linux-stable.git/tools/perf/util/arm-spe-decoder, branch linux-6.3.y

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

perf tools: Use __BYTE_ORDER__

2021-11-07T15:27:38+00:00

Switch from the libc-defined __BYTE_ORDER to the compiler-defined
__BYTE_ORDER__ in order to make endianness detection more robust, like
it was done for libbpf.

Signed-off-by: Ilya Leoshkevich 
Suggested-by: Arnaldo Carvalho de Melo 
Cc: Heiko Carstens 
Cc: Thomas Richter 
Cc: Vasily Gorbik 
Link: https://lore.kernel.org/r/20211104132311.984703-1-iii@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Avoid potential buffer overrun

2021-04-07T19:23:20+00:00

SPE extended headers are > 1 byte so ensure the buffer contains at least
this before reading. This issue was detected by fuzzing.

Signed-off-by: Ian Rogers 
Cc: Alexander Shishkin 
Cc: Andre Przywara 
Cc: Dave Martin 
Cc: Jiri Olsa 
Cc: Leo Yan 
Cc: Mark Rutland 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Cc: Will Deacon 
Link: http://lore.kernel.org/lkml/20210407153955.317215-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Store operation type in packet

2021-02-12T20:43:24+00:00

This patch is to store operation type in packet structure.

Signed-off-by: Leo Yan 
Reviewed-by: James Clark 
Tested-by: James Clark 
Cc: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Al Grant 
Cc: Andre Przywara 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: John Garry 
Cc: Mark Rutland 
Cc: Mathieu Poirier 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Wei Li 
Cc: Will Deacon 
Signed-off-by: James Clark 
Link: https://lore.kernel.org/r/20210211133856.2137-3-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Store memory address in packet

2021-02-12T20:43:21+00:00

This patch is to store virtual and physical memory addresses in packet,
which will be used for memory samples.

Signed-off-by: Leo Yan 
Reviewed-by: James Clark 
Tested-by: James Clark 
Cc: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Al Grant 
Cc: Andre Przywara 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: John Garry 
Cc: Mark Rutland 
Cc: Mathieu Poirier 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Wei Li 
Cc: Will Deacon 
Link: https://lore.kernel.org/r/20210211133856.2137-2-james.clark@arm.com
Signed-off-by: James Clark 
Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Add support for ARMv8.3-SPE

2020-11-26T12:31:46+00:00

This patch is to support Armv8.3 extension for SPE, it adds alignment
field in the Events packet and it supports the Scalable Vector Extension
(SVE) for Operation packet and Events packet with two additions:

  - The vector length for SVE operations in the Operation Type packet;
  - The incomplete predicate and empty predicate fields in the Events
    packet.

Signed-off-by: Wei Li 
Signed-off-by: Leo Yan 
Reviewed-by: Andre Przywara 
Acked-by: Will Deacon 
Cc: Alexander Shishkin 
Cc: Al Grant 
Cc: Arnaldo Carvalho de Melo 
Cc: Dave Martin 
Cc: Ingo Molnar 
Cc: James Clark 
Cc: Jiri Olsa 
Cc: John Garry 
Cc: Mark Rutland 
Cc: Mathieu Poirier 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: https://lore.kernel.org/r/20201119152441.6972-17-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo