linux-kernel - Re: [PATCH v2 1/1] perf test arm64: Test unwinding using fame-pointer (fp) mode

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Message-ID: <5ccb6f06-374e-ff02-b062-0479f306f232@arm.com>
Date:   Wed, 16 Mar 2022 17:38:18 +0000
From:   German Gomez <german.gomez@....com>
To:     James Clark <james.clark@....com>, linux-kernel@...r.kernel.org
Cc:     mark.rutland@....com, namhyung@...nel.org, leo.yan@...aro.org,
        Alexandre.Truong@....com, Jiri Olsa <jolsa@...nel.org>,
        acme@...nel.org, linux-perf-users@...r.kernel.org
Subject: Re: [PATCH v2 1/1] perf test arm64: Test unwinding using fame-pointer
 (fp) mode


On 16/03/2022 17:30, James Clark wrote:
>
> On 16/03/2022 17:20, German Gomez wrote:
>> Add a shell script to check that the call-graphs generated using frame
>> pointers (--call-graph fp) are complete and not missing leaf functions:
>>
>>   | $ perf test 88 -v
>>   |  88: Check Arm64 callgraphs are complete in fp mode                  :
>>   | --- start ---
>>   | test child forked, pid 8734
>>   |  + Compiling test program (/tmp/test_program.Cz3yL)...
>>   |  + Recording (PID=8749)...
>>   |  + Stopping perf-record...
>>   | test_program.Cz
>>   |                  728 leaf
>>   |                  753 parent
>>   |                  76c main
>>   | test child finished with 0
>>   | ---- end ----
>>   | Check Arm SPE callgraphs are complete in fp mode: Ok
>>
> Ran it on N1SDP and it passes, and it fails if b9f6fbb3b2c2 isn't applied.
>
> Reviewed-by: James Clark <james.clark@....com>

Thanks!