linux/tools/build, branch v4.7

Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

2016-05-27T05:01:22Z

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 ...

perf build: Add build-test for debug-frame on arm/arm64

2016-05-11T15:24:58Z

Debug-frame for remote platforms is not related to the host platform, so we should test each platform separately. Signed-off-by: He Kuang Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Andi Kleen Cc: David Ahern Cc: Ekaterina Tumanova Cc: Josh Poimboeuf Cc: Kan Liang Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Pekka Enberg Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Sukadev Bhattiprolu Cc: Wang Nan Link: http://lkml.kernel.org/r/1462866037-30382-5-git-send-email-hekuang@huawei.com Signed-off-by: Arnaldo Carvalho de Melo

perf build: Add build-test for libunwind cross-platforms support

2016-05-11T15:24:58Z

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 Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Andi Kleen Cc: David Ahern Cc: Ekaterina Tumanova Cc: Josh Poimboeuf Cc: Kan Liang Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Pekka Enberg Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Sukadev Bhattiprolu Cc: Wang Nan Link: http://lkml.kernel.org/r/1462866037-30382-4-git-send-email-hekuang@huawei.com Signed-off-by: Arnaldo Carvalho de Melo

bpf tools: Fix syscall argument

2016-04-28T12:58:57Z

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 Acked-by: Alexei Starovoitov Acked-by: Wang Nan Cc: Jiri Olsa Fixes: 8f9e05fb298f ("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

bpf tools: Remove expression with no effect

2016-04-28T12:58:57Z

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 Tested-by: Wang Nan Acked-by: Alexei Starovoitov Cc: Jiri Olsa Fixes: 1b76c13e4b36 ("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

kbuild: rename cmd_cc_i_c to cmd_cpp_i_c

2016-04-20T08:48:19Z

This command just preprocesses .c files into .i files, so cmd_cpp_i_c seems more suitable. Signed-off-by: Masahiro Yamada Acked-by: Arnaldo Carvalho de Melo Signed-off-by: Michal Marek

perf probe: Check if dwarf_getlocations() is available

2016-04-06T13:44:28Z

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 Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Vinson Lee Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-9l7luqkq4gfnx7vrklkq4obs@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

tools build: Use .s extension for preprocessed assembler code

2016-03-03T14:10:37Z

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 Acked-by: Jiri Olsa Cc: Aaro Koskinen Cc: Adrian Hunter Cc: Lukas Wunner Link: http://lkml.kernel.org/r/1454263140-19670-1-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Arnaldo Carvalho de Melo

perf build: Add libcrypto feature detection

2016-02-05T12:46:45Z

Will be used to generate build-ids in the jitdump code. Signed-off-by: Stephane Eranian Cc: Adrian Hunter Cc: Andi Kleen Cc: Carl Love Cc: David Ahern Cc: Jiri Olsa Cc: John McCutchan Cc: Namhyung Kim Cc: Pawel Moll Cc: Peter Zijlstra Cc: Sonny Rao Cc: Sukadev Bhattiprolu 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

perf build: Fix feature-dump checks, we need to test all features

2016-01-28T22:04:19Z

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 Signed-off-by: Jiri Olsa Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-u0sjaddf1r9m8icpd98ry7fz@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo