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Date: Thu, 24 Dec 2020 17:13:33 +0900
From: Masami Hiramatsu <mhiramat@...nel.org>
To: Leo Yan <leo.yan@...aro.org>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>,
Will Deacon <will@...nel.org>,
John Garry <john.garry@...wei.com>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
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@...hat.com>,
Namhyung Kim <namhyung@...nel.org>,
Ian Rogers <irogers@...gle.com>,
Alexandre Truong <alexandre.truong@....com>,
He Zhe <zhe.he@...driver.com>,
Thomas Richter <tmricht@...ux.ibm.com>,
Sumanth Korikkar <sumanthk@...ux.ibm.com>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 0/2] perf arm64: Support SDT
Hi Leo,
On Wed, 23 Dec 2020 14:39:03 +0800
Leo Yan <leo.yan@...aro.org> wrote:
> This patch is to enable SDT on Arm64.
>
> Since Arm64 SDT marker in ELF file is different from other archs,
> especially for using stack pointer (sp) to retrieve data for local
> variables, patch 01 is used to fixup the arguments for this special
> case. Patch 02 is to add argument support for Arm64 SDT.
Both patches look good to me.
Acked-by: Masami Hiramatsu <mhiramat@...nel.org> for the seires.
Thank you!
>
> This patch set has been verified on Arm64/x86_64 platforms with a
> testing program usdt_test [1]. The program run the SDT interfaces
> one by one for DTRACE_PROBE, DTRACE_PROBE1, ..., DTRACE_PROBE12, so
> it tries to verify probe with different count of arguments (the
> arguments count is 0 to 12).
>
> The testing flow and result are shown as below:
>
> # perf buildid-cache --add /root/test/usdt_test
> # perf probe sdt_usdt:test_probe
> # perf probe sdt_usdt:test_probe_param1
> # perf probe sdt_usdt:test_probe_param1x
> # perf probe sdt_usdt:test_probe_param2
> # perf probe sdt_usdt:test_probe_param2x
> # perf probe sdt_usdt:test_probe_param3
> # perf probe sdt_usdt:test_probe_param3x
> # perf probe sdt_usdt:test_probe_param4
> # perf probe sdt_usdt:test_probe_param4x
> # perf probe sdt_usdt:test_probe_param5
> # perf probe sdt_usdt:test_probe_param5x
> # perf probe sdt_usdt:test_probe_param6
> # perf probe sdt_usdt:test_probe_param6x
> # perf probe sdt_usdt:test_probe_param7
> # perf probe sdt_usdt:test_probe_param7x
> # perf probe sdt_usdt:test_probe_param8
> # perf probe sdt_usdt:test_probe_param8x
> # perf probe sdt_usdt:test_probe_param9
> # perf probe sdt_usdt:test_probe_param9x
> # perf probe sdt_usdt:test_probe_param10
> # perf probe sdt_usdt:test_probe_param10x
> # perf probe sdt_usdt:test_probe_param11
> # perf probe sdt_usdt:test_probe_param11x
> # perf probe sdt_usdt:test_probe_param12
> # perf probe sdt_usdt:test_probe_param12x
>
> # perf record \
> -e sdt_usdt:test_probe_param1 -e sdt_usdt:test_probe_param1x \
> -e sdt_usdt:test_probe_param2 -e sdt_usdt:test_probe_param2x \
> -e sdt_usdt:test_probe_param3 -e sdt_usdt:test_probe_param3x \
> -e sdt_usdt:test_probe_param4 -e sdt_usdt:test_probe_param4x \
> -e sdt_usdt:test_probe_param5 -e sdt_usdt:test_probe_param5x \
> -e sdt_usdt:test_probe_param6 -e sdt_usdt:test_probe_param6x \
> -e sdt_usdt:test_probe_param7 -e sdt_usdt:test_probe_param7x \
> -e sdt_usdt:test_probe_param8 -e sdt_usdt:test_probe_param8x \
> -e sdt_usdt:test_probe_param9 -e sdt_usdt:test_probe_param9x \
> -e sdt_usdt:test_probe_param10 -e sdt_usdt:test_probe_param10x \
> -e sdt_usdt:test_probe_param11 -e sdt_usdt:test_probe_param11x \
> -e sdt_usdt:test_probe_param12 -e sdt_usdt:test_probe_param12x \
> -e sdt_usdt:test_probe -aR sleep 5
>
> # ./usdt_test => Execute in another terminal
>
> # perf script
>
> usdt_test 7999 [003] 80493.418276: sdt_usdt:test_probe: (aaaab0d80714)
> usdt_test 7999 [003] 80493.418352: sdt_usdt:test_probe_param1: (aaaab0d80728) arg1=1
> usdt_test 7999 [003] 80493.418379: sdt_usdt:test_probe_param2: (aaaab0d80744) arg1=1 arg2=2
> usdt_test 7999 [003] 80493.418405: sdt_usdt:test_probe_param3: (aaaab0d80764) arg1=1 arg2=2 arg3=3
> usdt_test 7999 [003] 80493.418432: sdt_usdt:test_probe_param4: (aaaab0d80788) arg1=1 arg2=2 arg3=3 arg4=4
> usdt_test 7999 [003] 80493.418459: sdt_usdt:test_probe_param5: (aaaab0d807b0) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5
> usdt_test 7999 [003] 80493.418487: sdt_usdt:test_probe_param6: (aaaab0d807dc) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5 arg6=6
> usdt_test 7999 [003] 80493.418516: sdt_usdt:test_probe_param7: (aaaab0d8080c) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5 arg6=6 arg7=7
> usdt_test 7999 [003] 80493.418545: sdt_usdt:test_probe_param8: (aaaab0d80840) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5 arg6=6 arg7=7 arg8=8
> usdt_test 7999 [003] 80493.418574: sdt_usdt:test_probe_param9: (aaaab0d80874) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5 arg6=6 arg7=7 arg8=8 arg9=9
> usdt_test 7999 [003] 80493.418603: sdt_usdt:test_probe_param10: (aaaab0d808a8) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5 arg6=6 arg7=7 arg8=8 arg9=9 arg10=10
> usdt_test 7999 [003] 80493.418632: sdt_usdt:test_probe_param11: (aaaab0d808dc) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5 arg6=6 arg7=7 arg8=8 arg9=9 arg10=10 arg11=11
> usdt_test 7999 [003] 80493.418662: sdt_usdt:test_probe_param12: (aaaab0d80910) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5 arg6=6 arg7=7 arg8=8 arg9=9 arg10=10 arg11=11 arg12=12
> usdt_test 7999 [003] 80493.418687: sdt_usdt:test_probe_param1x: (aaaab0d8092c) arg1=1
> usdt_test 7999 [003] 80493.418713: sdt_usdt:test_probe_param2x: (aaaab0d80950) arg1=1 arg2=2
> usdt_test 7999 [003] 80493.418739: sdt_usdt:test_probe_param3x: (aaaab0d8097c) arg1=1 arg2=2 arg3=3
> usdt_test 7999 [003] 80493.418766: sdt_usdt:test_probe_param4x: (aaaab0d809b0) arg1=1 arg2=2 arg3=3 arg4=4
> usdt_test 7999 [003] 80493.418792: sdt_usdt:test_probe_param5x: (aaaab0d809ec) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5
> usdt_test 7999 [003] 80493.418820: sdt_usdt:test_probe_param6x: (aaaab0d80a30) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5 arg6=6
> usdt_test 7999 [003] 80493.418847: sdt_usdt:test_probe_param7x: (aaaab0d80a7c) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5 arg6=6 arg7=7
> usdt_test 7999 [003] 80493.418875: sdt_usdt:test_probe_param8x: (aaaab0d80ad0) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5 arg6=6 arg7=7 arg8=8
> usdt_test 7999 [003] 80493.418904: sdt_usdt:test_probe_param9x: (aaaab0d80b2c) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5 arg6=6 arg7=7 arg8=8 arg9=9
> usdt_test 7999 [003] 80493.418933: sdt_usdt:test_probe_param10x: (aaaab0d80b90) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5 arg6=6 arg7=7 arg8=8 arg9=9 arg10=10
> usdt_test 7999 [003] 80493.418962: sdt_usdt:test_probe_param11x: (aaaab0d80bfc) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5 arg6=6 arg7=7 arg8=8 arg9=9 arg10=10 arg11=11
> usdt_test 7999 [003] 80493.418991: sdt_usdt:test_probe_param12x: (aaaab0d80cb0) arg1=1 arg2=2 arg3=3 arg4=4 arg5=5 arg6=6 arg7=7 arg8=8 arg9=281474762776336 arg10=281474762776340 arg11=281474762776344 arg12=281474762776348
>
> [1] https://people.linaro.org/~leo.yan/debug/perf/usdt_test.c
>
>
> Leo Yan (2):
> perf probe: Fixup Arm64 SDT arguments
> perf arm64: Add argument support for SDT
>
> tools/perf/arch/arm64/util/perf_regs.c | 94 ++++++++++++++++++++++++++
> tools/perf/util/probe-file.c | 32 ++++++++-
> 2 files changed, 124 insertions(+), 2 deletions(-)
>
> --
> 2.17.1
>
--
Masami Hiramatsu <mhiramat@...nel.org>
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