Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
User visible changes:
* Add period data column and make it default in 'perf script' (Jiri Olsa)
Infrastructure changes:
* Move exit stuff from perf_evsel__delete to perf_evsel__exit, delete
should be just a front end for exit + free (Arnaldo Carvalho de Melo)
* Add missing 'struct option' forward declaration (Arnaldo Carvalho de Melo)
* No need to drag util/cgroup.h into evsel.h (Arnaldo Carvalho de Melo)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
User visible changes:
* Add a visual cue for toggle zeroing of samples in 'perf top' (Taeung Song)
* Fix for double free in 'perf stat' when using some specific invalid
command line combo (Yasser Shalabi)
Infrastructure changes:
* Add option to copy events when queuing for sorting across cpu buffers
and enable it for 'perf kvm stat live', to avoid having events left
in the queue pointing to the ring buffer be rewritten in high volume
sessions. (Alexander Yarygin, improving work done by David Ahern):
* Document sysfs events/ interfaces (Cody P Schafer)
* Add support to new style format of kernel PMU event. (Kan Liang)
* Fix typos in perf/Documentation (Masanari Iida)
* Improve callchains when using libunwind (Namhyung Kim)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
Infrastructure fixes and changes:
* Fix off-by-one bugs in map->end handling (Stephane Eranian)
* Fix off-by-one bug in maps__find(), also related to map->end handling (Namhyung Kim)
* Make struct symbol->end be the first addr after the symbol range, to make it
match the convention used for struct map->end. (Arnaldo Carvalho de Melo)
* Fix perf_evlist__add_pollfd() error handling in 'perf kvm stat live' (Jiri Olsa)
* Fix python test build by moving callchain_param to an object linked into the
python binding (Jiri Olsa)
* Do not include a struct hists per perf_evsel, untangling the histogram code
from perf_evsel, to pave the way for exporting a minimalistic
tools/lib/api/perf/ library usable by tools/perf and initially by the rasd
daemon being developed by Borislav Petkov, Robert Richter and Jean Pihet.
(Arnaldo Carvalho de Melo)
* Make perf_evlist__open(evlist, NULL, NULL), i.e. without cpu and thread
maps mean syswide monitoring, reducing the boilerplate for tools that
only want system wide mode. (Arnaldo Carvalho de Melo)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
User visible changes:
* Fix mmap return address truncation to 32-bit in 'perf trace'. (Chang Hyun Park)
* Support operations for shared futexes. (Davidlohr Bueso)
* Fix error message for --filter option not coming after tracepoint. (Arnaldo Carvalho de Melo)
Infrastructure changes:
* Refactor unit and scale function parameters for PMU parsing routines. (Matt Fleming)
* Improve DSO long names lookup with rbtree, resulting in great speedup for
workloads with lots of DSOs. (Waiman Long)
* Fix build breakage on arm64 targets. (Will Deacon)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
User visible changes:
o Restore "--callchain graph" output, broken in recent cset to end
up being the same as "fractal" (Namhyung Kim)
o Allow profiling when kptr_restrict == 1 for non root users,
kernel samples will just remain unresolved (Andi Kleen)
o Allow configuring default options for callchains in config file (Namhyung Kim)
o Fix line number in the config file error message (Jiri Olsa)
o Fix --per-core on multi socket systems (Andi Kleen)
Cleanups:
o Use ACCESS_ONCE() instead of volatile cast. (Pranith Kumar)
o Modify error code for when perf_session__new() fails (Taeung Song)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf tooling updates from Arnaldo Carvalho de Melo.
Infrastructure changes:
* We were not handling POLLHUP notifications for event file descriptors.
Fix it by filtering entries in the events file descriptor array after
poll() returns, refcounting mmaps so that when the last fd pointing to
a perf mmap goes away we do the unmap. (Arnaldo Carvalho de Melo)
User visible changes:
* Now 'record' and 'trace' properly exit when a target thread exits.
(Arnaldo Carvalho de Melo)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull EFI fixes from Matt Fleming:
* Revert the static library changes from the merge window since they're
causing issues for Macbooks and Fedora + Grub2 (Matt Fleming)
* Delete the misleading "setup_efi_pci() failed!" message which some
people are seeing when booting EFI (Matt Fleming)
* Fix printing strings from the 32-bit EFI boot stub by only passing
32-bit addresses to the firmware (Matt Fleming)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull EFI fix from Matt Fleming:
* Increase the number of early_ioremap() slots to fix a regression with
earlyprintk=efi after recent changes to the ACPI code (Dave Young)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
User visible changes:
o Add +field argument support for --sort option (Jiri Olsa)
o Do not access kallsyms when analyzing user binaries with 'probe' (Masami Hiramatsu)
o Ignore stripped vmlinux and fallback to kallsyms (Anton Blanchard)
o Add path to Ubuntu kernel debuginfo file (Anton Blanchard)
o Disable kernel symbol demangling by default (Avi Kivity)
Infrastructure changes:
o More intel PT prep work, from Adrian Hunter, including:
- Let a user specify a PMU event without any config terms
- Add perf-with-kcore script
- Let default config be defined for a PMU
- Add perf_pmu__scan_file()
o "perf kvm stat report" improvements by Alexander Yarygin:
o Save pid string in opts.target.pid
o Enable the target.system_wide flag
o Unify the title bar output
o Fix build issue on powerpc when DWARF support is disabled (Anton Blanchard)
o Allow to specify lib compile variable for spec usage (Jiri Olsa)
o Fix build on ARM (Stephane Eranian)
o Fix build on powerpc when DWARF support is disabled (Anton Blanchard)
o Don't include sys/poll.h directly (Arnaldo Carvalho de Melo)
o Use ring buffer consume method to look like other tools (Arnaldo Carvalho de Melo)
o Allow to specify lib compile variable for spec usage (Jiri Olsa)
o Fix GNU-only grep usage in Makefile (John Spencer)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull EFI fixes from Matt Fleming:
* Fix early boot regression affecting x86 EFI boot stub when loading
initrds above 4GB - Yinghai Lu
* Relocate GOT entries in the x86 EFI boot stub now that we have
symbols with global visibility - Matt Fleming
* fdt memory reservation fix for arm64 - Mark Salter
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull an RCU fix from Paul E. McKenney:
"This series contains a single commit fixing an initialization bug
reported by Amit Shah and fixed by Pranith Kumar (and tested by Amit).
This bug results in a boot-time hang in callback-offloaded configurations
where callbacks were posted before the offloading ('rcuo') kthreads
were created."
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull nohz fixes from Frederic Weisbecker:
" The tick reschedules itself unconditionally. It's relevant in periodic
mode but not in dynticks mode where it results in spurious double clock
writes and even spurious periodic behaviour for low-res case.
This set fixes that:
* 1st patch removes low-res periodic tick rescheduling in nohz mode.
This fixes spurious periodic behaviour.
* 2nd patch does the same for high-res mode. Here there is no such
spurious periodic behaviour but it still spares a double clock write
in some cases. "
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
User visible changes:
* Don't try to find DSOs in SYSV maps (Don Zickus)
* Fallback to MAP__FUNCTION if daddr maps are NULL,
i.e. addresses get looked upon more maps (Don Zickus)
* Kernel fix to properly handle exited tasks, by returning POLLHUP values
on perf event file descriptors. Tooling changes will come next, but were
tested with this kernel fix. (Jiri Olsa)
* Add +field argument support for --field option, so that one can add
fields to the default list of fields to show, i.e. now one can just do:
perf report --fields +pid
And the pid will appear in addition to the default fields. (Jiri Olsa)
Infrastructure changes:
* More Intel PT prep stuff, including:
- Add a 'perf test' for tracking with sched_switch
- Add 'flush' callback to scripting API
* hists browser (used in top and report) refactorings, getting rid of unused
variables and reducing source code size by handling similar cases in a
fewer functions (Namhyung Kim).
* Explicitly include util/debug.h for powerpc, was being indirectly included,
broke the build when some change made it stop being included. (Sukadev
Bhattiprolu)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull EFI fixes from Matt Fleming:
* WARN_ON(!spin_is_locked()) always triggers on non-SMP machines.
Swap it for the more canonical lockdep_assert_held() which always
does the right thing - Guenter Roeck
* Assign the correct value to efi.runtime_version on arm64 so that all
the runtime services can be invoked - Semen Protsenko
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
User visible changes:
* Warn user to rebuild target with debuginfo in 'perf probe' (Masami Hiramatsu)
* Don't truncate Intel style addresses in 'annotate'. (Alex Converse)
Infrastructure changes:
* Annotate PMU related list_head members with type info. (Cody P Schafer)
* Add the triplet used for arm64 by Android (Elliott Hughes)
* Replace thread unsafe strerror() with strerror_r() accross the
whole tools/perf/ tree (Masami Hiramatsu)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/probe fixes and improvements from Arnaldo Carvalho de Melo:
User visible changes:
* Do not show +/- callchain expansion when there are no childs (top/report) (Namhyung Kim)
* Fix -z and add respective 'z' hotkey to zero samples before refresh
in 'perf top' (Namhyung Kim)
* Capability probing fixes, improving the detection of
kernel features for non-priviledged users (Adrian Hunter)
* Add beautifier for mremap flags param in 'trace' (Alex Snast)
* Fix --list and --del options to show events when just uprobes is
enabled (Masami Hiramatsu)
* perf script: Allow callchains if any event samples them
* Don't look for kernel idle symbols in all DSOs in 'perf top' (Arnaldo Carvalho de Melo)
* Add cpu_startup_entry to the list of kernel idle symbols (Arnaldo Carvalho de Melo)
* 'perf top' terminal output fixes (Jiri Olsa)
* Fix stdin handling for 'perf kvm stat live' (Jiri Olsa)
* Fix missing label symbols (Adrian Hunter)
* Don't demangle C++ parameters and such by default, only in
--verbose mode (Namhyung Kim)
* Set proper sort__mode for the branch option (Naohiro Aota)
* Check recorded kernel version when finding vmlinux (Namhyung Kim)
Infrastructure changes:
* More prep work for intel PT (Adrian Hunter)
* Fix possible memory leaks (Namhyung Kim)
* Fix a memory leak in vmlinux_path__init() (Namhyung Kim)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
User visible fixes and changes:
* Show better error message in case we fail to open counters due to EBUSY error,
for instance, when oprofile is running. (Jiri Olsa)
* Honour -w in the report tools (report, top), allowing to specify the widths
for the histogram entries columns. (Namhyung Kim)
* Don't run workload if not told to, as happens when the user has no
permission for profiling and even then the specified workload ends
up running (Arnaldo Carvalho de Melo)
* Do not ignore mmap events in 'perf kmem report'. This tool was using
the kernel mmaps in the running machine instead of processing the mmap
records from the perf.data file. (Namhyung Kim)
* Properly show submicrosecond times in 'perf kvm stat' (Christian Borntraeger)
* Honour existing 'perf record' --time/-T command line option (Andi Kleen)
* Make sure --symfs usage includes the path separator (Arnaldo Carvalho de Melo)
Development infrastructure fixes and changes:
* Fix arm64 build error (Mark Salter)
* Fix make PYTHON override (Namhyung Kim)
* Rename ordered_samples to ordered_events and allow setting a queue
size for ordering events (Jiri Olsa)
* Default to python version 2 (Thomas Ilsche)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
Infrastructure changes:
o More prep work to support Intel PT: (Adrian Hunter)
- Polishing 'script' BTS output
- 'inject' can specify --kallsym
- VDSO is per machine, not a global var
- Expose data addr lookup functions previously private to 'script'
- Large mmap fixes in events processing
o Fix build on gcc 4.4.7 (Arnaldo Carvalho de Melo)
o Event ordering fixes (Jiri Olsa)
o Include standard stringify macros in power pc code (Sukadev Bhattiprolu)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Jiri Olsa:
. Update attr test with PERF_FLAG_FD_CLOEXEC flag (Jiri Olsa)
. Enable close-on-exec flag on perf file descriptor (Yann Droneaud)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
User visible changes:
o Support S/390 in 'perf kvm stat' (Alexander Yarygin)
Developer Stuff:
o Various fixes and prep work related to supporting Intel PT (Adrian Hunter)
o Introduce multiple debug variables control (Jiri Olsa)
o Add callchain and additional sample information for python scripts (Joseph Schuchart)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
User visible changes:
o Prep patches to support 'perf kvm stat' on s390 (Alexander Yarygin)
o Add pagefault statistics in 'trace' (Stanislav Fomichev)
o Add header for columns in 'top' and 'report' TUI browsers (Jiri Olsa)
o Add pagefault statistics in 'trace' (Stanislav Fomichev)
Build fixes:
o Fix build on 32-bit systems (Arnaldo Carvalho de Melo)
Cleanups:
o Convert open coded equivalents to asprintf() (Andy Shevchenko)
Plumbing changes:
o Allow reserving a row for header purposes in the hists browser (Arnaldo Carvalho de Melo)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Jiri Olsa:
* Handle the num array type in python properly (Sebastian Andrzej Siewior)
* Fix wrong condition for allocation failure (Jiri Olsa)
* Adjust callchain based on DWARF debug info on powerpc (Sukadev Bhattiprolu)
* Fix a risk for doing free on uninitialized pointer in traceevent lib (Rickard Strandqvist)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
New features:
* Add support for pagefault tracing in 'trace', please see multiple examples
in the changeset messages (Stanislav Fomichev).
User visible changes:
* Fallback to syscalls:* when raw_syscalls:* is not available in the perl and
python perf scripts. (Daniel Bristot de Oliveira)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Jiri Olsa:
* Updates from trace-cmd for traceevent plugin_kvm plus args cleanup (Steven Rostedt, Jan Kiszka)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
User visible changes:
* Add --repeat global option to 'perf bench' to be used in benchmarks
such as the existing 'futex' one, that was modified to use it instead
of a local option. (Davidlohr Bueso)
* Fix fd -> pathname resolution in 'trace', be it using /proc or
a vfs_getname probe point. (Arnaldo Carvalho de Melo)
* Add suggestion of how to set perf_event_paranoid sysctl, to help
non-root users trying tools like 'trace' to get a working environment.
(Arnaldo Carvalho de Melo)
Fixes:
* Fix memory leak in the 'sched-messaging' perf bench test. (Davidlohr Bueso)
* The -o and -n 'perf bench mem' options are mutually exclusive, emit error
when both are specified. (Davidlohr Bueso)
* Fix scrollbar refresh row index in the ui browser, problem exposed now
that headers will be added and will be allowed to be switched on/off.
(Jiri Olsa)
Cleanups:
* Remove needless reassignments in 'trace' (Arnaldo Carvalho de Melo)
* Cache the is_exit syscall test in 'trace) (Arnaldo Carvalho de Melo)
* No need to reimplement err() in 'perf bench sched-messaging', drop barf().
(Davidlohr Bueso).
* Remove ev_name argument from perf_evsel__hists_browse, can be obtained
from the other parameters. (Jiri Olsa)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull RCU fixes from Paul E. McKenney:
" This series includes the following:
1. Export a pair of debug-object interfaces for RCU that will
allow the slab allocators to avoid a recursion bug located
by Sasha Levin. Strictly speaking, this is not a regression,
but it would be good to enable the fix.
2. Address a serious performance regression on an open/close
micro-benchmark located by Dave Hansen. The offending commit
is ac1bea8578 (Make cond_resched() report RCU quiescent states). "
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull nohz updates from Frederic Weisbecker:
" This set moves the nohz kick, used to notify a full dynticks CPU when
events require tick rescheduling, out of the scheduler tick to a
dedicated IPI.
This debloats a bit the scheduler IPI from off-topic work that was
abusing that scheduler fast path for its convenient asynchronous
properties. Now the nohz kick uses irq-work for its own needs.
Of course this implied quite some background infrastructure rework,
including:
* Clean up some irq-work internals
* Implement remote irq-work
* Implement nohz kick on top of remote irq-work
* Move full dynticks timer enqueue notification to new kick
* Move multi-task notification to new kick
* Remove unecessary barriers on multi-task notification
"
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements from Arnaldo Carvalho de Melo:
User visible:
* Improve 'perf probe' error messages, moving some diagnostic messages to
only appear in --verbose mode and fixing up some error reporting related
to variables and struct members. (Masami Hiramatsu)
* Reflow 'perf timechart' man page. (Stanislav Fomichev)
Developer stuff:
* Be more precise when reporting missing libraries in a static tool build.
(Arnaldo Carvalho de Melo)
* Show error messages from the multiple make invoked from 'make build-test'.
(Arnaldo Carvalho de Melo)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Fix this dependency on the locking tree's smp_mb*() API changes:
kernel/sched/idle.c:247:3: error: implicit declaration of function ‘smp_mb__after_atomic’ [-Werror=implicit-function-declaration]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Jiri Olsa:
* Warn the user when trace command is not available (Arnaldo Carvalho de Melo)
* Add warning when disabling perl scripting support due to missing devel files (Arnaldo Carvalho de Melo)
* Consider header files outside perf directory in tags target (Sebastian Andrzej Siewior)
* Allow overriding sysfs and proc finding with env var (Cody P Schafer)
* Fix "==" into "=" in ui_browser__warning assignment (zhangdianfang)
* Factor elide bool handling in sort code (Jiri Olsa)
* Fix poll return value propagation (Jiri Olsa)
* Fix 'make help' message error (Jianyu Zhan)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/urgent fixes from Jiri Olsa:
* Fix perf probe to find correct variable DIE (Masami Hiramatsu)
* Fix a segfault in perf probe if asked for variable it doesn't find (Masami Hiramatsu)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Jiri Olsa:
* Add support to accumulate hist periods (Namhyung Kim)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull uprobes fixes and changes from Oleg Nesterov:
" Denys found another nasty old bug in uprobes/x86: div, mul, shifts with
count in CL, and cmpxchg are not handled correctly.
Plus a couple of other minor fixes. Nobody acked the changes in x86/traps,
hopefully they are simple enough, and I believe that they make sense anyway
and allow to do more cleanups."
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull RCU updates from Paul E. McKenney:
" 1. Update RCU documentation. These were posted to LKML at
https://lkml.org/lkml/2014/4/28/634.
2. Miscellaneous fixes. These were posted to LKML at
https://lkml.org/lkml/2014/4/28/645.
3. Torture-test changes. These were posted to LKML at
https://lkml.org/lkml/2014/4/28/667.
4. Variable-name renaming cleanup, sent separately due to conflicts.
This was posted to LKML at https://lkml.org/lkml/2014/5/13/854.
5. Patch to suppress RCU stall warnings while sysrq requests are
being processed. This patch is the RCU portions of the patch
that Rik posted to LKML at https://lkml.org/lkml/2014/4/29/457.
The reason for pushing this patch ahead instead of waiting until
3.17 is that the NMI-based stack traces are messing up sysrq
output, and in some cases also messing up the system as well."
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Jiri Olsa:
* Add libdw DWARF post unwind support for ARM (Jean Pihet)
* Consolidate types.h for ARM and ARM64 (Jean Pihet)
* Fix possible null pointer dereference in session.c (Masanari Iida)
* Cleanup, remove unused variables in map_switch_event() (Dongsheng Yang)
* Remove nr_state_machine_bugs in perf latency (Dongsheng Yang)
* Remove usage of trace_sched_wakeup(.success) (Peter Zijlstra)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Jiri Olsa:
* Propagate exit status of a command line workload for
record command (Namhyung Kim)
* Use tid for finding thread (Namhyung Kim)
* Clarify the output of perf sched map plus small sched
command fixies (Dongsheng Yang)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull uprobes updates from Oleg Nesterov:
"This hopefully completes the previous 'fix the handling of relative
jmp/call's' series, all changes except the last 3 unrelated fixes try
to address TODO's mentioned in the changelogs."
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull EFI fix from Matt Fleming:
" * Fix earlyprintk=efi,keep support by switching to an ioremap() mapping
of the framebuffer when early_ioremap() is no longer available and
dropping __init from functions that may be invoked after
free_initmem() - Dave Young "
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Jiri Olsa:
* Wire up perf_regs and unwind support for ARM64 (Jean Pihet)
* Move u64_swap union to its single user's header, evsel.h (Borislav Petkov)
* Fix for s390 to properly parse tracepoints plus test code (Alexander Yarygin)
* Handle EINTR error for readn/writen (Namhyung Kim)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/urgent fixes from Jiri Olsa:
* Fix perf to use non-executable stack, again (Mathias Krause)
* Remove extra '/' character in events file path (Xia Kaixu)
* Search for modules in %s/lib/modules/%s (Richard Yao)
* Build related fixies plus static build test (Jiri Olsa)
* Fix stack map lookup in dwarf unwind test (Jiri Olsa)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Jiri Olsa:
* Add a test case for hists filtering (Namhyung Kim)
* Share map_groups among threads of the same group (Arnaldo Carvalho de Melo, Jiri Olsa)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Jiri Olsa:
* Factor hists statistics counts processing which in turn also
fixes several bugs in TUI report command (Namhyung Kim)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/urgent fixes from Jiri Olsa:
* Fix memory leak and backward compatibility macros for pevent
filter enums in traceevent library (Steven Rostedt)
* Disable libdw unwind for all but x86 arch (Jiri Olsa)
* Fix memory leak in sample_ustack (Masanari Iida)
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Jiri Olsa:
Infrastructure changes:
* Making some code (cpu node map and report parse callchain callback) global
to be usable by upcomming changes (Don Zickus)
* Fix pmu object compilation error (Jiri Olsa)
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/urgent fixes from Jiri Olsa:
User visible changes:
* Adjust symbols in VDSO to properly resolve its function names (Vladimir Nikulichev)
* Improve error reporting for record session failure (Adrien BAK)
* Fix 'Min time' counting in report command (Alexander Yarygin)
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull uprobes fixes and cleanups from Oleg Nesterov:
"Any probed jmp/call can kill the application, see the changelog in 11/15."
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The following commit:
27f6c573e0 ("x86, CMCI: Add proper detection of end of CMCI storms")
Added two preemption bugs:
- machine_check_poll() does a get_cpu_var() without a matching
put_cpu_var(), which causes preemption imbalance and crashes upon
bootup.
- it does percpu ops without disabling preemption. Preemption is not
disabled due to the mistaken use of a raw spinlock.
To fix these bugs fix the imbalance and change
cmci_discover_lock to a regular spinlock.
Reported-by: Owen Kibel <qmewlo@gmail.com>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Chen, Gong <gong.chen@linux.intel.com>
Cc: Josh Boyer <jwboyer@fedoraproject.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Alexander Todorov <atodorov@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/n/tip-jtjptvgigpfkpvtQxpEk1at2@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
--
arch/x86/kernel/cpu/mcheck/mce.c | 4 +---
arch/x86/kernel/cpu/mcheck/mce_intel.c | 18 +++++++++---------
2 files changed, 10 insertions(+), 12 deletions(-)
Pull perf/core improvements and fixes from Jiri Olsa:
User visible changes:
* Add --percentage option to control absolute/relative percentage output (Namhyung Kim)
Plumbing changes:
* Add --list-cmds to 'kmem', 'mem', 'lock' and 'sched', for use by completion scripts (Ramkumar Ramachandra)
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Steve reported a reboot hang and bisected it back to this commit:
a4f1987e4c x86, reboot: Add EFI and CF9 reboot methods into the default list
He heroically tested all reboot methods and found the following:
reboot=t # triple fault ok
reboot=k # keyboard ctrl FAIL
reboot=b # BIOS ok
reboot=a # ACPI FAIL
reboot=e # EFI FAIL [system has no EFI]
reboot=p # PCI 0xcf9 FAIL
And I think it's pretty obvious that we should only try PCI 0xcf9 as a
last resort - if at all.
The other observation is that (on this box) we should never try
the PCI reboot method, but close with either the 'triple fault'
or the 'BIOS' (terminal!) reboot methods.
Thirdly, CF9_COND is a total misnomer - it should be something like
CF9_SAFE or CF9_CAREFUL, and 'CF9' should be 'CF9_FORCE' ...
So this patch fixes the worst problems:
- it orders the actual reboot logic to follow the reboot ordering
pattern - it was in a pretty random order before for no good
reason.
- it fixes the CF9 misnomers and uses BOOT_CF9_FORCE and
BOOT_CF9_SAFE flags to make the code more obvious.
- it tries the BIOS reboot method before the PCI reboot method.
(Since 'BIOS' is a terminal reboot method resulting in a hang
if it does not work, this is essentially equivalent to removing
the PCI reboot method from the default reboot chain.)
- just for the miraculous possibility of terminal (resulting
in hang) reboot methods of triple fault or BIOS returning
without having done their job, there's an ordering between
them as well.
Reported-and-bisected-and-tested-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Li Aubrey <aubrey.li@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Link: http://lkml.kernel.org/r/20140404064120.GB11877@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/urgent fixes from Jiri Olsa:
* Instead of redirecting flex output, use -o (Cody P Schafer)
* Fix double free in perf test 21 (Adrian Hunter)
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull liblockdep fixes from Sasha Levin:
" 1. There was a build breakage caused by marking a function 'asmlinkage'
in lockdep.h. Fix that by ignoring asmlinkage and visible annotations.
2. Josh Boyer mentioned that Fedora would like to include liblockdep
as a package, so we had to fix our versioning methods from being dumb
and pointless to something actually usable. So now liblockdep.so tracks
the kernel version which makes lives of distro folks much easier. "
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull EFI fixes from Matt Fleming:
"* Fix EFI boot regression introduced during the merge window where the
firmware was reading random values from the stack because we were
passing a pointer to the wrong object type.
* Kernel corruption has been reported when booting with the EFI boot
stub which was tracked down to setting a bogus value for
bp->hdr.code32_start, resulting in corruption during relocation.
* Olivier Martin reported that the wrong file handles were being passed
to efi_file_(read|close), which works for x86 by luck due to the way
that the FAT driver is implemented, but doesn't work on ARM."
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull RAS/CMCI storm code fix from Tony Luck:
"Fix the code to tell when a CMCI storm ends by actually
looking at the machine check banks when we poll while
interrupts are disabled."
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull RCU update from Paul E. McKenney:
" [...] one late-breaking commit. This one was requested for 3.15 by Peter Zijlstra.
It is low risk because it adds a new in-kernel API with minimal changes to the
existing code. Those minimal changes are the addition of memory barriers and
ACCESS_ONCE() macro calls, neither of which should be able to break things.
This commit has passed significant rcutorture testing, with these additional
additions to rcutorture slated for 3.16. This commit has also been exposed to
-next testing. "
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf/core improvements and fixes from Arnaldo:
User visible:
* Fixup header alignment in 'perf sched latency' output (Ramkumar Ramachandra)
* Fix off-by-one error in 'perf timechart record' argv handling (Ramkumar Ramachandra)
* Print the evsel name in the annotate stdio output, prep to fix support
outputting annotation for multiple events, not just for the first one
(Arnaldo Carvalho de Melo)
Internals:
* Use tid in mmap/mmap2 events to find maps (Don Zickus)
* Record the reason for filtering an address_location (Namhyung Kim)
* Apply all filters to an addr_location (Namhyung Kim)
* Merge al->filtered with hist_entry->filtered in report/hists (Namhyung Kim)
* Fix memory leak when synthesizing thread records (Namhyung Kim)
* Use ui__has_annotation() in 'report' (Namhyung Kim)
Cleanups:
* Remove unused thread__find_map function (Jiri Olsa)
* Remove unused simple_strtoul() function (Ramkumar Ramachandra)
Documentation:
* Update function names in debug messages (Ramkumar Ramachandra)
* Update some code references in design.txt (Ramkumar Ramachandra)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull two 'perf bench' fixes from Arnaldo:
* Make 'perf bench mem' (i.e. no args) mean 'run all tests' so that we can run
all tests, not stopping at the numa ones. (Arnaldo Carvalho de Melo)
* Fix NULL pointer dereference after last test in in "perf bench all" (Patrick Palka)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar