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65 Commits

Author SHA1 Message Date
Peter Foley baa1973ebc tools build: Fix objtool build with clang 
Clang doesn't support multiple arguments being passed to -Wp, so split
them.

  Fixes this error:
  HOSTCC   tools/objtool/fixdep.o
  cat: tools/objtool/.fixdep.o.d: No such file or directory

Signed-off-by: Peter Foley <pefoley2@pefoley.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20161128024346.17371-1-pefoley2@pefoley.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-12-05 15:51:42 -03:00
Jiri Olsa 1cd6472e3f tools build: Make fixdep parsing wait for last target 
The fixdep tool, among other things, replaces the target of the object
in the gcc generated dependency output file.

The parsing code assumes there's only single target in the rule but this
is not always the case as described in here:

  https://gcc.gnu.org/ml/gcc-help/2016-11/msg00099.html

Make the fixdep code smart enough to skip all the possible targets.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Peter Foley <pefoley2@pefoley.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20161201130025.GA16430@krava
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-12-05 15:51:42 -03:00
Jiri Olsa 285932a258 tools build: Add jvmti feature detection support 
Adding support to detect jvmti support. It is not plugged into the
FEATURE_TESTS machinery, because it's quite rare and will be used
separately from perf via feature_check call.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: William Cohen <wcohen@redhat.com>
Link: http://lkml.kernel.org/r/1478093749-5602-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-11-14 12:40:32 -03:00
Jiri Olsa 2ec8107d8e tools build: Add CFLAGS_REMOVE_* support 
Adding support to remove options from final CFLAGS for both object file
and build target. It's now possible to remove CFLAGS options like:

  CFLAGS_REMOVE_krava.o += -Wstrict-prototypes

Committer notes:

This comes from the kernel's kbuild infrastructure, the subset that is
supported in tools/ is being documented at tools/build/Documentation/Build.txt.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: William Cohen <wcohen@redhat.com>
Link: http://lkml.kernel.org/r/1478093749-5602-2-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-11-14 11:37:25 -03:00
Wang Nan 87095f7dde tools build: Add feature detection for g++ 
Check if g++ is available. The result will be used by builtin clang and
LLVM support. Since LLVM requires C++11, this feature detector checks
std::move().

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1474874832-134786-3-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-10-05 19:59:35 -03:00
Wang Nan f61bdc3304 tools build: Support compiling C++ source file 
Add new rule to compile .cpp file to .o use g++. C++ support is required
for built-in clang and LLVM support.

Linker side support will be introduced by following commits.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1474874832-134786-2-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-10-05 19:58:51 -03:00
Jiri Olsa 6b3db6f9b9 tools build: Make fixdep a hostprog 
It is used in the build process, so stop suppressing its build in tools
cross builds.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20160927141846.GA6589@krava
[ Use HOSTCC on the $(OUTPUT)fixdep target, it was using the x-compiler
  to link fixdep-in.o, that was correctly built with HOSTCC and thus failing ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-10-03 11:40:35 -03:00
Jiri Olsa 0c3b7e4261 tools build: Add support for host programs format 
In some cases, like for fixdep and shortly for jevents, we need to build a tool
to run on the host that will be used in building a tool, such as perf, that is
being cross compiled, so do like the kernel and provide HOSTCC, HOSTLD and HOSTAR
to do that.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Requested-by: Andi Kleen <andi@firstfloor.org>
Requested-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20160927141846.GA6589@krava
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-10-03 11:39:09 -03:00
Masami Hiramatsu e26e63be64 perf build: Add sdt feature detection 
This checks whether sys/sdt.h is available or not, which is required for
DTRACE_PROBE().

We can disable this feature by passing NO_SDT=1 when building.

This flag will be used for SDT test case and further SDT events in
perftools.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/146831795615.17065.17513820540591053933.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-07-13 23:09:09 -03:00
Arnaldo Carvalho de Melo 1c1a3a4729 perf tools: Add feature detection for gelf_getnote() 
That is not present on some libelf implementations, such as the one used
in Alpine Linux: libelf-0.8.13.

This ends up disabling the SDT code, that relies on this function.

One alternative would be to provide an weak fallback implementation or
the open coded variant used by the buildid sysfs notes reading code.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-82lh22ybedy9b9lych8xj12g@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-07-12 15:20:41 -03:00
Arnaldo Carvalho de Melo 2492c465ad perf build: Add feature detection for libelf's elf_getshdrstrndx() 
That appeared after 0.140, and will be used in the SDT code, so, to
avoid bisection break on older systems, add a feature detection and
provide a stub with a pr_debug() to keep it building.

Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-80y0eldgweorqnwha9rvfxjr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-07-04 19:38:59 -03:00
Linus Torvalds 5b26fc8824 Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 
Pull kbuild updates from Michal Marek:

 - new option CONFIG_TRIM_UNUSED_KSYMS which does a two-pass build and
   unexports symbols which are not used in the current config [Nicolas
   Pitre]

 - several kbuild rule cleanups [Masahiro Yamada]

 - warning option adjustments for gcov etc [Arnd Bergmann]

 - a few more small fixes

* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: (31 commits)
  kbuild: move -Wunused-const-variable to W=1 warning level
  kbuild: fix if_change and friends to consider argument order
  kbuild: fix adjust_autoksyms.sh for modules that need only one symbol
  kbuild: fix ksym_dep_filter when multiple EXPORT_SYMBOL() on the same line
  gcov: disable -Wmaybe-uninitialized warning
  gcov: disable tree-loop-im to reduce stack usage
  gcov: disable for COMPILE_TEST
  Kbuild: disable 'maybe-uninitialized' warning for CONFIG_PROFILE_ALL_BRANCHES
  Kbuild: change CC_OPTIMIZE_FOR_SIZE definition
  kbuild: forbid kernel directory to contain spaces and colons
  kbuild: adjust ksym_dep_filter for some cmd_* renames
  kbuild: Fix dependencies for final vmlinux link
  kbuild: better abstract vmlinux sequential prerequisites
  kbuild: fix call to adjust_autoksyms.sh when output directory specified
  kbuild: Get rid of KBUILD_STR
  kbuild: rename cmd_as_s_S to cmd_cpp_s_S
  kbuild: rename cmd_cc_i_c to cmd_cpp_i_c
  kbuild: drop redundant "PHONY += FORCE"
  kbuild: delete unnecessary "@:"
  kbuild: mark help target as PHONY
  ...
 2016-05-26 22:01:22 -07:00
He Kuang f9be7eefcc perf build: Add build-test for debug-frame on arm/arm64 
Debug-frame for remote platforms is not related to the host platform, so
we should test each platform separately.

Signed-off-by: He Kuang <hekuang@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1462866037-30382-5-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-05-11 12:24:58 -03:00
He Kuang b1d960000c perf build: Add build-test for libunwind cross-platforms support 
Currently only test for local libunwind. We should check all supported
platforms so we can use them to parse perf.data with callchain info on
different machines.

Signed-off-by: He Kuang <hekuang@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1462866037-30382-4-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-05-11 12:24:58 -03:00
Florian Fainelli 1a71476e4f bpf tools: Fix syscall argument 
Coverity flagged this under CID 1354884 as a sizeof mismatch, it turns
out that the argument "attr" passed to syscall should have been a
pointer to attr in the first place.

Reported-by: coverity (CID 1354884)
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Wang Nan <wangnan0@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Fixes: 8f9e05fb29 ("perf tools: Fix PowerPC native building")
Link: http://lkml.kernel.org/r/1461551694-5512-3-git-send-email-f.fainelli@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-04-28 09:58:57 -03:00
Florian Fainelli a431d67934 bpf tools: Remove expression with no effect 
Assigning "attr" to "attr" does not have any effect, but was caught by
Coverity, so let's remove this.

Reported-by: coverity (CID 1354720)
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Fixes: 1b76c13e4b ("bpf tools: Introduce 'bpf' library and add bpf feature check")
Link: http://lkml.kernel.org/r/1461551694-5512-2-git-send-email-f.fainelli@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-04-28 09:58:57 -03:00
Masahiro Yamada 23d4384870 kbuild: rename cmd_cc_i_c to cmd_cpp_i_c 
This command just preprocesses .c files into .i files, so cmd_cpp_i_c
seems more suitable.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
 2016-04-20 10:48:19 +02:00
Arnaldo Carvalho de Melo bd0419e2a5 perf probe: Check if dwarf_getlocations() is available 
If not, tell the user that:

  config/Makefile:273: Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.157

And return -ENOTSUPP in die_get_var_range(), failing features that
need it, like the one pointed out above.

This fixes the build on older systems, such as Ubuntu 12.04.5.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Vinson Lee <vlee@freedesktop.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-9l7luqkq4gfnx7vrklkq4obs@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-04-06 10:44:28 -03:00
Masahiro Yamada 676787939e tools build: Use .s extension for preprocessed assembler code 
The "man gcc" says .i extension represents the file is C source code
that should not be preprocessed.  Here, .s should be used.

For clarification,
  .c  ---(preprocess)--->  .i
  .S  ---(preprocess)--->  .s

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Aaro Koskinen <aaro.koskinen@nokia.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Lukas Wunner <lukas@wunner.de>
Link: http://lkml.kernel.org/r/1454263140-19670-1-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-03-03 11:10:37 -03:00
Stephane Eranian 8ee4646038 perf build: Add libcrypto feature detection 
Will be used to generate build-ids in the jitdump code.

Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Carl Love <cel@us.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John McCutchan <johnmccutchan@google.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sonny Rao <sonnyrao@chromium.org>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1448874143-7269-3-git-send-email-eranian@google.com
[ tools/perf/Makefile.perf comment about NO_LIBCRYPTO and added it to tests/make ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-02-05 09:46:45 -03:00
Jiri Olsa 76c4aaec41 perf build: Fix feature-dump checks, we need to test all features 
I see problem with test-all case speedup, because it does not
comprise checks for 32bits compilations, fix it.

The problem could be noticed by calling:

  make -C tools/perf feature-dump

That would end up misdetecting the feature-compile-x32, that, building
using 'gcc -mx32' needs stub headers not present in a fedora 23 devel
machine and thus fail to compile, but ended up appearing as detected,
i.e. present in tools/perf/FEATURE-DUMP as 'feature-compile-x32=1'.

With this fix it correctly appears as 'feature-compile-x32=0' and if we
uninstall the libc devel files for 32 bits (glibc-devel.i686), then the
relevant variable is flipped from 'feature-compile-32=1' to
'feature-compile-32=0'.

The same things happened for bionic and libbabeltrace, that were
misdetected because the are no tested in test-all.c

Reported-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-u0sjaddf1r9m8icpd98ry7fz@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-01-28 19:04:19 -03:00
Wang Nan cf9162c290 tools build: Check basic headers for test-compile feature checker 
An i386 binary can be linked correctly even without correct headers.
Which causes problem. For exmaple:

 $ mv /tmp/oxygen_root/usr/include/gnu/stubs-32.h{,.bak}
 $ make tools/perf
 Auto-detecting system features:
 ...                         dwarf: [ on  ]
 [SNIP]
   GEN      common-cmds.h
   CC       perf-read-vdso32
 In file included from /tmp/oxygen_root/usr/include/features.h:388:0,
                  from /tmp/oxygen_root/usr/include/stdio.h:27,
                  from perf-read-vdso.c:1:
 /tmp/oxygen_root/usr/include/gnu/stubs.h:7:27: fatal error: gnu/stubs-32.h: No such file or directory
  # include <gnu/stubs-32.h>
                           ^
 compilation terminated.
 ...

In this patch we checks not only compiler and linker, but also basic
headers in test-compile test case, make it fail on a platform
lacking correct headers.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Link: http://lkml.kernel.org/r/1453893742-20603-1-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-01-27 11:59:32 -03:00
Wang Nan 9fd4186ac1 tools build: Allow subprojects select all feature checkers 
Put feature checkers not in original FEATURE_TESTS to a new list and
allow subproject select all feature checkers by setting FEATURE_TESTS to
'all'.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Link: http://lkml.kernel.org/r/1453715801-7732-4-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-01-26 12:12:48 -03:00
Wang Nan 0c4d40d580 tools build: Add BPF feature check to test-all 
The test-all.c file doesn't check BPF related features. For an
environment with all other features enabled, BPF would be considered
enabled without doing real feature check.

This patch adds test-bpf.c into test-all.c.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1452520124-2073-11-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-01-11 19:22:21 -03:00
Wang Nan 8f9e05fb29 perf tools: Fix PowerPC native building 
Checks BPF syscall number, turn off libbpf building on platform doesn't
correctly support sys_bpf instead of blocking compiling.

Reported-and-Tested-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1452520124-2073-7-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-01-11 19:22:20 -03:00