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linux_dsm_epyc7002/tools/perf/util
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Arnaldo Carvalho de Melo ecc4c5614b perf tools: Propagate perf_config() errors 
Previously these were being ignored, sometimes silently.

Stop doing that, emitting debug messages and handling the errors.

Testing it:

  $ cat ~/.perfconfig
  cat: /home/acme/.perfconfig: No such file or directory
  $ perf stat -e cycles usleep 1

   Performance counter stats for 'usleep 1':

           938,996      cycles:u

       0.003813731 seconds time elapsed

  $ perf top --stdio
  Error:
  You may not have permission to collect system-wide stats.

  Consider tweaking /proc/sys/kernel/perf_event_paranoid,
  <SNIP>
  [ perf record: Captured and wrote 0.019 MB perf.data (7 samples) ]
  [acme@jouet linux]$ perf report --stdio
  # To display the perf.data header info, please use --header/--header-only options.
  # Overhead  Command  Shared Object      Symbol
  # ........  .......  .................  .........................
    71.77%  usleep   libc-2.24.so       [.] _dl_addr
    27.07%  usleep   ld-2.24.so         [.] _dl_next_ld_env_entry
     1.13%  usleep   [kernel.kallsyms]  [k] page_fault
  $
  $ touch ~/.perfconfig
  $ ls -la ~/.perfconfig
  -rw-rw-r--. 1 acme acme 0 Jan 27 12:14 /home/acme/.perfconfig
  $
  $ perf stat -e instructions usleep 1

   Performance counter stats for 'usleep 1':

           244,610      instructions:u

       0.000805383 seconds time elapsed

  $
  [root@jouet ~]# chown acme.acme ~/.perfconfig
  [root@jouet ~]# perf stat -e cycles usleep 1
    Warning: File /root/.perfconfig not owned by current user or root, ignoring it.

   Performance counter stats for 'usleep 1':

           937,615      cycles

       0.000836931 seconds time elapsed
  #

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-j2rq96so6xdqlr8p8rd6a3jx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-01-27 12:23:33 -03:00
..
c++ perf clang: Compile BPF script using builtin clang support 2016-12-05 15:51:45 -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 perf scripting perl: Do not die() when not founding event for a type 2017-01-26 11:42:59 -03:00
alias.c perf tools: Remove needless includes from cache.h 2016-07-12 15:19:58 -03:00
annotate.c perf annotate: Don't throw error for zero length symbols 2016-12-20 12:00:32 -03:00
annotate.h perf annotate: Fix jump target outside of function address range 2016-12-15 16:25:46 -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 clang: Compile BPF script using builtin clang support 2016-12-05 15:51:45 -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 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 tools: Move two variables usied in libperf from perf.c 2017-01-17 11:36:45 -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 tools: Propagate perf_config() errors 2017-01-27 12:23:33 -03:00
callchain.h perf callchain: Introduce callchain_cursor__copy() 2016-12-07 12:00:33 -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 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: Propagate perf_config() errors 2017-01-27 12:23:33 -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 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 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 perf ui/stdio: Align column header for hierarchy output 2016-02-24 20:21:12 -03:00
data-convert-bt.c perf tools: Propagate perf_config() errors 2017-01-27 12:23:33 -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 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
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 unwind: Fix looking up dwarf unwind stack info 2017-01-18 12:29:52 -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 record: Add switch-output size warning 2017-01-11 16:48:02 -03:00
evlist.h perf record: Add switch-output size warning 2017-01-11 16:48:02 -03:00
evsel_fprintf.c perf script: Add option to stop printing callchain 2016-11-29 13:06:19 -03:00
evsel.c perf evsel: Allow to ignore missing pid 2016-12-15 16:25:46 -03:00
evsel.h perf evsel: Allow to ignore missing pid 2016-12-15 16:25:46 -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: 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 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 util: Add more debug message on failure path 2017-01-26 11:43:00 -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 perf tools: Move help_unknown_cmd() to its own file 2015-12-14 12:30:37 -03:00
hist.c perf tools: Propagate perf_config() errors 2017-01-27 12:23:33 -03:00
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 perf tools: Add Intel BTS support 2015-08-21 11:34:10 -03:00
intel-pt.c perf tools: Propagate perf_config() errors 2017-01-27 12:23:33 -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 perf kvm/powerpc: Port perf kvm stat to powerpc 2016-01-29 17:49:54 -03:00
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: Propagate perf_config() errors 2017-01-27 12:23:33 -03:00
llvm-utils.h perf llvm: Extract helpers in llvm-utils.c 2016-12-05 15:51:42 -03:00
lzma.c perf tools: Fix error handling of lzma decompression 2016-08-24 11:20:58 -03:00
machine.c perf machine: Add a kallsyms loading constructor 2017-01-11 16:48:00 -03:00
machine.h perf machine: Add a kallsyms loading constructor 2017-01-11 16:48:00 -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 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 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 tools: Fix build break on powerpc due to sample_reg_masks 2015-09-30 18:34:27 -03:00
perf-hooks-list.h perf tools: Introduce perf hooks 2016-11-29 12:13:27 -03:00
perf-hooks.c perf tools: Pass context to perf hook functions 2016-12-05 15:51:42 -03:00
perf-hooks.h perf tools: Pass context to perf hook functions 2016-12-05 15:51:42 -03:00
PERF-VERSION-GEN
pmu.c perf pmu: Factor out scale conversion code 2017-01-16 14:59:15 -03:00
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 New features: 2017-01-26 16:20:59 +01:00
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: Fix to probe on gcc generated functions in modules 2017-01-16 15:43:04 -03:00
probe-finder.h perf probe: Fix to probe on gcc generated functions in modules 2017-01-16 15:43:04 -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 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 evlist: Fix typo in deliver_sample() 2017-01-17 11:36:45 -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 perf tools: Fix python extension build 2016-02-29 11:18:25 -03:00
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 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 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 perf tools: Add file_only config option to strlist 2016-01-12 12:42:07 -03:00
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: Robustify reading of build-id from sysfs 2017-01-03 16:11:13 -03:00
symbol-minimal.c perf symbols: Remove symbol_filter_t machinery 2016-09-05 11:14:50 -03:00
symbol.c perf diff: Do not overwrite valid build id 2016-12-20 12:00:38 -03:00
symbol.h perf script: Add option to stop printing callchain 2016-11-29 13:06:19 -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 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: Add thread_map__remove function 2016-12-15 16:25:45 -03:00
thread_map.h perf thread_map: Add thread_map__remove function 2016-12-15 16:25:45 -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
time-utils.c perf tools: Move parse_nsec_time to time-utils.c 2016-12-01 13:02:39 -03:00
time-utils.h perf tools: Move parse_nsec_time to time-utils.c 2016-12-01 13:02:39 -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 perf util: Save pid-cmdline mapping into tracing header 2017-01-26 11:42:59 -03:00
trace-event-parse.c perf util: Save pid-cmdline mapping into tracing header 2017-01-26 11:42:59 -03:00
trace-event-read.c perf util: Add more debug message on failure path 2017-01-26 11:43:00 -03:00
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 util: Save pid-cmdline mapping into tracing header 2017-01-26 11:42:59 -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 unwind: Use addr_location::addr instead of ip for entries 2016-08-16 15:23:29 -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: Fix looking up dwarf unwind stack info 2017-01-18 12:29:52 -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-cxx.h perf clang: Update test case to use real BPF script 2016-12-05 15:51:44 -03:00
util.c perf tools: Add unit_number__scnprintf function 2017-01-11 16:48:01 -03:00
util.h perf tools: Add unit_number__scnprintf function 2017-01-11 16:48:01 -03:00
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 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