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perf annotate browser: Add visual cues on jump lines

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Using up/down arrows just before the instruction, replacing the actual chars
with approximations to avoid mail encoding snafus:

avtab_search_node
    0.00 |      push   %rbp
    0.00 |      mov    %rsp,%rbp
    0.00 |      callq  mcount
    0.00 |      movzwl 0x6(%rsi),%edx
    0.00 |      and    $0x7fff,%dx
    0.00 |      test   %rdi,%rdi
    0.00 |    v jne    20
    0.00 | 17:  xor    %eax,%eax
    0.00 | 19:  leaveq
    0.00 |      retq
    0.00 |      nopl   0x0(%rax,%rax,1)
    0.00 | 20:  mov    (%rdi),%rax
    0.00 |      test   %rax,%rax
    0.00 |    ^ je     17
    0.00 |      movzwl (%rsi),%ecx
    0.00 |      movzwl 0x2(%rsi),%r9d
    0.00 |      movzwl 0x4(%rsi),%r8d
    0.00 |      movzwl %cx,%esi
    0.00 |      movzwl %r9w,%r10d
    0.00 |      shl    $0x9,%esi
    0.00 |      lea    (%rsi,%r10,4),%esi
    0.00 |      lea    (%r8,%rsi,1),%esi
    0.00 |      and    0x10(%rdi),%si
    0.00 |      movzwl %si,%esi
    0.00 |      mov    (%rax,%rsi,8),%rax
    0.00 |      test   %rax,%rax
    0.00 |    ^ je     19
    0.00 |      nopw   0x0(%rax,%rax,1)
    0.00 | 60:  cmp    %cx,(%rax)
    0.00 |    v jne    7e
    0.00 |      cmp    %r9w,0x2(%rax)
    0.00 |    v jne    7e
    0.00 |      cmp    %r8w,0x4(%rax)
    0.00 |    v jne    79
    0.00 |      test   %dx,0x6(%rax)
    0.00 |    ^ jne    19
    0.00 | 79:  cmp    %r8w,0x4(%rax)
   93.04 | 7e:^ ja     17
    2.53 |      mov    0x10(%rax),%rax
    4.43 |      test   %rax,%rax
    0.00 |    ^ jne    60
    0.00 |      leaveq
    0.00 |      retq

Next low hanging fruit is to use left arrow for retqs, then work on clearling
marking loops.

Requested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-hkx848wdbs6n7bcp3ymr9yus@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2012-04-20 15:40:20 -03:00
parent d223288556
commit 51a0d455b5
1 changed files with 12 additions and 1 deletions
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13
tools/perf/ui/browsers/annotate.c
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@ -113,9 +113,20 @@ static void annotate_browser__write(struct ui_browser *self, void *entry, int ro
if (change_color)
ui_browser__set_color(self, color);
if (dl->ins && dl->ins->ops->scnprintf) {
if (ins__is_jump(dl->ins)) {
bool fwd = dl->ops.target > (u64)dl->offset;
SLsmg_set_char_set(1);
SLsmg_write_char(fwd ? SLSMG_DARROW_CHAR :
SLSMG_UARROW_CHAR);
SLsmg_set_char_set(0);
SLsmg_write_char(' ');
} else {
slsmg_write_nstring(" ", 2);
}
dl->ins->ops->scnprintf(dl->ins, bf, sizeof(bf), &dl->ops,
!ab->use_offset);
slsmg_write_nstring(" ", 2);
printed += 2;
} else
scnprintf(bf, sizeof(bf), " %-6.6s %s", dl->name, dl->ops.raw);