Em Thu, Feb 21, 2019 at 12:05:59PM +0100, Jiri Olsa escreveu:
> On Thu, Feb 21, 2019 at 05:57:16PM +0800, Wei Li wrote:
>
> SNIP
>
> > liwei@euler:~/main_code/hulk_work/hulk/tools/perf$ sudo ./perf record
> > ./common_while_1
> > [ perf record: Woken up 2 times to write data ]
> > [ perf record: Captured and wrote 0.488 MB perf.data (12500 samples) ]
> > liwei@euler:~/main_code/hulk_work/hulk/tools/perf$ sudo ./perf annotate -l
> > -s hotspot_1 --stdio
> >
> > Sorted summary for file
> > /home/liwei/main_code/hulk_work/hulk/tools/perf/common_while_1
> > ----------------------------------------------
> >
> > 33.34 common_while_1.c:5
> > 33.34 common_while_1.c:6
> > 33.32 common_while_1.c:7
> > Percent | Source code & Disassembly of common_while_1 for cycles:ppp
> > (12482 samples, percent: local period)
> > -----------------------------------------------------------------------------------------------------------------
> > :
> > :
> > :
> > : Disassembly of section .text:
> > :
> > : 00000000000005fa <hotspot_1>:
> > : hotspot_1():
> > : void hotspot_1(void)
> > : {
> > 0.00 : 5fa: push %rbp
> > 0.00 : 5fb: mov %rsp,%rbp
> > : volatile int i;
> > :
> > : for (i = 0; i < 0x10000000; i++);
> > 0.00 : 5fe: movl $0x0,-0x4(%rbp)
> > 0.00 : 605: jmp 610 <hotspot_1+0x16>
> > 0.00 : 607: mov -0x4(%rbp),%eax
> > common_while_1.c:5 4.70 : 60a: add $0x1,%eax
> > 4.89 : 60d: mov %eax,-0x4(%rbp)
> > common_while_1.c:5 19.03 : 610: mov -0x4(%rbp),%eax
> > common_while_1.c:5 4.72 : 613: cmp $0xfffffff,%eax
> > 0.00 : 618: jle 607 <hotspot_1+0xd>
> > : for (i = 0; i < 0x10000000; i++);
> > 0.00 : 61a: movl $0x0,-0x4(%rbp)
> > 0.00 : 621: jmp 62c <hotspot_1+0x32>
> > 0.00 : 623: mov -0x4(%rbp),%eax
> > common_while_1.c:6 4.54 : 626: add $0x1,%eax
> > 4.73 : 629: mov %eax,-0x4(%rbp)
> > common_while_1.c:6 19.54 : 62c: mov -0x4(%rbp),%eax
> > common_while_1.c:6 4.54 : 62f: cmp $0xfffffff,%eax
> > ...
> >
> > Fixes: 425859ff0de33 ("perf annotate: No need to calculate notes->start
> > twice")
>
> Acked-by: Jiri Olsa <[email protected]>
Tested and applied.
Thanks for the Fixes: tag!
- Arnaldo
