1. 14 Feb, 2019 31 commits
    • Mathieu Poirier's avatar
      perf cs-etm: Make cs_etm__run_decoder() queue independent · 23cfcd6d
      Mathieu Poirier authored
      This patch makes decoding of auxtrace buffer centered around a struct
      cs_etm_queue.  This eliminates surperflous variables and is a precursor
      for work that simplifies the main decoder loop.
      Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Leo Yan <leo.yan@linaro.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Suzuki K Poulouse <suzuki.poulose@arm.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Link: http://lkml.kernel.org/r/20190212171618.25355-11-mathieu.poirier@linaro.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      23cfcd6d
    • Mathieu Poirier's avatar
      perf cs-etm: Rethink kernel address initialisation · 4b6df11a
      Mathieu Poirier authored
      Moving initialisation of the kernel start address to function
      cs_etm__setup_queues(), considered to be the common denominator for
      queue initialisation.  That way we don't have to repeat the same code
      at different places.
      
      No change of functionatlity is introduced by this patch.
      Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Leo Yan <leo.yan@linaro.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Suzuki K Poulouse <suzuki.poulose@arm.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Link: http://lkml.kernel.org/r/20190212171618.25355-10-mathieu.poirier@linaro.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      4b6df11a
    • Mathieu Poirier's avatar
      perf cs-etm: Cleaning up function cs_etm__alloc_queue() · 4f5b3713
      Mathieu Poirier authored
      Function cs_etm__alloc_queue() should only be concerned with the allocation
      of memory for the etmq and accompanying decoder.  Everything else should
      be done in the calling function.
      Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Leo Yan <leo.yan@linaro.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Suzuki K Poulouse <suzuki.poulose@arm.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Link: http://lkml.kernel.org/r/20190212171618.25355-9-mathieu.poirier@linaro.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      4f5b3713
    • Mathieu Poirier's avatar
      perf cs-etm: Fix erroneous comment · e4aa592d
      Mathieu Poirier authored
      The comment just before initialising the decoder is plane wrong since it
      is part of the decoding queue setup function and the operation code
      specifically mention that trace data is to be decoded rather than printed
      out.
      
      This patch simply fix the comment to prevent people from getting really
      confused.
      Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Leo Yan <leo.yan@linaro.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Suzuki K Poulouse <suzuki.poulose@arm.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Link: http://lkml.kernel.org/r/20190212171618.25355-8-mathieu.poirier@linaro.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      e4aa592d
    • Mathieu Poirier's avatar
      perf cs-etm: Introducing function cs_etm__init_trace_params() · 2507a3d9
      Mathieu Poirier authored
      The trace parameter initialisation code is repeated in two different
      places, something that bloats the file and can lead to errors.  This
      is fixed by introducing a helper function and calling the right
      protocol initialisation code when required.
      Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Leo Yan <leo.yan@linaro.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Suzuki K Poulouse <suzuki.poulose@arm.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Link: http://lkml.kernel.org/r/20190212171618.25355-7-mathieu.poirier@linaro.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      2507a3d9
    • Mathieu Poirier's avatar
      perf cs-etm: Fix memory leak in error path · ae4d9f52
      Mathieu Poirier authored
      Memory allocated for variable 't_params' isn't released properly in the
      error path of function cs_etm_queue *cs_etm__alloc_queue() and
      cs_etm__dump_event(), something this patch addresses.
      Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Leo Yan <leo.yan@linaro.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Suzuki K Poulouse <suzuki.poulose@arm.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Link: http://lkml.kernel.org/r/20190212171618.25355-6-mathieu.poirier@linaro.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      ae4d9f52
    • Mathieu Poirier's avatar
      perf cs-etm: Introducing function cs_etm_decoder__init_dparams() · 65963e5b
      Mathieu Poirier authored
      Introducing function cs_etm_decoder__init_dparams() to avoid repeating
      code at two different places.
      Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Leo Yan <leo.yan@linaro.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Suzuki K Poulouse <suzuki.poulose@arm.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Link: http://lkml.kernel.org/r/20190212171618.25355-5-mathieu.poirier@linaro.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      65963e5b
    • Mathieu Poirier's avatar
      perf cs-etm: Fix wrong return values in error path · d3267ad4
      Mathieu Poirier authored
      Function cs_etm__mem_access() is supposed to return a u32 but the error
      path returns negative values at a couple of places, something that really
      throws off the clients using it.  Fix the situation by return '0'.
      Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Leo Yan <leo.yan@linaro.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Suzuki K Poulouse <suzuki.poulose@arm.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Link: http://lkml.kernel.org/r/20190212171618.25355-4-mathieu.poirier@linaro.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      d3267ad4
    • Mathieu Poirier's avatar
      perf cs-etm: Remove unused structure field "time" and "timestamp" · fc7ac413
      Mathieu Poirier authored
      Field "time" and "timestamp" in structure cs_etm_queue are no longer
      used and need to be removed.
      Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Leo Yan <leo.yan@linaro.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Suzuki K Poulouse <suzuki.poulose@arm.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Link: http://lkml.kernel.org/r/20190212171618.25355-3-mathieu.poirier@linaro.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      fc7ac413
    • Mathieu Poirier's avatar
      perf cs-etm: Remove unused structure field "state" · b611f63b
      Mathieu Poirier authored
      Field "state" in structure cs_etm_queue is no longer used and needs
      to be removed.
      Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Leo Yan <leo.yan@linaro.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Suzuki K Poulouse <suzuki.poulose@arm.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Link: http://lkml.kernel.org/r/20190212171618.25355-2-mathieu.poirier@linaro.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      b611f63b
    • Arnaldo Carvalho de Melo's avatar
      perf build: Add missing FEATURE_CHECK_LDFLAGS-libcrypto · 271402a3
      Arnaldo Carvalho de Melo authored
      When the libcrypto feature test was added we forgot to add its
      FEATURE_CHECK_LDFLAGS pointing to the library needed to link with the
      test-all.bin feature test fast path binary, so even when it was
      introduced we got this:
      
        $ cat /tmp/build/perf/feature/test-all.make.output
        /usr/bin/ld: /tmp/ccjKeJJU.o: in function `main_test_libcrypto':
        /home/acme/git/perf/tools/build/feature/test-libcrypto.c:10: undefined reference to `MD5_Init'
        /usr/bin/ld: /home/acme/git/perf/tools/build/feature/test-libcrypto.c:11: undefined reference to `MD5_Update'
        /usr/bin/ld: /home/acme/git/perf/tools/build/feature/test-libcrypto.c:12: undefined reference to `MD5_Final'
        /usr/bin/ld: /home/acme/git/perf/tools/build/feature/test-libcrypto.c:14: undefined reference to `SHA1'
        collect2: error: ld returned 1 exit status
        $ cat /tmp/build/perf/feature/test-libcrypto.
        test-libcrypto.bin          test-libcrypto.d            test-libcrypto.make.output
        $ cat /tmp/build/perf/feature/test-libcrypto.make.output
        $
      
      Fix it, so that we keep the fast path, which, at this point, will fail
      with the unwind-ARCH feature tests, that will be fixed in a followup
      patch:
      
        $ make -C tools/perf O=/tmp/build/perf
        ...                     libcrypto: [ on  ]
         <SNIP>
        $ cat /tmp/build/perf/feature/test-all.make.output
        $ ldd /tmp/build/perf/feature/test-all.bin | grep libcrypto
      	libcrypto.so.1.1 => /lib64/libcrypto.so.1.1 (0x00007f9892805000)
        $
        $ grep libcrypto /tmp/build/perf/FEATURE-DUMP
        feature-libcrypto=1
        $
      
      With the unwind-ARCH tests fixed, we now finally manage to get
      test-all.bin built and linked with the features it tests, among them the
      ones fixed in this patchkit:
      
        $ ldd /tmp/build/perf/feature/test-all.bin  | egrep 'unwind|crypto'
      	libcrypto.so.1.1 => /lib64/libcrypto.so.1.1 (0x00007f95cf2b8000)
      	libunwind-x86_64.so.8 => /lib64/libunwind-x86_64.so.8 (0x00007f95cf294000)
      	libunwind.so.8 => /lib64/libunwind.so.8 (0x00007f95cf278000)
        $
      
      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@kernel.org>
      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: Stephane Eranian <eranian@google.com>
      Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
      Fixes: 8ee46460 ("perf build: Add libcrypto feature detection")
      Link: https://lkml.kernel.org/n/tip-rexc248jorf5b4l3qjn888cz@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      271402a3
    • Arnaldo Carvalho de Melo's avatar
      tools build: Add test-reallocarray.c to test-all.c to fix the build · a96c03e8
      Arnaldo Carvalho de Melo authored
      When a test is in the FEATURE_TESTS_BASIC list in tools/build/Makefile.feature
      must be added to tools/build/feature/test-all.c, because the successfull
      compilation and linking of that test-all.bin file means that all the
      features listed in FEATURE_TESTS_BASIC are present in the system, so we
      don't have to go on feature by feature test building them.
      
      Since reallocarray() is expected to be present in modern systems, it has
      a place in FEATURE_TESTS_BASIC, so that we speed up the build process
      building just that file.
      
      For older systems, such as ubuntu:16.04 (build failure reported by Jin
      Yao) debian:8, and for the current flagship RHEL distro, RHEL7, the
      build will fail as test-all.bin (without test-reallocarray.c included)
      passes but reallocarray() isn't present, making the build fail with:
      
          CC       /tmp/build/perf/libbpf.o
          MKDIR    /tmp/build/perf/fs/
          CC       /tmp/build/perf/fs/tracing_path.o
          LD       /tmp/build/perf/fd/libapi-in.o
          CC       /tmp/build/perf/bpf.o
        libbpf.c: In function 'bpf_object__add_program':
        libbpf.c:367:10: error: implicit declaration of function 'reallocarray' [-Werror=implicit-function-declaration]
          progs = reallocarray(progs, nr_progs + 1, sizeof(progs[0]));
                  ^
        libbpf.c:367:2: error: nested extern declaration of 'reallocarray' [-Werror=nested-externs]
          progs = reallocarray(progs, nr_progs + 1, sizeof(progs[0]));
          ^
        libbpf.c:367:8: error: assignment makes pointer from integer without a cast [-Werror=int-conversion]
          progs = reallocarray(progs, nr_progs + 1, sizeof(progs[0]));
                ^
        libbpf.c: In function 'bpf_object__elf_collect':
        libbpf.c:887:10: error: assignment makes pointer from integer without a cast [-Werror=int-conversion]
            reloc = reallocarray(reloc, nr_reloc,
                  ^
        libbpf.c: In function 'bpf_program__reloc_text':
        libbpf.c:1394:12: error: assignment makes pointer from integer without a cast [-Werror=int-conversion]
           new_insn = reallocarray(prog->insns, new_cnt, sizeof(*insn));
                    ^
          CC       /tmp/build/perf/nlattr.o
      
      Even with:
      
        $ grep reallocarray /tmp/build/perf/FEATURE-DUMP
        feature-reallocarray=1
        $
      
      Which ubuntu:16.04.5 LTS doesn't have:
      
        perfbuilder@38a153a1bba8:/$ head -2 /etc/os-release
        NAME="Ubuntu"
        VERSION="16.04.5 LTS (Xenial Xerus)"
        perfbuilder@38a153a1bba8:/$ find /usr/include/ -name "*.h" | xargs grep -w reallocarray
        perfbuilder@38a153a1bba8:/$
      
      Fix it by including it to test-all.c, which ends up forcing the
      individual tests to be triggered and for the build process to notice
      that indeed reallocarray() is not there:
      
        perfbuilder@38a153a1bba8:/$ cat /tmp/build/perf/feature/test-all.make.output
        In file included from test-all.c:178:0:
        test-reallocarray.c: In function 'main_test_reallocarray':
        test-reallocarray.c:7:11: error: implicit declaration of function 'reallocarray' [-Werror=implicit-function-declaration]
          return !!reallocarray(NULL, 1, 1);
                   ^
        cc1: all warnings being treated as errors
        perfbuilder@38a153a1bba8:/$
      
      That is the only test that is failing on Ubuntu 16.03.5 LTS, so all
      tests are forced:
      
        perfbuilder@38a153a1bba8:/tmp/build/perf/feature$ ls -lSr *.make.output
        <SNIP successful tests>
        -rw-r--r--. 1 perfbuilder perfbuilder   0 Feb 14 15:00 test-dwarf.make.output
        -rw-r--r--. 1 perfbuilder perfbuilder   0 Feb 14 14:16 test-cplus-demangle.make.output
        -rw-r--r--. 1 perfbuilder perfbuilder   0 Feb 14 15:00 test-bpf.make.output
        -rw-r--r--. 1 perfbuilder perfbuilder   0 Feb 14 15:00 test-backtrace.make.output
        -rw-r--r--. 1 perfbuilder perfbuilder 104 Feb 14 15:00 test-bionic.make.output
        -rw-r--r--. 1 perfbuilder perfbuilder 107 Feb 14 15:00 test-libunwind-x86.make.output
        -rw-r--r--. 1 perfbuilder perfbuilder 115 Feb 14 15:00 test-libunwind-aarch64.make.output
        -rw-r--r--. 1 perfbuilder perfbuilder 122 Feb 14 15:00 test-libbabeltrace.make.output
        -rw-r--r--. 1 perfbuilder perfbuilder 254 Feb 14 15:00 test-reallocarray.make.output
        -rw-r--r--. 1 perfbuilder perfbuilder 312 Feb 14 15:00 test-all.make.output
        perfbuilder@38a153a1bba8:/tmp/build/perf/feature$
      
      And that reallocarray() one shows:
      
        perfbuilder@38a153a1bba8:/tmp/build/perf/feature$ cat test-reallocarray.make.output
        test-reallocarray.c: In function 'main':
        test-reallocarray.c:7:11: error: implicit declaration of function 'reallocarray' [-Werror=implicit-function-declaration]
          return !!reallocarray(NULL, 1, 1);
                   ^
        cc1: all warnings being treated as errors
        perfbuilder@38a153a1bba8:/tmp/build/perf/feature$
      
      Which now generates the expected result:
      
        perfbuilder@38a153a1bba8:~$ grep reallocarray /tmp/build/perf/FEATURE-DUMP
        feature-reallocarray=0
        perfbuilder@38a153a1bba8:~$
      
      The fallback mechanism kicks in and libbpf and perf are again buildable
      in systems without reallocarray():
      
        $ cat tools/include/tools/libc_compat.h
        // SPDX-License-Identifier: (LGPL-2.0+ OR BSD-2-Clause)
        /* Copyright (C) 2018 Netronome Systems, Inc. */
      
        #ifndef __TOOLS_LIBC_COMPAT_H
        #define __TOOLS_LIBC_COMPAT_H
      
        #include <stdlib.h>
        #include <linux/overflow.h>
      
        #ifdef COMPAT_NEED_REALLOCARRAY
        static inline void *reallocarray(void *ptr, size_t nmemb, size_t size)
        {
      	  size_t bytes;
      
      	  if (unlikely(check_mul_overflow(nmemb, size, &bytes)))
      		  return NULL;
      	  return realloc(ptr, bytes);
        }
        #endif
        #endif
        $
      Reported-by: default avatarJin Yao <yao.jin@linux.intel.com>
      Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Alexei Starovoitov <ast@fb.com>
      Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com>
      Cc: Daniel Borkmann <daniel@iogearbox.net>
      Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Song Liu <songliubraving@fb.com>
      Cc: Yonghong Song <yhs@fb.com>
      Fixes: 531b014e ("tools: bpf: make use of reallocarray")
      Link: https://lkml.kernel.org/n/tip-aonqku8axii8rxki5g11w40b@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      a96c03e8
    • Arnaldo Carvalho de Melo's avatar
      perf unwind: Do not put libunwind-{x86,aarch64} in FEATURE_TESTS_BASIC · 5c4d7c82
      Arnaldo Carvalho de Melo authored
      As it is not normally available on x86_64 not being tested on test-all.c
      but being in FEATURE_TESTS_BASIC ends up implying that those features
      are present, which leads to trying to link with those libraries and a
      build failure now that test-all.c is finally again building
      successfully:
      
        /usr/bin/ld: cannot find -lunwind-x86
        /usr/bin/ld: cannot find -lunwind-aarch64
        collect2: error: ld returned 1 exit status
        make[3]: *** [Makefile:199: /tmp/build/perf/plugin_jbd2.so] Error 1
        make[3]: *** Waiting for unfinished jobs....
        /usr/bin/ld: cannot find -lunwind-x86
        /usr/bin/ld: cannot find -lunwind-aarch64
      
      So remove those features from there and explicitely test them.
      
      And then move this patch to just before the last one that allows this to
      be exposed, so that we keep the tree bisectable.
      
      With all this in place we get, at this point:
      
        $ ldd /tmp/build/perf/feature/test-libunwind.bin
      	linux-vdso.so.1 (0x00007fffa09c6000)
      	libunwind-x86_64.so.8 => /lib64/libunwind-x86_64.so.8 (0x00007fbcf4451000)
      	libunwind.so.8 => /lib64/libunwind.so.8 (0x00007fbcf4435000)
      	liblzma.so.5 => /lib64/liblzma.so.5 (0x00007fbcf440c000)
      	libelf.so.1 => /lib64/libelf.so.1 (0x00007fbcf43f2000)
      	libc.so.6 => /lib64/libc.so.6 (0x00007fbcf422c000)
      	libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007fbcf4211000)
      	/lib64/ld-linux-x86-64.so.2 (0x00007fbcf4491000)
      	libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fbcf41ed000)
      	libz.so.1 => /lib64/libz.so.1 (0x00007fbcf41d3000)
        $ cat /tmp/build/perf/feature/test-libunwind-x86.make.output
        test-libunwind-x86.c:2:10: fatal error: libunwind-x86.h: No such file or directory
         #include <libunwind-x86.h>
                  ^~~~~~~~~~~~~~~~~
        compilation terminated.
        $ cat /tmp/build/perf/feature/test-libunwind-aarch64.make.output
        test-libunwind-aarch64.c:2:10: fatal error: libunwind-aarch64.h: No such file or directory
        #include <libunwind-aarch64.h>
                 ^~~~~~~~~~~~~~~~~~~~~
        compilation terminated.
        $
        $ ldd ~/bin/perf | grep unwind
      	libunwind-x86_64.so.8 => /lib64/libunwind-x86_64.so.8 (0x00007f5ceb24b000)
      	libunwind.so.8 => /lib64/libunwind.so.8 (0x00007f5ceb22f000)
        $
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: He Kuang <hekuang@huawei.com>
      Cc: Jean Pihet <jean.pihet@linaro.org>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Wang Nan <wangnan0@huawei.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Link: https://lkml.kernel.org/n/tip-vs6kwqsvwk7oxhs6z9mq87pp@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      5c4d7c82
    • Arnaldo Carvalho de Melo's avatar
      perf coresight: Do not test for libopencsd by default · 1c3b28fd
      Arnaldo Carvalho de Melo authored
      Since it is not yet that generally available, avoid testing for the
      presence of libcoresight in the fast path test-all.bin feature test.
      
        # dnf search opencsd
        No matches found.
        # dnf search OpenCSD
        No matches found.
        # cat /etc/fedora-release
        Fedora release 29 (Twenty Nine)
        #
      
      I.e. right now, in my system test-all.bin is failing all the time since
      Fedora29 doesn't have libopencsd available:
      
        $ cat /tmp/build/perf/feature/test-all.make.output
        In file included from test-all.c:174:
        test-libopencsd.c:2:10: fatal error: opencsd/c_api/opencsd_c_api.h: No such file or directory
         #include <opencsd/c_api/opencsd_c_api.h>
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        compilation terminated.
      
      See:
      
        6ab2b762 ("perf build: Disable libbabeltrace check by default")
      
      For the rationale, as soon as libopencsd becomes more generally packaged
      and available, we do the same thing we did with babeltrace, enabling it
      by default, as done in:
      
        24787afb ("perf tools: Enable LIBBABELTRACE by default")
      
      For now, to explicitely ask for opencsd, make sure you have it installed
      and use:
      
         make -C tools/perf CORESIGHT=1
      
      The feature test output will be there as an empty file:
      
        $ ls -la /tmp/build/perf/feature/test-libopencsd.make.output
      
      Because the binary used for the feature check was successfully built:
      
        $ ls -la /tmp/build/perf/feature/test-libopencsd.bin
        -rwxrwxr-x. 1 acme acme 18336 Feb 12 14:49 /tmp/build/perf/feature/test-libopencsd.bin
        $ ldd /tmp/build/perf/feature/test-libopencsd.bin
      	linux-vdso.so.1 (0x00007fffe18cc000)
      	libopencsd_c_api.so.0 => /lib64/libopencsd_c_api.so.0 (0x00007fb8e67f6000)
      	libopencsd.so.0 => /lib64/libopencsd.so.0 (0x00007fb8e676f000)
      	libc.so.6 => /lib64/libc.so.6 (0x00007fb8e65a9000)
      	libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007fb8e6411000)
      	libm.so.6 => /lib64/libm.so.6 (0x00007fb8e628d000)
      	libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007fb8e6272000)
      	/lib64/ld-linux-x86-64.so.2 (0x00007fb8e6828000)
        $
      
      And the resulting perf binary will be linked with it:
      
        -rw-rw-r--. 1 acme acme 0 Feb 12 14:49 /tmp/build/perf/feature/test-libopencsd.make.output
        $ ldd ~/bin/perf | grep opencsd
      	libopencsd_c_api.so.0 => /lib64/libopencsd_c_api.so.0 (0x00007fd43097f000)
      	libopencsd.so.0 => /lib64/libopencsd.so.0 (0x00007fd4308f8000)
        $
      
      To make sure this gets built before pushing things upstream I have a
      ubuntu:19.04-x-arm64 container that has:
      
        [root@quaco x-arm64]# grep CORESIGHT Dockerfile
        ENV EXTRA_MAKE_ARGS=CORESIGHT=1
        [root@quaco x-arm64]#
      
      So that I always build with libopencsd before pushing things upstream.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Kim Phillips <kim.phillips@arm.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
      Cc: Mike Leach <mike.leach@arm.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
      Link: https://lkml.kernel.org/n/tip-20vyy39jw9jgrijesi30fgox@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      1c3b28fd
    • Arnaldo Carvalho de Melo's avatar
      perf trace: Filter out gnome-terminal* parent · ca2da70c
      Arnaldo Carvalho de Melo authored
      Just like it does with 'sshd', to reduce the feedback loop when doing
      system wide tracing on on a gnome GUI.
      
      Need to figure out how to auto-filter the calls to other UI components
      tho.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Wang Nan <wangnan0@huawei.com>
      Link: https://lkml.kernel.org/n/tip-rjopq5y92itgokppdhe8sc6z@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      ca2da70c
    • Arnaldo Carvalho de Melo's avatar
      tools build: Add -lrt to FEATURE_CHECK_LDFLAGS-libaio · aa8f9c51
      Arnaldo Carvalho de Melo authored
      Since we need it to resolve the AIO symbols, otherwise we fail with:
      
        $ cat /tmp/build/perf/feature/test-all.make.output
        /usr/bin/ld: /tmp/ccEqrj36.o: undefined reference to symbol 'aio_return64@@GLIBC_2.2.5'
        /usr/bin/ld: //usr/lib64/librt.so.1: error adding symbols: DSO missing from command line
        collect2: error: ld returned 1 exit status
        $
      
      When we added the aio support in 'perf record' only the test-libaio.bin
      target got the -lrt, i.e. the feature detection slow path. Fix it.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Fixes: 2a07d814 ("tools build feature: Check if libaio is available")
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      aa8f9c51
    • Arnaldo Carvalho de Melo's avatar
      perf beauty waitid options: Fix up prefix showing logic · 1da7e002
      Arnaldo Carvalho de Melo authored
      When introducing the possibility for selecting if the common prefix to
      options such as the waitid ones, i.e. all 'waitid' options start with
      'W', so, to make it make it more compact if configured to suppress it,
      'perf trace' will do so, other examples include mmap's PROT_ prefix for
      its 'prot' argument, etc, which, when showing the syscall argument name
      ends up producing duplicated info that clutters the screen, i.e.:
      
        # perf trace -e mmap --max-events 2 sleep 1
           0.000 ( 0.014 ms): sleep/20886 mmap(len: 112595, prot: PROT_READ, flags: MAP_PRIVATE, fd: 3) = 0x7f3e986d2000
           0.041 ( 0.005 ms): sleep/20886 mmap(len: 8192, prot: PROT_READ|PROT_WRITE, flags: MAP_PRIVATE|MAP_ANONYMOUS) = 0x7f3e986d0000
        #
      
      So it is possible to suppress that and make it more compact by having
      this in your ~/.perfconfig:
      
        # cat ~/.perfconfig
        [trace]
      	show_prefix = no
        #
      
        # perf trace -e mmap --max-events 2 sleep 1
           0.000 ( 0.014 ms): sleep/8009 mmap(len: 112595, prot: READ, flags: PRIVATE, fd: 3) = 0x7ff2373de000
           0.040 ( 0.005 ms): sleep/8009 mmap(len: 8192, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS) = 0x7ff2373dc000
        #
      
      To have it look more like strace's output, we instead want to suppress
      the arg name and show the prefix, so use:
      
        # cat ~/.perfconfig
        [trace]
      	show_prefix = yes
      	show_arg_names = no
        #
        # perf trace -e mmap --max-events 2 sleep 1
           0.000 ( 0.006 ms): sleep/15513 mmap(NULL, 112595, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f7a9b6d3000
           0.020 ( 0.002 ms): sleep/15513 mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS) = 0x7f7a9b6d1000
        #
      
      When this logic was introduced a bug came with it when processing the
      waitid 'option' arg that ended up expecting 3 strings when just two were
      being provided, fix it.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Wang Nan <wangnan0@huawei.com>
      Fixes: c65c83ff ("perf trace: Allow asking for not suppressing common string prefixes")
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      1da7e002
    • Arnaldo Carvalho de Melo's avatar
      perf trace: Check if the 'fd' is negative when mapping it to pathname · 05107486
      Arnaldo Carvalho de Melo authored
      We were crashing when processing a negative fd:
      
        Program received signal SIGSEGV, Segmentation fault.
        0x0000000000609bbf in syscall_arg__scnprintf_ioctl_cmd (bf=0x1172eca "", size=2038, arg=0x7fffffff8360) at trace/beauty/ioctl.c:182
        182			if (file->dev_maj == USB_DEVICE_MAJOR)
        Missing separate debuginfos, use: dnf debuginfo-install bzip2-libs-1.0.6-28.fc29.x86_64 elfutils-libelf-0.174-5.fc29.x86_64 elfutils-libs-0.174-5.fc29.x86_64 glib2-2.58.3-1.fc29.x86_64 libbabeltrace-1.5.6-1.fc29.x86_64 libunwind-1.2.1-6.fc29.x86_64 libuuid-2.32.1-1.fc29.x86_64 libxcrypt-4.4.3-2.fc29.x86_64 numactl-libs-2.0.12-1.fc29.x86_64 openssl-libs-1.1.1a-1.fc29.x86_64 pcre-8.42-6.fc29.x86_64 perl-libs-5.28.1-427.fc29.x86_64 popt-1.16-15.fc29.x86_64 python2-libs-2.7.15-11.fc29.x86_64 slang-2.3.2-4.fc29.x86_64 xz-libs-5.2.4-3.fc29.x86_64
        (gdb) bt
        #0  0x0000000000609bbf in syscall_arg__scnprintf_ioctl_cmd (bf=0x1172eca "", size=2038, arg=0x7fffffff8360) at trace/beauty/ioctl.c:182
        #1  0x000000000048e295 in syscall__scnprintf_val (sc=0x123b500, bf=0x1172eca "", size=2038, arg=0x7fffffff8360, val=21519)
            at builtin-trace.c:1594
        #2  0x000000000048e60d in syscall__scnprintf_args (sc=0x123b500, bf=0x1172ec6 "-1, ", size=2042, args=0x7ffff6a7c034 "\377\377\377\377",
            augmented_args=0x7ffff6a7c064, augmented_args_size=4, trace=0x7fffffffa8d0, thread=0x1175cd0) at builtin-trace.c:1661
        #3  0x000000000048f04e in trace__sys_enter (trace=0x7fffffffa8d0, evsel=0xb260b0, event=0x7ffff6a7bfe8, sample=0x7fffffff84f0)
            at builtin-trace.c:1880
        #4  0x00000000004915a4 in trace__handle_event (trace=0x7fffffffa8d0, event=0x7ffff6a7bfe8, sample=0x7fffffff84f0) at builtin-trace.c:2590
        #5  0x0000000000491eed in __trace__deliver_event (trace=0x7fffffffa8d0, event=0x7ffff6a7bfe8) at builtin-trace.c:2818
        #6  0x0000000000492030 in trace__deliver_event (trace=0x7fffffffa8d0, event=0x7ffff6a7bfe8) at builtin-trace.c:2845
        #7  0x0000000000492896 in trace__run (trace=0x7fffffffa8d0, argc=0, argv=0x7fffffffdb58) at builtin-trace.c:3040
        #8  0x000000000049603a in cmd_trace (argc=0, argv=0x7fffffffdb58) at builtin-trace.c:3952
        #9  0x00000000004d5103 in main (argc=1, argv=0x7fffffffdb58) at perf.c:474
        (gdb) p fd
        $1 = -1
        (gdb) p file
        $7 = (struct file *) 0xfffffffffffffff0
        (gdb) p ((struct thread_trace *)arg->thread)->files.table + fd
        $8 = (struct file *) 0xfffffffffffffff0
        (gdb)
      
      Check for that and return NULL instead.
      
      This problem was introduced recently, the other codepaths leading to
      thread_trace__files_entry() check for negative fds, like thread__fd_path(),
      but we need to do it at thread_trace__files_entry() as more users are now
      calling it directly.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Wang Nan <wangnan0@huawei.com>
      Fixes: 2d473389 ("perf trace beauty: Export function to get the files for a thread")
      Link: https://lkml.kernel.org/n/tip-oq7bvaaf07gsd4yqty3107u2@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      05107486
    • Arnaldo Carvalho de Melo's avatar
      perf beauty ioctl cmd: The 'fd' arg is signed · e1be4a5c
      Arnaldo Carvalho de Melo authored
      It is possible to pass a negative number as the fd and that has to be
      handled, so stop using 'unsigned int fd' in the ioctl syscall 'cmd'
      beautifier.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Wang Nan <wangnan0@huawei.com>
      Link: https://lkml.kernel.org/n/tip-b7qwa0l19dswa09h3s41akfu@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      e1be4a5c
    • Arnaldo Carvalho de Melo's avatar
      tools feature: Undef _GNU_SOURCE at the end of feature tests · 0ec572f0
      Arnaldo Carvalho de Melo authored
      Since we get all the tests in a single .c file for a first test,
      tools/build/feature/test-all.c, if individual tests set that define and
      fail to undef it at its end, then it the test-all.c build will fail due
      to defining _GNU_SOURCE multiple times, getting us to the slow path,
      so undef it at the end in tests that define it.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Link: https://lkml.kernel.org/n/tip-w6s00jfo1xabgphzczadl59b@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      0ec572f0
    • Song Liu's avatar
      perf utils: Silence "Couldn't synthesize bpf events" warning for EPERM · 39f4a913
      Song Liu authored
      Synthesizing BPF events is only supported for root. Silent warning msg
      when non-root user runs perf-record.
      Reported-by: default avatarDavid Carrillo-Cisneros <davidca@fb.com>
      Signed-off-by: default avatarSong Liu <songliubraving@fb.com>
      Tested-by: default avatarDavid Carrillo-Cisneros <davidca@fb.com>
      Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
      Cc: kernel-team@fb.com
      Link: http://lkml.kernel.org/r/20190204193140.719740-1-songliubraving@fb.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      39f4a913
    • Paul Clarke's avatar
      perf vendor events power9: General metrics · 33937e59
      Paul Clarke authored
      Descriptions of metrics for POWER9 processors can be found in the
      "POWER9 Performance Monitor Unit User’s Guide", which is currently
      available on the "IBM Portal for OpenPOWER"
      (https://www-355.ibm.com/systems/power/openpower/welcome.xhtml) at
      https://www-355.ibm.com/systems/power/openpower/posting.xhtml?postingId=4948CDE1963C9BCA852582F800718190
      
      This patch is for metric groups:
      - general
      
      and other metrics not in a metric group.
      Signed-off-by: default avatarPaul Clarke <pc@us.ibm.com>
      Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
      Cc: Carl Love <cel@us.ibm.com>
      Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
      Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
      Cc: linuxppc-dev@ozlabs.org
      Link: http://lkml.kernel.org/r/20190209181429.23950-5-pc@us.ibm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      33937e59
    • Paul Clarke's avatar
      perf vendor events power9: Branch_prediction, instruction_stats, latency,... · a4d83272
      Paul Clarke authored
      perf vendor events power9: Branch_prediction, instruction_stats, latency, lsu_rejects, memory, prefetch & translation metrics
      
      Descriptions of metrics for POWER9 processors can be found in the
      "POWER9 Performance Monitor Unit User’s Guide", which is currently
      available on the "IBM Portal for OpenPOWER"
      (https://www-355.ibm.com/systems/power/openpower/welcome.xhtml) at
      https://www-355.ibm.com/systems/power/openpower/posting.xhtml?postingId=4948CDE1963C9BCA852582F800718190
      
      This patch is for metric groups:
      - branch_prediction
      - instruction_stats_percent_per_ref
      - latency
      - lsu_rejects
      - memory
      - prefetch
      - translation
      
      Plus, some whitespace changes.
      Signed-off-by: default avatarPaul Clarke <pc@us.ibm.com>
      Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
      Cc: Carl Love <cel@us.ibm.com>
      Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
      Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
      Cc: linuxppc-dev@ozlabs.org
      Link: http://lkml.kernel.org/r/20190209181429.23950-4-pc@us.ibm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      a4d83272
    • Paul Clarke's avatar
      perf vendor events power9: Dl1_reloads, instruction_misses, l[23]_stats & pteg_reloads metrics · 0133491d
      Paul Clarke authored
      Descriptions of metrics for POWER9 processors can be found in the
      "POWER9 Performance Monitor Unit User’s Guide", which is currently
      available on the "IBM Portal for OpenPOWER"
      (https://www-355.ibm.com/systems/power/openpower/welcome.xhtml) at
      https://www-355.ibm.com/systems/power/openpower/posting.xhtml?postingId=4948CDE1963C9BCA852582F800718190
      
      This patch is for metric groups:
      - dl1_reloads_percent_per_inst
      - dl1_reloads_percent_per_ref
      - instruction_misses_percent_per_inst
      - l2_stats
      - l3_stats
      - pteg_reloads_percent_per_inst
      - pteg_reloads_percent_per_ref
      Signed-off-by: default avatarPaul Clarke <pc@us.ibm.com>
      Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
      Cc: Carl Love <cel@us.ibm.com>
      Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
      Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
      Cc: linuxppc-dev@ozlabs.org
      Link: http://lkml.kernel.org/r/20190209181429.23950-3-pc@us.ibm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      0133491d
    • Paul Clarke's avatar
      perf vendor events power9: Cpi_breakdown & estimated_dcache_miss_cpi metrics · 7f3cf5ac
      Paul Clarke authored
      Descriptions of metrics for POWER9 processors can be found in the
      "POWER9 Performance Monitor Unit User’s Guide", which is currently
      available on the "IBM Portal for OpenPOWER"
      (https://www-355.ibm.com/systems/power/openpower/welcome.xhtml) at
      https://www-355.ibm.com/systems/power/openpower/posting.xhtml?postingId=4948CDE1963C9BCA852582F800718190
      
      This patch is for metric groups:
      - cpi_breakdown
      - estimated_dcache_miss_cpi
      Signed-off-by: default avatarPaul Clarke <pc@us.ibm.com>
      Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
      Cc: Carl Love <cel@us.ibm.com>
      Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
      Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
      Cc: linuxppc-dev@ozlabs.org
      Link: http://lkml.kernel.org/r/20190209181429.23950-2-pc@us.ibm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      7f3cf5ac
    • Paul Clarke's avatar
      perf vendor events power8: Translaton & general metrics · 72ab5020
      Paul Clarke authored
      POWER8 metrics are not well publicized.
      
      Some are here:
      
        https://www.ibm.com/support/knowledgecenter/en/SSFK5S_2.2.0/com.ibm.cluster.pedev.v2r2.pedev100.doc/bl7ug_derivedmetricspower8.htm
      
      This patch is for metric groups:
      - translation
      - general
      
      and other metrics not in a metric group.
      Signed-off-by: default avatarPaul Clarke <pc@us.ibm.com>
      Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
      Cc: Carl Love <cel@us.ibm.com>
      Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
      Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
      Link: http://lkml.kernel.org/r/20190207175314.31813-5-pc@us.ibm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      72ab5020
    • Paul Clarke's avatar
      perf vendor events power8: Branch_prediction, latency, bus_stats,... · 69ba708f
      Paul Clarke authored
      perf vendor events power8: Branch_prediction, latency, bus_stats, instruction_mix & instruction_stats metrics
      
      POWER8 metrics are not well publicized.  Some are here:
      
        https://www.ibm.com/support/knowledgecenter/en/SSFK5S_2.2.0/com.ibm.cluster.pedev.v2r2.pedev100.doc/bl7ug_derivedmetricspower8.htm
      
      This patch is for metric groups:
      - branch_prediction
      - latency
      - bus_stats
      - instruction_mix
      - instruction_stats_percent_per_ref
      Signed-off-by: default avatarPaul Clarke <pc@us.ibm.com>
      Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
      Cc: Carl Love <cel@us.ibm.com>
      Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
      Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
      Link: http://lkml.kernel.org/r/20190207175314.31813-4-pc@us.ibm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      69ba708f
    • Paul Clarke's avatar
      perf vendor events power8: Dl1_reload, instruction_misses, l2_stats,... · ffe18505
      Paul Clarke authored
      perf vendor events power8: Dl1_reload, instruction_misses, l2_stats, lsu_rejects, memory & pteg_reloads metrics
      
      POWER8 metrics are not well publicized.
      
      Some are here:
      
        https://www.ibm.com/support/knowledgecenter/en/SSFK5S_2.2.0/com.ibm.cluster.pedev.v2r2.pedev100.doc/bl7ug_derivedmetricspower8.htm
      
      This patch is for metric groups:
      - dl1_reloads_percent_per_inst
      - dl1_reloads_percent_per_ref
      - instruction_misses_percent_per_inst
      - l2_stats
      - lsu_rejects
      - memory
      - pteg_reloads_percent_per_inst
      - pteg_reloads_percent_per_ref
      Signed-off-by: default avatarPaul Clarke <pc@us.ibm.com>
      Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
      Cc: Carl Love <cel@us.ibm.com>
      Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
      Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
      Link: http://lkml.kernel.org/r/20190207175314.31813-3-pc@us.ibm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      ffe18505
    • Paul Clarke's avatar
      perf vendor events power8: Cpi_breakdown & estimated_dcache_miss_cpi metrics · dd81eafa
      Paul Clarke authored
      POWER8 metrics are not well publicized.
      
      Some are here:
      
        https://www.ibm.com/support/knowledgecenter/en/SSFK5S_2.2.0/com.ibm.cluster.pedev.v2r2.pedev100.doc/bl7ug_derivedmetricspower8.htm
      
      This patch is for metric groups:
      - cpi_breakdown
      - estimated_dcache_miss_cpi
      Signed-off-by: default avatarPaul Clarke <pc@us.ibm.com>
      Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
      Cc: Carl Love <cel@us.ibm.com>
      Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
      Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
      Link: http://lkml.kernel.org/r/20190207175314.31813-2-pc@us.ibm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      dd81eafa
    • Thomas Richter's avatar
      perf report: Add s390 diagnosic sampling descriptor size · 2187d87e
      Thomas Richter authored
      On IBM z13 machine types 2964 and 2965 the descriptor
      sizes for sampling and diagnostic sampling entries
      might be missing in the trailer entry and are set to zero.
      
      This leads to a perf report failure when processing diagnostic
      sampling entries.
      
      This patch adds missing descriptor sizes when the trailer entry
      contains zero for these fields.
      
      Output before:
        [root@s38lp82 perf]#  ./perf report --stdio | fgrep Samples
        0xabbf0 [0x8]: failed to process type: 68
        Error:
        failed to process sample
        [root@s38lp82 perf]#
      
      Output after:
        [root@s38lp82 perf]#  ./perf report --stdio | fgrep Samples
        # Total Lost Samples: 0
        # Samples: 3K of event 'SF_CYCLES_BASIC_DIAG'
        # Samples: 162  of event 'CF_DIAG'
        [root@s38lp82 perf]#
      
      Fixes: 2b1444f2 ("perf report: Add raw report support for s390 auxiliary trace")
      Signed-off-by: default avatarThomas Richter <tmricht@linux.ibm.com>
      Reviewed-by: default avatarHendrik Brueckner <brueckner@linux.ibm.com>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Link: http://lkml.kernel.org/r/20190211100627.85714-1-tmricht@linux.ibm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      2187d87e
    • Mathieu Poirier's avatar
      perf cs-etm: Add proper header file for symbols · 859dcf64
      Mathieu Poirier authored
      After 'commit e22c1c75 ("perf thread: Don't include symbol.h,
      symbol_conf.h is enough")'
      
      Compilation of the perf tools is broken when using the functionality
      provided by the openCSD library:
      
      [...]
      
      ...                       timerfd: [ on  ]
      ...                  sched_getcpu: [ on  ]
      ...                           sdt: [ OFF ]
      ...                         setns: [ on  ]
      ...                    libopencsd: [ on  ]
      
      [...]
      
        CC       util/arm-spe.o
        CC       util/arm-spe-pkt-decoder.o
        CC       util/s390-cpumsf.o
        CC       util/cs-etm.o
        CC       util/parse-branch-options.o
      util/cs-etm.c: In function ‘cs_etm__mem_access’:
      util/cs-etm.c:297:24: error: storage size of ‘al’ isn’t known
        struct  addr_location al;
      
      And rightly so since file cs-etm.c doesn't include symbol.h, something
      that is rectified in this patch.
      Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Suzuki K Poulouse <suzuki.poulose@arm.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Link: http://lkml.kernel.org/r/20190208223543.31836-1-mathieu.poirier@linaro.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      859dcf64
  2. 11 Feb, 2019 7 commits
  3. 09 Feb, 2019 2 commits
    • Ingo Molnar's avatar
      Merge tag 'perf-core-for-mingo-5.1-20190206' of... · 6854daa0
      Ingo Molnar authored
      Merge tag 'perf-core-for-mingo-5.1-20190206' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
      
      Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
      
      Hardware tracing:
      
        Adrian Hunter:
      
        - Handle calls optimized into jumps to a different symbol
          in the thread stack routines used to process hardware traces (Adrian Hunter)
      
      Intel PT:
      
        Adrian Hunter:
      
        - Fix overlap calculation for padding.
      
        - Fix CYC timestamp calculation after OVF.
      
        - Packet splitting can only happen in 32-bit.
      
        - Add timestamp to auxtrace errors.
      
      ARM CoreSight:
      
        Leo Yan:
      
        - Add last instruction information in packet
      
        - Set sample flags for instruction range, exception and
          return packets and for a trace discontinuity.
      
        - Add exception number in exception packet
      
        - Change tuple from traceID-CPU# to traceID-metadata
      
        - Add traceID in packet
      
        Mathieu Poirier:
      
        - Add "sinks" group to PMU directory
      
        - Use event attributes to send sink information to kernel
      
        - Remove set_drv_config() API, no longer used.
      
      perf annotate:
      
        Jiri Olsa:
      
        - Delay symbol annotation to the resort phase, speeding up 'perf report'
          startup.
      
      perf record:
      
        Alexey Budankov:
      
        - Allow binding userspace buffers to NUMA nodes.
      
      Symbols:
      
        Adrian Hunter:
      
        - Fix calculating of symbol sizes when splitting kallsyms into
          maps for kcore processing.
      
      Vendor events:
      
        William Cohen:
      
        - Intel: Fix Load_Miss_Real_Latency on CLX
      
      Misc:
      
        Arnaldo Carvalho de Melo:
      
        - Streamline headers, removing includes when all that is needed are
          just forward declarations, fixup the fallout for cases where headers
          should have been explicitely included but were instead obtained
          indirectly, by sheer luck.
      
        - Add fallback versions for CPU_{OR,EQUAL}(), so that code using it
          continue to build on older systems where those were not yet introduced
          or in systems using some other libc than the GNU one where those
          helpers aren't present.
      
      Documentation:
      
        Changbin Du:
      
        - Add documentation for BPF event selection.
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      6854daa0
    • Ingo Molnar's avatar
      9821517a