[GIT PULL 00/11] perf/urgent fixes

From: Arnaldo Carvalho de Melo
Date: Tue Aug 09 2016 - 12:02:19 EST


Hi Ingo,

Please consider pulling,

- Arnaldo

Build test stats:

[root@jouet ~]# time dm
1: alpine:3.4: Ok
2: android-ndk:r12b: Ok
3: archlinux:latest: Ok
4: centos:5: Ok
5: centos:6: Ok
6: centos:7: Ok
7: debian:7: Ok
8: debian:8: Ok
9: debian:experimental: Ok
10: fedora:20: Ok
11: fedora:21: Ok
12: fedora:22: Ok
13: fedora:23: Ok
14: fedora:24: Ok
15: fedora:rawhide: Ok
16: mageia:5: Ok
17: opensuse:13.2: Ok
18: opensuse:42.1: Ok
19: ubuntu:14.04.4: Ok
20: ubuntu:15.10: Ok
21: ubuntu:16.04: Ok
22: ubuntu:16.04-x-arm64: Ok
23: ubuntu:16.04-x-armhf: Ok
24: ubuntu:16.04-x-powerpc64: Ok
25: ubuntu:16.04-x-powerpc64el: Ok
26: ubuntu:16.04-x-s390: Ok

real 16m44.470s

The following changes since commit f282f7a0ecc3e0b8fd8532a6c3e9401534cb907c:

Merge tag 'perf-core-for-mingo-20160803' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent (2016-08-04 11:02:38 +0200)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-urgent-for-mingo-20160809

for you to fetch changes up to 99e608b5954c9e1ebadbf9660b74697d9dfd9f20:

perf probe ppc64le: Fix probe location when using DWARF (2016-08-09 12:14:29 -0300)

----------------------------------------------------------------
perf/urgent fixes:

User visible fixes:

- Fix the lookup for a kernel module in 'perf probe', fixing for instance, the
erroneous return of "[raid10]" when looking for "[raid1]" (Konstantin Khlebnikov)

- Disable counters in a group before reading them in 'perf stat', to avoid skew (Mark Rutland)

- Fix adding probes to function aliases in systems using kaslr (Masami Hiramatsu)

- Trip libtraceevent trace_seq buffers, removing unnecessary memory usage that could
bring a system using tracepoint events with 'perf top' to a crawl, as the trace_seq
buffers start at a whooping 4 KB, which is very rarely used in perf's usecases,
so realloc it to the really used space as a last measure after using libtraceevent
functions to format the fields of tracepoint events (Arnaldo Carvalho de Melo)

- Fix 'perf probe' location when using DWARF on ppc64le (Ravi Bangoria)

Improvement:

- Allow specifying signedness casts to a 'perf probe' variable, to shorten
the number of steps to see signed values that otherwise would always appear
as hex values (Naohiro Aota)

Documentation fixes:

- Add 'bpf-output' field to 'perf script' usage message (Brendan Gregg)

Infrastructure fixes:

- Sync kernel header files: cpufeatures.h, {disabled,required}-features.h,
bpf.h and vmx.h, so that we get a clean build, without warnings about files
being different from the kernel counterparts.

A verification of the need or desirability of changes in tools/ based on what
was done in the kernel changesets was made and documented in the respective
file sync changesets (Arnaldo Carvalho de Melo)

Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>

----------------------------------------------------------------
Arnaldo Carvalho de Melo (4):
perf hists: Trim libtraceevent trace_seq buffers
tools: Sync cpufeatures.h and vmx.h with the kernel
toops: Sync tools/include/uapi/linux/bpf.h with the kernel
tools: Sync cpufeatures headers with the kernel

Brendan Gregg (1):
perf script: Add 'bpf-output' field to usage message

Konstantin Khlebnikov (1):
perf probe: Fix module name matching

Mark Rutland (1):
perf stat: Avoid skew when reading events

Masami Hiramatsu (1):
perf probe: Adjust map->reloc offset when finding kernel symbol from map

Naohiro Aota (1):
perf probe: Support signedness casting

Ravi Bangoria (2):
perf probe: Add function to post process kernel trace events
perf probe ppc64le: Fix probe location when using DWARF

tools/arch/x86/include/asm/cpufeatures.h | 9 +--
tools/arch/x86/include/asm/disabled-features.h | 2 +
tools/arch/x86/include/asm/required-features.h | 2 +
tools/arch/x86/include/uapi/asm/vmx.h | 4 +-
tools/include/uapi/linux/bpf.h | 86 +++++++++++++++++++++++++-
tools/perf/Documentation/perf-probe.txt | 10 ++-
tools/perf/Documentation/perf-script.txt | 4 +-
tools/perf/arch/powerpc/util/sym-handling.c | 27 ++++++--
tools/perf/builtin-script.c | 2 +-
tools/perf/builtin-stat.c | 31 +++++++---
tools/perf/util/probe-event.c | 60 +++++++++++-------
tools/perf/util/probe-event.h | 6 +-
tools/perf/util/probe-finder.c | 15 ++++-
tools/perf/util/sort.c | 6 +-
14 files changed, 210 insertions(+), 54 deletions(-)