[PATCH 0/4] perf arm_spe: Dump IMPDEF events

[James Clark]

On 06/04/2026 7:18 pm, Namhyung Kim wrote:
> Hi James,
> 
> On Wed, Apr 01, 2026 at 03:25:48PM +0100, James Clark wrote:
>> In the Arm SPE raw data dump, IMPDEF events aren't printed. Add the
>> ability to add names for some known events or print the raw event number
>> for unknown events.
>>
>> For example:
>>
>>    $ perf report -D
>>
>>    ... ARM SPE data: size 0xd000 bytes
>>    00000000: b0 18 c6 32 80 00 80 ff a0  PC 0xff80008032c618 el1 ns=1
>>    00000009: 64 e7 42 00 00              CONTEXT 0x42e7 el1
>>    0000000e: 00 00 00 00 00              PAD
>>    00000013: 49 00                       LD GP-REG
>>    00000015: 52 16 10               	EV RETIRED L1D-ACCESS TLB-ACCESS
>>
>> On N1 the event line becomes:
>>
>>    00000015: 52 16 10                    EV RETIRED L1D-ACCESS TLB-ACCESS LATE-PREFETCH
>>
>> Or on other cores it becomes:
>>
>>    00000015: 52 16 10                    EV RETIRED L1D-ACCESS TLB-ACCESS IMPDEF:12
>>
>> Signed-off-by: James Clark <james.clark at linaro.org>
>> ---
>> James Clark (4):
>>        perf arm_spe: Make a function to get the MIDR
>>        perf arm_spe: Turn event name mappings into an array
>>        perf arm_spe: Decode Arm N1 IMPDEF events
>>        perf arm_spe: Print remaining IMPDEF event numbers
> 
> Will you send v2 or do you think it's ok to merge v1?
> 
> Thanks,
> Namhyung
> 

I'll send a v2, thanks.

>>
>>   tools/perf/util/arm-spe-decoder/Build              |   2 +
>>   .../util/arm-spe-decoder/arm-spe-pkt-decoder.c     | 147 ++++++++++++++-------
>>   .../util/arm-spe-decoder/arm-spe-pkt-decoder.h     |   5 +-
>>   tools/perf/util/arm-spe.c                          |  49 ++++---
>>   4 files changed, 135 insertions(+), 68 deletions(-)
>> ---
>> base-commit: 74e2dbe7be5037a5e5eed6bc1ad562747ac88566
>> change-id: 20260331-james-spe-impdef-decode-d944f4fdcff7
>>
>> Best regards,
>> -- 
>> James Clark <james.clark at linaro.org>
>>