kernel/tools/perf/Makefile.config, branch linux-5.14.y

perf unwind: Do not overwrite FEATURE_CHECK_LDFLAGS-libunwind-{x86,aarch64}

2021-09-22T10:39:30Z

[ Upstream commit cdf32b44678c382a31dc183d9a767306915cda7b ] When setting LIBUNWIND_DIR, we first set FEATURE_CHECK_LDFLAGS-libunwind-{aarch64,x86} = -L$(LIBUNWIND_DIR)/lib. This happens a bit before, the overwritting, in: libunwind_arch_set_flags = $(eval $(libunwind_arch_set_flags_code)) define libunwind_arch_set_flags_code FEATURE_CHECK_CFLAGS-libunwind-$(1) = -I$(LIBUNWIND_DIR)/include FEATURE_CHECK_LDFLAGS-libunwind-$(1) = -L$(LIBUNWIND_DIR)/lib endef ifdef LIBUNWIND_DIR LIBUNWIND_CFLAGS = -I$(LIBUNWIND_DIR)/include LIBUNWIND_LDFLAGS = -L$(LIBUNWIND_DIR)/lib LIBUNWIND_ARCHS = x86 x86_64 arm aarch64 debug-frame-arm debug-frame-aarch64 $(foreach libunwind_arch,$(LIBUNWIND_ARCHS),$(call libunwind_arch_set_flags,$(libunwind_arch))) endif Look at that 'foreach' on all the LIBUNWIND_ARCHS. After commit 5c4d7c82c0dc ("perf unwind: Do not put libunwind-{x86,aarch64} in FEATURE_TESTS_BASIC"), FEATURE_CHECK_LDFLAGS-libunwind-{x86,aarch64} is overwritten. As a result, the remote libunwind libraries cannot be searched from $(LIBUNWIND_DIR)/lib directory during feature check tests. Fix it with variable appending. Before this patch: perf$ make VF=1 LIBUNWIND_DIR=/opt/libunwind_aarch64 BUILD: Doing 'make -j16' parallel build ... ... libopencsd: [ OFF ] ... libunwind-x86: [ OFF ] ... libunwind-x86_64: [ OFF ] ... libunwind-arm: [ OFF ] ... libunwind-aarch64: [ OFF ] ... libunwind-debug-frame: [ OFF ] ... libunwind-debug-frame-arm: [ OFF ] ... libunwind-debug-frame-aarch64: [ OFF ] ... cxx: [ OFF ] perf$ cat ../build/feature/test-libunwind-aarch64.make.output /usr/bin/ld: cannot find -lunwind-aarch64 /usr/bin/ld: cannot find -lunwind-aarch64 collect2: error: ld returned 1 exit status After this patch: perf$ make VF=1 LIBUNWIND_DIR=/opt/libunwind_aarch64 BUILD: Doing 'make -j16' parallel build ... libopencsd: [ OFF ] ... libunwind-x86: [ OFF ] ... libunwind-x86_64: [ OFF ] ... libunwind-arm: [ OFF ] ... libunwind-aarch64: [ on ] ... libunwind-debug-frame: [ OFF ] ... libunwind-debug-frame-arm: [ OFF ] ... libunwind-debug-frame-aarch64: [ OFF ] ... cxx: [ OFF ] perf$ cat ../build/feature/test-libunwind-aarch64.make.output perf$ ldd ./perf linux-vdso.so.1 (0x00007ffdf07da000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f30953dc000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f30951d4000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f3094e36000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f3094c32000) libelf.so.1 => /usr/lib/x86_64-linux-gnu/libelf.so.1 (0x00007f3094a18000) libdw.so.1 => /usr/lib/x86_64-linux-gnu/libdw.so.1 (0x00007f30947cc000) libunwind-x86_64.so.8 => /usr/lib/x86_64-linux-gnu/libunwind-x86_64.so.8 (0x00007f30945ad000) libunwind.so.8 => /usr/lib/x86_64-linux-gnu/libunwind.so.8 (0x00007f3094392000) liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f309416c000) libunwind-aarch64.so.8 => not found libslang.so.2 => /lib/x86_64-linux-gnu/libslang.so.2 (0x00007f3093c8a000) libpython2.7.so.1.0 => /usr/local/lib/libpython2.7.so.1.0 (0x00007f309386b000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f309364e000) libnuma.so.1 => /usr/lib/x86_64-linux-gnu/libnuma.so.1 (0x00007f3093443000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f3093052000) /lib64/ld-linux-x86-64.so.2 (0x00007f3096097000) libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 (0x00007f3092e42000) libutil.so.1 => /lib/x86_64-linux-gnu/libutil.so.1 (0x00007f3092c3f000) Fixes: 5c4d7c82c0dceccf ("perf unwind: Do not put libunwind-{x86,aarch64} in FEATURE_TESTS_BASIC") Signed-off-by: Li Huafei Cc: Alexander Shishkin Cc: He Kuang Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Zhang Jinhao Link: http://lore.kernel.org/lkml/20210823134340.60955-1-lihuafei1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf build: Install perf_dlfilter.h

2021-07-01T19:14:38Z

Users of the --dlfilter option need to include perf_dlfilter.h in their filters. Install it to the include path. Signed-off-by: Adrian Hunter Cc: Andi Kleen Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20210627131818.810-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

Merge remote-tracking branch 'torvalds/master' into perf/core

2021-06-22T16:56:50Z

To pick up fixes, since perf/urgent is already upstream. Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Copy uapi/asm/perf_regs.h from the kernel for MIPS

2021-06-01T13:07:46Z

To allow the build to complete on older systems, where those files are either not uptodate, lacking some recent additions or not present at all. And check if the copy drifts from the kernel. This commit is similar with commit 12f020338a2c ("tools: Copy uapi/asm/perf_regs.h from the kernel") With this commit, we can avoid the following build error in any case: tools/perf/arch/mips/include/perf_regs.h:7:10: fatal error: asm/perf_regs.h: No such file or directory #include ^~~~~~~~~~~~~~~~~ compilation terminated. Signed-off-by: Tiezhu Yang Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Xuefeng Li Link: http://lore.kernel.org/lkml/1622548436-12472-1-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Arnaldo Carvalho de Melo

perf parse-events: Add bison --file-prefix-map option

2021-05-27T16:55:28Z

During a perf build with O= bison stores full paths in generated files and those paths are stored in resulting perf binary. Starting from bison v3.7.1 those paths can be remapped by using the --file-prefix-map option. Use this option if possible to make perf binary more reproducible. Signed-off-by: Denys Zagorui Acked-by: Jiri Olsa Acked-by: Namhyung Kim Cc: Alexander Shishkin Cc: Ingo Molnar Cc: Mark Rutland Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20210524111514.65713-3-dzagorui@cisco.com Signed-off-by: Arnaldo Carvalho de Melo

perf build: Improve error message for old/missing clang

2021-05-21T19:47:40Z

clang is required to build perf with BUILD_BPF_SKEL=1. Improve the error message to highlight that: 1) clang could be either missing or too old; 2) clang is only required with BUILD_BPF_SKEL=1. Suggested-by: Arnaldo Carvalho de Melo Signed-off-by: Song Liu Cc: Jiri Olsa Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Fix dynamic libbpf link

2021-05-10T12:01:00Z

Justin reported broken build with LIBBPF_DYNAMIC=1. When linking libbpf dynamically we need to use perf's hashmap object, because it's not exported in libbpf.so (only in libbpf.a). Following build is now passing: $ make LIBBPF_DYNAMIC=1 BUILD: Doing 'make -j8' parallel build ... $ ldd perf | grep libbpf libbpf.so.0 => /lib64/libbpf.so.0 (0x00007fa7630db000) Fixes: eee19501926d ("perf tools: Grab a copy of libbpf's hashmap") Reported-by: Justin M. Forbes Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Ian Rogers Cc: Mark Rutland Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20210508205020.617984-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf build: Defer printing detected features to the end of all feature checks

2021-04-29T14:22:33Z

We were doing it in tools/build/Makefile.feature, after running the feature checks, but then in tools/perf/Makefile.config we can call more feature checks when we notice that some feature check failed, like when libbfd wasn't detected and we add libraries to the LDFLAGS of its feature check to try again, etc. Acked-by: Jiri Olsa Signed-off-by: Arnaldo Carvalho de Melo

perf build: Regenerate the FEATURE_DUMP file after extra feature checks

2021-04-29T13:31:00Z

Feature detection is done in tools/build/Makefile.feature, we may exit there with some features not detected and then, in tools/perf/Makefile.config try adding extra libraries to link and then do extra feature checks to see if we now find the feature. This is the case with the disassembler-four-args that checks if the diassembler() function in libopcodes (binutils) has a signature with one or with four arguments, as this is not ABI and they changed it at some point. This is not a problem when doing normal builds, for instance: $ make -C tools/perf O=/tmp/build/perf As we don't use what is in FEATURE-DUMP at that point, but is a problem if we pass FEATURE_DUMP=/previously-detected-features as we do in 'make -C tools/perf build-test' to reuse the feature detection in the many build combinations we test there. When that is done feature-disassembler-four-args will be set to 0, but opensuse 15.1 has the four arguments function signature in disassembler(). The build thus fails. Fix it by rewriting the FEATURE-DUMP file at the end of tools/perf/Makefile.config to register features we retested in that make file. Signed-off-by: Jiri Olsa Reported-by: Arnaldo Carvalho de Melo Tested-by: Arnaldo Carvalho de Melo Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Enable libtraceevent dynamic linking

2021-04-29T13:31:00Z

Currently we support only static linking with kernel's libtraceevent (tools/lib/traceevent). This patch adds libtraceevent package detection and support to link perf with it dynamically. The libtraceevent package status is displayed with: $ make VF=1 LIBTRACEEVENT_DYNAMIC=1 ... ... libtraceevent: [ on ] Default behavior remains the same (static linking). Committer testing: $ make LIBTRACEEVENT_DYNAMIC=1 VF=1 O=/tmp/build/perf -C tools/perf install-bin |& grep traceevent Makefile.config:1090: *** Error: No libtraceevent devel library found, please install libtraceevent-devel. Stop. $ Signed-off-by: Michael Petlan Tested-by: Arnaldo Carvalho de Melo Cc: Jiri Olsa LPU-Reference: 20210428092023.4009-1-mpetlan@redhat.com Signed-off-by: Arnaldo Carvalho de Melo