linux.git/tools/perf/util/arm-spe-decoder, branch v6.11

perf util: Make util its own library

2024-06-26T18:07:42+00:00

Make the util directory into its own library. This is done to avoid
compiling code twice, once for the perf tool and once for the perf
python module. For convenience:
  arch/common.c
  scripts/perl/Perf-Trace-Util/Context.c
  scripts/python/Perf-Trace-Util/Context.c
are made part of this library.

Signed-off-by: Ian Rogers 
Reviewed-by: James Clark 
Cc: Suzuki K Poulose 
Cc: Kees Cook 
Cc: Palmer Dabbelt 
Cc: Albert Ou 
Cc: Nick Terrell 
Cc: Gary Guo 
Cc: Alex Gaynor 
Cc: Boqun Feng 
Cc: Wedson Almeida Filho 
Cc: Ze Gao 
Cc: Alice Ryhl 
Cc: Andrei Vagin 
Cc: Yicong Yang 
Cc: Jonathan Cameron 
Cc: Guo Ren 
Cc: Miguel Ojeda 
Cc: Will Deacon 
Cc: Mike Leach 
Cc: Leo Yan 
Cc: Oliver Upton 
Cc: John Garry 
Cc: Benno Lossin 
Cc: Björn Roy Baron 
Cc: Andreas Hindborg 
Cc: Paul Walmsley 
Signed-off-by: Namhyung Kim 
Link: https://lore.kernel.org/r/20240625214117.953777-7-irogers@google.com

perf arm-spe: Unaligned pointer work around

2024-05-28T18:29:49+00:00

Use get_unaligned_leXX instead of leXX_to_cpu to handle unaligned
pointers. Such pointers occur with libFuzzer testing.

A similar change for intel-pt was done in:
https://lore.kernel.org/r/20231005190451.175568-6-adrian.hunter@intel.com

Signed-off-by: Ian Rogers 
Reviewed-by: James Clark 
Signed-off-by: Namhyung Kim 
Link: https://lore.kernel.org/r/20240514052402.3031871-1-irogers@google.com

perf arm-spe: Fix a dangling Documentation/arm64 reference

2023-06-21T14:53:31+00:00

The arm64 documentation has moved under Documentation/arch/.  Fix up a
dangling reference to match.

Cc: Peter Zijlstra 
Cc: Ingo Molnar 
Cc: Mark Rutland 
Cc: Alexander Shishkin 
Cc: Jiri Olsa 
Acked-by: Catalin Marinas 
Acked-by: Arnaldo Carvalho de Melo 
Signed-off-by: Jonathan Corbet

perf arm-spe: Add raw decoding for SPEv1.3 MTE and MOPS load/store

2023-04-04T12:39:57+00:00

Arm SPEv1.3 adds new load/store operation subclasses for Memory Tagging
Extension (MTE) and memory operations (MOPS). The memory operations
are memcpy and memset. Add support for decoding these new subclasses in
the raw decoding.

Reviewed-by: Leo Yan 
Cc: Alexander Shishkin 
Cc: Ian Rogers 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Leo Yan 
Cc: Mark Rutland 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: https://lore.kernel.org/r/20230327162057.4057188-1-robh@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Refactor arm-spe to support operation packet type

2023-03-20T22:27:52+00:00

Extend the decoder of Arm SPE records to support more fields from the
operation packet type.

Not all fields are being decoded by this commit. Only those needed to
support the use-case SVE load/store/other operations.

Suggested-by: Leo Yan 
Signed-off-by: German Gomez 
Acked-by: Ian Rogers 
Cc: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Anshuman.Khandual@arm.com
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: John Garry 
Cc: Mark Rutland 
Cc: Mike Leach 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Will Deacon 
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20230320151509.1137462-2-james.clark@arm.com
Signed-off-by: James Clark 
Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Add raw decoding for SPEv1.2 previous branch address

2023-02-03T20:12:25+00:00

Arm SPEv1.2 adds a new optional address packet type: previous branch
target. The recorded address is the target virtual address of the most
recently taken branch in program order.

Add support for decoding the address packet in raw dumps.

Reviewed-by: Leo Yan 
Signed-off-by: Rob Herring 
Cc: Alexander Shishkin 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Mark Rutland 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: https://lore.kernel.org/r/20230203162401.132931-1-robh@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Only warn once for each unsupported address packet

2023-02-02T19:32:19+00:00

Unknown address packet indexes are not an error as the Arm architecture
can (and has with SPEv1.2) define new ones and implementation defined
ones are also allowed. The error message for every occurrence of the
packet is needlessly noisy as well. Change the message to print just
once for each unknown index.

Reviewed-by: Leo Yan 
Signed-off-by: Rob Herring 
Cc: Alexander Shishkin 
Cc: Ingo Molnar 
Cc: James Clark 
Cc: Jiri Olsa 
Cc: Mark Rutland 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Will Deacon 
Link: https://lore.kernel.org/r/20230127205546.667740-1-robh@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Use SPE data source for neoverse cores

2022-08-11T22:12:01+00:00

When synthesizing data from SPE, augment the type with source information
for Arm Neoverse cores. The field is IMPLDEF but the Neoverse cores all use
the same encoding. I can't find encoding information for any other SPE
implementations to unify their choices with Arm's thus that is left for
future work.

This change populates the mem_lvl_num for Neoverse cores as well as the
deprecated mem_lvl namespace.

Reviewed-by: German Gomez 
Reviewed-by: Leo Yan 
Signed-off-by: Ali Saidi 
Tested-by: Leo Yan 
Cc: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Anshuman Khandual 
Cc: Gustavo A. R. Silva 
Cc: Ian Rogers 
Cc: Ingo Molnar 
Cc: James Clark 
Cc: Jiri Olsa 
Cc: John Garry 
Cc: Kajol Jain 
Cc: Like Xu 
Cc: Mark Rutland 
Cc: Mike Leach 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Timothy Hayes 
Cc: Will Deacon 
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20220811062451.435810-4-leo.yan@linaro.org
Signed-off-by: Leo Yan 
Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Add SPE total latency as PERF_SAMPLE_WEIGHT

2021-12-16T15:18:11+00:00

Use total latency info in the SPE counter packet as sample weight so
that we can see it in local_weight and (global) weight sort keys.

Maybe we can use PERF_SAMPLE_WEIGHT_STRUCT to support ins_lat as well
but I'm not sure which latency it matches.  So just adding total latency
first.

Reviewed-by: Leo Yan 
Signed-off-by: Namhyung Kim 
Cc: Andi Kleen 
Cc: German Gomez 
Cc: Ian Rogers 
Cc: James Clark 
Cc: Jiri Olsa 
Cc: Mark Rutland 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lore.kernel.org/lkml/20211201220855.1260688-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Save context ID in record

2021-11-13T21:11:51+00:00

This patch is to save context ID in record, this will be used to set TID
for samples.

Reviewed-by: Leo Yan 
Signed-off-by: German Gomez 
Acked-by: Namhyung Kim 
Cc: Alexander Shishkin 
Cc: Jiri Olsa 
Cc: John Garry 
Cc: Mark Rutland 
Cc: Mathieu Poirier 
Cc: Will Deacon 
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20211111133625.193568-4-german.gomez@arm.com
Signed-off-by: Arnaldo Carvalho de Melo