Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH v5 9/9] perf, tools, script: Support total cycles count | Date | Tue, 18 Sep 2018 05:32:14 -0700 |
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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> --- tools/perf/builtin-script.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 3b73c3226141..84895c861b84 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 +1029,9 @@ 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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