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    SubjectRe: [GIT PULL 00/27] perf/core improvements and fixes

    * Arnaldo Carvalho de Melo <acme@kernel.org> wrote:

    > Hi Ingo,
    >
    > Please consider pulling,
    >
    > - Arnaldo
    >
    > Test results at the end of this message, as usual.
    >
    > The following changes since commit 9128d3ed9de3882c83b927eb553d5d44c84505f5:
    >
    > perf/x86/msr: Clean up the code (2018-01-06 12:18:40 +0100)
    >
    > are available in the Git repository at:
    >
    > git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo-4.16-20180110
    >
    > for you to fetch changes up to 5d64db2966e38bfd99114ecf0b54f97d33023dcd:
    >
    > tools headers: Synchronize kernel <-> tooling headers (2018-01-10 12:46:54 -0300)
    >
    > ----------------------------------------------------------------
    > perf/core improvements and fixes:
    >
    > - The 'perf test bpf' entry hooked a eBPF proggie to the
    > SyS_epoll_wait() kernel function and expected it to be hit when calling
    > the epoll_wait() libc wrapper, which changed recently, in systems such
    > as Fedora 27, with the glibc wrapper calling instead the epoll_pwait()
    > syscall, so switch to epoll_pwait() for both the kernel and libc
    > function, getting it to work both in old and new systems (Arnaldo Carvalho de Melo)
    >
    > - Beautify 'gettid' syscall result in 'perf trace', and in doing so
    > noticed that we need to handle namespaces in 'perf trace', will be
    > dealt with in follow up patches where we'll try to figure out if
    > the recent support for namespace in tools/perf/ can be used for this
    > purpose as well. (Arnaldo Carvalho de Melo)
    >
    > - Introduce 'perf report --mmaps' and 'perf report --tasks' to show
    > info present in 'perf.data' (Jiri Olsa, Arnaldo Carvalho de Melo)
    >
    > - Synchronize kernel <-> tooling headers wrt meltdown/spectre changes
    > (Arnaldo Carvalho de Melo)
    >
    > - Fix a wrong offset issue when using /proc/kcore (Jin Yao)
    >
    > - Fix bug that prevented annotating symbols in perf.data files
    > generated with 'perf record --branch-any' (Jin Yao)
    >
    > - Add infrastructure to record first and last sample time to the
    > perf.data file header, so that when processing all samples in
    > a 'perf record' session, such as when doing build-id processing,
    > or when specifically requesting that that info be recorded, use
    > that in 'perf report --time', that also got support for percent
    > slices in addition to absolute ones.
    >
    > I.e. now it is possible to ask for the samples in the 10%-20%
    > time slice of a perf.data file (Jin Yao)
    >
    > - Enable building with libbabeltrace by default (Jiri Olsa)
    >
    > - Display perf_event_attr::namespaces when duping the attributes
    > in verbose mode (Jiri Olsa)
    >
    > - Allocate context task_ctx_data for child event (Jiri Olsa)
    >
    > - Update comments for PERF_RECORD_ITRACE_START and PERF_RECORD_MISC_* (Jiri Olsa)
    >
    > - Add support for showing PERF_RECORD_LOST events in 'perf script' (Jiri Olsa)
    >
    > - Add 'perf report --stats' option to display quick statistics about
    > metadata events (PERF_RECORD_*) i.e. what we get at the end of 'perf
    > report -D' (Jiri Olsa)
    >
    > - Fix compile error with libunwind x86 (Wang Nan)
    >
    > Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    >
    > ----------------------------------------------------------------
    > Arnaldo Carvalho de Melo (6):
    > perf test bpf: Improve message about expected samples
    > perf test bpf: Use designated struct field initializers
    > perf test bpf: Hook on epoll_pwait()
    > perf trace: Beautify 'gettid' syscall result
    > perf report: Introduce --mmaps
    > tools headers: Synchronize kernel <-> tooling headers
    >
    > Jin Yao (8):
    > perf report: Fix a wrong offset issue when using /proc/kcore
    > perf report: Fix a no annotate browser displayed issue
    > perf header: Add infrastructure to record first and last sample time
    > perf record: Record the first and last sample time in the header
    > perf tools: Create function to parse time percent
    > perf tools: Create function to perform multiple time range checking
    > perf report: Support time percent and multiple time ranges
    > perf script: Support time percent and multiple time ranges
    >
    > Jiri Olsa (12):
    > perf tools: Enable LIBBABELTRACE by default
    > perf tools: Display perf_event_attr::namespaces debug info
    > perf: Allocate context task_ctx_data for child event
    > perf: Add sample_id to PERF_RECORD_ITRACE_START event comment
    > perf: Make perf_callchain function static
    > perf: Return empty callchain instead of NULL
    > perf: Update PERF_RECORD_MISC_* comment for perf_event_header::misc bit 13
    > perf script: Add support to display sample misc field
    > perf script: Add support to display lost events
    > perf tools: Make the tool's warning messages optional
    > perf report: Add --stats option to display quick data statistics
    > perf report: Add --tasks option to display monitored tasks
    >
    > Wang Nan (1):
    > perf tools: Fix compile error with libunwind x86
    >
    > include/uapi/linux/perf_event.h | 10 +-
    > kernel/events/callchain.c | 15 --
    > kernel/events/core.c | 54 +++--
    > kernel/events/internal.h | 4 -
    > tools/arch/x86/include/asm/cpufeatures.h | 4 +-
    > tools/arch/x86/include/asm/disabled-features.h | 8 +-
    > tools/include/uapi/linux/perf_event.h | 10 +-
    > tools/perf/Documentation/perf-record.txt | 3 +
    > tools/perf/Documentation/perf-report.txt | 37 ++-
    > tools/perf/Documentation/perf-script.txt | 39 +++-
    > tools/perf/Documentation/perf.data-file-format.txt | 4 +
    > tools/perf/Makefile.config | 2 +-
    > tools/perf/Makefile.perf | 2 +-
    > tools/perf/arch/x86/util/unwind-libunwind.c | 2 +-
    > tools/perf/builtin-record.c | 18 +-
    > tools/perf/builtin-report.c | 249 ++++++++++++++++++++-
    > tools/perf/builtin-script.c | 136 +++++++++--
    > tools/perf/builtin-trace.c | 1 +
    > tools/perf/tests/bpf-script-example.c | 4 +-
    > tools/perf/tests/bpf.c | 65 +++---
    > tools/perf/util/annotate.c | 3 +-
    > tools/perf/util/event.c | 8 +
    > tools/perf/util/event.h | 1 +
    > tools/perf/util/evlist.h | 2 +
    > tools/perf/util/evsel.c | 2 +
    > tools/perf/util/header.c | 60 +++++
    > tools/perf/util/header.h | 1 +
    > tools/perf/util/machine.c | 2 +-
    > tools/perf/util/map.c | 2 +-
    > tools/perf/util/session.c | 6 +-
    > tools/perf/util/sort.c | 16 +-
    > tools/perf/util/srcline.c | 9 +-
    > tools/perf/util/srcline.h | 5 +-
    > tools/perf/util/time-utils.c | 233 ++++++++++++++++++-
    > tools/perf/util/time-utils.h | 6 +
    > tools/perf/util/tool.h | 1 +
    > 36 files changed, 884 insertions(+), 140 deletions(-)

    Pulled, thanks a lot Arnaldo!

    Ingo

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