[GIT PULL 0/1] perf/urgent fix

[GIT PULL 0/1] perf/urgent fix

[Arnaldo Carvalho de Melo]

Hi Ingo,

	Please consider pulling,

- Arnaldo

The following changes since commit a49ac9f83b31e41c8311d64bd2b3f97a23dcb38d:

  perf/x86: Move events_sysfs_show() outside CPU_SUP_INTEL (2016-03-25 09:46:53 +0100)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-urgent-for-mingo-20160328

for you to fetch changes up to 379649cfeafef29b77d29860741f4d1c5870b65f:

  perf tools: Fix build break on powerpc (2016-03-28 17:46:20 -0300)

----------------------------------------------------------------
perf/urgent fix:

- Fix build break on powerpc due to missing headers with prototypes for
  functions defined in tools/perf/arch/powerpc/util/header.c (Sukadev Bhattiprolu)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

----------------------------------------------------------------
Sukadev Bhattiprolu (1):
      perf tools: Fix build break on powerpc

 tools/perf/arch/powerpc/util/header.c | 2 ++
 1 file changed, 2 insertions(+)

[PATCH 1/1] perf tools: Fix build break on powerpc

[Arnaldo Carvalho de Melo]

From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>

Commit 531d2410635c ("perf tools: Do not include stringify.h from the
kernel sources") seems to have accidentially removed the inclusion of
"util/header.h" from "arch/powerpc/util/header.c".

"util/header.h" provides the prototype for get_cpuid() and is needed to
build perf on Powerpc:

	arch/powerpc/util/header.c:17:1: error: no previous prototype for 'get_cpuid' [-Werror=missing-prototypes]

Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 531d2410635c ("perf tools: Do not include stringify.h from the kernel sources")
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
[ Included "util.h" too, to get the scnprintf() prototype ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/arch/powerpc/util/header.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c
index 6138bdef6e63..f8ccee132867 100644
--- a/tools/perf/arch/powerpc/util/header.c
+++ b/tools/perf/arch/powerpc/util/header.c
@@ -4,6 +4,8 @@
 #include <stdlib.h>
 #include <string.h>
 #include <linux/stringify.h>
+#include "header.h"
+#include "util.h"
 
 #define mfspr(rn)       ({unsigned long rval; \
 			 asm volatile("mfspr %0," __stringify(rn) \
-- 
2.5.5

Re: [PATCH 1/1] perf tools: Fix build break on powerpc

[Stephen Rothwell]

Hi Arnaldo,

On Mon, 28 Mar 2016 17:52:34 -0300 Arnaldo Carvalho de Melo <acme@kernel.org> wrote:
>
> From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
> 
> Commit 531d2410635c ("perf tools: Do not include stringify.h from the
> kernel sources") seems to have accidentially removed the inclusion of
> "util/header.h" from "arch/powerpc/util/header.c".
> 
> "util/header.h" provides the prototype for get_cpuid() and is needed to
> build perf on Powerpc:
> 
> 	arch/powerpc/util/header.c:17:1: error: no previous prototype for 'get_cpuid' [-Werror=missing-prototypes]
> 
> Reported-by: Michael Ellerman <mpe@ellerman.id.au>
> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> Cc: Stephen Rothwell <sfr@canb.auug.org.au>
> Fixes: 531d2410635c ("perf tools: Do not include stringify.h from the kernel sources")
> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
> [ Included "util.h" too, to get the scnprintf() prototype ]
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> ---
>  tools/perf/arch/powerpc/util/header.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c
> index 6138bdef6e63..f8ccee132867 100644
> --- a/tools/perf/arch/powerpc/util/header.c
> +++ b/tools/perf/arch/powerpc/util/header.c
> @@ -4,6 +4,8 @@
>  #include <stdlib.h>
>  #include <string.h>
>  #include <linux/stringify.h>
> +#include "header.h"
> +#include "util.h"
>  
>  #define mfspr(rn)       ({unsigned long rval; \
>  			 asm volatile("mfspr %0," __stringify(rn) \
> -- 
> 2.5.5

Thanks, I will put that in my "fixes" tree until it gets accepted
upstream.

-- 
Cheers,
Stephen Rothwell

Re: [GIT PULL 0/1] perf/urgent fix

[Ingo Molnar]

* Arnaldo Carvalho de Melo <acme@kernel.org> wrote:

> Hi Ingo,
> 
> 	Please consider pulling,
> 
> - Arnaldo
> 
> The following changes since commit a49ac9f83b31e41c8311d64bd2b3f97a23dcb38d:
> 
>   perf/x86: Move events_sysfs_show() outside CPU_SUP_INTEL (2016-03-25 09:46:53 +0100)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-urgent-for-mingo-20160328
> 
> for you to fetch changes up to 379649cfeafef29b77d29860741f4d1c5870b65f:
> 
>   perf tools: Fix build break on powerpc (2016-03-28 17:46:20 -0300)
> 
> ----------------------------------------------------------------
> perf/urgent fix:
> 
> - Fix build break on powerpc due to missing headers with prototypes for
>   functions defined in tools/perf/arch/powerpc/util/header.c (Sukadev Bhattiprolu)
> 
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> 
> ----------------------------------------------------------------
> Sukadev Bhattiprolu (1):
>       perf tools: Fix build break on powerpc
> 
>  tools/perf/arch/powerpc/util/header.c | 2 ++
>  1 file changed, 2 insertions(+)

Pulled, thanks a lot Arnaldo!

	Ingo

Re: [PATCH 1/1] perf tools: Fix build break on powerpc

[Arnaldo Carvalho de Melo]

Em Mon, Mar 28, 2016 at 10:21:45AM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Mon, Mar 28, 2016 at 09:35:31AM -0300, Arnaldo Carvalho de Melo escreveu:
> > Em Sun, Mar 27, 2016 at 01:19:03PM +0200, Jiri Olsa escreveu:
> > > On Sat, Mar 26, 2016 at 11:01:47AM -0700, Sukadev Bhattiprolu wrote:
> > > > +++ b/tools/perf/arch/powerpc/util/header.c
> > > > @@ -4,6 +4,7 @@
> > > >  #include <stdlib.h>
> > > >  #include <string.h>
> > > >  #include <linux/stringify.h>
> > > > +#include "../../util/header.h"
> > > 
> > > you could use just "header.h" right?
> > 
> > Like this? I'm trying to find a way to do ppc cross builds, one more
> > thing to have in the build-tests...
> 
> Argh, only kernel x-builds are supported on Fedora, checking if this is
> the case with Debian, if this is supported there, one more Docker image
> for building perf :-)
> 
> [acme@jouet linux]$ make ARCH=ppc64 CROSS_COMPILE=ppc64-linux-gnu-
> O=/tmp/build/perf-ppc64/ -C tools/perf install-bin
> make: Entering directory '/home/acme/git/linux/tools/perf'
>   BUILD:   Doing 'make -j4' parallel build

Ok, couldn't quickly find it on Debian, but found it for ppc64el on
Ubuntu, this way I can reproduce the problem:

root@df2c38ce15fe:/git/linux# make ARCH=ppc64el CROSS_COMPILE=powerpc64le-linux-gnu- -C tools/perf O=/tmp/build/perf install-bin
make: Entering directory `/git/linux/tools/perf'
  BUILD:   Doing 'make -j4' parallel build

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

config/Makefile:246: No libelf found, disables 'probe' tool and BPF support in 'perf record', please install elfutils-libelf-devel/libelf-dev
config/Makefile:364: Disabling post unwind, no support found.
config/Makefile:405: No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev
config/Makefile:416: No libcrypto.h found, disables jitted code injection, please install libssl-devel or libssl-dev
config/Makefile:431: slang not found, disables TUI support. Please install slang-devel or libslang-dev
config/Makefile:445: GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev
config/Makefile:473: Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev
config/Makefile:516: No 'Python.h' (for Python 2.x support) was found: disables Python support - please install python-devel/python-dev
config/Makefile:606: No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev
config/Makefile:619: No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev
config/Makefile:676: Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc
  CC       /tmp/build/perf/arch/powerpc/util/header.o
arch/powerpc/util/header.c:18:1: error: no previous prototype for 'get_cpuid' [-Werror=missing-prototypes]
 get_cpuid(char *buffer, size_t sz)
 ^
arch/powerpc/util/header.c: In function 'get_cpuid':
arch/powerpc/util/header.c:25:2: error: implicit declaration of function 'scnprintf' [-Werror=implicit-function-declaration]
  nb = scnprintf(buffer, sz, "%lu,%lu$", PVR_VER(pvr), PVR_REV(pvr));
  ^
arch/powerpc/util/header.c:25:2: error: nested extern declaration of 'scnprintf' [-Werror=nested-externs]
cc1: all warnings being treated as errors
  INSTALL  binaries
  INSTALL  tests
  INSTALL  libexec
  INSTALL  perf-archive
  INSTALL  perf-with-kcore
  INSTALL  perf_completion-script
  INSTALL  perf-tip
make: Leaving directory `/git/linux/tools/perf'
root@df2c38ce15fe:/git/linux#

----------------------------------------------------------------
And test the fix:
----------------------------------------------------------------

root@df2c38ce15fe:/git/linux# make ARCH=ppc64el CROSS_COMPILE=powerpc64le-linux-gnu- -C tools/perf O=/tmp/build/perf install-bin
make: Entering directory `/git/linux/tools/perf'
  BUILD:   Doing 'make -j4' parallel build

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

config/Makefile:246: No libelf found, disables 'probe' tool and BPF support in 'perf record', please install elfutils-libelf-devel/libelf-dev
config/Makefile:364: Disabling post unwind, no support found.
config/Makefile:405: No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev
config/Makefile:416: No libcrypto.h found, disables jitted code injection, please install libssl-devel or libssl-dev
config/Makefile:431: slang not found, disables TUI support. Please install slang-devel or libslang-dev
config/Makefile:445: GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev
config/Makefile:473: Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev
config/Makefile:516: No 'Python.h' (for Python 2.x support) was found: disables Python support - please install python-devel/python-dev
config/Makefile:606: No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev
config/Makefile:619: No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev
config/Makefile:676: Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc
  CC       /tmp/build/perf/arch/powerpc/util/header.o
  LD       /tmp/build/perf/arch/powerpc/util/libperf-in.o
  LD       /tmp/build/perf/arch/powerpc/libperf-in.o
  LD       /tmp/build/perf/arch/libperf-in.o
  LD       /tmp/build/perf/libperf-in.o
  AR       /tmp/build/perf/libperf.a
  LINK     /tmp/build/perf/perf
  INSTALL  binaries
  INSTALL  tests
  INSTALL  libexec
  INSTALL  perf-archive
  INSTALL  perf-with-kcore
  INSTALL  perf_completion-script
  INSTALL  perf-tip
make: Leaving directory `/git/linux/tools/perf'
root@df2c38ce15fe:/git/linux#

Adding this container to the set I run when testing perf csets, with this in
place we'll catch such bugs sooner in the future.

- Arnaldo

Re: [PATCH 1/1] perf tools: Fix build break on powerpc

[Arnaldo Carvalho de Melo]

Em Mon, Mar 28, 2016 at 09:35:31AM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Sun, Mar 27, 2016 at 01:19:03PM +0200, Jiri Olsa escreveu:
> > On Sat, Mar 26, 2016 at 11:01:47AM -0700, Sukadev Bhattiprolu wrote:
> > > From 502e8236082412db1d33abfad95aaf14b539502e Mon Sep 17 00:00:00 2001
> > > From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
> > > Date: Sat, 26 Mar 2016 17:31:39 -0400
> > > Subject: [PATCH 1/1] perf tools: Fix build break on powerpc
> > > MIME-Version: 1.0
> > > Content-Type: text/plain; charset=UTF-8
> > > Content-Transfer-Encoding: 8bit
> > > 
> > > 'Commit 531d2410635c ("perf tools: Do not include stringify.h from the
> > > kernel sources")' seems to have accidentially removed the inclusion of
> > > "util/header.h" from "arch/powerpc/util/header.c".
> > > 
> > > "util/header.h" provides the prototype for get_cpuid() and is needed to
> > > build perf on Powerpc.
> > > 
> > > 	arch/powerpc/util/header.c:17:1: error: no previous prototype for
> > > 	‘get_cpuid’ [-Werror=missing-prototypes]
> > > 
> > > Reported-by: Michael Ellerman <mpe@ellerman.id.au>
> > > Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
> > > ---
> > >  tools/perf/arch/powerpc/util/header.c | 1 +
> > >  1 file changed, 1 insertion(+)
> > > 
> > > diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c
> > > index 6138bde..5111e34 100644
> > > --- a/tools/perf/arch/powerpc/util/header.c
> > > +++ b/tools/perf/arch/powerpc/util/header.c
> > > @@ -4,6 +4,7 @@
> > >  #include <stdlib.h>
> > >  #include <string.h>
> > >  #include <linux/stringify.h>
> > > +#include "../../util/header.h"
> > 
> > you could use just "header.h" right?
> 
> Like this? I'm trying to find a way to do ppc cross builds, one more
> thing to have in the build-tests...

Argh, only kernel x-builds are supported on Fedora, checking if this is
the case with Debian, if this is supported there, one more Docker image
for building perf :-)

[acme@jouet linux]$ make ARCH=ppc64 CROSS_COMPILE=ppc64-linux-gnu-
O=/tmp/build/perf-ppc64/ -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: [ OFF ]
...                         glibc: [ OFF ]
...                          gtk2: [ OFF ]
...                      libaudit: [ OFF ]
...                        libbfd: [ OFF ]
...                        libelf: [ OFF ]
...                       libnuma: [ OFF ]
...        numa_num_possible_cpus: [ OFF ]
...                       libperl: [ OFF ]
...                     libpython: [ OFF ]
...                      libslang: [ OFF ]
...                     libcrypto: [ OFF ]
...                     libunwind: [ OFF ]
...            libdw-dwarf-unwind: [ OFF ]
...                          zlib: [ OFF ]
...                          lzma: [ OFF ]
...                     get_cpuid: [ OFF ]
...                           bpf: [ OFF ]

config/Makefile:258: *** No gnu/libc-version.h found, please install
glibc-dev[el].  Stop.
Makefile:108: recipe for target 'install-bin' failed
make: *** [install-bin] Error 2
make: Leaving directory '/home/acme/git/linux/tools/perf'
[acme@jouet linux]$ rpm -q --qf "%{description}\n"
gcc-powerpc64-linux-gnu 
Cross-build GNU C compiler.

Only building kernels is currently supported.  Support for
cross-building user space programs is not currently provided as that
would massively multiply the number of packages.
[acme@jouet linux]$

Re: [PATCH 1/1] perf tools: Fix build break on powerpc

[Arnaldo Carvalho de Melo]

Em Sun, Mar 27, 2016 at 01:19:03PM +0200, Jiri Olsa escreveu:
> On Sat, Mar 26, 2016 at 11:01:47AM -0700, Sukadev Bhattiprolu wrote:
> > From 502e8236082412db1d33abfad95aaf14b539502e Mon Sep 17 00:00:00 2001
> > From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
> > Date: Sat, 26 Mar 2016 17:31:39 -0400
> > Subject: [PATCH 1/1] perf tools: Fix build break on powerpc
> > MIME-Version: 1.0
> > Content-Type: text/plain; charset=UTF-8
> > Content-Transfer-Encoding: 8bit
> > 
> > 'Commit 531d2410635c ("perf tools: Do not include stringify.h from the
> > kernel sources")' seems to have accidentially removed the inclusion of
> > "util/header.h" from "arch/powerpc/util/header.c".
> > 
> > "util/header.h" provides the prototype for get_cpuid() and is needed to
> > build perf on Powerpc.
> > 
> > 	arch/powerpc/util/header.c:17:1: error: no previous prototype for
> > 	‘get_cpuid’ [-Werror=missing-prototypes]
> > 
> > Reported-by: Michael Ellerman <mpe@ellerman.id.au>
> > Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
> > ---
> >  tools/perf/arch/powerpc/util/header.c | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c
> > index 6138bde..5111e34 100644
> > --- a/tools/perf/arch/powerpc/util/header.c
> > +++ b/tools/perf/arch/powerpc/util/header.c
> > @@ -4,6 +4,7 @@
> >  #include <stdlib.h>
> >  #include <string.h>
> >  #include <linux/stringify.h>
> > +#include "../../util/header.h"
> 
> you could use just "header.h" right?

Like this? I'm trying to find a way to do ppc cross builds, one more
thing to have in the build-tests...

commit 150da025b7f135450ca833fb80d54d59f0ddf185
Author: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Date:   Mon Mar 28 09:31:41 2016 -0300

    perf tools: Fix build break on powerpc
    
    Commit 531d2410635c ("perf tools: Do not include stringify.h from the
    kernel sources") seems to have accidentially removed the inclusion of
    "util/header.h" from "arch/powerpc/util/header.c".
    
    "util/header.h" provides the prototype for get_cpuid() and is needed to
    build perf on Powerpc:
    
            arch/powerpc/util/header.c:17:1: error: no previous prototype for ‘get_cpuid’ [-Werror=missing-prototypes]
    
    Reported-by: Michael Ellerman <mpe@ellerman.id.au>
    Fixes: 531d2410635c ("perf tools: Do not include stringify.h from the kernel sources")
    Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c
index 6138bdef6e63..6de1a93241ae 100644
--- a/tools/perf/arch/powerpc/util/header.c
+++ b/tools/perf/arch/powerpc/util/header.c
@@ -4,6 +4,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <linux/stringify.h>
+#include "header.h"
 
 #define mfspr(rn)       ({unsigned long rval; \
 			 asm volatile("mfspr %0," __stringify(rn) \

Re: [PATCH 1/1] perf tools: Fix build break on powerpc

[Arnaldo Carvalho de Melo]

Em Sat, Mar 26, 2016 at 11:01:47AM -0700, Sukadev Bhattiprolu escreveu:
> From 502e8236082412db1d33abfad95aaf14b539502e Mon Sep 17 00:00:00 2001
> From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
> Date: Sat, 26 Mar 2016 17:31:39 -0400
> Subject: [PATCH 1/1] perf tools: Fix build break on powerpc
> MIME-Version: 1.0
> Content-Type: text/plain; charset=UTF-8
> Content-Transfer-Encoding: 8bit
> 
> 'Commit 531d2410635c ("perf tools: Do not include stringify.h from the
> kernel sources")' seems to have accidentially removed the inclusion of
> "util/header.h" from "arch/powerpc/util/header.c".

My bad, will push this via perf/urgent, after fixing what Jiri reported.
 
> "util/header.h" provides the prototype for get_cpuid() and is needed to
> build perf on Powerpc.
> 
> 	arch/powerpc/util/header.c:17:1: error: no previous prototype for
> 	‘get_cpuid’ [-Werror=missing-prototypes]
> 
> Reported-by: Michael Ellerman <mpe@ellerman.id.au>
> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
> ---
>  tools/perf/arch/powerpc/util/header.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c
> index 6138bde..5111e34 100644
> --- a/tools/perf/arch/powerpc/util/header.c
> +++ b/tools/perf/arch/powerpc/util/header.c
> @@ -4,6 +4,7 @@
>  #include <stdlib.h>
>  #include <string.h>
>  #include <linux/stringify.h>
> +#include "../../util/header.h"
>  
>  #define mfspr(rn)       ({unsigned long rval; \
>  			 asm volatile("mfspr %0," __stringify(rn) \
> -- 
> 1.8.3.1

Re: [PATCH 1/1] perf tools: Fix build break on powerpc

[Jiri Olsa]

On Sat, Mar 26, 2016 at 11:01:47AM -0700, Sukadev Bhattiprolu wrote:
> From 502e8236082412db1d33abfad95aaf14b539502e Mon Sep 17 00:00:00 2001
> From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
> Date: Sat, 26 Mar 2016 17:31:39 -0400
> Subject: [PATCH 1/1] perf tools: Fix build break on powerpc
> MIME-Version: 1.0
> Content-Type: text/plain; charset=UTF-8
> Content-Transfer-Encoding: 8bit
> 
> 'Commit 531d2410635c ("perf tools: Do not include stringify.h from the
> kernel sources")' seems to have accidentially removed the inclusion of
> "util/header.h" from "arch/powerpc/util/header.c".
> 
> "util/header.h" provides the prototype for get_cpuid() and is needed to
> build perf on Powerpc.
> 
> 	arch/powerpc/util/header.c:17:1: error: no previous prototype for
> 	‘get_cpuid’ [-Werror=missing-prototypes]
> 
> Reported-by: Michael Ellerman <mpe@ellerman.id.au>
> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
> ---
>  tools/perf/arch/powerpc/util/header.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c
> index 6138bde..5111e34 100644
> --- a/tools/perf/arch/powerpc/util/header.c
> +++ b/tools/perf/arch/powerpc/util/header.c
> @@ -4,6 +4,7 @@
>  #include <stdlib.h>
>  #include <string.h>
>  #include <linux/stringify.h>
> +#include "../../util/header.h"

you could use just "header.h" right?

jirka

[PATCH 1/1] perf tools: Fix build break on powerpc

[Sukadev Bhattiprolu]

>From 502e8236082412db1d33abfad95aaf14b539502e Mon Sep 17 00:00:00 2001
From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Date: Sat, 26 Mar 2016 17:31:39 -0400
Subject: [PATCH 1/1] perf tools: Fix build break on powerpc
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

'Commit 531d2410635c ("perf tools: Do not include stringify.h from the
kernel sources")' seems to have accidentially removed the inclusion of
"util/header.h" from "arch/powerpc/util/header.c".

"util/header.h" provides the prototype for get_cpuid() and is needed to
build perf on Powerpc.

	arch/powerpc/util/header.c:17:1: error: no previous prototype for
	‘get_cpuid’ [-Werror=missing-prototypes]

Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
---
 tools/perf/arch/powerpc/util/header.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c
index 6138bde..5111e34 100644
--- a/tools/perf/arch/powerpc/util/header.c
+++ b/tools/perf/arch/powerpc/util/header.c
@@ -4,6 +4,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <linux/stringify.h>
+#include "../../util/header.h"
 
 #define mfspr(rn)       ({unsigned long rval; \
 			 asm volatile("mfspr %0," __stringify(rn) \
-- 
1.8.3.1

[PATCH 1/1] perf tools: Fix build break on powerpc

[Sukadev Bhattiprolu]

=46rom 502e8236082412db1d33abfad95aaf14b539502e Mon Sep 17 00:00:00 2001
=46rom: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Date: Sat, 26 Mar 2016 17:31:39 -0400
Subject: [PATCH 1/1] perf tools: Fix build break on powerpc
MIME-Version: 1.0
Content-Type: text/plain; charset=3DUTF-8
Content-Transfer-Encoding: 8bit

'Commit 531d2410635c ("perf tools: Do not include stringify.h from the
kernel sources")' seems to have accidentially removed the inclusion of
"util/header.h" from "arch/powerpc/util/header.c".

"util/header.h" provides the prototype for get_cpuid() and is needed to
build perf on Powerpc.

	arch/powerpc/util/header.c:17:1: error: no previous prototype for
	=E2=80=98get_cpuid=E2=80=99 [-Werror=3Dmissing-prototypes]

Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
---
 tools/perf/arch/powerpc/util/header.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerp=
c/util/header.c
index 6138bde..5111e34 100644
--- a/tools/perf/arch/powerpc/util/header.c
+++ b/tools/perf/arch/powerpc/util/header.c
@@ -4,6 +4,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <linux/stringify.h>
+#include "../../util/header.h"
=20
 #define mfspr(rn)       ({unsigned long rval; \
 			 asm volatile("mfspr %0," __stringify(rn) \
--=20
1.8.3.1