linux-kernel - Re: [PATCH v4] perf: bpf: Fix build breakage due to libbpf

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Message-ID: <20160107203957.GG18457@kernel.org>
Date:	Thu, 7 Jan 2016 17:39:57 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	"Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
Cc:	"Wangnan (F)" <wangnan0@...wei.com>, jolsa@...hat.com,
	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	sukadev@...ux.vnet.ibm.com
Subject: Re: [PATCH v4] perf: bpf: Fix build breakage due to libbpf

Em Thu, Jan 07, 2016 at 12:28:15PM +0530, Naveen N. Rao escreveu:
> On 2015/12/17 09:19AM, Arnaldo Carvalho de Melo wrote:
> > Em Thu, Dec 17, 2015 at 10:37:14AM +0530, Naveen N. Rao escreveu:
> > > On 2015/12/17 09:29AM, Wang Nan wrote:
> > > > The whole thread is:
> > > > 
> > > > [PATCH v3 0/3] perf build: PowerPC: Fix build breakage due to libbpf:
> > > > http://lkml.kernel.org/g/1450150557-127942-1-git-send-email-wangnan0@huawei.com
> > > > 
> > > > [PATCH v3 1/3] perf tools: Fix PowerPC native building
> > > > http://lkml.kernel.org/g/1450150557-127942-2-git-send-email-wangnan0@huawei.com
> > > > 
> > > > [PATCH v3 2/3] tools: Move Makefile.arch from perf/config to tools/scripts
> > > > http://lkml.kernel.org/g/1450150557-127942-3-git-send-email-wangnan0@huawei.com
> > > > 
> > > > [PATCH v3 3/3] perf: bpf: Fix build breakage due to libbpf
> > > > http://lkml.kernel.org/g/1450150557-127942-4-git-send-email-wangnan0@huawei.com
> > > > 
> > > > and [PATCH v3 3/3] breaks local building because the usage of "srctree", and
> > 	     ^^
> > > You mean v4 here.
> > 
> > > Anyway, now that you've sent v4, it should be much clearer.
> > 
> > Right, I should've read it more thoroughly, but anyway, I'll process it
> > today.
> 
> Bump.
> 
> Arnaldo,
> Can you please push at least the initial 3 patches of this for v4.4?  
> Wang Nan has posted v6 here:
> http://thread.gmane.org/gmane.linux.kernel/2110626

So I tried it again today, from the v6, the latest patch with that
subject line in my inbox, and I get this, after applying the first three
patches:

[acme@zoo linux]$ make -C tools clean > /dev/null
[acme@zoo linux]$ make -C tools/perf build-test
make: Entering directory '/home/git/linux/tools/perf'
Testing Makefile
tests/make:15: /scripts/Makefile.arch: No such file or directory
make[2]: *** No rule to make target '/scripts/Makefile.arch'.  Stop.
tests/make:5: recipe for target 'all' failed
make[1]: *** [all] Error 2
Makefile:81: recipe for target 'build-test' failed
make: *** [build-test] Error 2
make: Leaving directory '/home/git/linux/tools/perf'
[acme@zoo linux]$

[acme@zoo linux]$ git log --oneline | head -10
a1f721fa8b82 perf bpf: Fix build breakage due to libbpf
41020638ceb2 tools: Move Makefile.arch from perf/config to tools/scripts
abf316e348da perf tools: Fix PowerPC native building
12ca6ad2e3a8 perf: Fix race in swevent hash
c12744994465 perf: Fix race in perf_event_exec()
2d2e7ac14a1f Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
fb202539e61b perf list: Robustify event printing routine
d643b5aba848 perf list: Add support for PERF_COUNT_SW_BPF_OUT
03fba21adb19 Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
4938cf0c7a62 perf hists browser: Fix segfault if use symbol filter in cmdline
[acme@zoo linux]$

Trying to figure this out...

- Arnaldo