perf annotate: Make perf config effective

perf annotate: Make perf config effective

perf default config set by user in [annotate] section is totally ignored
by annotate code. Fix it.

Before:

  $ ./perf config
  annotate.hide_src_code=true
  annotate.show_nr_jumps=true
  annotate.show_nr_samples=true

  $ ./perf annotate shash
         │    unsigned h = 0;
         │      movl   $0x0,-0xc(%rbp)
         │    while (*s)
         │    ↓ jmp    44
         │    h = 65599 * h + *s++;
   11.33 │24:   mov    -0xc(%rbp),%eax
   43.50 │      imul   $0x1003f,%eax,%ecx
         │      mov    -0x18(%rbp),%rax

After:

         │        movl   $0x0,-0xc(%rbp)
         │      ↓ jmp    44
       1 │1 24:   mov    -0xc(%rbp),%eax
       4 │        imul   $0x1003f,%eax,%ecx
         │        mov    -0x18(%rbp),%rax

Note that we have removed show_nr_samples and show_total_period from
annotation_options because they are not used. Instead of them we use
symbol_conf.show_nr_samples and symbol_conf.show_total_period.

Committer testing:

Using 'perf annotate --stdio2' to use the TUI rendering but emitting the output to stdio:

  # perf config
  #
  # perf config annotate.hide_src_code=true
  # perf config
  annotate.hide_src_code=true
  #
  # perf config annotate.show_nr_jumps=true
  # perf config annotate.show_nr_samples=true
  # perf config
  annotate.hide_src_code=true
  annotate.show_nr_jumps=true
  annotate.show_nr_samples=true
  #
  #

Before:

  # perf annotate --stdio2 ObjectInstance::weak_pointer_was_finalized
  Samples: 1  of event 'cycles', 4000 Hz, Event count (approx.): 830873, [percent: local period]
  ObjectInstance::weak_pointer_was_finalized() /usr/lib64/libgjs.so.0.0.0
  Percent
              00000000000609f0 <ObjectInstance::weak_pointer_was_finalized()@@Base>:
                endbr64
                cmpq    $0x0,0x20(%rdi)
              ↓ je      10
                xor     %eax,%eax
              ← retq
                xchg    %ax,%ax
  100.00  10:   push    %rbp
                cmpq    $0x0,0x18(%rdi)
                mov     %rdi,%rbp
              ↓ jne     20
          1b:   xor     %eax,%eax
                pop     %rbp
              ← retq
                nop
          20:   lea     0x18(%rdi),%rdi
              → callq   JS_UpdateWeakPointerAfterGC(JS::Heap<JSObject*
                cmpq    $0x0,0x18(%rbp)
              ↑ jne     1b
                mov     %rbp,%rdi
              → callq   ObjectBase::jsobj_addr() const@plt
                mov     $0x1,%eax
                pop     %rbp
              ← retq
  #

After:

  # perf annotate --stdio2 ObjectInstance::weak_pointer_was_finalized 2> /dev/null
  Samples: 1  of event 'cycles', 4000 Hz, Event count (approx.): 830873, [percent: local period]
  ObjectInstance::weak_pointer_was_finalized() /usr/lib64/libgjs.so.0.0.0
  Samples       endbr64
                cmpq    $0x0,0x20(%rdi)
              ↓ je      10
                xor     %eax,%eax
              ← retq
                xchg    %ax,%ax
     1  1 10:   push    %rbp
                cmpq    $0x0,0x18(%rdi)
                mov     %rdi,%rbp
              ↓ jne     20
        1 1b:   xor     %eax,%eax
                pop     %rbp
              ← retq
                nop
        1 20:   lea     0x18(%rdi),%rdi
              → callq   JS_UpdateWeakPointerAfterGC(JS::Heap<JSObject*
                cmpq    $0x0,0x18(%rbp)
              ↑ jne     1b
                mov     %rbp,%rdi
              → callq   ObjectBase::jsobj_addr() const@plt
                mov     $0x1,%eax
                pop     %rbp
              ← retq
  #
  # perf config annotate.show_nr_jumps
  annotate.show_nr_jumps=true
  # perf config annotate.show_nr_jumps=false
  # perf config annotate.show_nr_jumps
  annotate.show_nr_jumps=false
  #
  # perf annotate --stdio2 ObjectInstance::weak_pointer_was_finalized 2> /dev/null
  Samples: 1  of event 'cycles', 4000 Hz, Event count (approx.): 830873, [percent: local period]
  ObjectInstance::weak_pointer_was_finalized() /usr/lib64/libgjs.so.0.0.0
  Samples       endbr64
                cmpq    $0x0,0x20(%rdi)
              ↓ je      10
                xor     %eax,%eax
              ← retq
                xchg    %ax,%ax
       1  10:   push    %rbp
                cmpq    $0x0,0x18(%rdi)
                mov     %rdi,%rbp
              ↓ jne     20
          1b:   xor     %eax,%eax
                pop     %rbp
              ← retq
                nop
          20:   lea     0x18(%rdi),%rdi
              → callq   JS_UpdateWeakPointerAfterGC(JS::Heap<JSObject*
                cmpq    $0x0,0x18(%rbp)
              ↑ jne     1b
                mov     %rbp,%rdi
              → callq   ObjectBase::jsobj_addr() const@plt
                mov     $0x1,%eax
                pop     %rbp
              ← retq
  #

Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Changbin Du <changbin.du@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Taeung Song <treeze.taeung@gmail.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Yisheng Xie <xieyisheng1@huawei.com>
Link: http://lore.kernel.org/lkml/20200213064306.160480-6-ravi.bangoria@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>