perf annotate: Calculate the max instruction name, align column to that
authorArnaldo Carvalho de Melo <acme@redhat.com>
Wed, 6 Mar 2019 19:40:15 +0000 (16:40 -0300)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Wed, 6 Mar 2019 19:40:15 +0000 (16:40 -0300)
commitbc3bb795345891509b4a3cbff824cbef8c130f20
tree40518033ba2d24e050d0de7d07e4734b98ecf207
parenta53837a5458c5b84588dfa3fa510c6a29b7bd4d7
perf annotate: Calculate the max instruction name, align column to that

We were hardcoding '6' as the max instruction name, and we have lots
that are longer than that, see the diff from two 'P' printed TUI
annotations for a libc function that uses instructions with long names,
such as 'vpmovmskb' with its 9 chars:

  --- __strcmp_avx2.annotation.before 2019-03-06 16:31:39.368020425 -0300
  +++ __strcmp_avx2.annotation 2019-03-06 16:32:12.079450508 -0300
  @@ -2,284 +2,284 @@
   Event: cycles:ppp

   Percent        endbr64
  -  0.10         mov    %edi,%eax
  +  0.10         mov        %edi,%eax
  -               xor    %edx,%edx
  +               xor        %edx,%edx
  -  3.54         vpxor  %ymm7,%ymm7,%ymm7
  +  3.54         vpxor      %ymm7,%ymm7,%ymm7
  -               or     %esi,%eax
  +               or         %esi,%eax
  -               and    $0xfff,%eax
  +               and        $0xfff,%eax
  -               cmp    $0xf80,%eax
  +               cmp        $0xf80,%eax
  -             ↓ jg     370
  +             ↓ jg         370
  - 27.07         vmovdqu (%rdi),%ymm1
  + 27.07         vmovdqu    (%rdi),%ymm1
  -  7.97         vpcmpeqb (%rsi),%ymm1,%ymm0
  +  7.97         vpcmpeqb   (%rsi),%ymm1,%ymm0
  -  2.15         vpminub %ymm1,%ymm0,%ymm0
  +  2.15         vpminub    %ymm1,%ymm0,%ymm0
  -  4.09         vpcmpeqb %ymm7,%ymm0,%ymm0
  +  4.09         vpcmpeqb   %ymm7,%ymm0,%ymm0
  -  0.43         vpmovmskb %ymm0,%ecx
  +  0.43         vpmovmskb  %ymm0,%ecx
  -  1.53         test   %ecx,%ecx
  +  1.53         test       %ecx,%ecx
  -             ↓ je     b0
  +             ↓ je         b0
  -  5.26         tzcnt  %ecx,%edx
  +  5.26         tzcnt      %ecx,%edx
  - 18.40         movzbl (%rdi,%rdx,1),%eax
  + 18.40         movzbl     (%rdi,%rdx,1),%eax
  -  7.09         movzbl (%rsi,%rdx,1),%edx
  +  7.09         movzbl     (%rsi,%rdx,1),%edx
  -  3.34         sub    %edx,%eax
  +  3.34         sub        %edx,%eax
     2.37         vzeroupper
                ← retq
                  nop
  -         50:   tzcnt  %ecx,%edx
  +         50:   tzcnt      %ecx,%edx
  -               movzbl 0x20(%rdi,%rdx,1),%eax
  +               movzbl     0x20(%rdi,%rdx,1),%eax
  -               movzbl 0x20(%rsi,%rdx,1),%edx
  +               movzbl     0x20(%rsi,%rdx,1),%edx
  -               sub    %edx,%eax
  +               sub        %edx,%eax
                  vzeroupper
                ← retq
  -               data16 nopw %cs:0x0(%rax,%rax,1)
  +               data16     nopw %cs:0x0(%rax,%rax,1)

Reported-by: Travis Downs <travis.downs@gmail.com>
LPU-Reference: CAOBGo4z1KfmWeOm6Et0cnX5Z6DWsG2PQbAvRn1MhVPJmXHrc5g@mail.gmail.com
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-89wsdd9h9g6bvq52sgp6d0u4@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/arch/arm64/annotate/instructions.c
tools/perf/arch/s390/annotate/instructions.c
tools/perf/util/annotate.c
tools/perf/util/annotate.h