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Date: Thu, 11 Jan 2018 06:54:09 +0100
From: Ingo Molnar <mingo@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
Adrian Hunter <adrian.hunter@...el.com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Andi Kleen <ak@...ux.intel.com>,
David Ahern <dsahern@...il.com>,
Jin Yao <yao.jin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>, Kan Liang <kan.liang@...el.com>,
Namhyung Kim <namhyung@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Thomas Gleixner <tglx@...utronix.de>,
Wang Nan <wangnan0@...wei.com>,
Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [GIT PULL 00/27] perf/core improvements and fixes
* Arnaldo Carvalho de Melo <acme@...nel.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@...hat.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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