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Subject[PATCH v6 5/5] perf, tools, script: Support total cycles count
Date
From: Andi Kleen <ak@linux.intel.com>

For perf script brstackinsn also print a running cycles count.
This makes it easier to calculate cycle deltas for code sections
measured with LBRs.

% perf record -b -a sleep 1
% perf script -F +brstackinsn
...
_dl_sysdep_start+330:
00007eff9f20583a insn: 75 c4 # PRED 24 cycles [24]
00007eff9f205800 insn: 48 83 e8 03
00007eff9f205804 insn: 48 83 f8 1e
00007eff9f205808 insn: 77 26
00007eff9f20580a insn: 48 63 04 81
00007eff9f20580e insn: 48 01 c8
00007eff9f205811 insn: ff e0 # MISPRED 31 cycles [7] 0.71 IPC
00007eff9f2059c0 insn: 44 8b 62 08
00007eff9f2059c4 insn: e9 67 fe ff ff # PRED 55 cycles [24] 0.04 IPC
00007eff9f205830 insn: 48 83 c2 10
00007eff9f205834 insn: 48 8b 02
00007eff9f205837 insn: 48 85 c0
00007eff9f20583a insn: 75 c4 # PRED 68 cycles [13] 0.23 IPC

Signed-off-by: Andi Kleen <ak@linux.intel.com>

---

v2: reflow line
---
tools/perf/builtin-script.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 6232658c6f31..53dc27e63d98 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -913,7 +913,7 @@ static int grab_bb(u8 *buffer, u64 start, u64 end,

static int ip__fprintf_jump(uint64_t ip, struct branch_entry *en,
struct perf_insn *x, u8 *inbuf, int len,
- int insn, FILE *fp)
+ int insn, FILE *fp, int *total_cycles)
{
int printed = fprintf(fp, "\t%016" PRIx64 "\t%-30s\t#%s%s%s%s", ip,
dump_insn(x, ip, inbuf, len, NULL),
@@ -922,7 +922,8 @@ static int ip__fprintf_jump(uint64_t ip, struct branch_entry *en,
en->flags.in_tx ? " INTX" : "",
en->flags.abort ? " ABORT" : "");
if (en->flags.cycles) {
- printed += fprintf(fp, " %d cycles", en->flags.cycles);
+ *total_cycles += en->flags.cycles;
+ printed += fprintf(fp, " %d cycles [%d]", *total_cycles, en->flags.cycles);
if (insn)
printed += fprintf(fp, " %.2f IPC", (float)insn / en->flags.cycles);
}
@@ -979,6 +980,7 @@ static int perf_sample__fprintf_brstackinsn(struct perf_sample *sample,
u8 buffer[MAXBB];
unsigned off;
struct symbol *lastsym = NULL;
+ int total_cycles = 0;

if (!(br && br->nr))
return 0;
@@ -999,7 +1001,7 @@ static int perf_sample__fprintf_brstackinsn(struct perf_sample *sample,
printed += ip__fprintf_sym(br->entries[nr - 1].from, thread,
x.cpumode, x.cpu, &lastsym, attr, fp);
printed += ip__fprintf_jump(br->entries[nr - 1].from, &br->entries[nr - 1],
- &x, buffer, len, 0, fp);
+ &x, buffer, len, 0, fp, &total_cycles);
}

/* Print all blocks */
@@ -1027,7 +1029,8 @@ static int perf_sample__fprintf_brstackinsn(struct perf_sample *sample,

printed += ip__fprintf_sym(ip, thread, x.cpumode, x.cpu, &lastsym, attr, fp);
if (ip == end) {
- printed += ip__fprintf_jump(ip, &br->entries[i], &x, buffer + off, len - off, insn, fp);
+ printed += ip__fprintf_jump(ip, &br->entries[i], &x, buffer + off, len - off, insn, fp,
+ &total_cycles);
break;
} else {
printed += fprintf(fp, "\t%016" PRIx64 "\t%s\n", ip,
--
2.17.1
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