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Jiri Olsa [Sun, 10 Jul 2016 11:08:00 +0000 (13:08 +0200)]
perf python: Add support to resolve tracepoint fields
Adding tp_getattro callback for sample event. It resolves tracepoint
fields in runtime.
It's now possible to access tracepoint fields in normal fashion like
hardcoded ones (see the example in the next patch).
Reported-and-Tested-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1468148882-10362-9-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Sun, 10 Jul 2016 11:07:59 +0000 (13:07 +0200)]
perf python: Add struct evsel into struct pyrf_event
To be able to find out event configuration info during sample parsing.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1468148882-10362-8-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Sun, 10 Jul 2016 11:07:58 +0000 (13:07 +0200)]
perf python: Add perf.tracepoint method
To get id of the tracepoint from subsystem and name strings. The
interface is:
id = perf.tracepoint(sys, name)
In case of error -1 is returned.
It will be used to get python tracepoint event's config value for
tracepoint event.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1468148882-10362-7-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Sun, 10 Jul 2016 11:07:57 +0000 (13:07 +0200)]
perf python: Put perf.event objects into dictionary
Make perf.event object parts of the perf module dictionary so we can
address them by name.
The following objects/names are added:
mmap_event
lost_event
comm_event
task_event
throttle_event
task_event
read_event
sample_event
switch_event
We can now use it in python script like:
...
event = evlist.read_on_cpu(cpu)
...
if not isinstance(event, perf.sample_event):
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1468148882-10362-6-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Sun, 10 Jul 2016 11:07:56 +0000 (13:07 +0200)]
perf python: Fix pyrf_evlist__read_on_cpu event consuming
We can't consume the event before parsing it. Under heavy load we could
get caught by kernel writer overwriting the event we're trying to parse.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1468148882-10362-5-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Sun, 10 Jul 2016 11:07:55 +0000 (13:07 +0200)]
perf python: Init perf_event_attr::size in perf.evsel constructor
Currently 0 is passed as perf_event_attr::size, which could block usage
of new features.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1468148882-10362-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Sun, 10 Jul 2016 11:07:54 +0000 (13:07 +0200)]
perf tools: Introduce trace_event__tp_format_id()
To get struct event_format object from tracepoint ID. It will be used
in following patches.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1468148882-10362-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Sun, 10 Jul 2016 11:07:53 +0000 (13:07 +0200)]
perf evlist: Make event2evsel public
It will be used outside of evlist.c object in folowing patches.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1468148882-10362-2-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
David Tolnay [Sat, 9 Jul 2016 07:20:00 +0000 (00:20 -0700)]
perf symbols: Add Rust demangling
Rust demangling is another step after bfd demangling. Add a diagnosis to
identify mangled Rust symbols based on the hash that the Rust mangler appends
as the last path component, as well as other characteristics. Add a demangler
to reconstruct the original symbol.
Committer notes:
How I tested it:
Enabled COPR on Fedora 24 and then installed the 'rust-binary' package,
with it:
$ cat src/main.rs
fn main() {
println!("Hello, world!");
}
$ cat Cargo.toml
[package]
name = "hello_world"
version = "0.0.1"
authors = [ "Arnaldo Carvalho de Melo <acme@kernel.org>" ]
$ perf record cargo bench
Compiling hello_world v0.0.1 (file:///home/acme/projects/hello_world)
Running target/release/hello_world-
d4b9dab4b2a47d75
running 0 tests
test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.096 MB perf.data (1457 samples) ]
$
Before this patch:
$ perf report --stdio --dsos librbml-
e8edd0fd.so
# dso: librbml-
e8edd0fd.so
#
# Total Lost Samples: 0
#
# Samples: 1K of event 'cycles:u'
# Event count (approx.):
979599126
#
# Overhead Command Symbol
# ........ ....... .............................................................................................................
#
1.78% rustc [.] rbml::reader::maybe_get_doc::hb9d387df6024b15b
1.50% rustc [.] _$LT$reader..DocsIterator$LT$$u27$a$GT$$u20$as$u20$std..iter..Iterator$GT$::next::hd9af9e60d79a35c8
1.20% rustc [.] rbml::reader::doc_at::hc88107fba445af31
0.46% rustc [.] _$LT$reader..TaggedDocsIterator$LT$$u27$a$GT$$u20$as$u20$std..iter..Iterator$GT$::next::h0cb40e696e4bb489
0.35% rustc [.] rbml::reader::Decoder::_next_int::h66eef7825a398bc3
0.29% rustc [.] rbml::reader::Decoder::_next_sub::h8e5266005580b836
0.15% rustc [.] rbml::reader::get_doc::h094521c645459139
0.14% rustc [.] _$LT$reader..Decoder$LT$$u27$doc$GT$$u20$as$u20$serialize..Decoder$GT$::read_u32::h0acea2fff9669327
0.07% rustc [.] rbml::reader::Decoder::next_doc::h6714d469c9dfaf91
0.07% rustc [.] _ZN4rbml6reader10doc_as_u6417h930b740aa94f1d3aE@plt
0.06% rustc [.] _fini
$
After:
$ perf report --stdio --dsos librbml-
e8edd0fd.so
# dso: librbml-
e8edd0fd.so
#
# Total Lost Samples: 0
#
# Samples: 1K of event 'cycles:u'
# Event count (approx.):
979599126
#
# Overhead Command Symbol
# ........ ....... .................................................................
#
1.78% rustc [.] rbml::reader::maybe_get_doc
1.50% rustc [.] <reader::DocsIterator<'a> as std::iter::Iterator>::next
1.20% rustc [.] rbml::reader::doc_at
0.46% rustc [.] <reader::TaggedDocsIterator<'a> as std::iter::Iterator>::next
0.35% rustc [.] rbml::reader::Decoder::_next_int
0.29% rustc [.] rbml::reader::Decoder::_next_sub
0.15% rustc [.] rbml::reader::get_doc
0.14% rustc [.] <reader::Decoder<'doc> as serialize::Decoder>::read_u32
0.07% rustc [.] rbml::reader::Decoder::next_doc
0.07% rustc [.] _ZN4rbml6reader10doc_as_u6417h930b740aa94f1d3aE@plt
0.06% rustc [.] _fini
$
Signed-off-by: David Tolnay <dtolnay@gmail.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/5780B7FA.3030602@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 15:19:09 +0000 (12:19 -0300)]
perf tools: Add feature detection for gelf_getnote()
That is not present on some libelf implementations, such as the one used
in Alpine Linux: libelf-0.8.13.
This ends up disabling the SDT code, that relies on this function.
One alternative would be to provide an weak fallback implementation or
the open coded variant used by the buildid sysfs notes reading code.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@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/n/tip-82lh22ybedy9b9lych8xj12g@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 15:16:35 +0000 (12:16 -0300)]
perf intel-pt-decoder: Avoid checking code drift on busibox's diff
That doesn't have -I to match lines.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-7nz9hnbk7a9p91ou927ye5yh@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 02:39:58 +0000 (23:39 -0300)]
perf tools: Don't add kernel directories to the header search path
We've decided not to access kernel source files because changes there
could break the tooling side, this is one more step in that direction.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-ar0hupkxl45h5hk09l2rprj3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 14:31:39 +0000 (11:31 -0300)]
perf tools: Add the tools/ stringify copy to the MANIFEST
So that we don't end up using the kernel one when building out of tree,
via a detached tarball.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Fixes:
737ef7d32cb4 ("tools include: Copy linux/stringify.h from the kernel")
Link: http://lkml.kernel.org/n/tip-t8yn1d7y0magk889ymc8jlai@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 14:12:18 +0000 (11:12 -0300)]
tools: Copy the bitsperlong.h files from the kernel
We use it in bitops/__ffs.h and bitops/atomic.h, that we also got from
the kernel, but were getting it from either newer systems that carry it
in /usr/include, or from the kernel sources, that we decided not to
touch from tools/ code. Fix it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-lwqvgbuitjmrdpjmjp6zqnyx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 14:05:26 +0000 (11:05 -0300)]
perf script python: Silence -Werror=maybe-uninitialized on gcc 5.3.0
Sounds like a compiler bug, but to silence it, initialize those
variables to NULL.
Noticed on:
Target: x86_64-alpine-linux-musl
Configured with: /home/buildozer/aports/main/gcc/src/gcc-5.3.0/configure
--prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info
--build=x86_64-alpine-linux-musl --host=x86_64-alpine-linux-musl
--target=x86_64-alpine-linux-musl --with-pkgversion='Alpine 5.3.0'
--enable-checking=release --disable-fixed-point --disable-libstdcxx-pch
--disable-multilib --disable-nls --disable-werror --disable-symvers
--enable-__cxa_atexit --enable-esp --enable-cloog-backend
--enable-languages=c,c++,objc,java,fortran,ada --disable-libssp
--disable-libmudflap --disable-libsanitizer --enable-shared
--enable-threads --enable-tls --with-system-zlib
Thread model: posix
gcc version 5.3.0 (Alpine 5.3.0)
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-zyvsjvbl45o7hzcuz78wu2xi@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 14:04:13 +0000 (11:04 -0300)]
perf symbols: Provide a GElf_Nhdr typedef
This one can be safely defined to be Elf64_Nhdr, as it is in elfutils's
libelf, but not on musl libc, as both Elf64_Nhdr and Elf32_Nhdr have
the same layout.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-w8z8614l03lc8bip4ijbywbt@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 14:03:20 +0000 (11:03 -0300)]
perf trace beauty seccomp: Remove seccomp.h include
All we need from it is already conditionally defined, and this header
file is not present in older systems, so ditch it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-3jxpz9gwahk4e7ltqtnr1rjg@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 14:02:37 +0000 (11:02 -0300)]
perf trace beauty futex_op: Add missing defines for older systems
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-6qkuhv2mrcxmpy5sasc3c9tf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 14:01:17 +0000 (11:01 -0300)]
perf tools: Fallback to reading sysfs to get cacheline size
On systems where sysconf(_SC_LEVEL1_DCACHE_LINESIZE) is not available,
such as musl LIBC and Android's bionic libc.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Chris Phlipot <cphlipot0@gmail.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-772obxzby758g7m2wmzcejxz@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 13:57:25 +0000 (10:57 -0300)]
tools: Copy the header files needed by perf tools
Those kernel files were being directly accessed, which we're not
allowing anymore to avoid that changes in the kernel side break tooling.
Warn if these copies drift from the original files.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Cc: Christoffer Dall <christoffer.dall@linaro.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Eric Auger <eric.auger@linaro.org>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: Yunlong Song <yunlong.song@huawei.com>
Link: http://lkml.kernel.org/n/tip-mnopguymhnwzjhw3mowllvsy@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 13:54:45 +0000 (10:54 -0300)]
kvm arm/arm64: Remove trailing whitespace from headers
Noticed while making a copy of these files to tools/ where those kernel
files were being directly accessed, which we're not allowing anymore to
avoid that changes in the kernel side break tooling.
Cc: Christoffer Dall <christoffer.dall@linaro.org>
Cc: Eric Auger <eric.auger@linaro.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-82thftcdhj2j5wt6ir4vuyhk@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 13:44:40 +0000 (10:44 -0300)]
perf trace: Remove unused sys/ptrace.h include
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-ogtjqc0hxm961djgiwboe2q7@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 13:30:39 +0000 (10:30 -0300)]
perf tools: Remove unneeded magic.h include from util.h
Not used anymore, IIRC it was for useless PROC_FS_MAGIC procfs checks,
but those are long gone.
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-v027did3kvj0vz7bofgzkw29@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 13:29:31 +0000 (10:29 -0300)]
perf tools: Introduce weak alternative to sched_getcpu()
Which is just a wrapper for sys_getcpu and is not present in at least
musl libc.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-kblef7svmhr0g93kkx78envg@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 02:37:18 +0000 (23:37 -0300)]
tools: Copy uapi/linux/hw_breakpoint.h from the kernel
To allow the build to complete on older systems, where those files are
either not uptodate, lacking some recent additions or not present at
all.
And check if the copy drifts from the kernel.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-3jz31pz4nw526uko5da9e7o3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 02:22:30 +0000 (23:22 -0300)]
perf test bpf: Use epoll_wait() instead of epoll_pwait()
The prototype for epoll_wait() is available in older distros, so use it
instead of epoll_pwait() (removing the last NULL arg, the sigmask,
makes it the same thing anyway) to avoid breaking the build.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-pwiwizloxt0jujy8em80qut3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 12 Jul 2016 00:16:52 +0000 (21:16 -0300)]
tools: Copy uapi/asm/perf_regs.h from the kernel
To allow the build to complete on older systems, where those files are
either not uptodate, lacking some recent additions or not present at
all.
And check if the copy drifts from the kernel.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-sxf7rpow2blsno5f7t6n0sqz@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Mon, 11 Jul 2016 19:38:05 +0000 (16:38 -0300)]
tools lib bpf: Copy bpf.h and bpf_common.h from the kernel
To allow the build to complete on older systems, where those files are
either not uptodate, lacking some recent additions or not present at
all.
And check if the copy drifts from the kernel, as in this synthetic test:
BUILD: Doing 'make -j4' parallel build
Warning: tools/include/linux/bpf.h differs from kernel
Warning: tools/include/linux/bpf_common.h differs from kernel
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-5plvi2gq4x469dcyybiu226q@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Mon, 11 Jul 2016 15:36:41 +0000 (12:36 -0300)]
perf bench: Copy kernel files needed to build mem{cpy,set} x86_64 benchmarks
We can't access kernel files directly from tools/, so copy the required
bits, and make sure that we detect when the original files, in the
kernel, gets modified.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-z7e76274ch5j4nugv048qacb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Mon, 11 Jul 2016 13:28:48 +0000 (10:28 -0300)]
tools: Add copy of perf_event.h to tools/include/linux/
We shouldn't use headers from the kernel sources directly, instead we
should use the system's headers or in cases where that isn't possible,
like with perf_event.h, where the introduction of kernel features such
as perf_event_attr.{write_backwards,sample_max_stack} and
PERF_EVENT_IOC_PAUSE_OUTPUT take some time to become available in
/usr/include/linux/perf_event.h we need a copy.
Do it and check for source code drift, emitting a warning when changes
are detected.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-v6aks5un3s5pehory6f42nrl@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Mon, 11 Jul 2016 13:14:08 +0000 (10:14 -0300)]
perf tools: event.h needs asm/perf_regs.h
As it uses PERF_REGS_MAX, fix it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-2t232w0kcqu97xod8t2at2h0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Mon, 11 Jul 2016 13:05:52 +0000 (10:05 -0300)]
perf bench futex: Add missing compiler.h header
Since these files use __maybe_unused, and that is defined in
linux/compiler.h, include it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
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-1llbf59ut6xon6ti88jm0n9j@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Fri, 8 Jul 2016 18:26:50 +0000 (15:26 -0300)]
tools lib subcmd: Use str_error_r()
To make it portable to non-glibc systems, that follow the XSI variant
instead of the GNU specific one that gets in place when _GNU_SOURCE is
defined.
Cc: Adrian Hunter <adrian.hunter@intel.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: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-bozcszy93tpgw9ad6qm3dhpx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Fri, 8 Jul 2016 18:38:51 +0000 (15:38 -0300)]
tools lib: Guard the strlcpy() header with __GLIBC__
Better to whitelist it for libraries that require it (glibc) than
blacklist it with the ones that don't (uclibc, musl libc, etc).
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: Namhyung Kim <namhyung@kernel.org>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-52ih0m63a2n63tanpy6yj682@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Fri, 8 Jul 2016 18:26:50 +0000 (15:26 -0300)]
tools lib api fs: Use str_error_r()
To make it portable to non-glibc systems, that follow the XSI variant
instead of the GNU specific one that gets in place when _GNU_SOURCE is
defined.
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-mixgnh3iyajuqogn2opsocdy@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Fri, 8 Jul 2016 18:21:37 +0000 (15:21 -0300)]
tools lib traceevent: Use str_error_r()
To make it portable to non-glibc systems, that follow the XSI variant
instead of the GNU specific one that gets in place when _GNU_SOURCE is
defined.
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-c1gn8x978qfop65m510wy43o@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Thu, 7 Jul 2016 18:42:33 +0000 (15:42 -0300)]
perf tools: Uninline scnprintf() and vscnprint()
They were in tools/include/linux/kernel.h, requiring that it in turn
included stdio.h, which is way too heavy.
Cc: Adrian Hunter <adrian.hunter@intel.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: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-855h8olnkot9v0dajuee1lo3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Thu, 7 Jul 2016 14:51:47 +0000 (11:51 -0300)]
perf evsel: Uninline the is_function_event method
So that we don't have to carry a string.h header in evsel.h
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-2lwpm2aytdvvgo626zuat6et@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Thu, 7 Jul 2016 14:38:09 +0000 (11:38 -0300)]
perf tools: Remove needless includes from cache.h
The cache.h header doesn't use any of the definitions in some of the
headers it includes, ditch them and fix the fallout, where files were
getting stuff they needed just because they were including it, sometimes
not using what it really exports at all.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-l6r2bmj8h1g3e01wr981on0n@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Thu, 7 Jul 2016 14:37:08 +0000 (11:37 -0300)]
perf tools: Add missing header to color.c
It uses isatty(), so needs unistd.h, include it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-ivwuz8f68tb3sdcpguo9wmvx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Thu, 7 Jul 2016 14:35:50 +0000 (11:35 -0300)]
perf tests x86 rdpmc: Add missing headers
Another case of a file using definitions and getting them by chance,
from indirect header inclusion, fix it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-o3l1vi4gw2w6xyc6z4ig938s@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Thu, 7 Jul 2016 14:35:04 +0000 (11:35 -0300)]
perf test fdarray: Add missing poll.h header
It uses poll() but was getting the needed header by chance, do it
explicitely.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-76b3c5imnl6p69j4lqewzu9l@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Thu, 7 Jul 2016 14:32:29 +0000 (11:32 -0300)]
perf tests cpumap: Add missing headers
It was getting all sort of needed stuff by sheer luck, via indirect
includes, fix it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-tvjgo39t8k0ye6dntv3knran@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Thu, 7 Jul 2016 14:17:38 +0000 (11:17 -0300)]
perf quote: Disentangle headers
No need to include stdio.h from quote.h, also forward declare strbuf.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-k3kbcxhctpxvz6ckve3kv6c1@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Thu, 7 Jul 2016 14:06:58 +0000 (11:06 -0300)]
perf strbuf: Add missing headers
We were only indirectly and by luck getting types, etc needed for this
file, fix it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-gr8ejvzm7ojk6zwpeplyx9zu@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Thu, 7 Jul 2016 21:28:43 +0000 (18:28 -0300)]
perf tools: Move syscall number fallbacks from perf-sys.h to tools/arch/x86/include/asm/
And remove the empty tools/arch/x86/include/asm/unistd_{32,64}.h files
introduced by
eae7a755ee81 ("perf tools, x86: Build perf on older
user-space as well").
This way we get closer to mirroring the kernel for cases where __NR_
can't be found for some include path/_GNU_SOURCE/whatever scenario.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-kpj6m3mbjw82kg6krk2z529e@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Thu, 7 Jul 2016 14:01:46 +0000 (11:01 -0300)]
perf bench: Disentangle headers
We should try avoiding that perf.h header, it includes way too much
stuff, making it difficult to use things like setting _GNU_SOURCE only
on a small set of headers.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
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-lb6eg9w1kzrwhv0gm3ho0h54@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 5 Jul 2016 17:43:27 +0000 (14:43 -0300)]
perf tests openat-syscall-tp-fields: Add some conditional defines
These were only defined if _GNU_SOURCE was set in older glibc versions,
check that and provide the defines in such cases.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-b8esouhpg4tk6vi4n3d7ipch@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 5 Jul 2016 17:43:27 +0000 (14:43 -0300)]
perf trace: Add conditional define for AT_FDCWD
This one was only defined if _GNU_SOURCE was set in older glibc
versions, check that and provide the define in such cases.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-ilsgsysr6s3mru7rf2befnu5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Wed, 6 Jul 2016 15:19:19 +0000 (12:19 -0300)]
perf tests: Add missing pthread.h include for CPU_*() macros
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-dfcynqzvecsu55zmpxub9jgv@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Wed, 6 Jul 2016 15:14:56 +0000 (12:14 -0300)]
perf bench: Add missing pthread.h include for CPU_*() macros
Cc: David Ahern <dsahern@gmail.com>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
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-48qbfv7tqs8n8ey74lbyfjtq@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Wed, 6 Jul 2016 14:56:20 +0000 (11:56 -0300)]
tools: Introduce str_error_r()
The tools so far have been using the strerror_r() GNU variant, that
returns a string, be it the buffer passed or something else.
But that, besides being tricky in cases where we expect that the
function using strerror_r() returns the error formatted in a provided
buffer (we have to check if it returned something else and copy that
instead), breaks the build on systems not using glibc, like Alpine
Linux, where musl libc is used.
So, introduce yet another wrapper, str_error_r(), that has the GNU
interface, but uses the portable XSI variant of strerror_r(), so that
users rest asured that the provided buffer is used and it is what is
returned.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-d4t42fnf48ytlk8rjxs822tf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 5 Jul 2016 17:43:27 +0000 (14:43 -0300)]
perf trace beauty open_flags: Add more conditional defines
Don't handle some flags only if they have its defines in headers at
time of building, define what is missing.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-wgjxeidwpowrvqgrxr080k6u@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 5 Jul 2016 17:43:27 +0000 (14:43 -0300)]
perf trace beauty flock: Add more conditional defines
Don't handle some flags only if they have its defines in headers at
time of building, define what is missing.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-pgoxanv1y6hfcnryxawzuskl@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 5 Jul 2016 17:43:27 +0000 (14:43 -0300)]
perf trace beauty mmap: Add more conditional defines
Don't handle some flags only if they have its defines in headers at
time of building, define what is missing.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-czbmxb01xzcl3h2qxuzoqkj5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 5 Jul 2016 17:43:27 +0000 (14:43 -0300)]
perf trace beauty open_flags: Add missing headers
Those beautifiers need to make sure they include what they reference,
as changes in builtin-trace.c may end up removing needed stuff, like
when undefining _GNU_SOURCE.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-a9cz8za6lqutfapn5e7uum09@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 5 Jul 2016 17:43:27 +0000 (14:43 -0300)]
perf trace beauty flock: Add missing fcntl.h include
Those beautifiers need to make sure they include what they reference,
as changes in builtin-trace.c may end up removing needed stuff, like
when undefining _GNU_SOURCE.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-2etqhfmgv5jcnfwnkbwadns2@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 5 Jul 2016 17:42:31 +0000 (14:42 -0300)]
perf trace beauty msg_flags: Remove MSG_TRYHARD
It is the same as MSG_DONTROUTE and is only defined together with
_GNU_SOURCE.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-q4vbov6jl0e0152y01kv2htw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 5 Jul 2016 14:14:38 +0000 (11:14 -0300)]
perf report: Introduce --stdio-color to setup the color output mode selection
'perf report --stdio' will colorize entries with most hits and possibly
some other aspects of its output, but those colors gets suppressed if we
redirect the output to a non-tty, allow keeping the colors by adding a
new option, --stdio-color, now this use case will also output escape
sequences for colors:
$ perf annotate --stdio-color | more
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: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-3iuawqjldu4i8gziot7e3d5n@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 5 Jul 2016 14:08:17 +0000 (11:08 -0300)]
perf annotate: Introduce --stdio-color to setup the color output mode selection
'perf annotate --stdio' will colorize entries with most hits and
possibly some other aspects of its output, but those colors gets
suppressed if we redirect the output to a non-tty, allow keeping the
colors by adding a new option, --stdio-color, now this use case will
also output escape sequences for colors:
$ perf annotate --stdio-color | more
Based-on-a-patch-by: Peter Zijlstra <peterz@infradead.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-sjrnixani5pg6qez640gaxhf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 5 Jul 2016 14:05:24 +0000 (11:05 -0300)]
perf ui stdio: Add way to setup the color output mode selection
In --stdio we turn off color output when the output is not a tty,
which is not always desirable, for instance, in:
perf annotate | more
the 'more' tool is perfectly capable of processing the escape sequences
for colored output.
Allow using the existing logic for .perfconfig's "color.ui" to be used
from the command line by providing a stdio__config_color() helper, that
will be used by annotate and report in follow up patches.
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: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-1u4wjdbcc41dxndsb4klpa9y@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Tue, 5 Jul 2016 06:56:05 +0000 (08:56 +0200)]
perf hists: Introduce hists__add_entry_ops function
Introducing hists__add_entry_ops function to allow using the allocation
callbacks externally.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1467701765-26194-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Tue, 5 Jul 2016 06:56:04 +0000 (08:56 +0200)]
perf hists: Introduce hist_entry_ops
Introducing allocation callbacks, that allows to extend current
hist_entry object into objects with special needs without polluting the
current hist_entry object.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1467701765-26194-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Tue, 5 Jul 2016 06:56:03 +0000 (08:56 +0200)]
perf hists: Introduce hist_entry__init function
Move the 'struct hist_entry' initialization code to a separate function.
It'll be useful and more clear for the following patches that introduce
allocation callbacks.
Releasing the hist_entry object in hist_entry__new function
(where it's allocated) rather than in hist_entry__init.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1467701765-26194-2-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Ingo Molnar [Sun, 10 Jul 2016 18:58:36 +0000 (20:58 +0200)]
Revert "perf/x86/intel, watchdog: Switch NMI watchdog to ref cycles on x86"
This reverts commit
2c95afc1e83d93fac3be6923465e1753c2c53b0a.
Stephane reported the following regression:
> Since Andi added:
>
> commit
2c95afc1e83d93fac3be6923465e1753c2c53b0a
> Author: Andi Kleen <ak@linux.intel.com>
> Date: Thu Jun 9 06:14:38 2016 -0700
>
> perf/x86/intel, watchdog: Switch NMI watchdog to ref cycles on x86
>
> $ perf stat -e ref-cycles ls
> <not counted> ....
>
> fails systematically because the ref-cycles is now used by the
> watchdog and given this is a system-wide pinned event, it monopolizes
> the fixed counter 2 which is the only counter able to measure this event.
Since the next merge window is near, fix the regression for now
by reverting the commit.
Reported-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Kan Liang [Wed, 29 Jun 2016 14:01:51 +0000 (07:01 -0700)]
perf/x86/intel/uncore: Add support for the Intel Skylake client uncore PMU
This patch adds full support for Intel SKL client uncore PMU:
- Add support for SKL client CPU uncore PMU, which is similar to the
BDW client PMU driver. (There are some differences in CBOX numbering
and uncore control MSR.)
- Add new support for SkyLake Mobile uncore PMUs, for both CPU and PCI
uncore functionality.
Signed-off-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1467208912-8179-1-git-send-email-kan.liang@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Peter Zijlstra [Thu, 30 Jun 2016 09:49:08 +0000 (11:49 +0200)]
perf/x86/intel: Fix rdlbr_to() MSR reading typo
It helps to actually read the right MSR..
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: linux-kernel@vger.kernel.org
Fixes:
d4cf1949f968 ("perf/x86/intel: Add {rd,wr}lbr_{to,from} wrappers")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Thu, 7 Jul 2016 06:58:23 +0000 (08:58 +0200)]
Merge branch 'perf/urgent' into perf/core, to pick up fixes before merging new changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Mark Rutland [Tue, 14 Jun 2016 15:10:41 +0000 (16:10 +0100)]
perf/core: Fix pmu::filter_match for SW-led groups
The following commit:
66eb579e66ec ("perf: allow for PMU-specific event filtering")
added the pmu::filter_match() callback. This was intended to
avoid HW constraints on events from resulting in extremely
pessimistic scheduling.
However, pmu::filter_match() is only called for the leader of each event
group. When the leader is a SW event, we do not filter the groups, and
may fail at pmu::add() time, and when this happens we'll give up on
scheduling any event groups later in the list until they are rotated
ahead of the failing group.
This can result in extremely sub-optimal event scheduling behaviour,
e.g. if running the following on a big.LITTLE platform:
$ taskset -c 0 ./perf stat \
-e 'a57{context-switches,armv8_cortex_a57/config=0x11/}' \
-e 'a53{context-switches,armv8_cortex_a53/config=0x11/}' \
ls
<not counted> context-switches (0.00%)
<not counted> armv8_cortex_a57/config=0x11/ (0.00%)
24 context-switches (37.36%)
57589154 armv8_cortex_a53/config=0x11/ (37.36%)
Here the 'a53' event group was always eligible to be scheduled, but
the 'a57' group never eligible to be scheduled, as the task was always
affine to a Cortex-A53 CPU. The SW (group leader) event in the 'a57'
group was eligible, but the HW event failed at pmu::add() time,
resulting in ctx_flexible_sched_in giving up on scheduling further
groups with HW events.
One way of avoiding this is to check pmu::filter_match() on siblings
as well as the group leader. If any of these fail their
pmu::filter_match() call, we must skip the entire group before
attempting to add any events.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Fixes:
66eb579e66ec ("perf: allow for PMU-specific event filtering")
Link: http://lkml.kernel.org/r/1465917041-15339-1-git-send-email-mark.rutland@arm.com
[ Small readability edits. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ville Syrjälä [Thu, 23 Jun 2016 15:06:49 +0000 (18:06 +0300)]
x86/perf/intel/rapl: Fix module name collision with powercap intel-rapl
Since commit
4b6e2571bf00 the rapl perf module calls itself intel-rapl. That
name was already in use by the rapl powercap driver, which now fails to load
if the perf module is loaded. Fix the problem by renaming the perf module to
intel-rapl-perf, so that both modules can coexist.
Fixes:
4b6e2571bf00 ("x86/perf/intel/rapl: Make the Intel RAPL PMU driver modular")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1466694409-3620-1-git-send-email-ville.syrjala@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Ingo Molnar [Tue, 5 Jul 2016 10:13:14 +0000 (12:13 +0200)]
Merge tag 'perf-core-for-mingo-
20160704' of git://git./linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
Documentation changes:
- Update android build documentation (Chris Phlipot)
Infrastructure changes:
- Respect WERROR=0 in libapi and libsubcmd, to allow building on Android (Chris Phlipot)
- Prep work to support SDT events in probe cache (Masami Hiramatsu)
- ELF support for SDT (Hemant Kumar)
- Add feature detection for libelf's elf_getshdrstrndx function (Arnaldo Carvalho de Melo)
- Fix hist accumulation test (Jiri Olsa)
- Unwind callchain fixes (Jiri Olsa)
- Change internal representation of numa nodes obtained from
perf.data header (Jiri Olsa)
- Sync copy of syscall_64.tbl with the kernel (Arnaldo Carvalho de Melo)
- Add LGPL 2.1 license header to libbpf source files (Wang Nan)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Arnaldo Carvalho de Melo [Mon, 4 Jul 2016 23:29:40 +0000 (20:29 -0300)]
perf tools: Sync copy of syscall_64.tbl with the kernel
Noticed by the build system, that emitted this warning:
Warning: x86_64's syscall_64.tbl differs from kernel
This was due to the wiring up of the recently added preadv2 & pwritev2
syscalls to the compat code, which hadn't been done by the patch
introducing those syscalls:
4babf2c5efb7 ("x86: wire up preadv2 and
pwritev2").
The patch doing the compat wiring was:
482dd2ef1244 ("x86/syscalls: Wire up compat readv2/writev2 syscalls")
This just silences the perf build warning, as compat syscalls still
can't be supported in 'perf trace´ due to limitations in the
raw_syscalls:sys_{enter,exit} tracepoints it relies on.
Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-4dm8eoy0wslgtwqdhz64ods0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Chris Phlipot [Fri, 1 Jul 2016 05:12:35 +0000 (22:12 -0700)]
perf tools: Update android build documentation
Update the android build documentation according to recent android build
fixes. The instructions for step 1a and step 2 were updated to work with
NDK version 11(oldest supported version) and NDK version 12(current
version).
Signed-off-by: Chris Phlipot <cphlipot0@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1467349955-1135-5-git-send-email-cphlipot0@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Chris Phlipot [Fri, 1 Jul 2016 05:12:33 +0000 (22:12 -0700)]
tools lib subcmd: Respect WERROR=0 for build
this enables the workaround for compilers that generate warnings when
compiling libsubcmd.
Signed-off-by: Chris Phlipot <cphlipot0@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1467349955-1135-3-git-send-email-cphlipot0@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Chris Phlipot [Fri, 1 Jul 2016 05:12:32 +0000 (22:12 -0700)]
tools lib api: Respect WERROR=0 for build
This enables the workaround for compilers that generate warnings when
compiling libapi.
Signed-off-by: Chris Phlipot <cphlipot0@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1467349955-1135-2-git-send-email-cphlipot0@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Wang Nan [Mon, 4 Jul 2016 11:02:42 +0000 (11:02 +0000)]
tools lib bpf: Add license header
Adding a missing license descriptopn header to files in libbpf, make it
LGPL-2.1.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Eric Leblond <eleblond@stamus-networks.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1467630162-193121-1-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Mon, 4 Jul 2016 12:16:23 +0000 (14:16 +0200)]
perf unwind: Call unwind__prepare_access for forked thread
Currently we call unwind__prepare_access for map event. In case we
report fork event the thread inherits its parent's maps and
unwind__prepare_access is never called for the thread.
This causes unwind__get_entries seeing uninitialized
unwind_libunwind_ops and thus returning no callchain.
Adding unwind__prepare_access calls for fork even processing.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1467634583-29147-5-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Mon, 4 Jul 2016 12:16:22 +0000 (14:16 +0200)]
perf unwind: Add initialized arg into unwind__prepare_access
Adding initialized arg into unwind__prepare_access to get feedback about
the initialization state.
It's not possible to get it from error code, because we return 0 even in
case we don't recognize dso, which is valid.
The 'initialized' value is used in following patch to speedup
unwind__prepare_access calls logic in fork path.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1467634583-29147-4-git-send-email-jolsa@kernel.org
[ Remove ; after static inline function signatures, fixes build break ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Mon, 4 Jul 2016 12:16:21 +0000 (14:16 +0200)]
perf tests: Fix hist accumulation test
User's values from .perfconfig could overload the default callchain
setup and cause this test to fail. Making sure the test is using
default callchain_param values.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1467634583-29147-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Mon, 4 Jul 2016 12:16:20 +0000 (14:16 +0200)]
perf header: Transform nodes string info to struct
Storing NUMA info within struct numa_node instead of strings. This way
it's usable in future patches.
Also it turned out it's slightly less code involved than using strings.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1467634583-29147-2-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Masami Hiramatsu [Fri, 1 Jul 2016 08:04:10 +0000 (17:04 +0900)]
perf buildid-cache: Scan and import user SDT events to probe cache
perf buildid-cache --add <binary> scans given binary and add
the SDT events to probe cache. "sdt_" prefix is appended for
all SDT providers to avoid event-name clash with other pre-defined
events. It is possible to use the cached SDT events as other cached
events, via perf probe --add "sdt_<provider>:<event>=<event>".
e.g.
----
# perf buildid-cache --add /lib/libc-2.17.so
# perf probe --cache --list | head -n 5
/usr/lib/libc-2.17.so (
a6fb821bdf53660eb2c29f778757aef294d3d392):
sdt_libc:setjmp=setjmp
sdt_libc:longjmp=longjmp
sdt_libc:longjmp_target=longjmp_target
sdt_libc:memory_heap_new=memory_heap_new
# perf probe -x /usr/lib/libc-2.17.so \
-a sdt_libc:memory_heap_new=memory_heap_new
Added new event:
sdt_libc:memory_heap_new (on memory_heap_new
in /usr/lib/libc-2.17.so)
You can now use it in all perf tools, such as:
perf record -e sdt_libc:memory_heap_new -aR sleep 1
# perf probe -l
sdt_libc:memory_heap_new (on new_heap+183 in /usr/lib/libc-2.17.so)
----
Note that SDT event entries in probe-cache file is somewhat different
from normal cached events. Normal one starts with "#", but SDTs are
starting with "%".
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/146736025058.27797.13043265488541434502.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Masami Hiramatsu [Fri, 1 Jul 2016 08:04:01 +0000 (17:04 +0900)]
perf probe: Add group name support
Allow user to set group name for adding new event. Note that user must
ensure that the group name doesn't conflict with existing group name
carefully.
E.g. Existing group name can conflict with other events. Especially,
using the group name reserved for kernel modules can hide kernel
embedded events when loading modules.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/146736024091.27797.9471545190066268995.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Hemant Kumar [Fri, 1 Jul 2016 08:03:46 +0000 (17:03 +0900)]
perf sdt: ELF support for SDT
This patch serves the initial support to identify and list SDT events in
binaries. When programs containing SDT markers are compiled, gcc with
the help of assembler directives identifies them and places them in the
section ".note.stapsdt".
To find these markers from the binaries, one needs to traverse through
this section and parse the relevant details like the name, type and
location of the marker. Also, the original location could be skewed due
to the effect of prelinking. If that is the case, the locations need to
be adjusted.
The functions in this patch open a given ELF, find out the SDT section,
parse the relevant details, adjust the location (if necessary) and
populate them in a list.
A typical note entry in ".note.stapsdt" section is as follows :
|--nhdr.n_namesz--|
------------------------------------
| nhdr | "stapsdt" |
----- |----------------------------------|
| | <location> <base_address> |
| | <semaphore> |
nhdr.n_descsize | "provider_name" "note_name" |
| | <args> |
----- |----------------------------------|
| nhdr | "stapsdt" |
|...
The above shows an excerpt from the section ".note.stapsdt". 'nhdr' is
a structure which has the note name size (n_namesz), note description
size (n_desc_sz) and note type (n_type).
So, in order to parse the note note info, we need nhdr to tell us where
to start from. As can be seen from <sys/sdt.h>, the name of the SDT
notes given is "stapsdt". But this is not the identifier of the note.
After that, we go to description of the note to find out its location, the
address of the ".stapsdt.base" section and the semaphore address.
Then, we find the provider name and the SDT marker name and then follow the
arguments.
Signed-off-by: Hemant Kumar <hemant@linux.vnet.ibm.com>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/146736022628.27797.1201368329092908163.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Mon, 4 Jul 2016 22:35:47 +0000 (19:35 -0300)]
perf build: Add feature detection for libelf's elf_getshdrstrndx()
That appeared after 0.140, and will be used in the SDT code, so, to
avoid bisection break on older systems, add a feature detection and
provide a stub with a pr_debug() to keep it building.
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-80y0eldgweorqnwha9rvfxjr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Josh Poimboeuf [Sat, 2 Jul 2016 04:02:05 +0000 (23:02 -0500)]
perf/x86: Fix 32-bit perf user callgraph collection
A basic perf callgraph record operation causes an immediate panic on a
32-bit kernel compiled with CONFIG_CC_STACKPROTECTOR=y:
$ perf record -g ls
Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in:
c0404fbd
CPU: 0 PID: 998 Comm: ls Not tainted 4.7.0-rc5+ #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-1.fc24 04/01/2014
c0dd5967 ff7afe1c 00000086 f41dbc2c c07445a0 464c457f f41dbca8 f41dbc44
c05646f4 f41dbca8 464c457f f41dbca8 464c457f f41dbc54 c04625be c0ce56fc
c0404fbd f41dbc88 c0404fbd b74668f0 f41dc000 00000000 c0000000 00000000
Call Trace:
[<
c07445a0>] dump_stack+0x58/0x78
[<
c05646f4>] panic+0x8e/0x1c6
[<
c04625be>] __stack_chk_fail+0x1e/0x30
[<
c0404fbd>] ? perf_callchain_user+0x22d/0x230
[<
c0404fbd>] perf_callchain_user+0x22d/0x230
[<
c055f89f>] get_perf_callchain+0x1ff/0x270
[<
c055f988>] perf_callchain+0x78/0x90
[<
c055c7eb>] perf_prepare_sample+0x24b/0x370
[<
c055c934>] perf_event_output_forward+0x24/0x70
[<
c05531c0>] __perf_event_overflow+0xa0/0x210
[<
c0550a93>] ? cpu_clock_event_read+0x43/0x50
[<
c0553431>] perf_swevent_hrtimer+0x101/0x180
[<
c0456235>] ? kmap_atomic_prot+0x35/0x140
[<
c056dc69>] ? get_page_from_freelist+0x279/0x950
[<
c058fdd8>] ? vma_interval_tree_remove+0x158/0x230
[<
c05939f4>] ? wp_page_copy.isra.82+0x2f4/0x630
[<
c05a050d>] ? page_add_file_rmap+0x1d/0x50
[<
c0565611>] ? unlock_page+0x61/0x80
[<
c0566755>] ? filemap_map_pages+0x305/0x320
[<
c059769f>] ? handle_mm_fault+0xb7f/0x1560
[<
c074cbeb>] ? timerqueue_del+0x1b/0x70
[<
c04cfefe>] ? __remove_hrtimer+0x2e/0x60
[<
c04d017b>] __hrtimer_run_queues+0xcb/0x2a0
[<
c0553330>] ? __perf_event_overflow+0x210/0x210
[<
c04d0a2a>] hrtimer_interrupt+0x8a/0x180
[<
c043ecc2>] local_apic_timer_interrupt+0x32/0x60
[<
c043f643>] smp_apic_timer_interrupt+0x33/0x50
[<
c0b0cd38>] apic_timer_interrupt+0x34/0x3c
Kernel Offset: disabled
---[ end Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in:
c0404fbd
The panic is caused by the fact that perf_callchain_user() mistakenly
assumes it's 64-bit only and ends up corrupting the stack.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: stable@vger.kernel.org # v4.5+
Fixes:
75925e1ad7f5 ("perf/x86: Optimize stack walk user accesses")
Link: http://lkml.kernel.org/r/1a547f5077ec30f75f9b57074837c3c80df86e5e.1467432113.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Stephane Eranian [Fri, 1 Jul 2016 22:22:22 +0000 (15:22 -0700)]
perf/x86/intel: Update event constraints when HT is off
This patch updates the event constraints for non-PEBS mode for
Intel Broadwell and Skylake processors. When HT is off, each
CPU gets 8 generic counters. However, not all events can be
programmed on any of the 8 counters. This patch adds the
constraints for the MEM_* events which can only be measured on the
bottom 4 counters. The constraints are also valid when HT is off
because, then, there are only 4 generic counters and they are the
bottom counters.
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: kan.liang@intel.com
Link: http://lkml.kernel.org/r/1467411742-13245-1-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Linus Torvalds [Sun, 3 Jul 2016 02:10:21 +0000 (19:10 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus
Pull MIPS fix from Ralf Baechle:
"Only a single fix for 4.7 pending at this point. It fixes an issue
that may lead to corruption of the cache mode bits in the page table"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: Fix possible corruption of cache mode by mprotect.
Linus Torvalds [Sun, 3 Jul 2016 00:47:54 +0000 (17:47 -0700)]
Merge tag 'powerpc-4.7-5' of git://git./linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- tm: Always reclaim in start_thread() for exec() class syscalls from
Cyril Bur
- tm: Avoid SLB faults in treclaim/trecheckpoint when RI=0 from Michael
Neuling
- eeh: Fix wrong argument passed to eeh_rmv_device() from Gavin Shan
- Initialise pci_io_base as early as possible from Darren Stevens
* tag 'powerpc-4.7-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Initialise pci_io_base as early as possible
powerpc/tm: Avoid SLB faults in treclaim/trecheckpoint when RI=0
powerpc/eeh: Fix wrong argument passed to eeh_rmv_device()
powerpc/tm: Always reclaim in start_thread() for exec() class syscalls
Linus Torvalds [Sat, 2 Jul 2016 16:41:28 +0000 (09:41 -0700)]
Merge tag 'drm-fixes-for-v4.7-rc6' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes frlm Dave Airlie:
"Just some AMD and Intel fixes, the AMD ones are further production
Polaris fixes, and the Intel ones fix some early timeouts, some PCI ID
changes and a couple of other fixes.
Still a bit Internet challenged here, hopefully end of next week will
solve it"
* tag 'drm-fixes-for-v4.7-rc6' of git://people.freedesktop.org/~airlied/linux:
drm/i915: Fix missing unlock on error in i915_ppgtt_info()
drm/amd/powerplay: workaround for UVD clock issue
drm/amdgpu: add ACLK_CNTL setting for polaris10
drm/amd/powerplay: fix issue uvd dpm can't enabled on Polaris11.
drm/amd/powerplay: Workaround for Memory EDC Error on Polaris10.
drm/i915: Removing PCI IDs that are no longer listed as Kabylake.
drm/i915: Add more Kabylake PCI IDs.
drm/i915: Avoid early timeout during AUX transfers
drm/i915/hsw: Avoid early timeout during LCPLL disable/restore
drm/i915/lpt: Avoid early timeout during FDI PHY reset
drm/i915/bxt: Avoid early timeout during PLL enable
drm/i915: Refresh cached DP port register value on resume
drm/amd/powerplay: Update CKS on/ CKS off voltage offset calculation
drm/amd/powerplay: disable FFC.
drm/amd/powerplay: add some definition for FFC feature on polaris.
Linus Torvalds [Sat, 2 Jul 2016 16:40:11 +0000 (09:40 -0700)]
Merge tag 'spi-fix-v4.7-rc5' of git://git./linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A few small driver-specific fixes for SPI, all in the normal important
if you hit them category especially the rockchip driver fix which
addresses a race which has been exposed more frequently with some
recent performance improvements"
* tag 'spi-fix-v4.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: sunxi: fix transfer timeout
spi: sun4i: fix FIFO limit
spi: rockchip: Signal unfinished DMA transfers
spi: spi-ti-qspi: Suspend the queue before removing the device
Linus Torvalds [Sat, 2 Jul 2016 16:39:03 +0000 (09:39 -0700)]
Merge tag 'regulator-fix-v4.7-rc5' of git://git./linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"Two small fixes for the regulator subsystem - one fixing a crash with
one of the devices supported by the max77620 driver, another fixing
startup for the anatop regulator when it starts up with the regulator
in bypass mode"
* tag 'regulator-fix-v4.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: max77620: check for valid regulator info
regulator: anatop: allow regulator to be in bypass mode
Linus Torvalds [Sat, 2 Jul 2016 16:36:49 +0000 (09:36 -0700)]
Merge tag 'clk-fixes-for-linus' of git://git./linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"A small fix for the newly added oxnas clk driver and a handful of
rockchip clk driver fixes for newly added rk3399 support"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: Fix return value check in oxnas_stdclk_probe()
clk: rockchip: release io resource when failing to init clk on rk3399
clk: rockchip: fix cpuclk registration error handling
clk: rockchip: Revert "clk: rockchip: reset init state before mmc card initialization"
clk: rockchip: fix incorrect parent for rk3399's {c,g}pll_aclk_perihp_src
clk: rockchip: mark rk3399 GIC clocks as critical
clk: rockchip: initialize flags of clk_init_data in mmc-phase clock
Dave Airlie [Sat, 2 Jul 2016 05:50:41 +0000 (15:50 +1000)]
Merge tag 'drm-intel-fixes-2016-06-30' of git://anongit.freedesktop.org/drm-intel into drm-fixes
here's a batch of i915 fixes for 4.7.
* tag 'drm-intel-fixes-2016-06-30' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Fix missing unlock on error in i915_ppgtt_info()
drm/i915: Removing PCI IDs that are no longer listed as Kabylake.
drm/i915: Add more Kabylake PCI IDs.
drm/i915: Avoid early timeout during AUX transfers
drm/i915/hsw: Avoid early timeout during LCPLL disable/restore
drm/i915/lpt: Avoid early timeout during FDI PHY reset
drm/i915/bxt: Avoid early timeout during PLL enable
drm/i915: Refresh cached DP port register value on resume
Dave Airlie [Sat, 2 Jul 2016 05:48:33 +0000 (15:48 +1000)]
Merge branch 'drm-fixes-4.7' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
Just a few more late fixes for Polaris cards.
* 'drm-fixes-4.7' of git://people.freedesktop.org/~agd5f/linux:
drm/amd/powerplay: workaround for UVD clock issue
drm/amdgpu: add ACLK_CNTL setting for polaris10
drm/amd/powerplay: fix issue uvd dpm can't enabled on Polaris11.
drm/amd/powerplay: Workaround for Memory EDC Error on Polaris10.
drm/amd/powerplay: Update CKS on/ CKS off voltage offset calculation
drm/amd/powerplay: disable FFC.
drm/amd/powerplay: add some definition for FFC feature on polaris.
Ralf Baechle [Fri, 1 Jul 2016 13:01:01 +0000 (15:01 +0200)]
MIPS: Fix possible corruption of cache mode by mprotect.
The following testcase may result in a page table entries with a invalid
CCA field being generated:
static void *bindstack;
static int sysrqfd;
static void protect_low(int protect)
{
mprotect(bindstack, BINDSTACK_SIZE, protect);
}
static void sigbus_handler(int signal, siginfo_t * info, void *context)
{
void *addr = info->si_addr;
write(sysrqfd, "x", 1);
printf("sigbus, fault address %p (should not happen, but might)\n",
addr);
abort();
}
static void run_bind_test(void)
{
unsigned int *p = bindstack;
p[0] = 0xf001f001;
write(sysrqfd, "x", 1);
/* Set trap on access to p[0] */
protect_low(PROT_NONE);
write(sysrqfd, "x", 1);
/* Clear trap on access to p[0] */
protect_low(PROT_READ | PROT_WRITE | PROT_EXEC);
write(sysrqfd, "x", 1);
/* Check the contents of p[0] */
if (p[0] != 0xf001f001) {
write(sysrqfd, "x", 1);
/* Reached, but shouldn't be */
printf("badness, shouldn't happen but does\n");
abort();
}
}
int main(void)
{
struct sigaction sa;
sysrqfd = open("/proc/sysrq-trigger", O_WRONLY);
if (sigprocmask(SIG_BLOCK, NULL, &sa.sa_mask)) {
perror("sigprocmask");
return 0;
}
sa.sa_sigaction = sigbus_handler;
sa.sa_flags = SA_SIGINFO | SA_NODEFER | SA_RESTART;
if (sigaction(SIGBUS, &sa, NULL)) {
perror("sigaction");
return 0;
}
bindstack = mmap(NULL,
BINDSTACK_SIZE,
PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (bindstack == MAP_FAILED) {
perror("mmap bindstack");
return 0;
}
printf("bindstack: %p\n", bindstack);
run_bind_test();
printf("done\n");
return 0;
}
There are multiple ingredients for this:
1) PAGE_NONE is defined to _CACHE_CACHABLE_NONCOHERENT, which is CCA 3
on all platforms except SB1 where it's CCA 5.
2) _page_cachable_default must have bits set which are not set
_CACHE_CACHABLE_NONCOHERENT.
3) Either the defective version of pte_modify for XPA or the standard
version must be in used. However pte_modify for the 36 bit address
space support is no affected.
In that case additional bits in the final CCA mode may generate an invalid
value for the CCA field. On the R10000 system where this was tracked
down for example a CCA 7 has been observed, which is Uncached Accelerated.
Fixed by:
1) Using the proper CCA mode for PAGE_NONE just like for all the other
PAGE_* pte/pmd bits.
2) Fix the two affected variants of pte_modify.
Further code inspection also shows the same issue to exist in pmd_modify
which would affect huge page systems.
Issue in pte_modify tracked down by Alastair Bridgewater, PAGE_NONE
and pmd_modify issue found by me.
The history of this goes back beyond Linus' git history. Chris Dearman's
commit
351336929ccf222ae38ff0cb7a8dd5fd5c6236a0 ("[MIPS] Allow setting of
the cache attribute at run time.") missed the opportunity to fix this
but it was originally introduced in lmo commit
d523832cf12007b3242e50bb77d0c9e63e0b6518 ("Missing from last commit.")
and
32cc38229ac7538f2346918a09e75413e8861f87 ("New configuration option
CONFIG_MIPS_UNCACHED.")
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reported-by: Alastair Bridgewater <alastair.bridgewater@gmail.com>
Linus Torvalds [Fri, 1 Jul 2016 22:31:48 +0000 (15:31 -0700)]
Merge tag 'acpi-4.7-rc6' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"Fix an expression in the ACPI PCI IRQ management code added by a
recent commit that overlooked missing parens in it, so the result of
the computation is incorrect in some cases (Sinan Kaya)"
* tag 'acpi-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI,PCI,IRQ: correct operator precedence
Linus Torvalds [Fri, 1 Jul 2016 22:28:22 +0000 (15:28 -0700)]
Merge tag 'pm-4.7-rc6' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"Three cpufreq fixes, one in the core (stable-candidate) and two in
drivers (intel_pstate and cpufreq-dt).
Specifics:
- Fix a recent intel_pstate regression that caused the number of
wakeups to increase significantly on an idle system in some cases
due to excessive synchronize_sched() invocations (Rafael Wysocki).
- Fix unnecessary invocations of WARN_ON() in the cpufreq core after
cpufreq has been suspended introduced during the 4.6 cycla (Rafael
Wysocki).
- Fix an error code path in the cpufreq-dt-platdev driver that
forgets to drop a reference to a DT node (Masahiro Yamada)"
* tag 'pm-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: Avoid false-positive WARN_ON()s in cpufreq_update_policy()
cpufreq: dt: call of_node_put() before error out
intel_pstate: Do not clear utilization update hooks on policy changes
Linus Torvalds [Fri, 1 Jul 2016 22:20:11 +0000 (15:20 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
"Tmpfs readdir throughput regression fix (this cycle) + some -stable
fodder all over the place.
One missing bit is Miklos' tonight locks.c fix - NFS folks had already
grabbed that one by the time I woke up ;-)"
[ The locks.c fix came through the nfsd tree just moments ago ]
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
namespace: update event counter when umounting a deleted dentry
9p: use file_dentry()
ceph: fix d_obtain_alias() misuses
lockless next_positive()
libfs.c: new helper - next_positive()
dcache_{readdir,dir_lseek}(): don't bother with nested ->d_lock
Linus Torvalds [Fri, 1 Jul 2016 22:18:49 +0000 (15:18 -0700)]
Merge tag 'nfsd-4.7-3' of git://linux-nfs.org/~bfields/linux
Pull lockd/locks fixes from Bruce Fields:
"One fix for lockd soft lookups in an error path, and one fix for file
leases on overlayfs"
* tag 'nfsd-4.7-3' of git://linux-nfs.org/~bfields/linux:
locks: use file_inode()
lockd: unregister notifier blocks if the service fails to come up completely
Linus Torvalds [Fri, 1 Jul 2016 22:17:16 +0000 (15:17 -0700)]
Merge tag 'mfd-fixes-4.7.1' of git://git./linux/kernel/git/lee/mfd
Pull more MFD fixes from Lee Jones:
"Apologies for missing these from the first pull request.
Final patches fixing Reset API change"
* tag 'mfd-fixes-4.7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
usb: dwc3: st: Use explicit reset_control_get_exclusive() API
phy: phy-stih407-usb: Use explicit reset_control_get_exclusive() API
phy: miphy28lp: Inform the reset framework that our reset line may be shared