linux-toradex.git/tools/perf/util/arm-spe-decoder, branch master

perf arm_spe: Print remaining IMPDEF event numbers

2026-05-06T01:04:28+00:00

Any IMPDEF events not printed out from a known core's IMPDEF list or for
a completely unknown core will still not be shown to the user. Fix this
by printing the remaining bits as comma separated raw numbers, e.g.
"IMPDEF:1,2,3,4".

Suggested-by: Al Grant 
Reviewed-by: Leo Yan 
Signed-off-by: James Clark 
Cc: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Ian Rogers 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: John Garry 
Cc: Leo Yan 
Cc: Mark Rutland 
Cc: Mike Leach 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Will Deacon 
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Arnaldo Carvalho de Melo

perf arm_spe: Decode Arm N1 IMPDEF events

2026-05-06T01:03:42+00:00

>From the TRM [1], N1 has one IMPDEF event which isn't covered by the
common list. Add a framework so that more cores can be added in the
future and that the N1 IMPDEF event can be decoded. Also increase the
size of the buffer because we're adding more strings and if it gets
truncated it falls back to a hex dump only.

[1]: https://developer.arm.com/documentation/100616/0401/Statistical-Profiling-Extension/implementation-defined-features-of-SPE

Suggested-by: Al Grant 
Reviewed-by: Leo Yan 
Signed-off-by: James Clark 
Cc: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Ian Rogers 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: John Garry 
Cc: Leo Yan 
Cc: Mark Rutland 
Cc: Mike Leach 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Will Deacon 
Cc: linux-arm-kernel@lists.infradead.org
Link: https://developer.arm.com/documentation/100616/0401/Statistical-Profiling-Extension/implementation-defined-features-of-SPE
Signed-off-by: Arnaldo Carvalho de Melo

perf arm_spe: Turn event name mappings into an array

2026-05-06T01:03:27+00:00

This is so we can have a single function that prints events and can be
used with multiple mappings from different CPUs. Remove any bit that was
printed so that later we can print out the remaining unknown impdef
bits.

No functional changes intended.

Reviewed-by: Leo Yan 
Signed-off-by: James Clark 
Cc: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Ian Rogers 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: John Garry 
Cc: Leo Yan 
Cc: Mark Rutland 
Cc: Mike Leach 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Will Deacon 
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Arnaldo Carvalho de Melo

perf arm_spe: Store MIDR in arm_spe_pkt

2026-05-06T01:03:16+00:00

The MIDR will affect printing of arm_spe_pkts, so store a copy of it
there. Technically it's constant for each decoder, but there is no
decoder when doing a raw dump, so it has to be stored in every packet.
It will only be used in raw dump mode and not in normal decoding for
now, but to avoid any surprises, set MIDR properly on the decoder too.

Having both the MIDR and the arm_spe_pkt (which has a copy of it) in the
decoder seemed a bit weird, so remove arm_spe_pkt from the decoder. The
packet is only short lived anyway so probably shouldn't have been there
in the first place.

Reviewed-by: Leo Yan 
Signed-off-by: James Clark 
Cc: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Ian Rogers 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: John Garry 
Cc: Leo Yan 
Cc: Mark Rutland 
Cc: Mike Leach 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Will Deacon 
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Arnaldo Carvalho de Melo

perf arm_spe: Expose SIMD information in other operations

2025-11-19T04:31:30+00:00

The other operations contain SME data processing, ASE (Advanced SIMD)
and floating-point operations. Expose these info in the records.

Signed-off-by: Leo Yan 
Reviewed-by: Ian Rogers 
Reviewed-by: James Clark 
Signed-off-by: Namhyung Kim

perf arm_spe: Report GCS in record

2025-11-19T04:31:30+00:00

Report GCS related info in records.

Signed-off-by: Leo Yan 
Reviewed-by: Ian Rogers 
Reviewed-by: James Clark 
Signed-off-by: Namhyung Kim

perf arm_spe: Report memset and memcpy in records

2025-11-19T04:31:30+00:00

Expose memset and memcpy related info in records.

Signed-off-by: Leo Yan 
Reviewed-by: Ian Rogers 
Reviewed-by: James Clark 
Signed-off-by: Namhyung Kim

perf arm_spe: Report associated info for SVE / SME operations

2025-11-19T04:31:29+00:00

SVE / SME operations can be predicated or Gather load / scatter store,
save the relevant info into record.

Signed-off-by: Leo Yan 
Reviewed-by: Ian Rogers 
Reviewed-by: James Clark 
Signed-off-by: Namhyung Kim

perf arm_spe: Report extended memory operations in records

2025-11-19T04:31:29+00:00

Extended memory operations include atomic (AT), acquire/release (AR),
and exclusive (EXCL) operations. Save the relevant information
in the records.

Signed-off-by: Leo Yan 
Reviewed-by: Ian Rogers 
Reviewed-by: James Clark 
Signed-off-by: Namhyung Kim

perf arm_spe: Report MTE allocation tag in record

2025-11-19T04:31:29+00:00

Save MTE tag info in memory record.

Signed-off-by: Leo Yan 
Reviewed-by: Ian Rogers 
Reviewed-by: James Clark 
Signed-off-by: Namhyung Kim