linux-kernel - Re: [PATCH] perf test: Skip test 68 for Powerpc

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Date:   Mon, 7 Dec 2020 13:35:24 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
Cc:     Kajol Jain <kjain@...ux.ibm.com>, jolsa@...hat.com,
        namhyung@...nel.org, linux-perf-users@...r.kernel.org,
        linux-kernel@...r.kernel.org, irogers@...gle.com,
        tmricht@...ux.ibm.com, rbernon@...eweavers.com,
        maddy@...ux.ibm.com, atrajeev@...ux.vnet.ibm.com
Subject: Re: [PATCH] perf test: Skip test 68 for Powerpc

Em Tue, Nov 24, 2020 at 03:04:53PM +0530, Ravi Bangoria escreveu:
> 
> 
> On 11/19/20 7:20 PM, Kajol Jain wrote:
> > Commit ed21d6d7c48e6e ("perf tests: Add test for PE binary format support")
> > adds a WINDOWS EXE file named tests/pe-file.exe, which is
> > examined by the test case 'PE file support'. As powerpc doesn't support
> > it, we are skipping this test.
> > 
> > Result in power9 platform before this patach:
> > [command]# ./perf test -F 68
> > 68: PE file support                               : Failed!
> > 
> > Result in power9 platform after this patch:
> > [command]# ./perf test -F 68
> > 68: PE file support                               : Skip
> > 
> > Signed-off-by: Kajol Jain <kjain@...ux.ibm.com>
> 
> Reviewed-by: Ravi Bangoria <ravi.bangoria@...ux.ibm.com>

But why is it failing? I.e. what is that

 perf test -v -F 68

outputs?

Using 'perf report' on a perf.data file containing samples in such
binaries, collected on x86 should work on whatever workstation a
developer uses.

Say, on a MacBook aarch64 one can look at a perf.data file collected on
a x86_64 system where Wine running a PE binary was present.

- Arnaldo