perf: script: add raw|disasm arguments to --insn-trace option

Now '--insn-trace' accept a argument to specify the output format:
  - raw: display raw instructions.
  - disasm: display mnemonic instructions (if capstone is installed).

$ sudo perf script --insn-trace=raw
              ls 1443864 [006] 2275506.209908875:      7f216b426100 _start+0x0 (/usr/lib/x86_64-linux-gnu/ld-2.31.so) insn: 48 89 e7
              ls 1443864 [006] 2275506.209908875:      7f216b426103 _start+0x3 (/usr/lib/x86_64-linux-gnu/ld-2.31.so) insn: e8 e8 0c 00 00
              ls 1443864 [006] 2275506.209908875:      7f216b426df0 _dl_start+0x0 (/usr/lib/x86_64-linux-gnu/ld-2.31.so) insn: f3 0f 1e fa

$ sudo perf script --insn-trace=disasm
              ls 1443864 [006] 2275506.209908875:      7f216b426100 _start+0x0 (/usr/lib/x86_64-linux-gnu/ld-2.31.so)		movq %rsp, %rdi
              ls 1443864 [006] 2275506.209908875:      7f216b426103 _start+0x3 (/usr/lib/x86_64-linux-gnu/ld-2.31.so)		callq _dl_start+0x0
              ls 1443864 [006] 2275506.209908875:      7f216b426df0 _dl_start+0x0 (/usr/lib/x86_64-linux-gnu/ld-2.31.so)	illegal instruction
              ls 1443864 [006] 2275506.209908875:      7f216b426df4 _dl_start+0x4 (/usr/lib/x86_64-linux-gnu/ld-2.31.so)	pushq %rbp
              ls 1443864 [006] 2275506.209908875:      7f216b426df5 _dl_start+0x5 (/usr/lib/x86_64-linux-gnu/ld-2.31.so)	movq %rsp, %rbp
              ls 1443864 [006] 2275506.209908875:      7f216b426df8 _dl_start+0x8 (/usr/lib/x86_64-linux-gnu/ld-2.31.so)	pushq %r15

Signed-off-by: Changbin Du <changbin.du@huawei.com>
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: changbin.du@gmail.com
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20240217074046.4100789-5-changbin.du@huawei.com

diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 578fa59f51a5580b2c8e857f875eee3bc1ec47a2..005e51df855e7cda1451abfbca8930a140138bf5 100644 (file)
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -442,9 +442,10 @@ include::itrace.txt[]
        will be printed. Each entry has function name and file/line. Enabled by
        default, disable with --no-inline.
 
---insn-trace::
-       Show instruction stream for intel_pt traces. Combine with --xed to
-       show disassembly.
+--insn-trace[=<raw|disasm>]::
+       Show instruction stream in bytes (raw) or disassembled (disasm)
+       for intel_pt traces. The default is 'raw'. To use xed, combine
+       'raw' with --xed to show disassembly done by xed.
 
 --xed::
        Run xed disassembler on output. Requires installing the xed disassembler.

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index ba4cfe040bd657a9e2cfd2d93fe81a62d8905d03..37088cc0ff1b5fb9f1d8b8d39b415af6562f7179 100644 (file)
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -3788,10 +3788,24 @@ static int perf_script__process_auxtrace_info(struct perf_session *session,
 #endif
 
 static int parse_insn_trace(const struct option *opt __maybe_unused,
-                           const char *str __maybe_unused,
-                           int unset __maybe_unused)
+                           const char *str, int unset __maybe_unused)
 {
-       parse_output_fields(NULL, "+insn,-event,-period", 0);
+       const char *fields = "+insn,-event,-period";
+       int ret;
+
+       if (str) {
+               if (strcmp(str, "disasm") == 0)
+                       fields = "+disasm,-event,-period";
+               else if (strlen(str) != 0 && strcmp(str, "raw") != 0) {
+                       fprintf(stderr, "Only accept raw|disasm\n");
+                       return -EINVAL;
+               }
+       }
+
+       ret = parse_output_fields(NULL, fields, 0);
+       if (ret < 0)
+               return ret;
+
        itrace_parse_synth_opts(opt, "i0ns", 0);
        symbol_conf.nanosecs = true;
        return 0;
@@ -3937,7 +3951,7 @@ int cmd_script(int argc, const char **argv)
                   "only consider these symbols"),
        OPT_INTEGER(0, "addr-range", &symbol_conf.addr_range,
                    "Use with -S to list traced records within address range"),
-       OPT_CALLBACK_OPTARG(0, "insn-trace", &itrace_synth_opts, NULL, NULL,
+       OPT_CALLBACK_OPTARG(0, "insn-trace", &itrace_synth_opts, NULL, "raw|disasm",
                        "Decode instructions from itrace", parse_insn_trace),
        OPT_CALLBACK_OPTARG(0, "xed", NULL, NULL, NULL,
                        "Run xed disassembler on output", parse_xed),