linux-kernel - Re: [PATCHv3] tools build: Make fixdep parsing wait for last target

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Date:   Thu, 1 Dec 2016 16:53:23 -0200
From:   Arnaldo Carvalho de Melo <acme@...hat.com>
To:     Peter Foley <pefoley2@...oley.com>
Cc:     Jiri Olsa <jolsa@...hat.com>, LKML <linux-kernel@...r.kernel.org>,
        wangnan0@...wei.com
Subject: Re: [PATCHv3] tools build: Make fixdep parsing wait for last target

Em Thu, Dec 01, 2016 at 09:48:40AM -0800, Peter Foley escreveu:
> On Thu, Dec 1, 2016 at 5:00 AM, Jiri Olsa <jolsa@...hat.com> wrote:
> > ok, so v3 actually ;-)
> >
> > the v2 was tricky for the case when fixdep is not available,
> > so I decided to go with Peter's fix and fixing 'fixdep' tool
> > to properly parse out the target in case we hit the ccache
> > error.. we need to be able to do it anyway
> >
> > please apply this patch before Peter's so we keep clean bisect
> >
> > thanks,
> > jirka

Doesn't work with ccache installed, but then after reinstalling ccache to check
its version, I can't reproduce it anymore, go figure :-\

Can you guys please take a look at tmp.perf/fixdep in my tree and check that
the last two patches are the ones that should go upstream and that you are able
to build it _with_ ccache installed?

Thanks,

- Arnaldo

Checking ccache version _after_ reinstalling it.
[acme@...et linux]$  rpm -q ccache
ccache-3.3.3-1.fc25.x86_64

Before removing ccache:

[acme@...et linux]$ git log --oneline -2
53c0b5e56b0e Fix objtool with clang
b73bc98b88db tools build: Make fixdep parsing wait for last target
[acme@...et linux]$ 

[acme@...et linux]$ m
make: Entering directory '/home/acme/git/linux/tools/perf'
  BUILD:   Doing 'make -j4' parallel build
  CC       /tmp/build/perf/jvmti/libjvmti.o
  CC       /tmp/build/perf/jvmti/jvmti_agent.o
  HOSTCC   /tmp/build/perf/pmu-events/json.o
  HOSTCC   /tmp/build/perf/fixdep.o
  HOSTCC   /tmp/build/perf/pmu-events/jsmn.o
  HOSTLD   /tmp/build/perf/fixdep-in.o
  LINK     /tmp/build/perf/fixdep
/bin/sh: /tmp/build/perf//fixdep: Permission denied
/home/acme/git/linux/tools/build/Makefile.build:91: recipe for target '/tmp/build/perf/pmu-events/jsmn.o' failed
make[2]: *** [/tmp/build/perf/pmu-events/jsmn.o] Error 1
Makefile.perf:469: recipe for target '/tmp/build/perf/pmu-events/jevents-in.o' failed
make[1]: *** [/tmp/build/perf/pmu-events/jevents-in.o] Error 2
make[1]: *** Waiting for unfinished jobs....
  LD       /tmp/build/perf/jvmti/jvmti-in.o
Makefile:108: recipe for target 'install-bin' failed
make: *** [install-bin] Error 2
make: Leaving directory '/home/acme/git/linux/tools/perf'

 Performance counter stats for 'make -k O=/tmp/build/perf -C tools/perf install-bin':

     7,842,062,842      cycles:u                                                    
    10,358,806,498      instructions:u            #    1.32  insn per cycle         

       2.698261783 seconds time elapsed

[acme@...et linux]$

Even if I try removing the build directory it fails:

[acme@...et linux]$ rm -rf /tmp/build/perf/ ; mkdir -p /tmp/build/perf ; make -k O=/tmp/build/perf -C tools/perf install-bin
make: Entering directory '/home/acme/git/linux/tools/perf'
  BUILD:   Doing 'make -j4' parallel build

Auto-detecting system features:
...                         dwarf: [ on  ]
...            dwarf_getlocations: [ on  ]
...                         glibc: [ on  ]
...                          gtk2: [ on  ]
...                      libaudit: [ on  ]
...                        libbfd: [ on  ]
...                        libelf: [ on  ]
...                       libnuma: [ on  ]
...        numa_num_possible_cpus: [ on  ]
...                       libperl: [ on  ]
...                     libpython: [ on  ]
...                      libslang: [ on  ]
...                     libcrypto: [ on  ]
...                     libunwind: [ on  ]
...            libdw-dwarf-unwind: [ on  ]
...                          zlib: [ on  ]
...                          lzma: [ on  ]
...                     get_cpuid: [ on  ]
...                           bpf: [ on  ]

  GEN      /tmp/build/perf/common-cmds.h
  HOSTCC   /tmp/build/perf/fixdep.o
  HOSTLD   /tmp/build/perf/fixdep-in.o
  LINK     /tmp/build/perf/fixdep
  MKDIR    /tmp/build/perf/pmu-events/
  HOSTCC   /tmp/build/perf/pmu-events/json.o
/bin/sh: /tmp/build/perf//fixdep: Permission denied
/home/acme/git/linux/tools/build/Makefile.build:91: recipe for target '/tmp/build/perf/pmu-events/json.o' failed
make[2]: *** [/tmp/build/perf/pmu-events/json.o] Error 1
Makefile.perf:469: recipe for target '/tmp/build/perf/pmu-events/jevents-in.o' failed
make[1]: *** [/tmp/build/perf/pmu-events/jevents-in.o] Error 2
make[1]: *** Waiting for unfinished jobs....
  PERF_VERSION = 4.9.rc6.g628b2a
make[1]: *** wait: No child processes.  Stop.
Makefile:108: recipe for target 'install-bin' failed
make: *** [install-bin] Error 2
make: Leaving directory '/home/acme/git/linux/tools/perf'
[acme@...et linux]$