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Message-ID: <CA+5PVA5vMyNmQYCLX315Jc+kN9zQuZo_h0Devpjfr43TezE-qA@mail.gmail.com>
Date:	Mon, 12 Nov 2012 15:23:51 -0500
From:	Josh Boyer <jwboyer@...il.com>
To:	David Howells <dhowells@...hat.com>
Cc:	acme@...stprotocols.net, mingo@...nel.org, tglx@...utronix.de,
	bp@...en8.de, namhyung@...il.com, torvalds@...ux-foundation.org,
	paulus@...ba.org, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [GIT PULL] UAPI: perf fixes

On Thu, Nov 8, 2012 at 7:51 AM, David Howells <dhowells@...hat.com> wrote:
>
>  (6) Make perf work for x86 by adding -I flags and changing long #includes
>      with "../../include" in them into short <asm/foo.h> type things.

This patch seems to break building perf on ppc64.  It fails with:

+ make -j16 -C tools/perf -s V=1 WERROR=0 HAVE_CPLUS_DEMANGLE=1 prefix=/usr all

<snip>

builtin-kvm.c:25:21: fatal error: asm/svm.h: No such file or directory
compilation terminated.
make: *** [builtin-kvm.o] Error 1
make: *** Waiting for unfinished jobs....

And that is indeed because arch/powerpc/include/asm/svm.h doesn't exist
(and therefore can't be exported like the first patch for x86 in this
series does).  You can find full build logs with this patch series
applied here: http://ppc.koji.fedoraproject.org/koji/taskinfo?taskID=781782

However, without some form of fix for the ../.. includes, perf still
fails to build on arches like ARM and powerpc with errors like this:

In file included from util/../perf.h:29:0,
                 from util/cache.h:7,
                 from util/quote.c:1:
util/../../../arch/powerpc/include/asm/unistd.h:12:29: fatal error:
uapi/asm/unistd.h: No such file or directory
compilation terminated.
make: *** [util/parse-events-test.o] Error 1

Full build logs here:
http://ppc.koji.fedoraproject.org/koji/taskinfo?taskID=781076

So.  Something else might need to be done to fix perf builds for non-x86
arches.

josh
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