diff options
-rw-r--r-- | tools/perf/Documentation/perf-script.txt | 8 | ||||
-rw-r--r-- | tools/perf/builtin-script.c | 44 |
2 files changed, 38 insertions, 14 deletions
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt index afd4718475c9..2012a8e6c90b 100644 --- a/tools/perf/Documentation/perf-script.txt +++ b/tools/perf/Documentation/perf-script.txt @@ -129,8 +129,8 @@ OPTIONS Comma separated list of fields to print. Options are: comm, tid, pid, time, cpu, event, trace, ip, sym, dso, addr, symoff, srcline, period, iregs, uregs, brstack, brstacksym, flags, bpf-output, - brstackinsn, brstackoff, callindent, insn, insnlen, synth, phys_addr, - metric, misc, srccode, ipc, data_page_size, code_page_size, ins_lat. + brstackinsn, brstackinsnlen, brstackoff, callindent, insn, insnlen, synth, + phys_addr, metric, misc, srccode, ipc, data_page_size, code_page_size, ins_lat. Field list can be prepended with the type, trace, sw or hw, to indicate to which event type the field list applies. e.g., -F sw:comm,tid,time,ip,sym and -F trace:time,cpu,trace @@ -241,6 +241,10 @@ OPTIONS is printed. This is the full execution path leading to the sample. This is only supported when the sample was recorded with perf record -b or -j any. + Use brstackinsnlen to print the brstackinsn lenght. For example, you + can’t know the next sequential instruction after an unconditional branch unless + you calculate that based on its length. + The brstackoff field will print an offset into a specific dso/binary. With the metric option perf script can compute metrics for diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 88c52d49852c..f12dc5ed354d 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -124,6 +124,7 @@ enum perf_output_field { PERF_OUTPUT_DATA_PAGE_SIZE = 1ULL << 33, PERF_OUTPUT_CODE_PAGE_SIZE = 1ULL << 34, PERF_OUTPUT_INS_LAT = 1ULL << 35, + PERF_OUTPUT_BRSTACKINSNLEN = 1ULL << 36, }; struct perf_script { @@ -191,6 +192,7 @@ struct output_option { {.str = "data_page_size", .field = PERF_OUTPUT_DATA_PAGE_SIZE}, {.str = "code_page_size", .field = PERF_OUTPUT_CODE_PAGE_SIZE}, {.str = "ins_lat", .field = PERF_OUTPUT_INS_LAT}, + {.str = "brstackinsnlen", .field = PERF_OUTPUT_BRSTACKINSNLEN}, }; enum { @@ -488,7 +490,7 @@ static int evsel__check_attr(struct evsel *evsel, struct perf_session *session) "selected. Hence, no address to lookup the source line number.\n"); return -EINVAL; } - if (PRINT_FIELD(BRSTACKINSN) && !allow_user_set && + if ((PRINT_FIELD(BRSTACKINSN) || PRINT_FIELD(BRSTACKINSNLEN)) && !allow_user_set && !(evlist__combined_branch_type(session->evlist) & PERF_SAMPLE_BRANCH_ANY)) { pr_err("Display of branch stack assembler requested, but non all-branch filter set\n" "Hint: run 'perf record -b ...'\n"); @@ -1120,10 +1122,17 @@ static int print_srccode(struct thread *thread, u8 cpumode, uint64_t addr) 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 *total_cycles) + int insn, FILE *fp, int *total_cycles, + struct perf_event_attr *attr) { - int printed = fprintf(fp, "\t%016" PRIx64 "\t%-30s\t#%s%s%s%s", ip, - dump_insn(x, ip, inbuf, len, NULL), + int ilen = 0; + int printed = fprintf(fp, "\t%016" PRIx64 "\t%-30s\t", ip, + dump_insn(x, ip, inbuf, len, &ilen)); + + if (PRINT_FIELD(BRSTACKINSNLEN)) + printed += fprintf(fp, "ilen: %d\t", ilen); + + printed += fprintf(fp, "#%s%s%s%s", en->flags.predicted ? " PRED" : "", en->flags.mispred ? " MISPRED" : "", en->flags.in_tx ? " INTX" : "", @@ -1209,7 +1218,8 @@ static int perf_sample__fprintf_brstackinsn(struct perf_sample *sample, printed += ip__fprintf_sym(entries[nr - 1].from, thread, x.cpumode, x.cpu, &lastsym, attr, fp); printed += ip__fprintf_jump(entries[nr - 1].from, &entries[nr - 1], - &x, buffer, len, 0, fp, &total_cycles); + &x, buffer, len, 0, fp, &total_cycles, + attr); if (PRINT_FIELD(SRCCODE)) printed += print_srccode(thread, x.cpumode, entries[nr - 1].from); } @@ -1240,14 +1250,17 @@ 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, &entries[i], &x, buffer + off, len - off, ++insn, fp, - &total_cycles); + &total_cycles, attr); if (PRINT_FIELD(SRCCODE)) printed += print_srccode(thread, x.cpumode, ip); break; } else { ilen = 0; - printed += fprintf(fp, "\t%016" PRIx64 "\t%s\n", ip, + printed += fprintf(fp, "\t%016" PRIx64 "\t%s", ip, dump_insn(&x, ip, buffer + off, len - off, &ilen)); + if (PRINT_FIELD(BRSTACKINSNLEN)) + printed += fprintf(fp, "\tilen: %d", ilen); + printed += fprintf(fp, "\n"); if (ilen == 0) break; if (PRINT_FIELD(SRCCODE)) @@ -1290,16 +1303,23 @@ static int perf_sample__fprintf_brstackinsn(struct perf_sample *sample, machine, thread, &x.is64bit, &x.cpumode, false); if (len <= 0) goto out; - printed += fprintf(fp, "\t%016" PRIx64 "\t%s\n", sample->ip, - dump_insn(&x, sample->ip, buffer, len, NULL)); + ilen = 0; + printed += fprintf(fp, "\t%016" PRIx64 "\t%s", sample->ip, + dump_insn(&x, sample->ip, buffer, len, &ilen)); + if (PRINT_FIELD(BRSTACKINSNLEN)) + printed += fprintf(fp, "\tilen: %d", ilen); + printed += fprintf(fp, "\n"); if (PRINT_FIELD(SRCCODE)) print_srccode(thread, x.cpumode, sample->ip); goto out; } for (off = 0; off <= end - start; off += ilen) { ilen = 0; - printed += fprintf(fp, "\t%016" PRIx64 "\t%s\n", start + off, + printed += fprintf(fp, "\t%016" PRIx64 "\t%s", start + off, dump_insn(&x, start + off, buffer + off, len - off, &ilen)); + if (PRINT_FIELD(BRSTACKINSNLEN)) + printed += fprintf(fp, "\tilen: %d", ilen); + printed += fprintf(fp, "\n"); if (ilen == 0) break; if (arch_is_branch(buffer + off, len - off, x.is64bit) && start + off != sample->ip) { @@ -1457,7 +1477,7 @@ static int perf_sample__fprintf_insn(struct perf_sample *sample, for (i = 0; i < sample->insn_len; i++) printed += fprintf(fp, " %02x", (unsigned char)sample->insn[i]); } - if (PRINT_FIELD(BRSTACKINSN)) + if (PRINT_FIELD(BRSTACKINSN) || PRINT_FIELD(BRSTACKINSNLEN)) printed += perf_sample__fprintf_brstackinsn(sample, thread, attr, machine, fp); return printed; @@ -3776,7 +3796,7 @@ int cmd_script(int argc, const char **argv) "Valid types: hw,sw,trace,raw,synth. " "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso," "addr,symoff,srcline,period,iregs,uregs,brstack," - "brstacksym,flags,bpf-output,brstackinsn,brstackoff," + "brstacksym,flags,bpf-output,brstackinsn,brstackinsnlen,brstackoff," "callindent,insn,insnlen,synth,phys_addr,metric,misc,ipc,tod," "data_page_size,code_page_size,ins_lat", parse_output_fields), |