Em Wed, Dec 05, 2018 at 01:28:38PM +0100, Jiri Olsa escreveu:
> On Mon, Dec 03, 2018 at 04:18:48PM -0800, Andi Kleen wrote:
> > From: Andi Kleen <a...@linux.intel.com>
> >
> > When looking at PT or brstackinsn traces with perf script
> > it can be very useful to see the source code. This adds a simple
> > facility to print them with perf script, if the information
> > is available through dwarf
> >
> > % perf record ...
> > % perf script -F insn,ip,sym,srccode
> > ...
> >
> > 4004c6 main
> > 5 for (i = 0; i < 10000000; i++)
> > 4004cd main
> > 5 for (i = 0; i < 10000000; i++)
> > 4004c6 main
> > 5 for (i = 0; i < 10000000; i++)
> > 4004cd main
> > 5 for (i = 0; i < 10000000; i++)
> > 4004cd main
> > 5 for (i = 0; i < 10000000; i++)
> > 4004cd main
> > 5 for (i = 0; i < 10000000; i++)
> > 4004cd main
> > 5 for (i = 0; i < 10000000; i++)
> > 4004cd main
> > 5 for (i = 0; i < 10000000; i++)
> > 4004b3 main
> > 6 v++;
> >
> > % perf record -b ...
> > % perf script -F insn,ip,sym,srccode,brstackinsn
> >
> > ...
> > main+22:
> > 0000000000400543 insn: e8 ca ff ff ff # PRED
> > |18 f1();
> > f1:
> > 0000000000400512 insn: 55
> > |10 {
> > 0000000000400513 insn: 48 89 e5
> > 0000000000400516 insn: b8 00 00 00 00
> > |11 f2();
> > 000000000040051b insn: e8 d6 ff ff ff # PRED
> > f2:
> > 00000000004004f6 insn: 55
> > |5 {
> > 00000000004004f7 insn: 48 89 e5
> > 00000000004004fa insn: 8b 05 2c 0b 20 00
> > |6 c = a / b;
> > 0000000000400500 insn: 8b 0d 2a 0b 20 00
> > 0000000000400506 insn: 99
> > 0000000000400507 insn: f7 f9
> > 0000000000400509 insn: 89 05 29 0b 20 00
> > 000000000040050f insn: 90
> > |7 }
> > 0000000000400510 insn: 5d
> > 0000000000400511 insn: c3 # PRED
> > f1+14:
> > 0000000000400520 insn: b8 00 00 00 00
> > |12 f2();
> > 0000000000400525 insn: e8 cc ff ff ff # PRED
> > f2:
> > 00000000004004f6 insn: 55
> > |5 {
> > 00000000004004f7 insn: 48 89 e5
> > 00000000004004fa insn: 8b 05 2c 0b 20 00
> > |6 c = a / b;
> >
> > Not supported for callchains currently, would need some
> > layout changes there.
>
> nice, works nicely, especialy with --xed
The above seems to imply you actually tested it, was that the case? Can
you please provide me the exact 'perf record' line you used, that is
lacking in Andi's original commit log message?
- Arnaldo
> Acked-by: Jiri Olsa <jo...@kernel.org>
