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

Pull perf updates/fixes from Ingo Molnar:
"Mostly tooling updates, but also two kernel fixes: a call ch

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

Pull perf updates/fixes from Ingo Molnar:
"Mostly tooling updates, but also two kernel fixes: a call chain
handling robustness fix and an x86 PMU driver event definition fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/callchain: Force USER_DS when invoking perf_callchain_user()
tools build: Fixup sched_getcpu feature test
perf tests kmod-path: Don't fail if compressed modules aren't supported
perf annotate: Fix AArch64 comment char
perf tools: Fix spelling mistakes
perf/x86: Fix Broadwell-EP DRAM RAPL events
perf config: Refactor a duplicated code for obtaining config file name
perf symbols: Allow user probes on versioned symbols
perf symbols: Accept symbols starting at address 0
tools lib string: Adopt prefixcmp() from perf and subcmd
perf units: Move parse_tag_value() to units.[ch]
perf ui gtk: Move gtk .so name to the only place where it is used
perf tools: Move HAS_BOOL define to where perl headers are used
perf memswap: Split the byteswap memory range wrappers from util.[ch]
perf tools: Move event prototypes from util.h to event.h
perf buildid: Move prototypes from util.h to build-id.h

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Merge branch 'linus' into x86/urgent, to pick up dependent commits

We are going to fix a bug introduced by a more recent commit, so
refresh the tree.

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

Merge tag 'perf-core-for-mingo-4.12-20170503' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

Fixes

Merge tag 'perf-core-for-mingo-4.12-20170503' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

Fixes:

- Support setting probes in versioned user space symbols, such as
pthread_create@@GLIBC_2.1, picking the default one, more work
needed to make it possible to set it on the other versions, as
the 'perf probe' syntax already uses @ for other purposes.
(Paul Clarke)

- Do not special case address zero as an error for routines that
return addresses (symbol lookup), instead use the return as the
success/error indication and pass a pointer to return the address,
fixing 'perf test vmlinux' (the one that compares address between
vmlinux and kallsyms) on s/390, where the '_text' address is equal
to zero (Arnaldo Carvalho de Melo)

Infrastructure changes:

- More header sanitization, moving stuff out of util.h into
more appropriate headers and objects and sometimes creating
new ones (Arnaldo Carvalho de Melo)

- Refactor a duplicated code for obtaining config file name (Taeung Song)

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

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

Pull perf updates from Ingo Molnar:
"The main changes in this cycle were:

Kernel side changes:

- K

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

Pull perf updates from Ingo Molnar:
"The main changes in this cycle were:

Kernel side changes:

- Kprobes and uprobes changes:
- Make their trampolines read-only while they are used
- Make UPROBES_EVENTS default-y which is the distro practice
- Apply misc fixes and robustization to probe point insertion.

- add support for AMD IOMMU events

- extend hw events on Intel Goldmont CPUs

- ... plus misc fixes and updates.

Tooling side changes:

- support s390 jump instructions in perf annotate (Christian
Borntraeger)

- vendor hardware events updates (Andi Kleen)

- add argument support for SDT events in powerpc (Ravi Bangoria)

- beautify the statx syscall arguments in 'perf trace' (Arnaldo
Carvalho de Melo)

- handle inline functions in callchains (Jin Yao)

- enable sorting by srcline as key (Milian Wolff)

- add 'brstackinsn' field in 'perf script' to reuse the x86
instruction decoder used in the Intel PT code to study hot paths to
samples (Andi Kleen)

- add PERF_RECORD_NAMESPACES so that the kernel can record
information required to associate samples to namespaces, helping in
container problem characterization. (Hari Bathini)

- allow sorting by symbol_size in 'perf report' and 'perf top'
(Charles Baylis)

- in perf stat, make system wide (-a) the default option if no target
was specified and one of following conditions is met:
- no workload specified (current behaviour)
- a workload is specified but all requested events are system wide
ones, like uncore ones. (Jiri Olsa)

- ... plus lots of other updates, enhancements, cleanups and fixes"

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (235 commits)
perf tools: Fix the code to strip command name
tools arch x86: Sync cpufeatures.h
tools arch: Sync arch/x86/lib/memcpy_64.S with the kernel
tools: Update asm-generic/mman-common.h copy from the kernel
perf tools: Use just forward declarations for struct thread where possible
perf tools: Add the right header to obtain PERF_ALIGN()
perf tools: Remove poll.h and wait.h from util.h
perf tools: Remove string.h, unistd.h and sys/stat.h from util.h
perf tools: Remove stale prototypes from builtin.h
perf tools: Remove string.h from util.h
perf tools: Remove sys/ioctl.h from util.h
perf tools: Remove a few more needless includes from util.h
perf tools: Include sys/param.h where needed
perf callchain: Move callchain specific routines from util.[ch]
perf tools: Add compress.h for the *_decompress_to_file() headers
perf mem: Fix display of data source snoop indication
perf debug: Move dump_stack() and sighandler_dump_stack() to debug.h
perf kvm: Make function only used by 'perf kvm' static
perf tools: Move timestamp routines from util.h to time-utils.h
perf tools: Move units conversion/formatting routines to separate object
...

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perf buildid: Move prototypes from util.h to build-id.h

Where they belong.

Link: http://lkml.kernel.org/n/tip-94m3dziejxgo7k0488q3mqjm@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@r

perf buildid: Move prototypes from util.h to build-id.h

Where they belong.

Link: http://lkml.kernel.org/n/tip-94m3dziejxgo7k0488q3mqjm@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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Merge tag 'perf-core-for-mingo-4.12-20170424' 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:

User vi

Merge tag 'perf-core-for-mingo-4.12-20170424' 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:

User visible changes:

- Fix display of data source snoop indication in 'perf mem' (Andi Kleen)

- Fix the code to strip command name from /proc/PID/stat (Jiri Olsa)

Infrastructure changes:

- Continue the disentanglement of headers, specially util.h (Arnaldo Carvalho de Melo)

- Synchronize some header files with the kernel (Arnaldo Carvalho de Melo)

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

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Merge tag 'perf-core-for-mingo-4.12-20170419' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core cleanups from Arnaldo Carvalho de Melo:

- Introduce new head

Merge tag 'perf-core-for-mingo-4.12-20170419' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core cleanups from Arnaldo Carvalho de Melo:

- Introduce new header files out of the hodge-podge that util/util.h
became, trying to disentangle the includes hell that all C projects
end up growing. This should help in build times, as changes to
seemingly unrelated files (util.h included tons of headers) won't
trigger a rebuild of most object files.

- Use equivalent facilities found in the kernel source code base
originated tools/include/ header files, such as __stringify(),
ARRAY_SIZE, that has extra checks (__must_be_array()), etc.

- For that get some more files from the kernel sources, like
include/linux/bug.h, some just with the bits needed at this time.

- Use the headers where facilities declared in them are used, such
as PRIxu(32,64) macros (inttypes.h), errno defines (errno.h), etc.

- Remove various leftovers from the initial code base we copied from
git.git: FLEX_ARRAY, etc.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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perf tools: Include errno.h where needed

Removing it from util.h, part of an effort to disentangle the includes
hell, that makes changes to util.h or something included by it to cause
a complete reb

perf tools: Include errno.h where needed

Removing it from util.h, part of an effort to disentangle the includes
hell, that makes changes to util.h or something included by it to cause
a complete rebuild of the tools.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-ztrjy52q1rqcchuy3rubfgt2@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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Merge tag 'perf-core-for-mingo-4.12-20170327' 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 fea

Merge tag 'perf-core-for-mingo-4.12-20170327' 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:

- Handle inline functions in callchains (Jin Yao)

- Enable sorting by srcline as key (Milian Wolff)

Fixes:

- Fix no_size logic in addr_filter__resolve_kernel_syms() in the
auxtrace code (Adrian Hunter)

- Fix some thread refcount leaks in 'perf trace' (Arnaldo Carvalho de Melo)

- Fix divide by zero when calculating percent for an event in a group in
the annotate by source line code (Taeung Song)

- build-id files now aren't anymore symlinks, their parent directories
are, so readlink the later (Taeung Song)

- Assorted fixes for null termination problems, mostly related to
readlink, detected by valgrind (Tommi Rantala)

Infrastructure changes:

- Make vfs_getname probe point logic in 'perf trace' more robust
wrt length of pathname (Arnaldo Carvalho de Melo)

- Remove unused 'prefix' parameter from builtins main functions (Arnaldo Carvalho de Melo)

- Show 'perf list sdt' option in man page (Ravi Bangoria)

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

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perf tests: Do not assume that readlink() returns a null terminated string

Ensure that the string in buf is null terminated.

Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Cc: Alexander S

perf tests: Do not assume that readlink() returns a null terminated string

Ensure that the string in buf is null terminated.

Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20170322130624.21881-4-tommi.t.rantala@nokia.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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Merge branch 'next' into for-linus

Prepare input updates for 4.10 merge window.

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

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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-20160713' 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:

User visible

Merge tag 'perf-core-for-mingo-20160713' 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:

User visible changes:

- 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)

Infrastructure changes:

- Fix up BITS_PER_LONG setting (Arnaldo Carvalho de Melo)

- Add fallback from ELF_C_READ_MMAP to ELF_C_READ in objtool, fixing
the build in libelf implementations lacking that elf_begin() cmd,
such as Alpine Linux's (Arnaldo Carvalho de Melo)

- Avoid checking code drift on busybox's diff in objtool (Arnaldo Carvalho de Melo)

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

show more ...

perf test: Add a test case for SDT event

Add a basic test case for SDT event support. This test scans an SDT
event in perftools and check whether the SDT event is correctly stored
into the buildid

perf test: Add a test case for SDT event

Add a basic test case for SDT event support. This test scans an SDT
event in perftools and check whether the SDT event is correctly stored
into the buildid cache.

Here is an example:

----
$ perf test sdt -v
47: Test SDT event probing :
--- start ---
test child forked, pid 20732
Found 72 SDTs in /home/mhiramat/ksrc/linux/tools/perf/perf
Writing cache: %sdt_perf:test_target=test_target
Cache committed: 0
symbol:test_target file:(null) line:0 offset:0 return:0 lazy:(null)
test child finished with 0
---- end ----
Test SDT event probing: Ok
----

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/146831796546.17065.1502584370844087537.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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