Ingo Molnar
0b73da3f40
perf_counter tools: Add 'perf annotate' feature
Add new perf sub-command to display annotated source code:
$ perf annotate decode_tree_entry
------------------------------------------------
Percent | Source code & Disassembly of /home/mingo/git/git
------------------------------------------------
:
: /home/mingo/git/git: file format elf64-x86-64
:
:
: Disassembly of section .text:
:
: 00000000004a0da0 <decode_tree_entry>:
: *modep = mode;
: return str;
: }
:
: static void decode_tree_entry(struct tree_desc *desc, const char *buf, unsigned long size)
: {
3.82 : 4a0da0: 41 54 push %r12
: const char *path;
: unsigned int mode, len;
:
: if (size < 24 || buf[size - 21])
0.17 : 4a0da2: 48 83 fa 17 cmp $0x17,%rdx
: *modep = mode;
: return str;
: }
:
: static void decode_tree_entry(struct tree_desc *desc, const char *buf, unsigned long size)
: {
0.00 : 4a0da6: 49 89 fc mov %rdi,%r12
0.00 : 4a0da9: 55 push %rbp
3.37 : 4a0daa: 53 push %rbx
: const char *path;
: unsigned int mode, len;
:
: if (size < 24 || buf[size - 21])
0.08 : 4a0dab: 76 73 jbe 4a0e20 <decode_tree_entry+0x80>
0.00 : 4a0dad: 80 7c 16 eb 00 cmpb $0x0,-0x15(%rsi,%rdx,1)
3.48 : 4a0db2: 75 6c jne 4a0e20 <decode_tree_entry+0x80>
: static const char *get_mode(const char *str, unsigned int *modep)
: {
: unsigned char c;
: unsigned int mode = 0;
:
: if (*str == ' ')
1.94 : 4a0db4: 0f b6 06 movzbl (%rsi),%eax
0.39 : 4a0db7: 3c 20 cmp $0x20,%al
0.00 : 4a0db9: 74 65 je 4a0e20 <decode_tree_entry+0x80>
: return NULL;
:
: while ((c = *str++) != ' ') {
0.06 : 4a0dbb: 89 c2 mov %eax,%edx
: if (c < '0' || c > '7')
1.99 : 4a0dbd: 31 ed xor %ebp,%ebp
: unsigned int mode = 0;
:
: if (*str == ' ')
: return NULL;
:
: while ((c = *str++) != ' ') {
1.74 : 4a0dbf: 48 8d 5e 01 lea 0x1(%rsi),%rbx
: if (c < '0' || c > '7')
0.00 : 4a0dc3: 8d 42 d0 lea -0x30(%rdx),%eax
0.17 : 4a0dc6: 3c 07 cmp $0x7,%al
0.00 : 4a0dc8: 76 0d jbe 4a0dd7 <decode_tree_entry+0x37>
0.00 : 4a0dca: eb 54 jmp 4a0e20 <decode_tree_entry+0x80>
0.00 : 4a0dcc: 0f 1f 40 00 nopl 0x0(%rax)
16.57 : 4a0dd0: 8d 42 d0 lea -0x30(%rdx),%eax
0.14 : 4a0dd3: 3c 07 cmp $0x7,%al
0.00 : 4a0dd5: 77 49 ja 4a0e20 <decode_tree_entry+0x80>
: return NULL;
: mode = (mode << 3) + (c - '0');
3.12 : 4a0dd7: 0f b6 c2 movzbl %dl,%eax
: unsigned int mode = 0;
:
: if (*str == ' ')
: return NULL;
:
: while ((c = *str++) != ' ') {
0.00 : 4a0dda: 0f b6 13 movzbl (%rbx),%edx
16.74 : 4a0ddd: 48 83 c3 01 add $0x1,%rbx
: if (c < '0' || c > '7')
: return NULL;
: mode = (mode << 3) + (c - '0');
The first column is the percentage of samples that arrived on that
particular line - relative to the total cost of the function.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-06 18:58:31 +02:00
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