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a074865e60
linux/tools/perf/util
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Wang Nan a074865e60 perf tools: Introduce perf hooks 
Perf hooks allow hooking user code at perf events. They can be used for
manipulation of BPF maps, taking snapshot and reporting results. In this
patch two perf hook points are introduced: record_start and record_end.

To avoid buggy user actions, a SIGSEGV signal handler is introduced into
'perf record'. It turns off perf hook if it causes a segfault and report
an error to help debugging.

A test case for perf hook is introduced.

Test result:
  $ ./buildperf/perf test -v hook
  50: Test perf hooks                                          :
  --- start ---
  test child forked, pid 10311
  SIGSEGV is observed as expected, try to recover.
  Fatal error (SEGFAULT) in perf hook 'test'
  test child finished with 0
  ---- end ----
  Test perf hooks: Ok

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Joe Stringer <joe@ovn.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/20161126070354.141764-5-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-11-29 12:13:27 -03:00
..
include perf probe: Support probing on offline cross-arch binary 2016-09-01 12:41:09 -03:00
intel-pt-decoder perf intel-pt/bts: Report instruction bytes and length in sample 2016-10-24 10:31:32 -03:00
libunwind perf unwind: Fix wrongly used regs for aarch64 unwind 2016-06-23 10:30:31 -03:00
scripting-engines tools: Introduce tools/include/linux/time64.h for *SEC_PER_*SEC macros 2016-08-23 15:37:33 -03:00
alias.c perf tools: Remove needless includes from cache.h 2016-07-12 15:19:58 -03:00
annotate.c perf annotate: Initial PowerPC support 2016-11-25 10:38:56 -03:00
annotate.h perf annotate: Remove duplicate 'name' field from disasm_line 2016-11-25 10:24:16 -03:00
auxtrace.c perf record: Add support for using symbols in address filters 2016-09-29 11:17:02 -03:00
auxtrace.h perf record: Add support for using symbols in address filters 2016-09-29 11:17:02 -03:00
block-range.c perf annotate: Add branch stack / basic block 2016-09-08 13:44:03 -03:00
block-range.h perf annotate: Add branch stack / basic block 2016-09-08 13:44:03 -03:00
bpf-loader.c perf tools: Fix typo "No enough" to "Not enough" 2016-10-24 11:07:42 -03:00
bpf-loader.h perf bpf: Rename bpf__foreach_tev() to bpf__foreach_event() 2016-07-13 23:09:03 -03:00
bpf-prologue.c
bpf-prologue.h
Build perf tools: Introduce perf hooks 2016-11-29 12:13:27 -03:00
build-id.c perf probe: Increase debug level of SDT debug messages 2016-09-29 11:17:02 -03:00
build-id.h perf probe: Support @BUILDID or @FILE suffix for SDT events 2016-07-13 23:09:08 -03:00
cache.h perf tools: Remove needless includes from cache.h 2016-07-12 15:19:58 -03:00
call-path.c perf tools: Refactor code to move call path handling out of thread-stack 2016-05-06 13:00:43 -03:00
call-path.h perf tools: Refactor code to move call path handling out of thread-stack 2016-05-06 13:00:43 -03:00
callchain.c perf report: Calculate and return the branch flag counting 2016-11-14 13:25:58 -03:00
callchain.h perf report: Calculate and return the branch flag counting 2016-11-14 13:25:58 -03:00
cgroup.c perf evlist: Rename for_each() macros to for_each_entry() 2016-06-23 11:26:15 -03:00
cgroup.h perf tools: Remove needless 'extern' from function prototypes 2016-03-23 15:06:35 -03:00
cloexec.c perf tools: Introduce weak alternative to sched_getcpu() 2016-07-12 15:20:34 -03:00
cloexec.h perf tools: Remove needless 'extern' from function prototypes 2016-03-23 15:06:35 -03:00
color.c perf tools: Uninline scnprintf() and vscnprint() 2016-07-12 15:20:24 -03:00
color.h
comm.c
comm.h
config.c perf config: Mark where are config items from (user or system) 2016-11-14 13:10:37 -03:00
config.h perf config: Mark where are config items from (user or system) 2016-11-14 13:10:37 -03:00
counts.c
counts.h
cpumap.c perf cpu_map: Add more helpers 2016-07-18 19:42:47 -03:00
cpumap.h perf cpu_map: Add more helpers 2016-07-18 19:42:47 -03:00
cs-etm.h perf tools: Add coresight etm PMU record capabilities 2016-09-22 12:19:40 -03:00
ctype.c
data-convert-bt.c perf data: Fix building in 32 bit platform with libbabeltrace 2016-09-28 10:38:20 -03:00
data-convert-bt.h perf data ctf: Pass convert options through opts structure 2016-06-28 10:54:55 -03:00
data-convert.h perf data ctf: Add 'all' option 2016-06-28 10:54:56 -03:00
data.c tools: Introduce str_error_r() 2016-07-12 15:19:47 -03:00
data.h perf data: Add perf_data_file__switch() helper 2016-04-14 08:57:54 -03:00
db-export.c perf thread: Adopt get_main_thread from db-export.c 2016-05-30 12:41:43 -03:00
db-export.h perf script: Add call path id to exported sample in db export 2016-05-06 13:00:53 -03:00
debug.c tools: Introduce tools/include/linux/time64.h for *SEC_PER_*SEC macros 2016-08-23 15:37:33 -03:00
debug.h tools: Introduce str_error_r() 2016-07-12 15:19:47 -03:00
demangle-java.c
demangle-java.h
demangle-rust.c perf symbols: Add Rust demangling 2016-07-12 16:12:38 -03:00
demangle-rust.h perf symbols: Add Rust demangling 2016-07-12 16:12:38 -03:00
drv_configs.c perf pmu: Push configuration down to PMU driver 2016-09-22 12:19:41 -03:00
drv_configs.h perf pmu: Push configuration down to PMU driver 2016-09-22 12:19:41 -03:00
dso.c perf symbols: Do not open device files 2016-09-20 16:20:21 -03:00
dso.h perf tools: Uninline scnprintf() and vscnprint() 2016-07-12 15:20:24 -03:00
dwarf-aux.c perf probe: Match linkage name with mangled name 2016-09-29 11:17:08 -03:00
dwarf-aux.h perf probe: Match linkage name with mangled name 2016-09-29 11:17:08 -03:00
dwarf-regs.c perf probe: Support probing on offline cross-arch binary 2016-09-01 12:41:09 -03:00
env.c perf header: Transform nodes string info to struct 2016-07-04 19:39:01 -03:00
env.h perf header: Transform nodes string info to struct 2016-07-04 19:39:01 -03:00
event.c perf tools: Fix MMAP event synthesis broken by MAP_HUGETLB change 2016-09-28 10:21:15 -03:00
event.h perf intel-pt/bts: Report instruction bytes and length in sample 2016-10-24 10:31:32 -03:00
evlist.c perf tools: Experiment with cppcheck 2016-10-03 11:24:13 -03:00
evlist.h perf evlist: Make {pause,resume} internal helpers 2016-07-15 17:27:50 -03:00
evsel_fprintf.c perf callchain: Add option to skip ignore symbol when printing callchains 2016-11-25 10:49:38 -03:00
evsel.c perf tools: Show event fd in debug output 2016-11-23 10:44:03 -03:00
evsel.h perf callchain: Add option to skip ignore symbol when printing callchains 2016-11-25 10:49:38 -03:00
find-vdso-map.c
genelf_debug.c
genelf.c perf jit: Generate .eh_frame/.eh_frame_hdr in DSO 2016-10-24 11:07:40 -03:00
genelf.h perf jit: Generate .eh_frame/.eh_frame_hdr in DSO 2016-10-24 11:07:40 -03:00
generate-cmdlist.sh
group.h perf stat: Basic support for TopDown in perf stat 2016-06-06 17:04:15 -03:00
header.c perf header: Display feature name on write failure 2016-10-24 11:07:34 -03:00
header.h perf pmu: Use pmu_events table to create aliases 2016-10-03 19:58:00 -03:00
help-unknown-cmd.c perf tools: Uninline scnprintf() and vscnprint() 2016-07-12 15:20:24 -03:00
help-unknown-cmd.h
hist.c Merge branch 'linus' into perf/core, to pick up fixes 2016-11-24 05:09:08 +01:00
hist.h perf c2c report: Limit the cachelines table entries 2016-10-21 10:31:57 -03:00
intel-bts.c perf intel-pt/bts: Report instruction bytes and length in sample 2016-10-24 10:31:32 -03:00
intel-bts.h
intel-pt.c perf intel-pt/bts: Report instruction bytes and length in sample 2016-10-24 10:31:32 -03:00
intel-pt.h perf intel-pt: Record address filter in AUXTRACE_INFO event 2016-09-29 11:17:05 -03:00
intlist.c
intlist.h perf intlist: Rename for_each() macros to for_each_entry() 2016-06-23 11:39:19 -03:00
jit.h perf tools: Remove needless 'extern' from function prototypes 2016-03-23 15:06:35 -03:00
jitdump.c perf jit: Check JITHEADER_VERSION 2016-10-24 11:07:40 -03:00
jitdump.h perf jit: Add unwinding support 2016-10-24 11:07:39 -03:00
kvm-stat.h
levenshtein.c perf tools: Remove needless includes from cache.h 2016-07-12 15:19:58 -03:00
levenshtein.h
llvm-utils.c perf tools: Fix typo "No enough" to "Not enough" 2016-10-24 11:07:42 -03:00
llvm-utils.h perf llvm: Allow dump llvm output object file using llvm.dump-obj 2016-06-21 13:18:34 -03:00
lzma.c perf tools: Fix error handling of lzma decompression 2016-08-24 11:20:58 -03:00
machine.c perf report: Add branch flag to callchain cursor node 2016-11-14 13:15:56 -03:00
machine.h perf symbols: Remove symbol_filter_t machinery 2016-09-05 11:14:50 -03:00
map.c perf hists browser: Dynamically change verbosity level 2016-10-24 11:07:42 -03:00
map.h perf symbols: Remove symbol_filter_t machinery 2016-09-05 11:14:50 -03:00
mem-events.c perf c2c report: Add struct c2c_stats::tot_hitm field 2016-11-23 10:44:05 -03:00
mem-events.h perf c2c report: Add struct c2c_stats::tot_hitm field 2016-11-23 10:44:05 -03:00
ordered-events.c perf ordered_events: Introduce reinit() 2016-04-14 08:57:54 -03:00
ordered-events.h perf ordered_events: Introduce reinit() 2016-04-14 08:57:54 -03:00
parse-branch-options.c perf tools: Add missing object file to the python binding linkage list 2016-10-28 11:29:45 -02:00
parse-branch-options.h perf tools: Implement branch_type event parameter 2016-10-24 11:07:35 -03:00
parse-events.c perf tools: Implement branch_type event parameter 2016-10-24 11:07:35 -03:00
parse-events.h perf list: Support long jevents descriptions 2016-10-03 21:35:47 -03:00
parse-events.l perf jevents: Handle events including .c and .o 2016-10-17 11:24:18 -03:00
parse-events.y perf tools: Add infrastructure for PMU specific configuration 2016-09-13 17:09:11 -03:00
parse-regs-options.c
parse-regs-options.h
path.c perf tools: Remove needless includes from cache.h 2016-07-12 15:19:58 -03:00
perf_regs.c perf tools: Fix perf regs mask generation 2016-05-11 21:54:06 +10:00
perf_regs.h
perf-hooks-list.h perf tools: Introduce perf hooks 2016-11-29 12:13:27 -03:00
perf-hooks.c perf tools: Introduce perf hooks 2016-11-29 12:13:27 -03:00
perf-hooks.h perf tools: Introduce perf hooks 2016-11-29 12:13:27 -03:00
PERF-VERSION-GEN
pmu.c perf list: Support matching by topic 2016-10-28 11:29:42 -02:00
pmu.h perf list jevents: Add support for event list topics 2016-10-03 21:35:47 -03:00
pmu.l
pmu.y
probe-event.c perf probe: Check if *ptr2 is zero and not ptr2 2016-10-03 11:24:12 -03:00
probe-event.h perf tools: Add missing struct definition in probe_event.h 2016-11-25 11:25:46 -03:00
probe-file.c perf probe: Increase debug level of SDT debug messages 2016-09-29 11:17:02 -03:00
probe-file.h perf probe: Add supported for type casting by the running kernel 2016-08-23 17:03:31 -03:00
probe-finder.c perf probe: Skip if the function address is 0 2016-09-29 11:17:07 -03:00
probe-finder.h perf probe: Support probing on offline cross-arch binary 2016-09-01 12:41:09 -03:00
pstack.c
pstack.h
python-ext-sources perf tools: Add missing object file to the python binding linkage list 2016-10-28 11:29:45 -02:00
python.c perf tools: Make is_printable_array global 2016-07-18 19:49:47 -03:00
quote.c perf tools: Normalize sq_quote_argv() error reporting 2016-10-24 11:07:44 -03:00
quote.h perf quote: Disentangle headers 2016-07-12 15:19:55 -03:00
rb_resort.h perf rb_resort: Rename for_each() macros to for_each_entry() 2016-06-23 11:35:07 -03:00
rblist.c
rblist.h
record.c perf evlist: Rename for_each() macros to for_each_entry() 2016-06-23 11:26:15 -03:00
session.c perf report: Move captured info to generic header info 2016-10-24 11:07:33 -03:00
session.h perf evsel: Move some methods from session.[ch] to evsel.[ch] 2016-04-13 10:11:52 -03:00
setup.py
sort.c perf c2c report: Add src line sort key 2016-10-19 13:18:31 -03:00
sort.h perf c2c report: Add src line sort key 2016-10-19 13:18:31 -03:00
srcline.c
stat-shadow.c perf stat: Add computation of TopDown formulas 2016-06-06 17:04:16 -03:00
stat.c perf evlist: Rename for_each() macros to for_each_entry() 2016-06-23 11:26:15 -03:00
stat.h perf stat: Add computation of TopDown formulas 2016-06-06 17:04:16 -03:00
strbuf.c perf strbuf: Add missing headers 2016-07-12 15:19:55 -03:00
strbuf.h perf tools: Experiment with cppcheck 2016-10-03 11:24:13 -03:00
strfilter.c
strfilter.h
string.c perf list: Make vendor event matching case insensitive 2016-10-24 11:07:46 -03:00
strlist.c
strlist.h perf tools: Rename strlist_for_each() macros to for_each_entry() 2016-06-23 11:35:01 -03:00
svghelper.c perf timechart: Use NSEC_PER_U?SEC 2016-08-23 15:37:33 -03:00
svghelper.h perf tools: Remove needless 'extern' from function prototypes 2016-03-23 15:06:35 -03:00
symbol_fprintf.c perf symbols: Print symbol offsets conditionally 2016-11-23 10:44:06 -03:00
symbol-elf.c perf symbols: Remove symbol_filter_t machinery 2016-09-05 11:14:50 -03:00
symbol-minimal.c perf symbols: Remove symbol_filter_t machinery 2016-09-05 11:14:50 -03:00
symbol.c perf record: Fix segfault when running with suid and kptr_restrict is 1 2016-11-25 11:11:10 -03:00
symbol.h perf sched timehist: Mark schedule function in callchains 2016-11-25 10:49:43 -03:00
syscalltbl.c perf tools: Build syscall table .c header from kernel's syscall_64.tbl 2016-04-08 09:58:14 -03:00
syscalltbl.h perf tools: Allow generating per-arch syscall table arrays 2016-04-08 09:58:14 -03:00
target.c perf target: str_error_r() always returns the buffer it receives 2016-07-29 11:54:35 -03:00
target.h
term.c
term.h
thread_map.c perf tools: Rename strlist_for_each() macros to for_each_entry() 2016-06-23 11:35:01 -03:00
thread_map.h perf thread_map: Make new_by_tid_str constructor public 2016-04-13 10:11:51 -03:00
thread-stack.c perf script: Add callindent option 2016-06-23 17:04:26 -03:00
thread-stack.h perf script: Add callindent option 2016-06-23 17:04:26 -03:00
thread.c perf tools: Experiment with cppcheck 2016-10-03 11:24:13 -03:00
thread.h perf unwind: Move unwind__prepare_access from thread_new into thread__insert_map 2016-06-07 12:08:52 -03:00
tool.h perf tools: Add time conversion event 2016-03-31 10:52:24 -03:00
top.c
top.h perf top: Use machine->kptr_restrict_warned 2016-05-20 11:43:55 -03:00
trace-event-info.c
trace-event-parse.c
trace-event-read.c
trace-event-scripting.c perf scripting: Don't die if scripting can't be setup, disable it 2016-10-28 11:29:44 -02:00
trace-event.c perf tools: Introduce trace_event__tp_format_id() 2016-07-12 16:14:52 -03:00
trace-event.h perf tools: Introduce trace_event__tp_format_id() 2016-07-12 16:14:52 -03:00
trigger.h perf tools: Introduce trigger class 2016-04-28 09:58:58 -03:00
tsc.c
tsc.h perf jit: Add support for using TSC as a timestamp 2016-04-01 18:42:55 -03:00
unwind-libdw.c perf unwind: Use addr_location::addr instead of ip for entries 2016-08-16 15:23:29 -03:00
unwind-libdw.h
unwind-libunwind-local.c perf jit: Do not assume pgoff is zero 2016-10-24 11:07:39 -03:00
unwind-libunwind.c perf unwind: Add initialized arg into unwind__prepare_access 2016-07-04 20:27:12 -03:00
unwind.h perf unwind: Add initialized arg into unwind__prepare_access 2016-07-04 20:27:12 -03:00
usage.c perf tools: Simplify die() mechanism 2016-03-23 12:32:31 -03:00
util.c perf tools: Fix kernel version error in ubuntu 2016-11-25 11:00:30 -03:00
util.h perf tools: Introduce timestamp__scnprintf_usec() 2016-10-28 11:29:40 -02:00
values.c perf tools: Use normal error reporting when processing PERF_RECORD_READ events 2016-10-24 11:07:44 -03:00
values.h perf tools: Use normal error reporting when processing PERF_RECORD_READ events 2016-10-24 11:07:44 -03:00
vdso.c perf tools: Find right DSO taking into account if binary is 32 or 64-bit 2016-06-23 10:25:58 -03:00
vdso.h
xyarray.c
xyarray.h
zlib.c