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Message-Id: <20220521130446.4163597-1-leo.yan@linaro.org>
Date: Sat, 21 May 2022 21:04:44 +0800
From: Leo Yan <leo.yan@...aro.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
James Clark <james.clark@....com>,
German Gomez <german.gomez@....com>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Adrian Hunter <adrian.hunter@...el.com>,
Ian Rogers <irogers@...gle.com>,
Eelco Chaudron <echaudro@...hat.com>,
Stephen Brennan <stephen.s.brennan@...cle.com>,
Tanmay Jagdale <tanmay@...vell.com>,
"zengshun . wu" <zengshun.wu@...look.com>,
Al Grant <al.grant@....com>, coresight@...ts.linaro.org,
linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org
Cc: Leo Yan <leo.yan@...aro.org>
Subject: [PATCH v6 0/2] perf script python: Add script for CoreSight disassembly
This patch set is to add CoreSight disassembly script, the python script
can dump assembly, source line and symbols for humans inspecting.
The first patch changes python script engine to expose more information
for DSO and maps, so it's helpful for disassembly with objdump program.
The second patch is to introduce the python script for CoreSight trace
data disassembly for branch samples. It also can dump source line and
symbol info for instruction samples.
This patch set has been tested on Arm64 Juno board:
# perf script -s scripts/python/arm-cs-trace-disasm.py
...
main 6728/6728 [0004] 0.000000000 main+0x40 /root/coresight_test/main.c 15 for (i = 0; i < 10000; i++) {
main 6728/6728 [0004] 0.000000000 main+0x20 /root/coresight_test/main.c 16 val = lib_loop_test(100);
main 6728/6728 [0004] 0.000000000 lib_loop_test@...+0xc /root/coresight_test/main
main 6728/6728 [0004] 0.000000000 lib_loop_test+0xc /root/coresight_test/libcstest.c 8 for (i = 0; i < 5; i++)
main 6728/6728 [0004] 0.000000000 lib_loop_test+0x30
main 6728/6728 [0004] 0.000000000 lib_loop_test+0x30
main 6728/6728 [0004] 0.000000000 lib_loop_test+0x30
main 6728/6728 [0004] 0.000000000 lib_loop_test+0x30
main 6728/6728 [0004] 0.000000000 lib_loop_test+0x30
main 6728/6728 [0004] 0.000000000 lib_loop_test+0x3c /root/coresight_test/libcstest.c 12 }
...
# perf script -s scripts/python/arm-cs-trace-disasm.py -- -d llvm-objdump-11 -k ./vmlinux
ARM CoreSight Trace Data Assembler Dump
ffff800008eb3198 <etm4_enable_hw>:
ffff800008eb3310: c0 38 00 35 cbnz w0, 0xffff800008eb3a28 <etm4_enable_hw+0x890>
ffff800008eb3314: 9f 3f 03 d5 dsb sy
ffff800008eb3318: df 3f 03 d5 isb
ffff800008eb331c: f5 5b 42 a9 ldp x21, x22, [sp, #32]
ffff800008eb3320: fb 73 45 a9 ldp x27, x28, [sp, #80]
ffff800008eb3324: e0 82 40 39 ldrb w0, [x23, #32]
ffff800008eb3328: 60 00 00 34 cbz w0, 0xffff800008eb3334 <etm4_enable_hw+0x19c>
ffff800008eb332c: e0 03 19 aa mov x0, x25
ffff800008eb3330: 8c fe ff 97 bl 0xffff800008eb2d60 <etm4_cs_lock.isra.0.part.0>
main 6055/6055 [004] 0.000000000 etm4_enable_hw+0x198 [kernel.kallsyms]
ffff800008eb2d60 <etm4_cs_lock.isra.0.part.0>:
ffff800008eb2d60: 1f 20 03 d5 nop
ffff800008eb2d64: 1f 20 03 d5 nop
ffff800008eb2d68: 3f 23 03 d5 hint #25
ffff800008eb2d6c: 00 00 40 f9 ldr x0, [x0]
ffff800008eb2d70: 9f 3f 03 d5 dsb sy
ffff800008eb2d74: 00 c0 3e 91 add x0, x0, #4016
ffff800008eb2d78: 1f 00 00 b9 str wzr, [x0]
ffff800008eb2d7c: bf 23 03 d5 hint #29
ffff800008eb2d80: c0 03 5f d6 ret
main 6055/6055 [004] 0.000000000 etm4_cs_lock.isra.0.part.0+0x20
# perf script -s scripts/python/arm-cs-trace-disasm.py -- -d objdump -k ./vmlinux
ARM CoreSight Trace Data Assembler Dump
ffff800008eb3310 <etm4_enable_hw+0x178>:
ffff800008eb3310: 350038c0 cbnz w0, ffff800008eb3a28 <etm4_enable_hw+0x890>
ffff800008eb3314: d5033f9f dsb sy
ffff800008eb3318: d5033fdf isb
ffff800008eb331c: a9425bf5 ldp x21, x22, [sp, #32]
ffff800008eb3320: a94573fb ldp x27, x28, [sp, #80]
ffff800008eb3324: 394082e0 ldrb w0, [x23, #32]
ffff800008eb3328: 34000060 cbz w0, ffff800008eb3334 <etm4_enable_hw+0x19c>
ffff800008eb332c: aa1903e0 mov x0, x25
ffff800008eb3330: 97fffe8c bl ffff800008eb2d60 <etm4_cs_lock.isra.0.part.0>
main 6055/6055 [004] 0.000000000 etm4_enable_hw+0x198 [kernel.kallsyms]
ffff800008eb2d60 <etm4_cs_lock.isra.0.part.0>:
ffff800008eb2d60: d503201f nop
ffff800008eb2d64: d503201f nop
ffff800008eb2d68: d503233f paciasp
ffff800008eb2d6c: f9400000 ldr x0, [x0]
ffff800008eb2d70: d5033f9f dsb sy
ffff800008eb2d74: 913ec000 add x0, x0, #0xfb0
ffff800008eb2d78: b900001f str wzr, [x0]
ffff800008eb2d7c: d50323bf autiasp
ffff800008eb2d80: d65f03c0 ret
main 6055/6055 [004] 0.000000000 etm4_cs_lock.isra.0.part.0+0x20
Changes from v5:
* Updated script for using f-string format (Ian);
* Added Adrian's review tag for patch 01;
* Fixed the issue for printing souce code line;
* Fixed several issues for using python3 (dictionary index,
decode output for 'utf-8').
Changes from v4:
* Enhanced python script engine for DSO and map infos;
* Rewrote the python script, added support for symbol and source line
dumping.
Leo Yan (2):
perf scripting python: Expose dso and map information
perf scripts python: Support Arm CoreSight trace data disassembly
.../scripts/python/arm-cs-trace-disasm.py | 272 ++++++++++++++++++
.../scripting-engines/trace-event-python.c | 21 +-
2 files changed, 289 insertions(+), 4 deletions(-)
create mode 100755 tools/perf/scripts/python/arm-cs-trace-disasm.py
--
2.25.1
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