From 51a0d455b5f44cb4680e0a89f99860b669e40d0f Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Fri, 20 Apr 2012 15:40:20 -0300 Subject: [PATCH] perf annotate browser: Add visual cues on jump lines 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 Cc: David Ahern Cc: Frederic Weisbecker Cc: Linus Torvalds Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-hkx848wdbs6n7bcp3ymr9yus@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/annotate.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c index c2bbfc7..63206ca 100644 --- a/tools/perf/ui/browsers/annotate.c +++ b/tools/perf/ui/browsers/annotate.c @@ -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); -- 2.7.4