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And remove it from tools/perf/{perf,util}.h, making code that needs
these macros to include linux/time64.h instead, to match how this is
used in the kernel sources.
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: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-e69fc1pvkgt57yvxqt6eunyg@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"First off, the ACPICA code in the kernel is updated to upstream
revision 20160831 that brings in a few bug fixes and cleanups. In
particular, it is possible to mask GPEs now (and the sysfs interface
for GPE control is fixed on top of that), problems related to the
table loading mechanism are fixed and all code related to FADT version
2 (which has never been part of the ACPI specification) is dropped.
On the new features front, there is a new watchdog driver based on the
ACPI WDAT (ACPI Watchdog Action Table), needed on some platforms to
replace the iTCO watchdog that doesn't work there, and some UART
devices get new definitions of built-in properties (to be accessed via
the generic device properties API).
Also, included is a fix for an ACPI-related PCI resorces allocation
issue and a few problems in the EC driver and in the button and
battery drivers are fixed.
In addition to that, the ACPI CPPC library is updated to make batching
of requests sent over the PCC channel possible (which reduces the PCC
usage overhead substantially in some cases) and to support functional
fixed hardware (FFH) type of CPPC registers access (which will allow
CPPC to be used on x86 too in the future).
As usual, there are some assorted fixes and cleanups too.
Specifics:
- Update of the ACPICA code in the kernel to upstream revision
20160831 with the following major changes:
* New mechanism for GPE masking.
* Fixes for issues related to the LoadTable operator and table
loading.
* Fixes for issues related to so-called module-level code (MLC),
that is AML that doesn't belong to any methods.
* Change of the return value of the _OSI method to reflect the
Windows behavior.
* GAS (Generic Address Structure) support fix related to 32-bit
FADT addresses.
* Elimination of unnecessary FADT version 2 support.
* ACPI tools fixes and cleanups.
From Bob Moore, Lv Zheng, and Jung-uk Kim.
- ACPI sysfs interface updates to fix GPE handling (on top of the new
GPE masking mechanism in ACPICA) and issues related to table
loading (Lv Zheng).
- New watchdog driver based on the ACPI WDAT (ACPI Watchdog Action
Table), needed on some platforms to replace the iTCO watchdog that
doesn't work there and related updates of the intel_pmc_ipc,
i2c/i801 and MFD/lcp_ich drivers (Mika Westerberg).
- Driver core fix to prevent it from leaking secondary fwnode objects
during device removal (Lukas Wunner).
- New definitions of built-in properties for UART in ACPI-based x86
SoC drivers and a 8250_dw driver quirk for the APM X-Gene SoC
(Heikki Krogerus).
- New device ID for the Vulcan SPI controller and constification of
local strucures in the AMD SoC (APD) ACPI driver (Kamlakant Patel,
Julia Lawall).
- Fix for a bug causing the allocation of PCI resorces to fail if
ACPI-enumerated child platform devices are registered below the PCI
devices in question (Mika Westerberg).
- Change of the default polarity for PCI legacy IRQs to high on
systems booting wth ACPI on platforms with a GIC interrupt
controller model fixing the discrepancy between the specification
and HW behavior (Lorenzo Pieralisi).
- Fixes for the handling of system suspend/resume in the ACPI EC
driver and update of that driver to make it cope with the cases
when the EC device defined in the ECDT has to be used throughout
the entire system life cycle (Lv Zheng).
- Update of the ACPI CPPC library to allow it to batch requests sent
over the PCC channel (to reduce overhead), to support the fixed
functional hardware (FFH) CPPC registers access type, to notify the
mailbox framework about TX completions when the interrupt flag is
set for the PCC mailbox, and to support HW-Reduced Communication
Subspace type 2 (Ashwin Chaugule, Prashanth Prakash, Srinivas
Pandruvada, Hoan Tran).
- ACPI button driver fix and documentation update related to the
handling of laptop lids (Lv Zheng).
- ACPI battery driver initialization fix (Carlos Garnacho).
- ACPI GPIO enumeration documentation update (Mika Westerberg).
- Assorted updates of the core ACPI bus type code (Lukas Wunner, Lv
Zheng).
- Assorted cleanups of the ACPI table parsing code and the
x86-specific ACPI code (Al Stone).
- Fixes for assorted ACPI-related issues found in linux-next (Wei
Yongjun)"
* tag 'acpi-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (98 commits)
ACPI / documentation: Use recommended name in GPIO property names
watchdog: wdat_wdt: Fix warning for using 0 as NULL
watchdog: wdat_wdt: fix return value check in wdat_wdt_probe()
platform/x86: intel_pmc_ipc: Do not create iTCO watchdog when WDAT table exists
i2c: i801: Do not create iTCO watchdog when WDAT table exists
mfd: lpc_ich: Do not create iTCO watchdog when WDAT table exists
ACPI / bus: Adjust ACPI subsystem initialization for new table loading mode
ACPICA: Parser: Fix a regression in LoadTable support
ACPICA: Tables: Fix "UNLOAD" code path lock issues
ACPI / watchdog: Add support for WDAT hardware watchdog
ACPI / platform: Pay attention to parent device's resources
PCI: Add pci_find_resource()
ACPI / CPPC: Support PCC with interrupt flag
ACPI / sysfs: Update sysfs signature handling code
ACPI / sysfs: Fix an issue for LoadTable opcode
ACPICA: Tables: Fix a regression in acpi_tb_find_table()
ACPI / tables: Remove duplicated include from tables.c
ACPI / APD: constify local structures
x86: ACPI: make variable names clearer in acpi_parse_madt_lapic_entries()
x86: ACPI: remove extraneous white space after semicolon
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* acpica: (45 commits)
ACPICA: Parser: Fix a regression in LoadTable support
ACPICA: Tables: Fix "UNLOAD" code path lock issues
ACPICA: Tables: Fix a regression in acpi_tb_find_table()
ACPICA: Update version to 20160831
ACPICA: Tables: Tune table mutex to be a leaf lock
ACPICA: Dispatcher: Fix a mutex issue for method auto serialization
ACPICA: Namespace: Fix dynamic table loading issues
ACPICA: Namespace: Add acpi_ns_get_node_unlocked()
ACPICA: Interpreter: Fix MLC issues by switching to new term_list grammar for table loading
ACPICA: Update return value for intenal _OSI method
ACPICA: Tables: Override all 64-bit GAS fields when acpi_gbl_use32_bit_fadt_addresses is TRUE
ACPICA: Tables: Add new table events indicating table installation/uninstallation
ACPICA: Tables: Remove wrong table event macros
ACPICA: Tables: Remove acpi_tb_install_fixed_table()
ACPICA: Add a couple of casts to uthex.c
ACPICA: Cleanup for all string-to-integer conversions
ACPICA: Debugger: Add subcommand for predefined name execution
ACPICA: Update version to 20160729
ACPICA: OSL: Fix a regression that old GCC requires a workaround for strchr()
ACPICA: OSL: Cleanup the inclusion order of the compiler-specific headers
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ACPICA commit e2e72a351201fd58e4694418859ae2c247dafca0
Consolidate multiple versions of strtoul64 to one common version.
limit possible bases to either 10 or 16.
Handles both implicit and explicit conversions.
Added a 2-character ascii-to-hex function for GPEs and buffers.
Adds a new file, utstrtoul64.c
Link: https://github.com/acpica/acpica/commit/e2e72a35
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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fxxx()/errno/perror() instead
ACPICA commit 189429fb7d06cdb89043ae32d615faf553467f1d
This patch follows new ACPICA design, eliminates old portable OSLs, and
implements fopen/fread/fwrite/fclose/fseek/ftell for GNU EFI
environment. This patch also eliminates acpi_log_error(), convering them
into fprintf(stderr)/perror(). Lv Zheng.
Link: https://github.com/acpica/acpica/commit/189429fb
Link: https://bugs.acpica.org/show_bug.cgi?id=1302
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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ACPICA commit d261d40ea168f8e4c4e3986de720b8651c4aba1c
This patch adds sprintf()/snprintf()/vsnprintf()/printf()/vfprintf()
support for OSPMs that have ACPI_USE_SYSTEM_CLIBRARY defined but do not
have ACPI_USE_STANDARD_HEADERS defined.
-iwithprefix include is required to include <stdarg.h> which contains
compiler specific implementation of vargs when -nostdinc is specified.
-fno-builtin is required for GCC to avoid optimization performed printf().
This optimization cannot be automatically disabled by specifying -nostdlib.
Please refer to the first link below for the details. However, the build
option changes do not affect Linux kernel builds and are not included.
Lv Zheng.
Link: http://www.ciselant.de/projects/gcc_printf/gcc_printf.html
Link: https://github.com/acpica/acpica/commit/d261d40e
Link: https://bugs.acpica.org/show_bug.cgi?id=1302
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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ACPICA commit 9bb265c2afb9910e46f820d6759648580edabd09
When /Za is specified, headers of some Windows SDKs contain bugs breaking
VC builds, and MSVC9's default SDK is one of such header-buggy library.
In order to solve this issue, many VC developers stop using /Za. However
we've been asked to have this fixed without removing /Za.
In MSVC9 default SDK, this issue can be fixed by restricting <sys/stat.h>
to be the last standard file included by every source file in the projects.
This patch thus moves <sys/stat.h> inclusion to "acapps.h", so that this
issue can be fixed by ensuring that "acapps.h" is always the last standard
file included by all of the ACPICA source files. This is in fact also a
useful cleanup because applications can only include one header (e.x.,
acpidump.h) instead of including acapps.h separately. Lv Zheng.
Except some harmless header inclusion re-ordering, Linux kernel is not
affected by this change.
Link: https://github.com/acpica/acpica/commit/9bb265c2
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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ACPICA commit 7f9b359b7c78c69b07f62eb2d58f710c351fd75d
EFI header should use standard C library stuffs (integer types and IO
handles) rather than implementing such standard stuffs.
This patch fixes this issue by:
1. Implementing standard integer types for ACPI_USE_STANDARD_HADERS=n;
2. Defining EFI types using standard integer types and standard IO handles;
3. Tuning header inclusion order and environment definition order;
4. Removing wrong standard header inclusion from ACPICA core files;
5. Moving several application headers from acpidump.h to acenv.h.
This patch corrects some of them. Lv Zheng.
Except some harmless header inclusion re-ordering, Linux kernel is not
affected by this change.
Link: https://github.com/acpica/acpica/commit/7f9b359b
Link: https://bugs.acpica.org/show_bug.cgi?id=1300
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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by converting size_t to acpi_size
ACPICA commit 7cf411136c69ef0b8f184b96599eb45c15b89226
When standard size_t is not defined due to ACPI_USE_STANDARD_HEADERS=n,
we shouldn't use size_t, but should use acpi_size instead. This fixes such
build issue. Lv Zheng.
Link: https://github.com/acpica/acpica/commit/7cf41113
Link: https://bugs.acpica.org/show_bug.cgi?id=1296
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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ACPICA commit 080f99d5b29313380accd00d2b9768e809eb417b
acpi_gbl_integer_byte_width has already been instantiated by ACPI_GLOBAL() in
acglobal.h. Lv Zheng.
Link: https://github.com/acpica/acpica/commit/080f99d5
Link: https://bugs.acpica.org/show_bug.cgi?id=1301
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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ACPICA commit 408198c8c9786f9f104ee925020c3ab1701906e4
The acpi_gbl_debug_timeout which is used by acpiexec -et option now is only
implemented in oswinxf.c and used for WIN32 builds. This makes it very
difficult to remember that we need to add this variable to other os
specific layer files in order for linking. This patch makes it a global
option dependent on ACPI_APPLICATION so that it can always be linked by the
applications. Lv Zheng.
Link: https://github.com/acpica/acpica/commit/408198c8
Link: https://bugs.acpica.org/show_bug.cgi?id=1295
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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ACPICA commit fc0f12b1eff6253f83e599a7ee1765fcc8e42dcc
Add check for required filename for the -d and -da options.
ACPICA BZ 1285.
Link: https://github.com/acpica/acpica/commit/fc0f12b1
Link: https://bugs.acpica.org/show_bug.cgi?id=1285
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
- Four fixes for "flush hint" support.
Flush hints are addresses advertised by the ACPI 6+ NFIT (NVDIMM
Firmware Interface Table) that when written and fenced guarantee that
writes pending in platform write buffers (outside the cpu) have been
flushed to media. They might also be used by hypervisors as a
trigger condition to flush guest-persistent memory ranges to storage.
Fix a potential data corruption issue, a broken definition of the
hint array, a wrong allocation size for the unit test implementation
of the flush hint table, and missing NULL check in an error path.
The unit test, while it did not prevent these bugs from being
merged, at least triggered occasional crashes in advance of
production usages.
- Fix handling of ACPI DSM error status results. The DSM mechanism
allows communication with platform and memory device firmware. We
correctly parse known errors, but were silently ignoring others.
Fix it to consistently fail any command with a non-zero status return
that we otherwise do not interpret / handle.
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
libnvdimm, region: fix flush hint table thinko
nfit: fail DSMs that return non-zero status by default
libnvdimm: fix devm_nvdimm_memremap() error path
tools/testing/nvdimm: fix allocation range for mock flush hint tables
nvdimm: fix PHYS_PFN/PFN_PHYS mixup
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Commit 480b6837aa57 "nvdimm: fix PHYS_PFN/PFN_PHYS mixup" identified
that we were passing an invalid address to devm_nvdimm_ioremap(). With
that fixed it exposed a bug in the memory reservation size for flush
hint tables. Since we map a full page we need to mock a full page of
memory to back the flush hint table entries.
Cc: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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When we replace a multiorder entry, check that all indices reflect the
new value.
Also, compile the test suite with -O2, which shows other problems with
the code due to some dodgy pointer operations in the radix tree code.
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Three fixes:
- AMD microcode loading fix with randomization
- an lguest tooling fix
- and an APIC enumeration boundary condition fix"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/apic: Fix num_processors value in case of failure
tools/lguest: Don't bork the terminal in case of wrong args
x86/microcode/AMD: Fix load of builtin microcode with randomized memory
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Running lguest without arguments or with a wrong argument name
borks the terminal, because the cleanup handler is set up too late
in the initialization process.
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
Second set of IIO fixes for the 4.8 cycle.
We have a big rework of the kxsd9 driver queued up behind the fix below and
a fix for a recent fix that was marked for stable.
Hence this fix series is perhaps a little more urgent than average for IIO.
* core
- a fix for a fix in the last set. The recent fix for blocking ops when
! task running left a path (unlikely one) in which the function return
value was not set - so initialise it to 0.
- The IIO_TYPE_FRACTIONAL code previously didn't cope with negative
fractions. Turned out a fix for this was in Analog's tree but hadn't made
it upstream.
* bmc150
- reset chip at init time. At least one board out there ends up coming up
in an unstable state due to noise during power up. The reset does no
harm on other boards.
* kxsd9
- Fix a bug in the reported scaling due to failing to set the integer
part to 0.
* hid-sensors-pressure
- Output was in the wrong units to comply with the IIO ABI.
* tools
- iio_generic_buffer: Fix the trigger-less mode by ensuring we don't fault
out for having no trigger when we explicitly said we didn't want to have
one.
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Passing the trigger-less mode option on the command line causes
iio_generic_buffer to fail searching for an IIO trigger.
Fix this by skipping trigger initialization if trigger-less mode is
requested.
Technically it actually fixes:
7c7e9dad70 where the bug was introduced but as the window to the patch
below that changes the context was very small let's mark it with that.
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Fixes: deb4d1fdcb5af ("iio: generic_buffer: Fix --trigger-num option")
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO driver fixes from Greg KH:
"Here are a number of small fixes for staging and IIO drivers that
resolve reported problems.
Full details are in the shortlog. All of these have been in
linux-next with no reported issues"
* tag 'staging-4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (35 commits)
arm: dts: rockchip: add reset node for the exist saradc SoCs
arm64: dts: rockchip: add reset saradc node for rk3368 SoCs
iio: adc: rockchip_saradc: reset saradc controller before programming it
iio: accel: kxsd9: Fix raw read return
iio: adc: ti_am335x_adc: Increase timeout value waiting for ADC sample
iio: adc: ti_am335x_adc: Protect FIFO1 from concurrent access
include/linux: fix excess fence.h kernel-doc notation
staging: wilc1000: correctly check if associatedsta has not been found
staging: wilc1000: NULL dereference on error
staging: wilc1000: txq_event: Fix coding error
MAINTAINERS: Add file patterns for ion device tree bindings
MAINTAINERS: Update maintainer entry for wilc1000
iio: chemical: atlas-ph-sensor: fix typo in val assignment
iio: fix sched WARNING "do not call blocking ops when !TASK_RUNNING"
staging: comedi: ni_mio_common: fix AO inttrig backwards compatibility
staging: comedi: dt2811: fix a precedence bug
staging: comedi: adv_pci1760: Do not return EINVAL for CMDF_ROUND_DOWN.
staging: comedi: ni_mio_common: fix wrong insn_write handler
staging: comedi: comedi_test: fix timer race conditions
staging: comedi: daqboard2000: bug fix board type matching code
...
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Uninitialized channel pointer causes segmentation fault when we
call free(channel) during cleanup() with no channels initialized.
This happens when you exit early for usage errors. Initialize
the pointer to NULL when it is declared.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Tested-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
"A few fixes from the perf departement
- prevent a imbalanced preemption disable in the events teardown code
- prevent out of bound acces in perf userspace
- make perf tools compile with UCLIBC again
- a fix for the userspace unwinder utility"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: Use this_cpu_ptr() when stopping AUX events
perf evsel: Do not access outside hw cache name arrays
tools lib: Reinstate strlcpy() header guard with __UCLIBC__
perf unwind: Use addr_location::addr instead of ip for entries
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We have to check if the values are >= *_MAX, not just >, fix it.
From the bugzilla report:
''In file /tools/perf/util/evsel.c function __perf_evsel__hw_cache_name
it appears that there is a bug that reads beyond the end of the buffer.
The statement "if (type > PERF_COUNT_HW_CACHE_MAX)" allows type to be
equal to the maximum value. Later, when statement "if
(!perf_evsel__is_cache_op_valid(type, op))" is executed, the function
can access array perf_evsel__hw_cache_stat[type] beyond the end of the
buffer.
It appears to me that the statement "if (type > PERF_COUNT_HW_CACHE_MAX)"
should be "if (type >= PERF_COUNT_HW_CACHE_MAX)"
Bug found with Coverity and manual code review. No attempts were made to
execute the code with a maximum type value.''
Committer note:
Testing it:
$ perf record -e $(echo $(perf list cache | cut -d \[ -f1) | sed 's/ /,/g') usleep 1
[ perf record: Woken up 16 times to write data ]
[ perf record: Captured and wrote 0.023 MB perf.data (34 samples) ]
$ perf evlist
L1-dcache-load-misses
L1-dcache-loads
L1-dcache-stores
L1-icache-load-misses
LLC-load-misses
LLC-loads
LLC-store-misses
LLC-stores
branch-load-misses
branch-loads
dTLB-load-misses
dTLB-loads
dTLB-store-misses
dTLB-stores
iTLB-load-misses
iTLB-loads
node-load-misses
node-loads
node-store-misses
node-stores
$ perf list cache
List of pre-defined events (to be used in -e):
L1-dcache-load-misses [Hardware cache event]
L1-dcache-loads [Hardware cache event]
L1-dcache-stores [Hardware cache event]
L1-icache-load-misses [Hardware cache event]
LLC-load-misses [Hardware cache event]
LLC-loads [Hardware cache event]
LLC-store-misses [Hardware cache event]
LLC-stores [Hardware cache event]
branch-load-misses [Hardware cache event]
branch-loads [Hardware cache event]
dTLB-load-misses [Hardware cache event]
dTLB-loads [Hardware cache event]
dTLB-store-misses [Hardware cache event]
dTLB-stores [Hardware cache event]
iTLB-load-misses [Hardware cache event]
iTLB-loads [Hardware cache event]
node-load-misses [Hardware cache event]
node-loads [Hardware cache event]
node-store-misses [Hardware cache event]
node-stores [Hardware cache event]
$
Reported-by: Brian Sweeney <bsweeney@lgsinnovations.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=153351
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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perf tools build in recent kernels spews splat when cross compiling with uClibc:
| CC util/alias.o
| In file included from tools/perf/util/../ui/../util/cache.h:8:0,
| from tools/perf/util/../ui/helpline.h:7,
| from tools/perf/util/debug.h:8,
| from arch/../util/cpumap.h:9,
| from arch/../util/env.h:5,
| from arch/common.h:4,
| from arch/common.c:3:
| tools/include/linux/string.h:12:15: warning: redundant redeclaration of ‘strlcpy’ [-Wredundant-decls]
| extern size_t strlcpy(char *dest, const char *src, size_t size);
^
This is after commit 61a6445e463a31 ("tools lib: Guard the strlcpy() header with
__GLIBC__").
The problem is uClibc also defines __GLIBC__ for exported headers for
applications. So add that specific check to not trip for uClibc.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Petri Gynther <pgynther@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: linux-snps-arc@lists.infradead.org
Link: http://lkml.kernel.org/r/1471537703-16439-1-git-send-email-vgupta@synopsys.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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This fixes the srcline translation for call chains of user space
applications.
Before we got:
perf report --stdio --no-children -s sym,srcline -g address
8.92% [.] main mandelbrot.h:41
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|--3.70%--main +8390240
| __libc_start_main +139950056726769
| _start +8388650
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|--2.74%--main +8390189
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--2.08%--main +8390296
__libc_start_main +139950056726769
_start +8388650
7.59% [.] main complex:1326
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|--4.79%--main +8390203
| __libc_start_main +139950056726769
| _start +8388650
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--2.80%--main +8390219
7.12% [.] __muldc3 libgcc2.c:1945
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|--3.76%--__muldc3 +139950060519490
| main +8390224
| __libc_start_main +139950056726769
| _start +8388650
|
--3.32%--__muldc3 +139950060519512
main +8390224
With this patch applied, we instead get:
perf report --stdio --no-children -s sym,srcline -g address
8.92% [.] main mandelbrot.h:41
|
|--3.70%--main mandelbrot.h:41
| __libc_start_main +241
| _start +4194346
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|--2.74%--main mandelbrot.h:41
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--2.08%--main mandelbrot.h:41
__libc_start_main +241
_start +4194346
7.59% [.] main complex:1326
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|--4.79%--main complex:1326
| __libc_start_main +241
| _start +4194346
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--2.80%--main complex:1326
7.12% [.] __muldc3 libgcc2.c:1945
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|--3.76%--__muldc3 libgcc2.c:1945
| main mandelbrot.h:39
| __libc_start_main +241
| _start +4194346
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--3.32%--__muldc3 libgcc2.c:1945
main mandelbrot.h:39
Suggested-and-Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Milian Wolff <milian.wolff@kdab.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
LPU-Reference: 20160816153926.11288-1-milian.wolff@kdab.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Here are a few GPIO fixes for v4.8.
I was expecting some fallout from the new chardev rework but nothing
like that turned up att all. Instead a Kconfig confusion that I think
I have finally nailed, then some ordinary driver noise and trivia.
This fixes a Kconfig issue with UM: when I made GPIOLIB available to
all archs, that included UM, but the OF part of GPIOLIB requires
HAS_IOMEM, so we add HAS_IOMEM as a dependency to OF_GPIO.
This in turn exposed the fact that a few GPIO drivers were implicitly
assuming OF_GPIO as their dependency but instead depended on OF alone
(the typical problem being a pointer inside gpio_chip not existing
unless OF_GPIO is selected) and then UM would fail to compile with
these drivers instead. Then I lost patience and made any GPIO driver
depending on just OF depend on OF_GPIO instead, that is certainly what
they meant and the only thing that makes sense anyway. GPIO with just
OF but !OF_GPIO does not make sense.
Also a fix for the max730x driver data pointer, and a minor comment
fix for the GPIO tools"
* tag 'gpio-v4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: make any OF dependent driver depend on OF_GPIO
gpio: Fix OF build problem on UM
gpio: max730x: set gpiochip data pointer before using it
tools/gpio: fix gpio-event-mon header comment
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Fixes: 97f69747d8b1 ('tools/gpio: add the gpio-event-mon tool')
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Mostly tooling fixes, but also start/stop filter related fixes, a perf
event read() fix, a fix uncovered by fuzzing, and an uprobes leak fix"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: Check return value of the perf_event_read() IPI
perf/core: Enable mapping of the stop filters
perf/core: Update filters only on executable mmap
perf/core: Fix file name handling for start/stop filters
perf/core: Fix event_function_local()
uprobes: Fix the memcg accounting
perf intel-pt: Fix occasional decoding errors when tracing system-wide
tools: Sync kvm related header files for arm64 and s390
perf probe: Release resources on error when handling exit paths
perf probe: Check for dup and fdopen failures
perf symbols: Fix annotation of objects with debuginfo files
perf script: Don't disable use_callchain if input is pipe
perf script: Show proper message when failed list scripts
perf jitdump: Add the right header to get the major()/minor() definitions
perf ppc64le: Fix build failure when libelf is not present
perf tools mem: Fix -t store option for record command
perf intel-pt: Fix ip compression
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git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
- Fix occasional decoding errors when tracing system-wide with
Intel PT (Adrian Hunter)
- Fix ip compression in Intel PT for some specific packet types not
present on current hardware (Adrian Hunter)
- Fix annotation of objects with debuginfo files (Anton Blanchard)
- Fix build on Fedora Rawhide (25) wrt using the right header to
get the major() & minor() definitions in the jitdump code, now
it is deprecated getting those using sys/types.h, one has to use
sys/sysmacros.h (Arnaldo Carvalho de Melo)
- Sync arm64/s390 kvm related header files (Arnaldo Carvalho de Melo)
- Check for dup and fdopen failures in 'perf probe' (Colin Ian King,
Arnaldo Carvalho de Melo)
- Fix showing callchains in pipe mode, i.e.
perf record -g -o - workload | perf script
now shows callchains (He Kuang)
- Show proper message when the scripts directory points to some
invalid location in 'perf script --list' (He Kuang)
- Fix 'perf mem -t store' to record 'cpu/mem-stores/P' events
again (Jiri Olsa)
- Fix ppc64le build failure when libelf is not present (Ravi Bangoria)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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In order to successfully decode Intel PT traces, context switch events
are needed from the moment the trace starts. Currently that is ensured
by using the 'immediate' flag which enables the switch event when it is
opened.
However, since commit 86c2786994bd ("perf intel-pt: Add support for
PERF_RECORD_SWITCH") that might not always happen. When tracing
system-wide the context switch event is added to the tracking event
which was not set as 'immediate'. Change that so it is.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org # v4.4+
Fixes: 86c2786994bd ("perf intel-pt: Add support for PERF_RECORD_SWITCH")
Link: http://lkml.kernel.org/r/1471245784-22580-1-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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From a quick look nothing stands out as requiring changes to kvm tools
such as tools/perf/arch/s390/util/kvm-stat.c.
Silences these header checking warnings:
$ make -C tools/perf
make: Entering directory '/home/acme/git/linux/tools/perf'
BUILD: Doing 'make -j4' parallel build
Warning: tools/arch/s390/include/uapi/asm/kvm.h differs from kernel
Warning: tools/arch/s390/include/uapi/asm/sie.h differs from kernel
Warning: tools/arch/arm64/include/uapi/asm/kvm.h differs from kernel
<SNIP>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-btutge414g516qmh6r5ienlj@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Colin King <colin.king@canonical.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-zh2j4iqimralugke5qq7dn6d@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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dup and fdopen can potentially fail, so add some extra
error handling checks rather than assuming they always work.
Signed-off-by: Colin King <colin.king@canonical.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1471038296-12956-1-git-send-email-colin.king@canonical.com
[ Free resources when those functions (now being verified) fail ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Commit 73cdf0c6ea9c ("perf symbols: Record text offset in dso
to calculate objdump address") started storing the offset of
the text section for all DSOs:
if (elf_section_by_name(elf, &ehdr, &tshdr, ".text", NULL))
dso->text_offset = tshdr.sh_addr - tshdr.sh_offset;
Unfortunately this breaks debuginfo files, because we need to calculate
the offset of the text section in the associated executable file. As a
result perf annotate returns junk for all debuginfo files.
Fix this by using runtime_ss->elf which should point at the executable
when parsing a debuginfo file.
Signed-off-by: Anton Blanchard <anton@samba.org>
Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Tested-by: Wang Nan <wangnan0@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org # v4.6+
Fixes: 73cdf0c6ea9c ("perf symbols: Record text offset in dso to calculate objdump address")
Link: http://lkml.kernel.org/r/20160813115533.6de17912@kryten
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Because perf data from pipe do not have a header with evsel attr, we
should not check that and disable symbol_conf.use_callchain. Otherwise,
perf script won't show callchains even if the data stream contains
callchain.
Before:
$ perf record -g -o - uname |perf script
Linux
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.000 MB - ]
uname 1828 182630.186578: 250000 cpu-clock: ..b9499 setup_arg_pages
uname 1828 182630.186850: 250000 cpu-clock: ..83b20 ___might_sleep
uname 1828 182630.187153: 250000 cpu-clock: ..4b6be file_map_prot_ch
...
After:
$ perf record -g -o - uname |perf script
Linux
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.000 MB - ]
uname 1833 182675.927099: 250000 cpu-clock:
ba5520 _raw_spin_lock+0xfe200040 ([kernel.kallsyms])
389dd4 expand_downwards+0xfe200154 ([kernel.kallsyms])
389f34 expand_stack+0xfe200024 ([kernel.kallsyms])
3b957e setup_arg_pages+0xfe20019e ([kernel.kallsyms])
40c80f load_elf_binary+0xfe20042f ([kernel.kallsyms])
...
Signed-off-by: He Kuang <hekuang@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1470309943-153909-2-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Perf shows the usage message when perf scripts folder failed to open,
which misleads users to let them think the command is being mistyped.
This patch shows a proper message and guides users to check the
PERF_EXEC_PATH environment variable in that case.
Before:
$ perf script --list
Usage: perf script [<options>]
or: perf script [<options>] record <script> [<record-options>] <command>
or: perf script [<options>] report <script> [script-args]
or: perf script [<options>] <script> [<record-options>] <command>
or: perf script [<options>] <top-script> [script-args]
-l, --list list available scripts
After:
$ perf script --list
open(/home/user/perf-core/scripts) failed.
Check for "PERF_EXEC_PATH" env to set scripts dir.
Signed-off-by: He Kuang <hekuang@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1470309943-153909-1-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Noticed on Fedora Rawhide:
$ gcc --version
gcc (GCC) 6.1.1 20160721 (Red Hat 6.1.1-4)
$ rpm -q glibc
glibc-2.24.90-1.fc26.x86_64
$
CC /tmp/build/perf/util/jitdump.o
util/jitdump.c: In function 'jit_repipe_code_load':
util/jitdump.c:428:2: error: '__major_from_sys_types' is deprecated:
In the GNU C Library, `major' is defined by <sys/sysmacros.h>.
For historical compatibility, it is currently defined by
<sys/types.h> as well, but we plan to remove this soon.
To use `major', include <sys/sysmacros.h> directly.
If you did not intend to use a system-defined macro `major',
you should #undef it after including <sys/types.h>.
[-Werror=deprecated-declarations]
event->mmap2.maj = major(st.st_dev);
^~~~~
In file included from /usr/include/features.h:397:0,
from /usr/include/sys/types.h:25,
from util/jitdump.c:1:
/usr/include/sys/sysmacros.h:87:1: note: declared here
__SYSMACROS_DEFINE_MAJOR (__SYSMACROS_FST_IMPL_TEMPL)
Fix it following that recomendation.
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: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-3majvd0adhfr25rvx4v5e9te@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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arch__post_process_probe_trace_events() calls get_target_map() to
prepare symbol table. get_target_map() is defined inside
util/probe-event.c.
probe-event.c will only get included in perf binary if CONFIG_LIBELF is
set. Hence arch__post_process_probe_trace_events() needs to be defined
inside #ifdef HAVE_LIBELF_SUPPORT to solve compilation error.
Reported-and-Tested-by: Anton Blanchard <anton@samba.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/57ABFF88.8030905@linux.vnet.ibm.com
[ Thunderbird MUA mangled it, fix that ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Michael reported 'perf mem -t store record' being broken. The reason is
latest rework of this area:
commit acbe613e0c03 ("perf tools: Add monitored events array")
We don't mark perf_mem_events store record when -t store option is
specified.
Committer notes:
Before:
# perf mem -t store record usleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.020 MB perf.data (7 samples) ]
# perf evlist
cycles:ppp
#
After:
# perf mem -t store record usleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.020 MB perf.data (7 samples) ]
# perf evlist
cpu/mem-stores/P
#
Reported-by: Michael Petlan <mpetlan@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Fixes: acbe613e0c03 ("perf tools: Add monitored events array")
Link: http://lkml.kernel.org/r/1470905457-18311-1-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The June 2015 Intel SDM introduced IP Compression types 4 and 6. Refer
to section 36.4.2.2 Target IP (TIP) Packet - IP Compression.
Existing Intel PT packet decoder did not support type 4, and got type 6
wrong. Because type 3 and type 4 have the same number of bytes, the
packet 'count' has been changed from being the number of ip bytes to
being the type code. That allows the Intel PT decoder to correctly
decide whether to sign-extend or use the last ip. However that also
meant the code had to be adjusted in a number of places.
Currently hardware is not using the new compression types, so this fix
has no effect on existing hardware.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1469005206-3049-1-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Pull virtio/vhost fixes from Michael Tsirkin:
- test fixes
- a vsock fix
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
tools/virtio: add dma stubs
vhost/test: fix after swiotlb changes
vhost/vsock: drop space available check for TX vq
ringtest: test build fix
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Fixes build after recent IOMMU-related changes,
mustly by adding more stubs.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Recent changes to ptr_ring broke the ringtest
which lacks a likely() stub. Fix it up.
Fixes: 982fb490c298896d15e9323a882f34a57c11ff56
("ptr_ring: support zero length ring")
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Mostly tooling fixes, plus two uncore-PMU fixes, an uprobes fix, a
perf-cgroups fix and an AUX events fix"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/uncore: Add enable_box for client MSR uncore
perf/x86/intel/uncore: Fix uncore num_counters
uprobes/x86: Fix RIP-relative handling of EVEX-encoded instructions
perf/core: Set cgroup in CPU contexts for new cgroup events
perf/core: Fix sideband list-iteration vs. event ordering NULL pointer deference crash
perf probe ppc64le: Fix probe location when using DWARF
perf probe: Add function to post process kernel trace events
tools: Sync cpufeatures headers with the kernel
toops: Sync tools/include/uapi/linux/bpf.h with the kernel
tools: Sync cpufeatures.h and vmx.h with the kernel
perf probe: Support signedness casting
perf stat: Avoid skew when reading events
perf probe: Fix module name matching
perf probe: Adjust map->reloc offset when finding kernel symbol from map
perf hists: Trim libtraceevent trace_seq buffers
perf script: Add 'bpf-output' field to usage message
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git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
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)
- 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@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Powerpc has Global Entry Point and Local Entry Point for functions. LEP
catches call from both the GEP and the LEP. Symbol table of ELF contains
GEP and Offset from which we can calculate LEP, but debuginfo does not
have LEP info.
Currently, perf prioritize symbol table over dwarf to probe on LEP for
ppc64le. But when user tries to probe with function parameter, we fall
back to using dwarf(i.e. GEP) and when function called via LEP, probe
will never hit.
For example:
$ objdump -d vmlinux
...
do_sys_open():
c0000000002eb4a0: e8 00 4c 3c addis r2,r12,232
c0000000002eb4a4: 60 00 42 38 addi r2,r2,96
c0000000002eb4a8: a6 02 08 7c mflr r0
c0000000002eb4ac: d0 ff 41 fb std r26,-48(r1)
$ sudo ./perf probe do_sys_open
$ sudo cat /sys/kernel/debug/tracing/kprobe_events
p:probe/do_sys_open _text+3060904
$ sudo ./perf probe 'do_sys_open filename:string'
$ sudo cat /sys/kernel/debug/tracing/kprobe_events
p:probe/do_sys_open _text+3060896 filename_string=+0(%gpr4):string
For second case, perf probed on GEP. So when function will be called via
LEP, probe won't hit.
$ sudo ./perf record -a -e probe:do_sys_open ls
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.195 MB perf.data ]
To resolve this issue, let's not prioritize symbol table, let perf
decide what it wants to use. Perf is already converting GEP to LEP when
it uses symbol table. When perf uses debuginfo, let it find LEP offset
form symbol table. This way we fall back to probe on LEP for all cases.
After patch:
$ sudo ./perf probe 'do_sys_open filename:string'
$ sudo cat /sys/kernel/debug/tracing/kprobe_events
p:probe/do_sys_open _text+3060904 filename_string=+0(%gpr4):string
$ sudo ./perf record -a -e probe:do_sys_open ls
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.197 MB perf.data (11 samples) ]
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1470723805-5081-2-git-send-email-ravi.bangoria@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Instead of inline code, introduce function to post process kernel
probe trace events.
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1470723805-5081-1-git-send-email-ravi.bangoria@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Due to:
1e61f78baf89 ("x86/cpufeature: Make sure DISABLED/REQUIRED macros are updated")
No changes to tools using those headers (tools/arch/x86/lib/mem{set,cpu}_64.S)
seems necessary.
Detected by the tools build header drift checker:
$ make -C tools/perf O=/tmp/build/perf
make: Entering directory '/home/acme/git/linux/tools/perf'
BUILD: Doing 'make -j4' parallel build
GEN /tmp/build/perf/common-cmds.h
Warning: tools/arch/x86/include/asm/disabled-features.h differs from kernel
Warning: tools/arch/x86/include/asm/required-features.h differs from kernel
Warning: tools/arch/x86/include/asm/cpufeatures.h differs from kernel
CC /tmp/build/perf/util/probe-finder.o
CC /tmp/build/perf/builtin-help.o
<SNIP>
^C$
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Dave Hansen <dave.hansen@linux.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-ja75m7zk8j0jkzmrv16i5ehw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The way we're using kernel headers in tools/ now, with a copy that is
made to the same path prefixed by "tools/" plus checking if that copy
got stale, i.e. if the kernel counterpart changed, helps in keeping
track with new features that may be useful for tools to exploit.
For instance, looking at all the changes to bpf.h since it was last
copied to tools/include brings this to toolers' attention:
Need to investigate this one to check how to run a program via perf, setting up
a BPF event, that will take advantage of the way perf already calls clang/LLVM,
sets up the event and runs the workload in a single command line, helping in
debugging such semi cooperative programs:
96ae52279594 ("bpf: Add bpf_probe_write_user BPF helper to be called in tracers")
This one needs further investigation about using the feature it improves
in 'perf trace' to do some tcpdumpin' mixed with syscalls, tracepoints,
probe points, callgraphs, etc:
555c8a8623a3 ("bpf: avoid stack copy and use skb ctx for event output")
Add tracing just packets that are related to some container to that mix:
4a482f34afcc ("cgroup: bpf: Add bpf_skb_in_cgroup_proto")
4ed8ec521ed5 ("cgroup: bpf: Add BPF_MAP_TYPE_CGROUP_ARRAY")
Definetely needs to have example programs accessing task_struct from a bpf proggie
started from 'perf trace':
606274c5abd8 ("bpf: introduce bpf_get_current_task() helper")
Core networking related, XDP:
6ce96ca348a9 ("bpf: add XDP_TX xdp_action for direct forwarding")
6a773a15a1e8 ("bpf: add XDP prog type for early driver filter")
13c5c240f789 ("bpf: add bpf_get_hash_recalc helper")
d2485c4242a8 ("bpf: add bpf_skb_change_type helper")
6578171a7ff0 ("bpf: add bpf_skb_change_proto helper")
Changes detected by the tools build system:
$ make -C tools/perf O=/tmp/build/perf install-bin
make: Entering directory '/home/acme/git/linux/tools/perf'
BUILD: Doing 'make -j4' parallel build
Warning: tools/include/uapi/linux/bpf.h differs from kernel
INSTALL GTK UI
CC /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o
<SNIP>
$
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Brenden Blanco <bblanco@plumgrid.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Sargun Dhillon <sargun@sargun.me>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-difq4ts1xvww6eyfs9e7zlft@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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There were changes related to the deprecation of the "pcommit"
instruction:
fd1d961dd681 ("x86/insn: remove pcommit")
dfa169bbee00 ("Revert "KVM: x86: add pcommit support"")
No need to update anything in the tools, as "pcommit" wasn't being
listed on the VMX_EXIT_REASONS in the tools/perf/arch/x86/util/kvm-stat.c
file.
Just grab fresh copies of these files to silence the file cache
coherency detector:
$ make -C tools/perf O=/tmp/build/perf install-bin
make: Entering directory '/home/acme/git/linux/tools/perf'
BUILD: Doing 'make -j4' parallel build
Warning: tools/arch/x86/include/asm/cpufeatures.h differs from kernel
Warning: tools/arch/x86/include/uapi/asm/vmx.h differs from kernel
INSTALL GTK UI
<SNIP>
#
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Link: http://lkml.kernel.org/n/tip-07pmcc1ysydhyyxbmp1vt0l4@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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