linux-kernel - Re: [PATCHv3 0/5] perf, tool: Fix endian issues

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Date:	Thu, 10 May 2012 18:30:33 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	David Ahern <dsahern@...il.com>
Cc:	acme@...hat.com, a.p.zijlstra@...llo.nl, mingo@...e.hu,
	paulus@...ba.org, cjashfor@...ux.vnet.ibm.com, fweisbec@...il.com,
	linux-kernel@...r.kernel.org, Caspar Zhang <czhang@...hat.com>
Subject: Re: [PATCHv3 0/5] perf, tool: Fix endian issues

On Thu, May 10, 2012 at 12:38:25PM +0200, Jiri Olsa wrote:
> On Mon, May 07, 2012 at 09:49:17PM -0600, David Ahern wrote:
> > On 5/7/12 5:29 AM, Jiri Olsa wrote:
> > >Tested by running following usecase:
> > >   - origin system:
> > >     # perf record -a -- sleep 10 (any perf record will do)
> > >     # perf report>  report.origin
> > >     # perf archive perf.data
> > >
> > >   - copy the perf.data, report.origin and perf.data.tar.bz2
> > >     to a target system and run:
> > >     # tar xjvf perf.data.tar.bz2 -C ~/.debug
> > >     # perf report>  report.target
> > >     # diff -u report.origin report.target
> > >
> > >   - the diff should produce no output
> > >     (besides some white space stuff and possibly different
> > >      date/TZ output)
> > >
> > >Tested by above usecase cross following architectures:
> > >   i386, x86_64, s390x, ppc64
> > 
> > Short answer: Now that I have perf compiling in a 32-bit PPC VM,
> > applied the patchset and rebuilding -- it does not work for me.
> 
> hi,
> Could I ask what VM did you use? My qemu setup does not seem
> to offer this one.
> 
> so it's [32 bits big endian] into [64 bits small endian]
> 
> I tested i386 to ppc64. The endianity is the other way round,
> I wonder whats wrong with your tested direction.
> 
> hunting testing machine ;)

reproduced ;) working on fix

jirka
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