep 36660 [016] 1057036.806464725: ffffffffa05e8a1c bpf_prog_da4fe6b3d2c29b25_trace_return+0x2d (bpf_prog_da4fe6b3d2c29b25_trace_return) movq %rax, -0x8(%rbp)
> sleep 36660 [016] 1057036.806464725: ffffffffa05e8a20 bpf_prog_da4fe6b3d2c29b25_trace_return+0x31 (bpf_prog_da4fe6b3d2c29b25_trace_return) xor %edi, %edi
> sleep 36660 [016] 1057036.806464725: ffffffffa05e8a22 bpf_prog_da4fe6b3d2c29b25_trace_return+0x33 (bpf_prog_da4fe6b3d2c29b25_trace_return) movq %rdi, -0x10(%rbp)
> sleep 36660 [016] 1057036.806464725: ffffffffa05e8a26 bpf_prog_da4fe6b3d2c29b25_trace_return+0x37 (bpf_prog_da4fe6b3d2c29b25_trace_return) movq %rdi, -0x18(%rbp)
>
> # perf-core/perf-with-kcore script pt --call-trace
> ...
> sleep 36660 [016] 1057036.806464404: ([kernel.kallsyms] ) kretprobe_perf_func
> sleep 36660 [016] 1057036.806464404: ([kernel.kallsyms] ) trace_call_bpf
> sleep 36660 [016] 1057036.806464404: ([kernel.kallsyms] ) __x86_indirect_thunk_rax
> sleep 36660 [016] 1057036.806464404: ([kernel.kallsyms] ) __x86_indirect_thunk_rax
> sleep 36660 [016] 1057036.806464725: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_get_current_pid_tgid
> sleep 36660 [016] 1057036.806464725: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_ktime_get_ns
> sleep 36660 [016] 1057036.806464725: ([kernel.kallsyms] ) __x86_indirect_thunk_rax
> sleep 36660 [016] 1057036.806464725: ([kernel.kallsyms] ) __x86_indirect_thunk_rax
> sleep 36660 [016] 1057036.806465045: (bpf_prog_da4fe6b3d2c29b25_trace_return ) __htab_map_lookup_elem
> sleep 36660 [016] 1057036.806465366: ([kernel.kallsyms] ) memcmp
> sleep 36660 [016] 1057036.806465687: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_probe_read
> sleep 36660 [016] 1057036.806465687: ([kernel.kallsyms] ) probe_kernel_read
> sleep 36660 [016] 1057036.806465687: ([kernel.kallsyms] ) __check_object_size
> sleep 36660 [016] 1057036.806465687: ([kernel.kallsyms] ) check_stack_object
> sleep 36660 [016] 1057036.806465687: ([kernel.kallsyms] ) copy_user_enhanced_fast_string
> sleep 36660 [016] 1057036.806465687: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_probe_read
> sleep 36660 [016] 1057036.806465687: ([kernel.kallsyms] ) probe_kernel_read
> sleep 36660 [016] 1057036.806465687: ([kernel.kallsyms] ) __check_object_size
> sleep 36660 [016] 1057036.806465687: ([kernel.kallsyms] ) check_stack_object
> sleep 36660 [016] 1057036.806465687: ([kernel.kallsyms] ) copy_user_enhanced_fast_string
> sleep 36660 [016] 1057036.806466008: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_get_current_uid_gid
> sleep 36660 [016] 1057036.806466008: ([kernel.kallsyms] ) from_kgid
> sleep 36660 [016] 1057036.806466008: ([kernel.kallsyms] ) from_kuid
> sleep 36660 [016] 1057036.806466008: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_perf_event_output
> sleep 36660 [016] 1057036.806466328: ([kernel.kallsyms] ) perf_event_output
> sleep 36660 [016] 1057036.806466328: ([kernel.kallsyms] ) perf_prepare_sample
> sleep 36660 [016] 1057036.806466328: ([kernel.kallsyms] ) perf_misc_flags
> sleep 36660 [016] 1057036.806466328: ([kernel.kallsyms] ) __x86_indirect_thunk_rax
> sleep 36660 [016] 1057036.806466328: ([kernel.kallsyms] ) __x86_indirect_thunk_rax
>
>
> v3 changes:
> - fix the padding code in patch 7 (Song Liu)
> - rebased on current Arnaldo's perf/core with merged perf/urgent
>
> v2 changes:
> - fix missing pthread_mutex_unlock [Stanislav Fomichev]
> - removed eBPF dso reusing [Adrian Hunter]
> - merge eBPF and kcore maps [Adrian Hunter]
> - few patches already applied
> - added some perf script helper options
> - patches are rebased on top of Arnaldo's perf/core with perf/urgent merged in
>
> It's also available in here:
> git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
> perf/fixes
>
> thanks,
> jirka
>
For the series:
Acked-by: Song Liu <songliubraving@fb.com>
Thanks!
>
> Cc: Jesper Dangaard Brouer <brouer@redhat.com>
> Cc: Alexei Starovoitov <ast@kernel.org>
> Cc: Daniel Borkmann <daniel@iogearbox.net>
> ---
> Jiri Olsa (12):
> perf tools: Separate generic code in dso__data_file_size
> perf tools: Separate generic code in dso_cache__read
> perf tools: Simplify dso_cache__read function
> perf tools: Add bpf dso read and size hooks
> perf tools: Read also the end of the kernel
> perf tools: Keep zero in pgoff bpf map
> perf script: Pad dso name for --call-trace
> perf tools: Preserve eBPF maps when loading kcore
> perf tests: Add map_groups__merge_in test
> perf script: Add --show-bpf-events to show eBPF related events
> perf script: Remove superfluous bpf event titles
> perf script: Add --show-all-events option
>
> tools/include/linux/kernel.h | 1 +
> tools/lib/vsprintf.c | 19 +++++++++++++++++++
> tools/perf/Documentation/perf-script.txt | 6 ++++++
> tools/perf/builtin-script.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> tools/perf/tests/Build | 1 +
> tools/perf/tests/builtin-test.c | 4 ++++
> tools/perf/tests/map_groups.c | 120 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> tools/perf/tests/tests.h | 1 +
> tools/perf/util/dso.c | 125 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------------------------------
> tools/perf/util/event.c | 4 ++--
> tools/perf/util/machine.c | 31 ++++++++++++++++++++-----------
> tools/perf/util/map.c | 6 ++++++
> tools/perf/util/map_groups.h | 2 ++
> tools/perf/util/symbol.c | 97 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----
> tools/perf/util/symbol_conf.h | 1 +
> 15 files changed, 421 insertions(+), 53 deletions(-)
> create mode 100644 tools/perf/tests/map_groups.c
next prev parent reply other threads:[~2019-05-08 21:50 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-08 13:19 [PATCHv3 00/12] perf tools: Display eBPF code in intel_pt trace Jiri Olsa
2019-05-08 13:19 ` [PATCH 01/12] perf tools: Separate generic code in dso__data_file_size Jiri Olsa
2019-05-13 19:47 ` Arnaldo Carvalho de Melo
2019-05-13 20:00 ` Jiri Olsa
2019-05-23 3:10 ` Namhyung Kim
2019-05-23 7:49 ` Jiri Olsa
2019-05-30 8:08 ` [tip:perf/core] perf dso: Separate generic code in dso__data_file_size() tip-bot for Jiri Olsa
2019-05-08 13:20 ` [PATCH 02/12] perf tools: Separate generic code in dso_cache__read Jiri Olsa
2019-05-30 8:09 ` [tip:perf/core] perf dso: " tip-bot for Jiri Olsa
2019-05-08 13:20 ` [PATCH 03/12] perf tools: Simplify dso_cache__read function Jiri Olsa
2019-05-30 8:09 ` [tip:perf/core] perf dso: " tip-bot for Jiri Olsa
2019-05-08 13:20 ` [PATCH 04/12] perf tools: Add bpf dso read and size hooks Jiri Olsa
2019-05-30 8:10 ` [tip:perf/core] perf dso: Add BPF DSO " tip-bot for Jiri Olsa
2019-05-08 13:20 ` [PATCH 05/12] perf tools: Read also the end of the kernel Jiri Olsa
2019-05-24 18:15 ` Arnaldo Carvalho de Melo
2019-05-24 18:17 ` Arnaldo Carvalho de Melo
2019-05-24 18:46 ` Arnaldo Carvalho de Melo
2019-05-26 13:09 ` Jiri Olsa
2019-05-24 23:21 ` Jiri Olsa
2019-05-28 21:29 ` [tip:perf/urgent] perf machine: " tip-bot for Jiri Olsa
2019-05-08 13:20 ` [PATCH 06/12] perf tools: Keep zero in pgoff bpf map Jiri Olsa
2019-05-30 7:55 ` [tip:perf/core] perf machine: Keep zero in pgoff BPF map tip-bot for Jiri Olsa
2019-05-08 13:20 ` [PATCH 07/12] perf script: Pad dso name for --call-trace Jiri Olsa
2019-05-30 8:11 ` [tip:perf/core] perf script: Pad DSO " tip-bot for Jiri Olsa
2019-05-08 13:20 ` [PATCH 08/12] perf tools: Preserve eBPF maps when loading kcore Jiri Olsa
2019-05-22 16:06 ` Arnaldo Carvalho de Melo
2019-05-22 21:22 ` Jiri Olsa
2019-05-30 7:56 ` [tip:perf/core] " tip-bot for Jiri Olsa
2019-05-08 13:20 ` [PATCH 09/12] perf tests: Add map_groups__merge_in test Jiri Olsa
2019-05-30 8:11 ` [tip:perf/core] " tip-bot for Jiri Olsa
2019-05-08 13:20 ` [PATCH 10/12] perf script: Add --show-bpf-events to show eBPF related events Jiri Olsa
2019-05-30 8:12 ` [tip:perf/core] " tip-bot for Jiri Olsa
2019-05-08 13:20 ` [PATCH 11/12] perf script: Remove superfluous bpf event titles Jiri Olsa
2019-05-30 8:13 ` [tip:perf/core] perf script: Remove superfluous BPF " tip-bot for Jiri Olsa
2019-05-08 13:20 ` [PATCH 12/12] perf script: Add --show-all-events option Jiri Olsa
2019-05-22 16:18 ` Arnaldo Carvalho de Melo
2019-05-22 21:30 ` Jiri Olsa
2019-05-08 21:49 ` Song Liu [this message]
2019-05-08 23:41 ` [PATCHv3 00/12] perf tools: Display eBPF code in intel_pt trace Arnaldo Carvalho de Melo
2019-05-24 0:27 ` Arnaldo Carvalho de Melo
2019-05-24 10:06 ` Jiri Olsa
2019-05-30 10:54 ` Leo Yan
2019-05-30 12:07 ` Jiri Olsa
2019-05-30 12:57 ` Leo Yan
2019-05-30 13:27 ` Jiri Olsa
2019-05-30 13:36 ` Arnaldo Carvalho de Melo
2019-05-30 14:05 ` Leo Yan
2019-05-31 9:19 ` Jiri Olsa
2019-06-02 6:42 ` Leo Yan
2019-05-31 9:09 ` Leo Yan
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