kernel/tools/perf/Makefile.config, branch linux-4.16.y

perf tools: Integrating the CoreSight decoding library

2018-01-25T09:37:23Z

The Open CoreSight Decoding Library (openCSD) is a free and open library to decode traces collected by the CoreSight hardware infrastructure. This patch adds the required mechanic to recognise the presence of the openCSD library on a system and set up miscellaneous flags to be used in the compilation of the trace decoding feature. Signed-off-by: Mathieu Poirier Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Kim Phillips Cc: linux-arm-kernel@lists.infradead.org Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Suzuki Poulouse Link: http://lkml.kernel.org/r/1516211539-5166-2-git-send-email-mathieu.poirier@linaro.org Link: http://lkml.kernel.org/r/1516635644-24819-1-git-send-email-mathieu.poirier@linaro.org [ Merged missing test-libopencsd.c file, provided later by Mathieu ] Signed-off-by: Arnaldo Carvalho de Melo

perf trace: Remove audit-libs dependency if syscall tables are present

2018-01-23T12:51:38Z

Change the Makefile and build process to no longer require audit-libs interfaces when the architecture provides system call tables. Committer notes: Its not enough to hook into the NO_LIBAUDIT makefile block, we need to define a CONFIG_TRACE that gets selected by both architectures generating the syscall tables from the kernel headers and from detecting the availability of libaudit. With that in place we will not link against libaudit even if the necessary files are available for that, in fact we will not even try to detect its availability, speeding up a bit the feature detection phase. Signed-off-by: Hendrik Brueckner Reviewed-by: Thomas Richter Tested-by: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Michael Petlan Cc: linux-s390@vger.kernel.org LPU-Reference: 1516352177-11106-6-git-send-email-brueckner@linux.vnet.ibm.com Link: https://lkml.kernel.org/n/tip-j68lub6ipm8apvy52vd3l4cm@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf build: Display EXTRA features for VF=1 build

2018-01-23T12:51:36Z

Display the state of the rest of the features (FEATURE_TESTS_EXTRA) on a 'make VF=1' build. These features are detected manually by perf's Makefile.config so they can't be displayed with the main list, but only after we're done in Makefile.config. $ make VF=1 BUILD: Doing 'make -j4' parallel build Auto-detecting system features: ... dwarf: [ on ] ... dwarf_getlocations: [ on ] ... glibc: [ on ] ... gtk2: [ on ] SNIP ... timerfd: [ on ] ... sched_getcpu: [ on ] ... sdt: [ on ] ... setns: [ on ] extra features: ... bionic: [ OFF ] ... compile-32: [ on ] ... compile-x32: [ OFF ] ... cplus-demangle: [ on ] ... hello: [ OFF ] ... libbabeltrace: [ on ] ... liberty: [ on ] ... liberty-z: [ on ] ... libunwind-debug-frame: [ OFF ] ... libunwind-debug-frame-arm: [ OFF ] ... libunwind-debug-frame-aarch64: [ OFF ] SNIP Signed-off-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Cc: Alexander Shishkin Cc: Andi Kleen Cc: David Ahern Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20180109092646.GB11520@krava Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Enable LIBBABELTRACE by default

2018-01-08T15:10:21Z

There's no reason anymore to treat babel trace in a special way, because a) we no longer display its state b) the needed babeltrace library is now out and well adopted among distros. Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Andi Kleen Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20180107160356.28203-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf s390: Always build with -fPIC

2017-12-27T15:15:57Z

On s390, object files must be compiled with position-indepedent code in order to be incrementally linked or linked to shared libraries. Therefore, add -fPIC to the CFLAGS for s390 to ensure each object file is built properly. Reported-by: Jonathan Hermann Signed-off-by: Hendrik Brueckner Cc: Heiko Carstens Cc: Martin Schwidefsky Cc: Thomas Richter Cc: linux s390 list Link: https://lkml.kernel.org/r/20171207080951.GC4889@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

Revert "perf s390: Always build with -fPIC"

2017-12-27T15:15:57Z

This one made x86 always build with -fPIC, when the intention was for s390 to be built that way, due to a rebase mistake. Reported-by: Hendrik Brueckner This reverts commit 1dc4ddf112a408e607a073d951b962b6c6e2bd6c. Signed-off-by: Arnaldo Carvalho de Melo

perf trace: Use generated syscall table on s390 too

2017-12-27T15:15:50Z

This should speed up accessing new system calls introduced with the kernel rather than waiting for libaudit updates to include them. It also enables users to specify wildcards, for example, perf trace -e 'open*', just like was already possible on x86. Signed-off-by: Hendrik Brueckner Reviewed-by: Thomas Richter Cc: Jiri Olsa Cc: Michael Petlan Cc: linux-s390@vger.kernel.org LPU-Reference: 1512635281-20733-2-git-send-email-brueckner@linux.vnet.ibm.com Link: https://lkml.kernel.org/n/tip-htplh3nbrivi7g3cffbh4fsu@git.kernel.org [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo

Merge branch 'perf/urgent' into perf/core, to pick up fixes and to refresh to v4.15

2017-12-06T22:37:06Z

Signed-off-by: Ingo Molnar

perf tools: Fix up build in hardnened environments

2017-12-05T18:43:52Z

On Fedora systems the perl and python CFLAGS/LDFLAGS include the hardened specs from redhat-rpm-config package. We apply them only for perl/python objects, which makes them not compatible with the rest of the objects and the build fails with: /usr/bin/ld: perf-in.o: relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a shared object; recompile with -f +PIC /usr/bin/ld: libperf.a(libperf-in.o): relocation R_X86_64_32S against `.text' can not be used when making a shared object; recompile w +ith -fPIC /usr/bin/ld: final link failed: Nonrepresentable section on output collect2: error: ld returned 1 exit status make[2]: *** [Makefile.perf:507: perf] Error 1 make[1]: *** [Makefile.perf:210: sub-make] Error 2 make: *** [Makefile:69: all] Error 2 Mainly it's caused by perl/python objects being compiled with: -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 which prevent the final link impossible, because it will check for 'proper' objects with following option: -specs=/usr/lib/rpm/redhat/redhat-hardened-ld Signed-off-by: Jiri Olsa Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Link: https://lkml.kernel.org/r/20171204082437.GC30564@krava Signed-off-by: Arnaldo Carvalho de Melo

perf s390: Always build with -fPIC

2017-12-05T13:24:32Z

On s390, object files must be compiled with position-indepedent code in order to be incrementally linked or linked to shared libraries. Therefore, add -fPIC to the CFLAGS for s390 to ensure each object file is built properly. Reported-by: Jonathan Hermann Signed-off-by: Hendrik Brueckner Cc: Heiko Carstens Cc: Martin Schwidefsky Cc: Thomas Richter Cc: linux s390 list LPU-Reference: 1512031765-9382-1-git-send-email-brueckner@linux.vnet.ibm.com Link: https://lkml.kernel.org/n/tip-a8wga8hrl0d0r84cal96fmgv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo