* [GIT PULL 0/6] perf/core improvements and fixes
@ 2017-03-16 16:09 Arnaldo Carvalho de Melo
2017-03-16 16:09 ` [PATCH 2/6] trace/kprobes: Fix check for kretprobe offset within function entry Arnaldo Carvalho de Melo
2017-03-16 16:30 ` [GIT PULL 0/6] perf/core improvements and fixes Ingo Molnar
0 siblings, 2 replies; 3+ messages in thread
From: Arnaldo Carvalho de Melo @ 2017-03-16 16:09 UTC (permalink / raw)
To: Ingo Molnar
Cc: linux-kernel, Arnaldo Carvalho de Melo, Adrian Hunter,
Alexander Shishkin, Alexei Starovoitov,
Ananth N Mavinakayanahalli, Andi Kleen, Andy Lutomirski,
Anton Blanchard, Borislav Petkov, Brendan Gregg, David Ahern,
David Miller, He Kuang, Hemant Kumar, Jiri Olsa, linuxppc-dev,
Masami Hiramatsu, Mathieu Poirier, Michael Ellerman, Namhyung Kim,
Naveen N . Rao, Peter Zijlstra, Ravi Bangoria, Srikar Dronamraju,
Stephane Eranian, Steven Rostedt, Sukadev Bhattiprolu,
Taeung Song, Thomas Gleixner, Wang Nan, Arnaldo Carvalho de Melo
Hi Ingo,
Please consider pulling,
- Arnaldo
Test results at the end of this message, as usual.
The following changes since commit ffa86c2f1a8862cf58c873f6f14d4b2c3250fb48:
Merge tag 'perf-core-for-mingo-4.12-20170314' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2017-03-15 19:27:27 +0100)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo-4.12-20170316
for you to fetch changes up to 61f35d750683b21e9e3836e309195c79c1daed74:
uprobes: Default UPROBES_EVENTS to Y (2017-03-16 12:42:02 -0300)
----------------------------------------------------------------
perf/core improvements and fixes:
New features:
- Add 'brstackinsn' field in 'perf script' to reuse the x86 instruction
decoder used in the Intel PT code to study hot paths to samples (Andi Kleen)
Kernel:
- Default UPROBES_EVENTS to Y (Alexei Starovoitov)
- Fix check for kretprobe offset within function entry (Naveen N. Rao)
Infrastructure:
- Introduce util func is_sdt_event() (Ravi Bangoria)
- Make perf_event__synthesize_mmap_events() scale on older kernels where
reading /proc/pid/maps is way slower than reading /proc/pid/task/pid/maps (Stephane Eranian)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
----------------------------------------------------------------
Andi Kleen (1):
perf script: Add 'brstackinsn' for branch stacks
Arnaldo Carvalho de Melo (2):
tools headers: Sync {tools/,}arch/x86/include/asm/cpufeatures.h
uprobes: Default UPROBES_EVENTS to Y
Naveen N. Rao (1):
trace/kprobes: Fix check for kretprobe offset within function entry
Ravi Bangoria (1):
perf probe: Introduce util func is_sdt_event()
Stephane Eranian (1):
perf tools: Make perf_event__synthesize_mmap_events() scale
include/linux/kprobes.h | 1 +
kernel/kprobes.c | 40 ++--
kernel/trace/Kconfig | 2 +-
kernel/trace/trace_kprobe.c | 2 +-
tools/arch/x86/include/asm/cpufeatures.h | 5 +-
tools/perf/Documentation/perf-script.txt | 13 +-
tools/perf/builtin-script.c | 264 ++++++++++++++++++++-
tools/perf/util/Build | 1 +
tools/perf/util/dump-insn.c | 14 ++
tools/perf/util/dump-insn.h | 22 ++
tools/perf/util/event.c | 4 +-
.../util/intel-pt-decoder/intel-pt-insn-decoder.c | 24 ++
tools/perf/util/parse-events.h | 20 ++
tools/perf/util/probe-event.c | 9 +-
14 files changed, 381 insertions(+), 40 deletions(-)
create mode 100644 tools/perf/util/dump-insn.c
create mode 100644 tools/perf/util/dump-insn.h
Test results:
The first ones are container (docker) based builds of tools/perf with and
without libelf support, objtool where it is supported and samples/bpf/, ditto.
Where clang is available, it is also used to build perf with/without libelf.
Several are cross builds, the ones with -x-ARCH, and the android one, and those
may not have all the features built, due to lack of multi-arch devel packages,
available and being used so far on just a few, like
debian:experimental-x-{arm64,mipsel}.
The 'perf test' one will perform a variety of tests exercising
tools/perf/util/, tools/lib/{bpf,traceevent,etc}, as well as run perf commands
with a variety of command line event specifications to then intercept the
sys_perf_event syscall to check that the perf_event_attr fields are set up as
expected, among a variety of other unit tests.
Then there is the 'make -C tools/perf build-test' ones, that build tools/perf/
with a variety of feature sets, exercising the build with an incomplete set of
features as well as with a complete one. It is planned to have it run on each
of the containers mentioned above, using some container orchestration
infrastructure. Get in contact if interested in helping having this in place.
# dm
1 alpine:3.4: Ok
2 alpine:3.5: Ok
3 alpine:edge: Ok
4 android-ndk:r12b-arm: Ok
5 archlinux:latest: Ok
6 centos:5: Ok
7 centos:6: Ok
8 centos:7: Ok
9 debian:7: Ok
10 debian:8: Ok
11 debian:experimental: Ok
12 debian:experimental-x-arm64: Ok
13 debian:experimental-x-mips: Ok
14 debian:experimental-x-mips64: Ok
15 debian:experimental-x-mipsel: Ok
16 fedora:20: Ok
17 fedora:21: Ok
18 fedora:22: Ok
19 fedora:23: Ok
20 fedora:24: Ok
21 fedora:24-x-ARC-uClibc: Ok
22 fedora:25: Ok
23 fedora:rawhide: Ok
24 mageia:5: Ok
25 opensuse:13.2: Ok
26 opensuse:42.1: Ok
27 opensuse:tumbleweed: Ok
28 ubuntu:12.04.5: Ok
29 ubuntu:14.04.4: Ok
30 ubuntu:14.04.4-x-linaro-arm64: Ok
31 ubuntu:15.10: Ok
32 ubuntu:16.04: Ok
33 ubuntu:16.04-x-arm: Ok
34 ubuntu:16.04-x-arm64: Ok
35 ubuntu:16.04-x-powerpc: Ok
36 ubuntu:16.04-x-powerpc64: Ok
37 ubuntu:16.04-x-s390: Ok
38 ubuntu:16.10: Ok
39 ubuntu:17.04: Ok
# uname -a
Linux zoo 4.9.13-100.fc24.x86_64 #1 SMP Mon Feb 27 16:57:22 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
# perf test
1: vmlinux symtab matches kallsyms : Ok
2: Detect openat syscall event : Ok
3: Detect openat syscall event on all cpus : Ok
4: Read samples using the mmap interface : Ok
5: Parse event definition strings : Ok
6: PERF_RECORD_* events & perf_sample fields : Ok
7: Parse perf pmu format : Ok
8: DSO data read : Ok
9: DSO data cache : Ok
10: DSO data reopen : Ok
11: Roundtrip evsel->name : Ok
12: Parse sched tracepoints fields : Ok
13: syscalls:sys_enter_openat event fields : Ok
14: Setup struct perf_event_attr : Ok
15: Match and link multiple hists : Ok
16: 'import perf' in python : Ok
17: Breakpoint overflow signal handler : Ok
18: Breakpoint overflow sampling : Ok
19: Number of exit events of a simple workload : Ok
20: Software clock events period values : Ok
21: Object code reading : Ok
22: Sample parsing : Ok
23: Use a dummy software event to keep tracking: Ok
24: Parse with no sample_id_all bit set : Ok
25: Filter hist entries : Ok
26: Lookup mmap thread : Ok
27: Share thread mg : Ok
28: Sort output of hist entries : Ok
29: Cumulate child hist entries : Ok
30: Track with sched_switch : Ok
31: Filter fds with revents mask in a fdarray : Ok
32: Add fd to a fdarray, making it autogrow : Ok
33: kmod_path__parse : Ok
34: Thread map : Ok
35: LLVM search and compile :
35.1: Basic BPF llvm compile : Ok
35.2: kbuild searching : Ok
35.3: Compile source for BPF prologue generation: Ok
35.4: Compile source for BPF relocation : Ok
36: Session topology : Ok
37: BPF filter :
37.1: Basic BPF filtering : Ok
37.2: BPF pinning : Ok
37.3: BPF prologue generation : Ok
37.4: BPF relocation checker : Ok
38: Synthesize thread map : Ok
39: Remove thread map : Ok
40: Synthesize cpu map : Ok
41: Synthesize stat config : Ok
42: Synthesize stat : Ok
43: Synthesize stat round : Ok
44: Synthesize attr update : Ok
45: Event times : Ok
46: Read backward ring buffer : Ok
47: Print cpu map : Ok
48: Probe SDT events : Ok
49: is_printable_array : Ok
50: Print bitmap : Ok
51: perf hooks : Ok
52: builtin clang support : Skip (not compiled in)
53: unit_number__scnprintf : Ok
54: x86 rdpmc : Ok
55: Convert perf time to TSC : Ok
56: DWARF unwind : Ok
57: x86 instruction decoder - new instructions : Ok
58: Intel cqm nmi context read : Skip
#
$ make -C tools/perf build-test
make: Entering directory '/home/acme/git/linux/tools/perf'
- tarpkg: ./tests/perf-targz-src-pkg .
make_no_libelf_O: make NO_LIBELF=1
make_no_libperl_O: make NO_LIBPERL=1
make_no_scripts_O: make NO_LIBPYTHON=1 NO_LIBPERL=1
make_no_libnuma_O: make NO_LIBNUMA=1
make_pure_O: make
make_perf_o_O: make perf.o
make_no_newt_O: make NO_NEWT=1
make_help_O: make help
make_no_libaudit_O: make NO_LIBAUDIT=1
make_static_O: make LDFLAGS=-static
make_doc_O: make doc
make_clean_all_O: make clean all
make_debug_O: make DEBUG=1
make_minimal_O: make NO_LIBPERL=1 NO_LIBPYTHON=1 NO_NEWT=1 NO_GTK2=1 NO_DEMANGLE=1 NO_LIBELF=1 NO_LIBUNWIND=1 NO_BACKTRACE=1 NO_LIBNUMA=1 NO_LIBAUDIT=1 NO_LIBBIONIC=1 NO_LIBDW_DWARF_UNWIND=1 NO_AUXTRACE=1 NO_LIBBPF=1 NO_LIBCRYPTO=1 NO_SDT=1 NO_JVMTI=1
make_no_libunwind_O: make NO_LIBUNWIND=1
make_no_libbionic_O: make NO_LIBBIONIC=1
make_no_libpython_O: make NO_LIBPYTHON=1
make_no_slang_O: make NO_SLANG=1
make_with_babeltrace_O: make LIBBABELTRACE=1
make_install_prefix_O: make install prefix=/tmp/krava
make_no_ui_O: make NO_NEWT=1 NO_SLANG=1 NO_GTK2=1
make_util_pmu_bison_o_O: make util/pmu-bison.o
make_no_demangle_O: make NO_DEMANGLE=1
make_install_prefix_slash_O: make install prefix=/tmp/krava/
make_no_libdw_dwarf_unwind_O: make NO_LIBDW_DWARF_UNWIND=1
make_no_auxtrace_O: make NO_AUXTRACE=1
make_install_bin_O: make install-bin
make_util_map_o_O: make util/map.o
make_tags_O: make tags
make_no_libbpf_O: make NO_LIBBPF=1
make_install_O: make install
make_no_gtk2_O: make NO_GTK2=1
make_no_backtrace_O: make NO_BACKTRACE=1
make_with_clangllvm_O: make LIBCLANGLLVM=1
OK
make: Leaving directory '/home/acme/git/linux/tools/perf'
^ permalink raw reply [flat|nested] 3+ messages in thread* [PATCH 2/6] trace/kprobes: Fix check for kretprobe offset within function entry
2017-03-16 16:09 [GIT PULL 0/6] perf/core improvements and fixes Arnaldo Carvalho de Melo
@ 2017-03-16 16:09 ` Arnaldo Carvalho de Melo
2017-03-16 16:30 ` [GIT PULL 0/6] perf/core improvements and fixes Ingo Molnar
1 sibling, 0 replies; 3+ messages in thread
From: Arnaldo Carvalho de Melo @ 2017-03-16 16:09 UTC (permalink / raw)
To: Ingo Molnar
Cc: linux-kernel, Naveen N. Rao, Ananth N Mavinakayanahalli,
Michael Ellerman, Steven Rostedt, linuxppc-dev,
Arnaldo Carvalho de Melo
From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
perf specifies an offset from _text and since this offset is fed
directly into the arch-specific helper, kprobes tracer rejects
installation of kretprobes through perf. Fix this by looking up the
actual offset from a function for the specified sym+offset.
Refactor and reuse existing routines to limit code duplication -- we
repurpose kprobe_addr() for determining final kprobe address and we
split out the function entry offset determination into a separate
generic helper.
Before patch:
naveen@ubuntu:~/linux/tools/perf$ sudo ./perf probe -v do_open%return
probe-definition(0): do_open%return
symbol:do_open file:(null) line:0 offset:0 return:1 lazy:(null)
0 arguments
Looking at the vmlinux_path (8 entries long)
Using /boot/vmlinux for symbols
Open Debuginfo file: /boot/vmlinux
Try to find probe point from debuginfo.
Matched function: do_open [2d0c7ff]
Probe point found: do_open+0
Matched function: do_open [35d76dc]
found inline addr: 0xc0000000004ba9c4
Failed to find "do_open%return",
because do_open is an inlined function and has no return point.
An error occurred in debuginfo analysis (-22).
Trying to use symbols.
Opening /sys/kernel/debug/tracing//README write=0
Opening /sys/kernel/debug/tracing//kprobe_events write=1
Writing event: r:probe/do_open _text+4469776
Failed to write event: Invalid argument
Error: Failed to add events. Reason: Invalid argument (Code: -22)
naveen@ubuntu:~/linux/tools/perf$ dmesg | tail
<snip>
[ 33.568656] Given offset is not valid for return probe.
After patch:
naveen@ubuntu:~/linux/tools/perf$ sudo ./perf probe -v do_open%return
probe-definition(0): do_open%return
symbol:do_open file:(null) line:0 offset:0 return:1 lazy:(null)
0 arguments
Looking at the vmlinux_path (8 entries long)
Using /boot/vmlinux for symbols
Open Debuginfo file: /boot/vmlinux
Try to find probe point from debuginfo.
Matched function: do_open [2d0c7d6]
Probe point found: do_open+0
Matched function: do_open [35d76b3]
found inline addr: 0xc0000000004ba9e4
Failed to find "do_open%return",
because do_open is an inlined function and has no return point.
An error occurred in debuginfo analysis (-22).
Trying to use symbols.
Opening /sys/kernel/debug/tracing//README write=0
Opening /sys/kernel/debug/tracing//kprobe_events write=1
Writing event: r:probe/do_open _text+4469808
Writing event: r:probe/do_open_1 _text+4956344
Added new events:
probe:do_open (on do_open%return)
probe:do_open_1 (on do_open%return)
You can now use it in all perf tools, such as:
perf record -e probe:do_open_1 -aR sleep 1
naveen@ubuntu:~/linux/tools/perf$ sudo cat /sys/kernel/debug/kprobes/list
c000000000041370 k kretprobe_trampoline+0x0 [OPTIMIZED]
c0000000004ba0b8 r do_open+0x8 [DISABLED]
c000000000443430 r do_open+0x0 [DISABLED]
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/d8cd1ef420ec22e3643ac332fdabcffc77319a42.1488961018.git.naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
include/linux/kprobes.h | 1 +
kernel/kprobes.c | 40 ++++++++++++++++++++++++++--------------
kernel/trace/trace_kprobe.c | 2 +-
3 files changed, 28 insertions(+), 15 deletions(-)
diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h
index 177bdf6c6aeb..47e4da5b4fa2 100644
--- a/include/linux/kprobes.h
+++ b/include/linux/kprobes.h
@@ -268,6 +268,7 @@ extern void show_registers(struct pt_regs *regs);
extern void kprobes_inc_nmissed_count(struct kprobe *p);
extern bool arch_within_kprobe_blacklist(unsigned long addr);
extern bool arch_function_offset_within_entry(unsigned long offset);
+extern bool function_offset_within_entry(kprobe_opcode_t *addr, const char *sym, unsigned long offset);
extern bool within_kprobe_blacklist(unsigned long addr);
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 4780ec236035..d733479a10ee 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -1391,21 +1391,19 @@ bool within_kprobe_blacklist(unsigned long addr)
* This returns encoded errors if it fails to look up symbol or invalid
* combination of parameters.
*/
-static kprobe_opcode_t *kprobe_addr(struct kprobe *p)
+static kprobe_opcode_t *_kprobe_addr(kprobe_opcode_t *addr,
+ const char *symbol_name, unsigned int offset)
{
- kprobe_opcode_t *addr = p->addr;
-
- if ((p->symbol_name && p->addr) ||
- (!p->symbol_name && !p->addr))
+ if ((symbol_name && addr) || (!symbol_name && !addr))
goto invalid;
- if (p->symbol_name) {
- kprobe_lookup_name(p->symbol_name, addr);
+ if (symbol_name) {
+ kprobe_lookup_name(symbol_name, addr);
if (!addr)
return ERR_PTR(-ENOENT);
}
- addr = (kprobe_opcode_t *)(((char *)addr) + p->offset);
+ addr = (kprobe_opcode_t *)(((char *)addr) + offset);
if (addr)
return addr;
@@ -1413,6 +1411,11 @@ static kprobe_opcode_t *kprobe_addr(struct kprobe *p)
return ERR_PTR(-EINVAL);
}
+static kprobe_opcode_t *kprobe_addr(struct kprobe *p)
+{
+ return _kprobe_addr(p->addr, p->symbol_name, p->offset);
+}
+
/* Check passed kprobe is valid and return kprobe in kprobe_table. */
static struct kprobe *__get_valid_kprobe(struct kprobe *p)
{
@@ -1881,19 +1884,28 @@ bool __weak arch_function_offset_within_entry(unsigned long offset)
return !offset;
}
+bool function_offset_within_entry(kprobe_opcode_t *addr, const char *sym, unsigned long offset)
+{
+ kprobe_opcode_t *kp_addr = _kprobe_addr(addr, sym, offset);
+
+ if (IS_ERR(kp_addr))
+ return false;
+
+ if (!kallsyms_lookup_size_offset((unsigned long)kp_addr, NULL, &offset) ||
+ !arch_function_offset_within_entry(offset))
+ return false;
+
+ return true;
+}
+
int register_kretprobe(struct kretprobe *rp)
{
int ret = 0;
struct kretprobe_instance *inst;
int i;
void *addr;
- unsigned long offset;
-
- addr = kprobe_addr(&rp->kp);
- if (!kallsyms_lookup_size_offset((unsigned long)addr, NULL, &offset))
- return -EINVAL;
- if (!arch_function_offset_within_entry(offset))
+ if (!function_offset_within_entry(rp->kp.addr, rp->kp.symbol_name, rp->kp.offset))
return -EINVAL;
if (kretprobe_blacklist_size) {
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index 12fb540da0e5..013f4e7146d4 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -697,7 +697,7 @@ static int create_trace_kprobe(int argc, char **argv)
return ret;
}
if (offset && is_return &&
- !arch_function_offset_within_entry(offset)) {
+ !function_offset_within_entry(NULL, symbol, offset)) {
pr_info("Given offset is not valid for return probe.\n");
return -EINVAL;
}
--
2.9.3
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [GIT PULL 0/6] perf/core improvements and fixes
2017-03-16 16:09 [GIT PULL 0/6] perf/core improvements and fixes Arnaldo Carvalho de Melo
2017-03-16 16:09 ` [PATCH 2/6] trace/kprobes: Fix check for kretprobe offset within function entry Arnaldo Carvalho de Melo
@ 2017-03-16 16:30 ` Ingo Molnar
1 sibling, 0 replies; 3+ messages in thread
From: Ingo Molnar @ 2017-03-16 16:30 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo
Cc: linux-kernel, Adrian Hunter, Alexander Shishkin,
Alexei Starovoitov, Ananth N Mavinakayanahalli, Andi Kleen,
Andy Lutomirski, Anton Blanchard, Borislav Petkov, Brendan Gregg,
David Ahern, David Miller, He Kuang, Hemant Kumar, Jiri Olsa,
linuxppc-dev, Masami Hiramatsu, Mathieu Poirier, Michael Ellerman,
Namhyung Kim, Naveen N . Rao, Peter Zijlstra, Ravi Bangoria,
Srikar Dronamraju, Stephane Eranian, Steven Rostedt,
Sukadev Bhattiprolu, Taeung Song, Thomas Gleixner, Wang Nan,
Arnaldo Carvalho de Melo
* Arnaldo Carvalho de Melo <acme@kernel.org> wrote:
> Hi Ingo,
>
> Please consider pulling,
>
> - Arnaldo
>
> Test results at the end of this message, as usual.
>
> The following changes since commit ffa86c2f1a8862cf58c873f6f14d4b2c3250fb48:
>
> Merge tag 'perf-core-for-mingo-4.12-20170314' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2017-03-15 19:27:27 +0100)
>
> are available in the git repository at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo-4.12-20170316
>
> for you to fetch changes up to 61f35d750683b21e9e3836e309195c79c1daed74:
>
> uprobes: Default UPROBES_EVENTS to Y (2017-03-16 12:42:02 -0300)
>
> ----------------------------------------------------------------
> perf/core improvements and fixes:
>
> New features:
>
> - Add 'brstackinsn' field in 'perf script' to reuse the x86 instruction
> decoder used in the Intel PT code to study hot paths to samples (Andi Kleen)
>
> Kernel:
>
> - Default UPROBES_EVENTS to Y (Alexei Starovoitov)
>
> - Fix check for kretprobe offset within function entry (Naveen N. Rao)
>
> Infrastructure:
>
> - Introduce util func is_sdt_event() (Ravi Bangoria)
>
> - Make perf_event__synthesize_mmap_events() scale on older kernels where
> reading /proc/pid/maps is way slower than reading /proc/pid/task/pid/maps (Stephane Eranian)
>
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
>
> ----------------------------------------------------------------
> Andi Kleen (1):
> perf script: Add 'brstackinsn' for branch stacks
>
> Arnaldo Carvalho de Melo (2):
> tools headers: Sync {tools/,}arch/x86/include/asm/cpufeatures.h
> uprobes: Default UPROBES_EVENTS to Y
>
> Naveen N. Rao (1):
> trace/kprobes: Fix check for kretprobe offset within function entry
>
> Ravi Bangoria (1):
> perf probe: Introduce util func is_sdt_event()
>
> Stephane Eranian (1):
> perf tools: Make perf_event__synthesize_mmap_events() scale
>
> include/linux/kprobes.h | 1 +
> kernel/kprobes.c | 40 ++--
> kernel/trace/Kconfig | 2 +-
> kernel/trace/trace_kprobe.c | 2 +-
> tools/arch/x86/include/asm/cpufeatures.h | 5 +-
> tools/perf/Documentation/perf-script.txt | 13 +-
> tools/perf/builtin-script.c | 264 ++++++++++++++++++++-
> tools/perf/util/Build | 1 +
> tools/perf/util/dump-insn.c | 14 ++
> tools/perf/util/dump-insn.h | 22 ++
> tools/perf/util/event.c | 4 +-
> .../util/intel-pt-decoder/intel-pt-insn-decoder.c | 24 ++
> tools/perf/util/parse-events.h | 20 ++
> tools/perf/util/probe-event.c | 9 +-
> 14 files changed, 381 insertions(+), 40 deletions(-)
> create mode 100644 tools/perf/util/dump-insn.c
> create mode 100644 tools/perf/util/dump-insn.h
Pulled, thanks a lot Arnaldo!
Ingo
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2017-03-16 16:30 ` [GIT PULL 0/6] perf/core improvements and fixes Ingo Molnar
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