perf tools changes and fixes for v6.5: 1st batch

Internal cleanup:

 - Refactor PMU data management to handle hybrid systems in a generic way.
   Do more work in the lexer so that legacy event types parse more easily.
   A side-effect of this is that if a PMU is specified, scanning sysfs is
   avoided improving start-up time.

 - Fix hybrid metrics, for example, the TopdownL1 works for both performance
   and efficiency cores on Intel machines.  To support this, sort and regroup
   events after parsing.

 - Add reference count checking for the 'thread' data structure.

 - Lots of fixes for memory leaks in various places thanks to the ASAN and
   Ian's refcount checker.

 - Reduce the binary size by replacing static variables with local or
   dynamically allocated memory.

 - Introduce shared_mutex for annotate data to reduce memory footprint.

 - Make filesystem access library functions more thread safe.

Test:

 - Organize cpu_map tests into a single suite.

 - Add metric value validation test to check if the values are within correct
   value ranges.

 - Add perf stat stdio output test to check if event and metric names match.

 - Add perf data converter JSON output test.

 - Fix a lot of issues reported by shellcheck(1).  This is a preparation to
   enable shellcheck by default.

 - Make the large x86 new instructions test optional at build time using
   EXTRA_TESTS=1.

 - Add a test for libpfm4 events.

perf script:

 - Add 'dsoff' outpuf field to display offset from the DSO.

    $ perf script -F comm,pid,event,ip,dsoff
       ls 2695501 cycles:      152cc73ef4b5 (/usr/lib/x86_64-linux-gnu/ld-2.31.so+0x1c4b5)
       ls 2695501 cycles:  ffffffff99045b3e ([kernel.kallsyms])
       ls 2695501 cycles:  ffffffff9968e107 ([kernel.kallsyms])
       ls 2695501 cycles:  ffffffffc1f54afb ([kernel.kallsyms])
       ls 2695501 cycles:  ffffffff9968382f ([kernel.kallsyms])
       ls 2695501 cycles:  ffffffff99e00094 ([kernel.kallsyms])
       ls 2695501 cycles:      152cc718a8d0 (/usr/lib/x86_64-linux-gnu/libselinux.so.1+0x68d0)
       ls 2695501 cycles:  ffffffff992a6db0 ([kernel.kallsyms])

 - Adjust width for large PID/TID values.

perf report:

 - Robustify reading addr2line output for srcline by checking sentinel output
   before the actual data and by using timeout of 1 second.

 - Allow config terms (like 'name=ABC') with breakpoint events.

    $ perf record -e mem:0x55feb98dd169:x/name=breakpoint/ -p 19646 -- sleep 1

perf annotate:

 - Handle x86 instruction suffix like 'l' in 'movl' generally.

 - Parse instruction operands properly even with a whitespace.  This is needed
   for llvm-objdump output.

 - Support RISC-V binutils lookup using the triplet prefixes.

 - Add '<' and '>' key to navigate to prev/next symbols in TUI.

 - Fix instruction association and parsing for LoongArch.

perf stat:

 - Add --per-cache aggregation option, optionally specify a cache level
   like `--per-cache=L2`.

    $ sudo perf stat --per-cache -a -e ls_dmnd_fills_from_sys.ext_cache_remote --\
      taskset -c 0-15,64-79,128-143,192-207\
      perf bench sched messaging -p -t -l 100000 -g 8

      # Running 'sched/messaging' benchmark:
      # 20 sender and receiver threads per group
      # 8 groups == 320 threads run

      Total time: 7.648 [sec]

      Performance counter stats for 'system wide':

      S0-D0-L3-ID0             16         17,145,912      ls_dmnd_fills_from_sys.ext_cache_remote
      S0-D0-L3-ID8             16         14,977,628      ls_dmnd_fills_from_sys.ext_cache_remote
      S0-D0-L3-ID16            16            262,539      ls_dmnd_fills_from_sys.ext_cache_remote
      S0-D0-L3-ID24            16              3,140      ls_dmnd_fills_from_sys.ext_cache_remote
      S0-D0-L3-ID32            16             27,403      ls_dmnd_fills_from_sys.ext_cache_remote
      S0-D0-L3-ID40            16             17,026      ls_dmnd_fills_from_sys.ext_cache_remote
      S0-D0-L3-ID48            16              7,292      ls_dmnd_fills_from_sys.ext_cache_remote
      S0-D0-L3-ID56            16              2,464      ls_dmnd_fills_from_sys.ext_cache_remote
      S1-D1-L3-ID64            16         22,489,306      ls_dmnd_fills_from_sys.ext_cache_remote
      S1-D1-L3-ID72            16         21,455,257      ls_dmnd_fills_from_sys.ext_cache_remote
      S1-D1-L3-ID80            16             11,619      ls_dmnd_fills_from_sys.ext_cache_remote
      S1-D1-L3-ID88            16             30,978      ls_dmnd_fills_from_sys.ext_cache_remote
      S1-D1-L3-ID96            16             37,628      ls_dmnd_fills_from_sys.ext_cache_remote
      S1-D1-L3-ID104           16             13,594      ls_dmnd_fills_from_sys.ext_cache_remote
      S1-D1-L3-ID112           16             10,164      ls_dmnd_fills_from_sys.ext_cache_remote
      S1-D1-L3-ID120           16             11,259      ls_dmnd_fills_from_sys.ext_cache_remote

            7.779171484 seconds time elapsed

  - Change default (no event/metric) formatting for default metrics so that
    events are hidden and the metric and group appear.

     Performance counter stats for 'ls /':

                  1.85 msec task-clock                       #    0.594 CPUs utilized
                     0      context-switches                 #    0.000 /sec
                     0      cpu-migrations                   #    0.000 /sec
                    97      page-faults                      #   52.517 K/sec
             2,187,173      cycles                           #    1.184 GHz
             2,474,459      instructions                     #    1.13  insn per cycle
               531,584      branches                         #  287.805 M/sec
                13,626      branch-misses                    #    2.56% of all branches
                            TopdownL1                 #     23.5 %  tma_backend_bound
                                                      #     11.5 %  tma_bad_speculation
                                                      #     39.1 %  tma_frontend_bound
                                                      #     25.9 %  tma_retiring

 - Allow --cputype option to have any PMU name (not just hybrid).

 - Fix output value not to added when it runs multiple times with -r option.

perf list:

 - Show metricgroup description from JSON file called metricgroups.json.

 - Allow 'pfm' argument to list only libpfm4 events and check each event is
   supported before showing it.

JSON vendor events:

 - Avoid event grouping using "NO_GROUP_EVENTS" constraints.  The topdown
   events are correctly grouped even if no group exists.

 - Add "Default" metric group to print it in the default output.  And use
   "DefaultMetricgroupName" to indicate the real metric group name.

 - Add AmpereOne core PMU events.

Misc:

 - Define man page date correctly.

 - Track exception level properly on ARM CoreSight ETM.

 - Allow anonymous struct, union or enum when retrieving type names from DWARF.

 - Fix incorrect filename when calling `perf inject --jit`.

 - Handle PLT size correctly on LoongArch.
-----BEGIN PGP SIGNATURE-----

iHUEABYIAB0WIQSo2x5BnqMqsoHtzsmMstVUGiXMgwUCZJxT3gAKCRCMstVUGiXM
g3//AQDyH3tbAVxU6JkvEOjjDvK7MWeXef7GQh8MP8D9Wkxk1AD9HgyxZWXn+mer
wxzBMntnxlr9+mkBerrVwUzYMd/IJQk=
=hPh8
-----END PGP SIGNATURE-----