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linux/tools/perf/util
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Wang Nan f078464925 perf llvm: Allow dump llvm output object file using llvm.dump-obj 
Add a 'llvm.dump-obj' config option to enable perf dump BPF object files
compiled by LLVM.

This option is useful when using BPF objects in embedded platforms.
LLVM compiler won't be deployed in these platforms, and currently we
don't support dynamic compiling library.

Before this patch users have to explicitly issue llvm commands to
compile BPF scripts, and can't use helpers (like include path detection
and default macros) in perf. With this option, user is allowed to use
perf to compile their BPF objects then copy them into their embedded
platforms.

Committer notice:

Testing it:

  # cat ~/.perfconfig
  [llvm]
	dump-obj = true
  #
  # ls -la filter.o
  ls: cannot access filter.o: No such file or directory
  # cat filter.c
  #include <uapi/linux/bpf.h>
  #define SEC(NAME) __attribute__((section(NAME), used))

  SEC("func=hrtimer_nanosleep rqtp->tv_nsec")
  int func(void *ctx, int err, long nsec)
  {
	return nsec > 1000;
  }
  char _license[] SEC("license") = "GPL";
  int _version SEC("version") = LINUX_VERSION_CODE;
  # trace -e nanosleep --event filter.c usleep 6
  LLVM: dumping filter.o
     0.007 ( 0.007 ms): usleep/13976 nanosleep(rqtp: 0x7ffc5847f640                                        ) ...
     0.007 (         ): perf_bpf_probe:func:(ffffffff811137d0) tv_nsec=6000)
     0.070 ( 0.070 ms): usleep/13976  ... [continued]: nanosleep()) = 0
  # ls -la filter.o
  -rw-r--r--. 1 root root 776 Jun 20 17:01 filter.o
  # readelf -SW filter.o
  There are 7 section headers, starting at offset 0x148:

  Section Headers:
   [Nr] Name        Type       Address          Off    Size   ES Flg Lk Inf Al
   [ 0]             NULL       0000000000000000 000000 000000 00      0   0  0
   [ 1] .strtab     STRTAB     0000000000000000 0000e8 00005a 00      0   0  1
   [ 2] .text       PROGBITS   0000000000000000 000040 000000 00  AX  0   0  4
   [ 3] func=hrtimer_nanosleep rqtp->tv_nsec PROGBITS 0000000000000000 000040 000028 00  AX  0   0  8
   [ 4] license     PROGBITS   0000000000000000 000068 000004 00  WA  0   0  1
   [ 5] version     PROGBITS   0000000000000000 00006c 000004 00  WA  0   0  4
   [ 6] .symtab     SYMTAB     0000000000000000 000070 000078 18      1   2  8
  Key to Flags:
   W (write), A (alloc), X (execute), M (merge), S (strings)
   I (info), L (link order), G (group), T (TLS), E (exclude), x (unknown)
   O (extra OS processing required) o (OS specific), p (processor specific)
   #

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1466064161-48553-2-git-send-email-wangnan0@huawei.com
[ s/dumpping/dumping/g ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-21 13:18:34 -03:00
..
include tools lib: Move bitmap.[ch] from tools/perf/ to tools/{lib,include}/ 2016-01-08 12:35:46 -03:00
intel-pt-decoder perf intel-pt: Fix off-by-one comparison on maximum code 2016-04-25 20:35:59 -03:00
libunwind perf callchain: Support aarch64 cross-platform 2016-06-07 15:13:35 -03:00
scripting-engines perf tools: Fix usage of max_stack sysctl 2016-05-20 11:43:56 -03:00
alias.c
annotate.c perf annotate: Sort list of recognised instructions 2016-05-20 11:43:57 -03:00
annotate.h perf tools: Remove misplaced __maybe_unused 2016-03-23 12:03:04 -03:00
auxtrace.c perf tools: Add support for skipping itrace instructions 2016-03-30 11:14:09 -03:00
auxtrace.h perf tools: Add support for skipping itrace instructions 2016-03-30 11:14:09 -03:00
bpf-loader.c tools lib bpf: Rename set_private() to set_priv() 2016-06-06 18:19:49 -03:00
bpf-loader.h perf bpf: Clone bpf stdout events in multiple bpf scripts 2016-04-11 22:17:45 -03:00
bpf-prologue.c perf bpf: Add prologue for BPF programs for fetching arguments 2015-11-18 17:51:04 -03:00
bpf-prologue.h perf bpf: Add prologue for BPF programs for fetching arguments 2015-11-18 17:51:04 -03:00
Build perf callchain: Support aarch64 cross-platform 2016-06-07 15:13:35 -03:00
build-id.c perf buildid: Rename and export build_id_cache__cachedir() 2016-06-14 09:29:54 -03:00
build-id.h perf buildid: Rename and export build_id_cache__cachedir() 2016-06-14 09:29:54 -03:00
cache.h perf tools: Remove --perf-dir and --work-dir 2016-06-21 13:18:34 -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 hists: Move sort__has_parent into struct perf_hpp_list 2016-05-05 21:03:59 -03:00
callchain.h perf tools: Per event max-stack settings 2016-05-30 12:41:44 -03:00
cgroup.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
cgroup.h perf tools: Remove needless 'extern' from function prototypes 2016-03-23 15:06:35 -03:00
cloexec.c perf bench numa: Fix to show proper convergence stats 2015-06-25 12:28:35 -03:00
cloexec.h perf tools: Remove needless 'extern' from function prototypes 2016-03-23 15:06:35 -03:00
color.c perf config: Bring perf_default_config to the very beginning at main() 2016-02-26 19:49:16 -03:00
color.h perf tools: Remove trail argument to color vsprintf 2015-08-05 16:44:02 -03:00
comm.c perf comm: Use atomic.h for refcounting 2015-05-27 12:21:43 -03:00
comm.h
config.c perf tools: Remove some unused functions 2016-06-21 13:18:33 -03:00
config.h perf config: Introduce perf_config_set class 2016-04-14 09:00:42 -03:00
counts.c perf stat: Move perf_counts struct and functions into separate object 2015-08-08 14:16:49 -03:00
counts.h perf stat: Move perf_counts struct and functions into separate object 2015-08-08 14:16:49 -03:00
cpumap.c perf cpu_map: Add has() method 2016-04-13 10:11:50 -03:00
cpumap.h perf cpu_map: Add has() method 2016-04-13 10:11:50 -03:00
ctype.c perf ui/stdio: Align column header for hierarchy output 2016-02-24 20:21:12 -03:00
data-convert-bt.c perf ctf: Convert invalid chars in a string before set value 2016-05-27 12:08:40 -03:00
data-convert-bt.h perf data: Support using -f to override perf.data file ownership for 'convert' 2015-04-02 13:18:52 -03:00
data.c perf data: Add perf_data_file__switch() helper 2016-04-14 08:57:54 -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 perf tools: Make binary data printer code in trace_event public available 2016-02-24 11:38:01 -03:00
debug.h perf tools: Initialize libapi debug output 2016-02-16 17:12:59 -03:00
demangle-java.c perf symbols: add Java demangling support 2016-02-05 09:46:45 -03:00
demangle-java.h perf symbols: add Java demangling support 2016-02-05 09:46:45 -03:00
dso.c perf tools: Set buildid dir under symfs when --symfs is provided 2016-05-20 11:43:58 -03:00
dso.h perf buildid-cache: Use path/to/bin/buildid/elf instead of path/to/bin/buildid 2016-05-30 13:15:03 -03:00
dwarf-aux.c perf probe: Check if dwarf_getlocations() is available 2016-05-12 11:26:59 -03:00
dwarf-aux.h perf tools: Remove needless 'extern' from function prototypes 2016-03-23 15:06:35 -03:00
env.c perf tools: Add perf data cache feature 2016-02-16 17:13:00 -03:00
env.h perf tools: Add perf data cache feature 2016-02-16 17:13:00 -03:00
event.c perf record: Fix crash when kptr is restricted 2016-05-27 09:41:39 -03:00
event.h perf tools: Add time conversion event 2016-03-31 10:52:24 -03:00
evlist.c perf evlist: Fix alloc_mmap() failure path 2016-06-03 14:53:46 -03:00
evlist.h perf evlist: Choose correct reading direction according to evlist->backward 2016-05-30 12:41:45 -03:00
evsel_fprintf.c perf evsel: Move fprintf methods to separate source file 2016-04-14 19:46:58 -03:00
evsel.c perf/core improvements and fixes: 2016-06-08 09:29:23 +02:00
evsel.h perf evsel: Provide way to extract integer value from format_field 2016-06-03 14:53:46 -03:00
find-vdso-map.c
genelf_debug.c perf jit: add source line info support 2016-02-05 12:33:09 -03:00
genelf.c perf jit: add source line info support 2016-02-05 12:33:09 -03:00
genelf.h perf jit: genelf makes assumptions about endian 2016-03-30 18:12:06 -03:00
generate-cmdlist.sh perf tools: Do not show trace command if it's not compiled in 2016-01-08 12:46:17 -03:00
group.h perf stat: Basic support for TopDown in perf stat 2016-06-06 17:04:15 -03:00
header.c perf tools: Use SBUILD_ID_SIZE where applicable 2016-05-11 13:06:06 -03:00
header.h perf tools: Remove misplaced __maybe_unused 2016-03-23 12:03:04 -03:00
help-unknown-cmd.c perf help: Do not use ALLOC_GROW in add_cmd_list 2016-05-10 11:58:09 -03:00
help-unknown-cmd.h perf tools: Move help_unknown_cmd() to its own file 2015-12-14 12:30:37 -03:00
hist.c perf hists: Rename __hists__add_entry to hists__add_entry 2016-06-21 13:18:33 -03:00
hist.h perf hists: Rename __hists__add_entry to hists__add_entry 2016-06-21 13:18:33 -03:00
intel-bts.c perf tools: Add support for skipping itrace instructions 2016-03-30 11:14:09 -03:00
intel-bts.h perf tools: Add Intel BTS support 2015-08-21 11:34:10 -03:00
intel-pt.c Merge branch 'perf/urgent' into perf/core, to resolve conflict 2016-04-23 14:12:10 +02:00
intel-pt.h perf tools: Pass Intel PT information for decoding MTC and CYC 2015-08-24 17:46:43 -03:00
intlist.c
intlist.h
jit.h perf tools: Remove needless 'extern' from function prototypes 2016-03-23 15:06:35 -03:00
jitdump.c perf jit: memset() variable 'st' using the correct size 2016-04-19 12:37:01 -03:00
jitdump.h perf jit: Add support for using TSC as a timestamp 2016-04-01 18:42:55 -03:00
kvm-stat.h perf kvm/powerpc: Port perf kvm stat to powerpc 2016-01-29 17:49:54 -03:00
levenshtein.c
levenshtein.h
llvm-utils.c perf llvm: Allow dump llvm output object file using llvm.dump-obj 2016-06-21 13:18:34 -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: Add lzma decompression support for kernel module 2015-03-21 14:53:40 -03:00
machine.c perf/core improvements and fixes: 2016-06-08 09:34:15 +02:00
machine.h perf trace: Warn when trying to resolve kernel addresses with kptr_restrict=1 2016-05-20 11:43:54 -03:00
map.c perf tools: Use SBUILD_ID_SIZE where applicable 2016-05-11 13:06:06 -03:00
map.h perf maps: Introduce maps__find_symbol_by_name() 2015-09-30 18:34:25 -03:00
mem-events.c perf mem: Add --ldlat option 2016-06-15 10:35:27 -03:00
mem-events.h perf mem: Add --ldlat option 2016-06-15 10:35:27 -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 subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
parse-branch-options.h perf tools: Move branch option parsing to own file 2015-05-27 21:02:17 -03:00
parse-events.c Merge branch 'linus' into perf/core, to refresh the branch 2016-06-08 09:26:46 +02:00
parse-events.h perf tools: Per event max-stack settings 2016-05-30 12:41:44 -03:00
parse-events.l perf stat: Basic support for TopDown in perf stat 2016-06-06 17:04:15 -03:00
parse-events.y perf tools: Explicitly declare inc_group_count as a void function 2016-03-08 10:11:16 +01:00
parse-regs-options.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
parse-regs-options.h perf record: Add ability to name registers to record 2015-08-31 18:01:33 -03:00
path.c perf tools: Remove some unused functions 2016-06-21 13:18:33 -03:00
perf_regs.c perf tools: Fix perf regs mask generation 2016-05-11 21:54:06 +10:00
perf_regs.h perf tools: Fix build break on powerpc due to sample_reg_masks 2015-09-30 18:34:27 -03:00
PERF-VERSION-GEN
pmu.c perf pmu: Make pmu_formats_string to check return value of strbuf 2016-05-10 11:57:52 -03:00
pmu.h perf tools: Add perf_pmu__format_bits() 2015-08-06 16:49:01 -03:00
pmu.l
pmu.y
probe-event.c perf probe: Add --cache option to cache the probe definitions 2016-06-15 14:34:42 -03:00
probe-event.h perf probe: Add --cache option to cache the probe definitions 2016-06-15 14:34:42 -03:00
probe-file.c perf probe: Introduce perf_cache interfaces 2016-06-15 14:34:31 -03:00
probe-file.h perf probe: Introduce perf_cache interfaces 2016-06-15 14:34:31 -03:00
probe-finder.c perf probe: Check the return value of strbuf APIs 2016-05-10 11:53:34 -03:00
probe-finder.h perf tools: Remove needless 'extern' from function prototypes 2016-03-23 15:06:35 -03:00
pstack.c perf tools: Introduce pstack_peek() 2015-05-05 18:13:22 -03:00
pstack.h perf tools: Introduce pstack_peek() 2015-05-05 18:13:22 -03:00
python-ext-sources perf symbols: Move fprintf routines to separate object file 2016-04-14 19:46:53 -03:00
python.c perf python: Support the PERF_RECORD_SWITCH event 2015-10-07 19:41:50 -03:00
quote.c perf tools: Make alias handler to check return value of strbuf 2016-05-10 11:56:52 -03:00
quote.h perf tools: Make alias handler to check return value of strbuf 2016-05-10 11:56:52 -03:00
rb_resort.h perf tools: Add template for generating rbtree resort class 2016-05-05 21:03:55 -03:00
rblist.c
rblist.h
record.c perf evsel: Do not use globals in config() 2016-04-11 22:18:20 -03:00
session.c Merge branch 'linus' into perf/core, to refresh the branch 2016-06-08 09:26:46 +02:00
session.h perf evsel: Move some methods from session.[ch] to evsel.[ch] 2016-04-13 10:11:52 -03:00
setup.py perf tools: Fix python extension build 2016-02-29 11:18:25 -03:00
sort.c perf hists: Replace perf_evsel arg perf_hpp_fmt's width callback 2016-06-15 10:50:04 -03:00
sort.h perf report: Add srcline_from/to branch sort keys 2016-05-23 11:25:16 -03:00
srcline.c perf tools: Always use non inlined file name for 'srcfile' sort key 2015-09-02 16:30:46 -03:00
stat-shadow.c perf stat: Add computation of TopDown formulas 2016-06-06 17:04:16 -03:00
stat.c perf stat: Add computation of TopDown formulas 2016-06-06 17:04:16 -03:00
stat.h perf stat: Add computation of TopDown formulas 2016-06-06 17:04:16 -03:00
strbuf.c perf tools: Rewrite strbuf not to die() 2016-05-10 11:27:58 -03:00
strbuf.h perf tools: Rewrite strbuf not to die() 2016-05-10 11:27:58 -03:00
strfilter.c perf tools: Add strfilter__string to recover rules string 2015-05-04 12:43:54 -03:00
strfilter.h perf tools: Add strfilter__string to recover rules string 2015-05-04 12:43:54 -03:00
string.c tools: Adopt memdup() from tools/perf, moving it to tools/lib/string.c 2015-11-18 17:51:02 -03:00
strlist.c perf tools: Add file_only config option to strlist 2016-01-12 12:42:07 -03:00
strlist.h perf tools: Add file_only config option to strlist 2016-01-12 12:42:07 -03:00
svghelper.c perf tools: Add reference counting for cpu_map object 2015-06-25 15:15:50 -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: Move fprintf routines to separate object file 2016-04-14 19:46:53 -03:00
symbol-elf.c perf symbols: Fix kallsyms perf test on ppc64le 2016-05-05 21:04:03 -03:00
symbol-minimal.c perf symbols: Fix type error when reading a build-id 2015-10-28 10:02:00 -03:00
symbol.c perf buildid-cache: Use path/to/bin/buildid/elf instead of path/to/bin/buildid 2016-05-30 13:15:03 -03:00
symbol.h perf report: Add srcline_from/to branch sort keys 2016-05-23 11:25:16 -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: Simplify handling of strerror_r return 2015-03-24 12:08:30 -03:00
target.h
term.c perf tools: Move term functions out of util.c 2015-12-09 13:42:02 -03:00
term.h perf tools: Move term functions out of util.c 2015-12-09 13:42:02 -03:00
thread_map.c perf thread_map: Use readdir() instead of deprecated readdir_r() 2016-05-12 11:26:58 -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: Expose usage of the callchain db export via the python api 2016-05-06 13:00:54 -03:00
thread-stack.h perf script: Expose usage of the callchain db export via the python api 2016-05-06 13:00:54 -03:00
thread.c perf unwind: Check the target platform before assigning unwind methods 2016-06-07 15:09:36 -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 tools lib api fs: Move tracing_path interface into api/fs/tracing_path.c 2015-09-04 12:00:45 -03:00
trace-event-parse.c irq_poll: make blk-iopoll available outside the block layer 2015-12-11 11:52:24 -08:00
trace-event-read.c perf tools: Stop reading the kallsyms data from perf.data 2015-07-23 22:51:11 -03:00
trace-event-scripting.c perf scripting: No need to pass thread twice to the scripting callbacks 2015-04-02 13:18:41 -03:00
trace-event.c tools lib api fs: Adopt filename__read_str from perf 2016-02-16 17:12:56 -03:00
trace-event.h perf script: Add process_stat/process_stat_interval scripting interface 2016-01-06 20:11:15 -03:00
trigger.h perf tools: Introduce trigger class 2016-04-28 09:58:58 -03:00
tsc.c perf tools: Use 64-bit shifts with (TSC) time conversion 2016-03-08 10:11:18 +01:00
tsc.h perf jit: Add support for using TSC as a timestamp 2016-04-01 18:42:55 -03:00
unwind-libdw.c perf libdw: Check for mmaps also in MAP__VARIABLE tree 2016-01-08 14:16:57 -03:00
unwind-libdw.h perf callchain: Add order support for libdw DWARF unwinder 2015-11-23 18:31:13 -03:00
unwind-libunwind-local.c perf unwind: Introduce flag to separate local/remote unwind compilation 2016-06-07 15:11:46 -03:00
unwind-libunwind.c perf callchain: Support aarch64 cross-platform 2016-06-07 15:13:35 -03:00
unwind.h perf unwind: Change fixed name of libunwind__arch_reg_id to macro 2016-06-07 15:11:46 -03:00
usage.c perf tools: Simplify die() mechanism 2016-03-23 12:32:31 -03:00
util.c perf tools: Fix rm_rf() to handle non-regular files correctly 2016-06-14 09:29:54 -03:00
util.h perf tools: Separate accounting of contexts and real addresses in a stack trace 2016-05-16 23:11:54 -03:00
values.c
values.h
vdso.c perf tools: Fix lockup using 32-bit compat vdso 2015-07-07 11:05:08 -03:00
vdso.h perf machine: Fix up vdso methods names 2015-05-29 12:43:44 -03:00
xyarray.c perf tools: Introduce xyarray__reset function 2015-06-16 10:34:39 -03:00
xyarray.h perf tools: Introduce xyarray__reset function 2015-06-16 10:34:39 -03:00
zlib.c