Merge tag 'v4.9-rc3' into xtensa-for-next

Linux 4.9-rc3

Merge branch 'topic/error' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into regulator-fixed

Merge branch 'drm-tda998x-mali' into drm-tda998x-devel

Merge tag 'v4.8' into next

Sync up with mainline to bring in I2C host notify changes and other
updates.

Merge tag 'irqchip-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core

Merge the first drop of irqchip updates for 4.9 from Marc Zyngier:

- ACPI IORT core code
-

Merge tag 'irqchip-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core

Merge the first drop of irqchip updates for 4.9 from Marc Zyngier:

- ACPI IORT core code
- IORT support for the GICv3 ITS
- A few of GIC cleanups

show more ...

Merge remote-tracking branch 'airlied/drm-next' into drm-intel-next-queued

Backmerge because too many conflicts, and also we need to get at the
latest struct fence patches from Gustavo. Requested by

Merge remote-tracking branch 'airlied/drm-next' into drm-intel-next-queued

Backmerge because too many conflicts, and also we need to get at the
latest struct fence patches from Gustavo. Requested by Chris Wilson.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

show more ...

Merge branch 'linus' into x86/microcode, to pick up merge window changes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf updates from Ingo Molnar:
"With over 300 commits it's been a busy cycle - with most of the work

Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf updates from Ingo Molnar:
"With over 300 commits it's been a busy cycle - with most of the work
concentrated on the tooling side (as it should).

The main kernel side enhancements were:

- Add per event callchain limit: Recently we introduced a sysctl to
tune the max-stack for all events for which callchains were
requested:

$ sysctl kernel.perf_event_max_stack
kernel.perf_event_max_stack = 127

Now this patch introduces a way to configure this per event, i.e.
this becomes possible:

$ perf record -e sched:*/max-stack=2/ -e block:*/max-stack=10/ -a

allowing finer tuning of how much buffer space callchains use.

This uses an u16 from the reserved space at the end, leaving
another u16 for future use.

There has been interest in even finer tuning, namely to control the
max stack for kernel and userspace callchains separately. Further
discussion is needed, we may for instance use the remaining u16 for
that and when it is present, assume that the sample_max_stack
introduced in this patch applies for the kernel, and the u16 left
is used for limiting the userspace callchain (Arnaldo Carvalho de
Melo)

- Optimize AUX event (hardware assisted side-band event) delivery
(Kan Liang)

- Rework Intel family name macro usage (this is partially x86 arch
work) (Dave Hansen)

- Refine and fix Intel LBR support (David Carrillo-Cisneros)

- Add support for Intel 'TopDown' events (Andi Kleen)

- Intel uncore PMU driver fixes and enhancements (Kan Liang)

- ... other misc changes.

Here's an incomplete list of the tooling enhancements (but there's
much more, see the shortlog and the git log for details):

- Support cross unwinding, i.e. collecting '--call-graph dwarf'
perf.data files in one machine and then doing analysis in another
machine of a different hardware architecture. This enables, for
instance, to do:

$ perf record -a --call-graph dwarf

on a x86-32 or aarch64 system and then do 'perf report' on it on a
x86_64 workstation (He Kuang)

- Allow reading from a backward ring buffer (one setup via
sys_perf_event_open() with perf_event_attr.write_backward = 1)
(Wang Nan)

- Finish merging initial SDT (Statically Defined Traces) support, see
cset comments for details about how it all works (Masami Hiramatsu)

- Support attaching eBPF programs to tracepoints (Wang Nan)

- Add demangling of symbols in programs written in the Rust language
(David Tolnay)

- Add support for tracepoints in the python binding, including an
example, that sets up and parses sched:sched_switch events,
tools/perf/python/tracepoint.py (Jiri Olsa)

- Introduce --stdio-color to set up the color output mode selection
in 'annotate' and 'report', allowing emit color escape sequences
when redirecting the output of these tools (Arnaldo Carvalho de
Melo)

- Add 'callindent' option to 'perf script -F', to indent the Intel PT
call stack, making this output more ftrace-like (Adrian Hunter,
Andi Kleen)

- Allow dumping the object files generated by llvm when processing
eBPF scriptlet events (Wang Nan)

- Add stackcollapse.py script to help generating flame graphs (Paolo
Bonzini)

- Add --ldlat option to 'perf mem' to specify load latency for loads
event (e.g. cpu/mem-loads/ ) (Jiri Olsa)

- Tooling support for Intel TopDown counters, recently added to the
kernel (Andi Kleen)"

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (303 commits)
perf tests: Add is_printable_array test
perf tools: Make is_printable_array global
perf script python: Fix string vs byte array resolving
perf probe: Warn unmatched function filter correctly
perf cpu_map: Add more helpers
perf stat: Balance opening and reading events
tools: Copy linux/{hash,poison}.h and check for drift
perf tools: Remove include/linux/list.h from perf's MANIFEST
tools: Copy the bitops files accessed from the kernel and check for drift
Remove: kernel unistd*h files from perf's MANIFEST, not used
perf tools: Remove tools/perf/util/include/linux/const.h
perf tools: Remove tools/perf/util/include/asm/byteorder.h
perf tools: Add missing linux/compiler.h include to perf-sys.h
perf jit: Remove some no-op error handling
perf jit: Add missing curly braces
objtool: Initialize variable to silence old compiler
objtool: Add -I$(srctree)/tools/arch/$(ARCH)/include/uapi
perf record: Add --tail-synthesize option
perf session: Don't warn about out of order event if write_backward is used
perf tools: Enable overwrite settings
...

show more ...

Merge tag 'perf-core-for-mingo-20160623' 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:

New features

Merge tag 'perf-core-for-mingo-20160623' 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:

New features:

- Add 'callindent' option to 'perf script -F', to indent the Intel PT
call stack, making this output more ftrace-like (Adrian Hunter, Andi Kleen)

User visible changes:

- Enlarge 'pid' column width, to cope with large pids (Jiri Olsa)

Infrastructure changes:

- Fix cross platform unwind (He Kuang)

- Make destructors accept NULL, behaving like free() (Arnaldo Carvalho de Melo)

- Remove reference to perl interpreted in the recently added 'perf script'
stackcollapse python script (Arnaldo Carvalho de Melo)

- Rename CLASS__for_each() macros to CLASS__for_each_entry(), to use the
list_for_each_entry() semantics, as most of these class specific loop helpers
are list_for_each_entry*() wrappers (Arnaldo Carvalho de Melo)

- Expose the hist_browser code, will be used with data structures other
than perf_evsel (Jiri Olsa)

- Refactor 'perf config' (Taeung Song)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

show more ...

perf script stackcollapse: Remove reference to the perl interpreter

It is ignored and this is actually a python script, not a perl one.

Reported-by: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Ji

perf script stackcollapse: Remove reference to the perl interpreter

It is ignored and this is actually a python script, not a perl one.

Reported-by: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Link: http://lkml.kernel.org/n/tip-0w4bpbqd79v3sl34jvpr11v0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

show more ...

Merge tag 'perf-core-for-mingo-20160621' 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:

New features

Merge tag 'perf-core-for-mingo-20160621' 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:

New features:

- Add --dry-run option to 'perf record' to check if command line options can be
parsed, but not doing any recording (Wang Nan)

- Allow dumping the object files generated by llvm when processing eBPF
scriptlet events (Wang Nan)

- Add stackcollapse.py script to help generating flame graphs (Paolo Bonzini)

Documentation changes:

- Fix 'perf script' documentation of '-f' when it should be '-F' (Adrian Hunter)

Infrastructure changes:

- Fix write_backwards fallback when using a new tool on older kernels
without support for this feature (Arnaldo Carvalho de Melo)

- Remove some leftovers from the initial codebase copying from git
(Arnaldo Carvalho de Melo)

- List libelf-devel as an alternative, as this is how the libelf
development package is called on OpenSuSE (Jean Delvare)

- Rename __hists__add_entry to hists__add_entry (Jiri Olsa)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

show more ...

perf script: Add stackcollapse.py script

Add stackcollapse.py script as an example of parsing call chains, and
also of using optparse to access command line options.

The flame graph tools include a

perf script: Add stackcollapse.py script

Add stackcollapse.py script as an example of parsing call chains, and
also of using optparse to access command line options.

The flame graph tools include a set of scripts that parse output from
various tools (including "perf script"), remove the offsets in the
function and collapse each stack to a single line. The website also
says "perf report could have a report style [...] that output folded
stacks directly, obviating the need for stackcollapse-perf.pl", so here
it is.

This script is a Python rewrite of stackcollapse-perf.pl, using the perf
scripting interface to access the perf data directly from Python.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Brendan Gregg <bgregg@netflix.com>
Link: http://lkml.kernel.org/r/1460467573-22989-1-git-send-email-pbonzini@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

show more ...