Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

We got slightly different patches removing a double word
in a comment in net/ipv4/raw.c - picked the version from net.

Simple conflict

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

We got slightly different patches removing a double word
in a comment in net/ipv4/raw.c - picked the version from net.

Simple conflict in drivers/net/ethernet/ibm/ibmvnic.c. Use cached
values instead of VNIC login response buffer (following what
commit 507ebe6444a4 ("ibmvnic: Fix use-after-free of VNIC login
response buffer") did).

Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Merge tag 'perf-tools-fixes-for-v5.9-2020-09-03' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull more perf tools fixes from Arnaldo Carvalho de Melo:

- Use uintptr_t when casting

Merge tag 'perf-tools-fixes-for-v5.9-2020-09-03' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull more perf tools fixes from Arnaldo Carvalho de Melo:

- Use uintptr_t when casting numbers to pointers

- Keep output expected by 3rd parties: Turn off summary for interval
mode by default.

- BPF is in kernel space, make sure do_validate_kcore_modules() knows
about that.

- Explicitly call out event modifiers in the documentation.

- Fix jevents() allocation of space for regular expressions.

- Address libtraceevent build warnings on 32-bit arches.

- Fix checking of functions returns using ERR_PTR() in 'perf bench'.

* tag 'perf-tools-fixes-for-v5.9-2020-09-03' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
perf tools: Add bpf image check to __map__is_kmodule
perf record/stat: Explicitly call out event modifiers in the documentation
perf bench: The do_run_multi_threaded() function must use IS_ERR(perf_session__new())
perf stat: Turn off summary for interval mode by default
libtraceevent: Fix build warning on 32-bit arches
perf jevents: Fix suspicious code in fixregex()
perf parse-events: Use uintptr_t when casting numbers to pointers

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perf bench: The do_run_multi_threaded() function must use IS_ERR(perf_session__new())

In case of error, the function perf_session__new() returns ERR_PTR() and
never returns NULL. The NULL test in th

perf bench: The do_run_multi_threaded() function must use IS_ERR(perf_session__new())

In case of error, the function perf_session__new() returns ERR_PTR() and
never returns NULL. The NULL test in the return value check should be
replaced with IS_ERR()

Committer notes:

This wasn't compiling due to an extraneous '{' not matched by a '}', fix
it.

Fixes: 13edc237200c ("perf bench: Add a multi-threaded synthesize benchmark")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200902140526.26916-1-yuehaibing@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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Merge branch 'master' into for-next

Sync with Linus' branch in order to be able to apply fixups
of more recent patches.

Merge branch 'for-next' into for-linus

Merge tag 'irqchip-fixes-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent

Pull irqchip fixes from Marc Zyngier:

- Fix atomicity of affinity update in the G

Merge tag 'irqchip-fixes-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent

Pull irqchip fixes from Marc Zyngier:

- Fix atomicity of affinity update in the GIC driver
- Don't sleep in atomic when waiting for a GICv4.1 RD to respond
- Fix a couple of typos in user-visible messages

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Merge tag 'v5.8-rc3' into arm/qcom

Linux 5.8-rc3

Backmerge remote-tracking branch 'drm/drm-next' into drm-misc-next

Some conflicts with ttm_bo->offset removal, but drm-misc-next needs updating to v5.8.

Signed-off-by: Maarten Lankhorst <maarten.la

Backmerge remote-tracking branch 'drm/drm-next' into drm-misc-next

Some conflicts with ttm_bo->offset removal, but drm-misc-next needs updating to v5.8.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

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Merge drm/drm-next into drm-intel-next-queued

Catch up with upstream, in particular to get c1e8d7c6a7a6 ("mmap locking
API: convert mmap_sem comments").

Signed-off-by: Jani Nikula <jani.nikula@inte

Merge drm/drm-next into drm-intel-next-queued

Catch up with upstream, in particular to get c1e8d7c6a7a6 ("mmap locking
API: convert mmap_sem comments").

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

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Merge tag 'v5.8-rc1' into regulator-5.8

Linux 5.8-rc1

Merge tag 'v5.8-rc1' into fixes

Linux 5.8-rc1

Merge v5.8-rc1 into drm-misc-fixes

Beginning a new release cycles for what will become v5.8. Updating
drm-misc-fixes accordingly.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge branch 'dt/schema-cleanups' into dt/linus

Merge branch 'x86/entry' into ras/core

to fixup conflicts in arch/x86/kernel/cpu/mce/core.c so MCE specific follow
up patches can be applied without creating a horrible merge conflict
afterwards.

Merge tag 'perf-core-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf updates from Ingo Molnar:
"Kernel side changes:

- Add AMD Fam17h RAPL support

- Introduce

Merge tag 'perf-core-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf updates from Ingo Molnar:
"Kernel side changes:

- Add AMD Fam17h RAPL support

- Introduce CAP_PERFMON to kernel and user space

- Add Zhaoxin CPU support

- Misc fixes and cleanups

Tooling changes:

- perf record:

Introduce '--switch-output-event' to use arbitrary events to be
setup and read from a side band thread and, when they take place a
signal be sent to the main 'perf record' thread, reusing the core
for '--switch-output' to take perf.data snapshots from the ring
buffer used for '--overwrite', e.g.:

# perf record --overwrite -e sched:* \
--switch-output-event syscalls:*connect* \
workload

will take perf.data.YYYYMMDDHHMMSS snapshots up to around the
connect syscalls.

Add '--num-synthesize-threads' option to control degree of
parallelism of the synthesize_mmap() code which is scanning
/proc/PID/task/PID/maps and can be time consuming. This mimics
pre-existing behaviour in 'perf top'.

- perf bench:

Add a multi-threaded synthesize benchmark and kallsyms parsing
benchmark.

- Intel PT support:

Stitch LBR records from multiple samples to get deeper backtraces,
there are caveats, see the csets for details.

Allow using Intel PT to synthesize callchains for regular events.

Add support for synthesizing branch stacks for regular events
(cycles, instructions, etc) from Intel PT data.

Misc changes:

- Updated perf vendor events for power9 and Coresight.

- Add flamegraph.py script via 'perf flamegraph'

- Misc other changes, fixes and cleanups - see the Git log for details

Also, since over the last couple of years perf tooling has matured and
decoupled from the kernel perf changes to a large degree, going
forward Arnaldo is going to send perf tooling changes via direct pull
requests"

* tag 'perf-core-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (163 commits)
perf/x86/rapl: Add AMD Fam17h RAPL support
perf/x86/rapl: Make perf_probe_msr() more robust and flexible
perf/x86/rapl: Flip logic on default events visibility
perf/x86/rapl: Refactor to share the RAPL code between Intel and AMD CPUs
perf/x86/rapl: Move RAPL support to common x86 code
perf/core: Replace zero-length array with flexible-array
perf/x86: Replace zero-length array with flexible-array
perf/x86/intel: Add more available bits for OFFCORE_RESPONSE of Intel Tremont
perf/x86/rapl: Add Ice Lake RAPL support
perf flamegraph: Use /bin/bash for report and record scripts
perf cs-etm: Move definition of 'traceid_list' global variable from header file
libsymbols kallsyms: Move hex2u64 out of header
libsymbols kallsyms: Parse using io api
perf bench: Add kallsyms parsing
perf: cs-etm: Update to build with latest opencsd version.
perf symbol: Fix kernel symbol address display
perf inject: Rename perf_evsel__*() operating on 'struct evsel *' to evsel__*()
perf annotate: Rename perf_evsel__*() operating on 'struct evsel *' to evsel__*()
perf trace: Rename perf_evsel__*() operating on 'struct evsel *' to evsel__*()
perf script: Rename perf_evsel__*() operating on 'struct evsel *' to evsel__*()
...

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Merge tag 'perf-core-for-mingo-5.8-20200506' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf updates from Arnaldo:

perf/core improvements and fixes:

perf recor

Merge tag 'perf-core-for-mingo-5.8-20200506' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf updates from Arnaldo:

perf/core improvements and fixes:

perf record:

- Introduce --switch-output-event to use arbitrary events to be setup
and read from a side band thread and, when they take place a signal
be sent to the main 'perf record' thread, reusing the --switch-output
code to take perf.data snapshots from the --overwrite ring buffer, e.g.:

# perf record --overwrite -e sched:* \
--switch-output-event syscalls:*connect* \
workload

will take perf.data.YYYYMMDDHHMMSS snapshots up to around the
connect syscalls.

Stephane Eranian:

- Add --num-synthesize-threads option to control degree of parallelism of the
synthesize_mmap() code which is scanning /proc/PID/task/PID/maps and can be
time consuming. This mimics pre-existing behaviour in 'perf top'.

Intel PT:

Adrian Hunter:

- Add support for synthesizing branch stacks for regular events (cycles,
instructions, etc) from Intel PT data.

perf bench:

Ian Rogers:

- Add a multi-threaded synthesize benchmark.

- Add kallsyms parsing benchmark.

Tommi Rantala:

- Fix div-by-zero if runtime is zero.

perf synthetic events:

- Remove use of sscanf from /proc reading when parsing pre-existing
threads to generate synthetic PERF_RECORD_{FORK,MMAP,COMM,etc} events.

tools api:

- Add a lightweight buffered reading API.

libsymbols:

- Parse kallsyms using new lightweight buffered reading io API.

perf parse-events:

- Fix memory leaks found on parse_events.

perf mem2node:

- Avoid double free related to realloc().

perf stat:

Jin Yao:

- Zero all the 'ena' and 'run' array slot stats for interval mode.

- Improve runtime stat for interval mode

Kajol Jain:

- Enable Hz/hz printing for --metric-only option

- Enhance JSON/metric infrastructure to handle "?".

perf tests:

Kajol Jain:

- Added test for runtime param in metric expression.

Tommi Rantala:

- Fix data path in the session topology test.

perf vendor events power9:

Kajol Jain:

- Add hv_24x7 socket/chip level metric events

Coresight:

Leo Yan:

- Move definition of 'traceid_list' global variable from header file.

Mike Leach:

- Update to build with latest opencsd version.

perf pmu:

Shaokun Zhang:

- Fix function name in comment, its get_cpuid_str(), not get_cpustr()

Stephane Eranian:

- Add perf_pmu__find_by_type() helper

perf script:

Stephane Eranian:

- Remove extraneous newline in perf_sample__fprintf_regs().

Ian Rogers:

- Avoid NULL dereference on symbol.

tools feature:

Stephane Eranian:

- Add support for detecting libpfm4.

perf symbol:

Thomas Richter:

- Fix kernel symbol address display in TUI verbose mode.

perf cgroup:

Tommi Rantala:

- Avoid needless closing of unopened fd

libperf:

He Zhe:

- Add NULL pointer check for cpu_map iteration and NULL
assignment for all_cpus.

Ian Rogers:

- Fix a refcount leak in evlist method.

Arnaldo Carvalho de Melo:

- Rename the code in tools/perf/util, i.e. perf tooling specific, that
operates on 'struct evsel' to evsel__, leaving the perf_evsel__
namespace for the routines in tools/lib/perf/ that operate on
'struct perf_evsel__'.

tools/perf specific libraries:

Konstantin Khlebnikov:

- Fix reading new topology attribute "core_cpus"

- Simplify checking if SMT is active.

perf flamegraph:

Arnaldo Carvalho de Melo:

- Use /bin/bash for report and record scripts, just like all other
such scripts, fixing a package dependency bug in a Linaro
OpenEmbedded build checker.

perf evlist:

Jagadeesh Pagadala:

- Remove duplicate headers.

Miscelaneous:

Zou Wei:

- Remove unneeded semicolon in libtraceevent, 'perf c2c' and others.

- Fix warning assignment of 0/1 to bool variable in 'perf report'

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

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perf bench: Add a multi-threaded synthesize benchmark

By default this isn't run as it reads /proc and may not have access.
For consistency, modify the single threaded benchmark to compute an
average

perf bench: Add a multi-threaded synthesize benchmark

By default this isn't run as it reads /proc and may not have access.
For consistency, modify the single threaded benchmark to compute an
average time per event.

Committer testing:

$ grep -m1 "model name" /proc/cpuinfo
model name : Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
$ grep "model name" /proc/cpuinfo | wc -l
8
$
$ perf bench internals synthesize -h
# Running 'internals/synthesize' benchmark:

Usage: perf bench internals synthesize <options>

-I, --multi-iterations <n>
Number of iterations used to compute multi-threaded average
-i, --single-iterations <n>
Number of iterations used to compute single-threaded average
-M, --max-threads <n>
Maximum number of threads in multithreaded bench
-m, --min-threads <n>
Minimum number of threads in multithreaded bench
-s, --st Run single threaded benchmark
-t, --mt Run multi-threaded benchmark

$
$ perf bench internals synthesize -t
# Running 'internals/synthesize' benchmark:
Computing performance of multi threaded perf event synthesis by
synthesizing events on CPU 0:
Number of synthesis threads: 1
Average synthesis took: 65449.000 usec (+- 586.442 usec)
Average num. events: 9405.400 (+- 0.306)
Average time per event 6.959 usec
Number of synthesis threads: 2
Average synthesis took: 37838.300 usec (+- 130.259 usec)
Average num. events: 9501.800 (+- 20.469)
Average time per event 3.982 usec
Number of synthesis threads: 3
Average synthesis took: 48551.400 usec (+- 225.686 usec)
Average num. events: 9544.000 (+- 0.000)
Average time per event 5.087 usec
Number of synthesis threads: 4
Average synthesis took: 29632.500 usec (+- 50.808 usec)
Average num. events: 9544.000 (+- 0.000)
Average time per event 3.105 usec
Number of synthesis threads: 5
Average synthesis took: 33920.400 usec (+- 284.509 usec)
Average num. events: 9544.000 (+- 0.000)
Average time per event 3.554 usec
Number of synthesis threads: 6
Average synthesis took: 27604.100 usec (+- 72.344 usec)
Average num. events: 9548.000 (+- 0.000)
Average time per event 2.891 usec
Number of synthesis threads: 7
Average synthesis took: 25406.300 usec (+- 933.371 usec)
Average num. events: 9545.500 (+- 0.167)
Average time per event 2.662 usec
Number of synthesis threads: 8
Average synthesis took: 24110.400 usec (+- 73.229 usec)
Average num. events: 9551.000 (+- 0.000)
Average time per event 2.524 usec
$

Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrey Zhizhikin <andrey.z@gmail.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lore.kernel.org/lkml/20200415054050.31645-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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Merge tag 'perf-core-for-mingo-5.8-20200420' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

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

kernel +

Merge tag 'perf-core-for-mingo-5.8-20200420' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

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

kernel + tools/perf:

Alexey Budankov:

- Introduce CAP_PERFMON to kernel and user space.

callchains:

Adrian Hunter:

- Allow using Intel PT to synthesize callchains for regular events.

Kan Liang:

- Stitch LBR records from multiple samples to get deeper backtraces,
there are caveats, see the csets for details.

perf script:

Andreas Gerstmayr:

- Add flamegraph.py script

BPF:

Jiri Olsa:

- Synthesize bpf_trampoline/dispatcher ksymbol events.

perf stat:

Arnaldo Carvalho de Melo:

- Honour --timeout for forked workloads.

Stephane Eranian:

- Force error in fallback on :k events, to avoid counting nothing when
the user asks for kernel events but is not allowed to.

perf bench:

Ian Rogers:

- Add event synthesis benchmark.

tools api fs:

Stephane Eranian:

- Make xxx__mountpoint() more scalable

libtraceevent:

He Zhe:

- Handle return value of asprintf.

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

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perf bench: Add event synthesis benchmark

Event synthesis may occur at the start or end (tail) of a perf command.
In system-wide mode it can scan every process in /proc, which may add
seconds of lat

perf bench: Add event synthesis benchmark

Event synthesis may occur at the start or end (tail) of a perf command.
In system-wide mode it can scan every process in /proc, which may add
seconds of latency before event recording. Add a new benchmark that
times how long event synthesis takes with and without data synthesis.

An example execution looks like:

$ perf bench internals synthesize
# Running 'internals/synthesize' benchmark:
Average synthesis took: 168.253800 usec
Average data synthesis took: 208.104700 usec

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrey Zhizhikin <andrey.z@gmail.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lore.kernel.org/lkml/20200402154357.107873-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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