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74d5f3d06f
Add utilities to help checking capabilities of the running procss. Make perf link with libcap, if it is available. If no libcap-dev[el], assume no capabilities. Committer testing: $ make O=/tmp/build/perf -C tools/perf install-bin make: Entering directory '/home/acme/git/perf/tools/perf' BUILD: Doing 'make -j8' parallel build Auto-detecting system features: <SNIP> ... libbfd: [ on ] ... libcap: [ OFF ] ... libelf: [ on ] <SNIP> Makefile.config:833: No libcap found, disables capability support, please install libcap-devel/libcap-dev <SNIP> $ grep libcap /tmp/build/perf/FEATURE-DUMP feature-libcap=0 $ cat /tmp/build/perf/feature/test-libcap.make.output test-libcap.c:2:10: fatal error: sys/capability.h: No such file or directory 2 | #include <sys/capability.h> | ^~~~~~~~~~~~~~~~~~ compilation terminated. $ Now install libcap-devel and try again: $ make O=/tmp/build/perf -C tools/perf install-bin make: Entering directory '/home/acme/git/perf/tools/perf' BUILD: Doing 'make -j8' parallel build Warning: Kernel ABI header at 'tools/include/linux/bits.h' differs from latest version at 'include/linux/bits.h' diff -u tools/include/linux/bits.h include/linux/bits.h Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h' diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h Auto-detecting system features: <SNIP> ... libbfd: [ on ] ... libcap: [ on ] ... libelf: [ on ] <SNIP>> CC /tmp/build/perf/jvmti/libjvmti.o <SNIP>> $ grep libcap /tmp/build/perf/FEATURE-DUMP feature-libcap=1 $ cat /tmp/build/perf/feature/test-libcap.make.output $ ldd /tmp/build/perf/feature/test-libcap.make.bin ldd: /tmp/build/perf/feature/test-libcap.make.bin: No such file or directory $ ldd /tmp/build/perf/feature/test-libcap.bin linux-vdso.so.1 (0x00007ffc35bfe000) libcap.so.2 => /lib64/libcap.so.2 (0x00007ff9c62ff000) libc.so.6 => /lib64/libc.so.6 (0x00007ff9c6139000) /lib64/ld-linux-x86-64.so.2 (0x00007ff9c6326000) $ Signed-off-by: Igor Lubashev <ilubashe@akamai.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: James Morris <jmorris@namei.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> [ split from a larger patch ] Link: http://lkml.kernel.org/r/8a1e76cf5c7c9796d0d4d240fbaa85305298aafa.1565188228.git.ilubashe@akamai.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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.. | ||
.gitignore | ||
Makefile | ||
test-all.c | ||
test-backtrace.c | ||
test-bionic.c | ||
test-bpf.c | ||
test-clang.cpp | ||
test-compile.c | ||
test-cplus-demangle.c | ||
test-cxx.cpp | ||
test-disassembler-four-args.c | ||
test-dwarf_getlocations.c | ||
test-dwarf.c | ||
test-eventfd.c | ||
test-fortify-source.c | ||
test-get_cpuid.c | ||
test-get_current_dir_name.c | ||
test-gettid.c | ||
test-glibc.c | ||
test-gtk2-infobar.c | ||
test-gtk2.c | ||
test-hello.c | ||
test-jvmti-cmlr.c | ||
test-jvmti.c | ||
test-libaio.c | ||
test-libaudit.c | ||
test-libbabeltrace.c | ||
test-libbfd.c | ||
test-libcap.c | ||
test-libcrypto.c | ||
test-libdw-dwarf-unwind.c | ||
test-libelf-gelf_getnote.c | ||
test-libelf-getphdrnum.c | ||
test-libelf-getshdrstrndx.c | ||
test-libelf-mmap.c | ||
test-libelf.c | ||
test-libnuma.c | ||
test-libopencsd.c | ||
test-libperl.c | ||
test-libpython-version.c | ||
test-libpython.c | ||
test-libslang-include-subdir.c | ||
test-libslang.c | ||
test-libunwind-aarch64.c | ||
test-libunwind-arm.c | ||
test-libunwind-debug-frame-aarch64.c | ||
test-libunwind-debug-frame-arm.c | ||
test-libunwind-debug-frame.c | ||
test-libunwind-x86_64.c | ||
test-libunwind-x86.c | ||
test-libunwind.c | ||
test-libzstd.c | ||
test-llvm-version.cpp | ||
test-llvm.cpp | ||
test-lzma.c | ||
test-numa_num_possible_cpus.c | ||
test-pthread-attr-setaffinity-np.c | ||
test-pthread-barrier.c | ||
test-reallocarray.c | ||
test-sched_getcpu.c | ||
test-sdt.c | ||
test-setns.c | ||
test-stackprotector-all.c | ||
test-sync-compare-and-swap.c | ||
test-timerfd.c | ||
test-zlib.c |