From 30c5a3941d0f1633a6c4d6529eb3c6ff9b465b4a Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Mon, 10 Mar 2025 15:49:24 -0700 Subject: [PATCH] perf annotate: Implement code + data type annotation Sometimes it's useful to see both instructions and their data type together. Let's extend the annotate code to use data type profiling functions. To make it easy to pass more argument, introduce a struct to carry necessary information together. Also add a new annotation_option called 'code_with_type' to control the behavior. This is not enabled yet but it'll be set later from the command line. For simplicity, this is implemented for --stdio only. Reviewed-by: Ian Rogers Link: https://lore.kernel.org/r/20250310224925.799005-7-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/util/annotate.c | 73 ++++++++++++++++++++++++++++++-------- tools/perf/util/annotate.h | 1 + 2 files changed, 60 insertions(+), 14 deletions(-) diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 8a67340a64b9..1e59b9e5339d 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -760,11 +760,26 @@ static int disasm_line__print(struct disasm_line *dl, u64 start, int addr_fmt_wi return 0; } +static struct annotated_data_type * +__hist_entry__get_data_type(struct hist_entry *he, struct arch *arch, + struct debuginfo *dbg, struct disasm_line *dl, + int *type_offset); + +struct annotation_print_data { + struct hist_entry *he; + struct evsel *evsel; + struct arch *arch; + struct debuginfo *dbg; + u64 start; + int addr_fmt_width; +}; + static int -annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start, - struct evsel *evsel, struct annotation_options *opts, - int printed, struct annotation_line *queue, int addr_fmt_width) +annotation_line__print(struct annotation_line *al, struct annotation_print_data *apd, + struct annotation_options *opts, int printed, + struct annotation_line *queue) { + struct symbol *sym = apd->he->ms.sym; struct disasm_line *dl = container_of(al, struct disasm_line, al); struct annotation *notes = symbol__annotation(sym); static const char *prev_line; @@ -804,10 +819,8 @@ annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start list_for_each_entry_from(queue, ¬es->src->source, node) { if (queue == al) break; - annotation_line__print(queue, sym, start, evsel, - &queue_opts, /*printed=*/0, - /*queue=*/NULL, - addr_fmt_width); + annotation_line__print(queue, apd, &queue_opts, + /*printed=*/0, /*queue=*/NULL); } } @@ -832,7 +845,31 @@ annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start printf(" : "); - disasm_line__print(dl, start, addr_fmt_width); + disasm_line__print(dl, apd->start, apd->addr_fmt_width); + + if (opts->code_with_type && apd->dbg) { + struct annotated_data_type *data_type; + int offset = 0; + + data_type = __hist_entry__get_data_type(apd->he, apd->arch, + apd->dbg, dl, &offset); + if (data_type && data_type != NO_TYPE) { + char buf[4096]; + + printf("\t\t# data-type: %s", + data_type->self.type_name); + + if (data_type != &stackop_type && + data_type != &canary_type) + printf(" +%#x", offset); + + if (annotated_data_type__get_member_name(data_type, + buf, + sizeof(buf), + offset)) + printf(" (%s)", buf); + } + } /* * Also color the filename and line if needed, with @@ -858,7 +895,8 @@ annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start if (!*al->line) printf(" %*s:\n", width, " "); else - printf(" %*s: %-*d %s\n", width, " ", addr_fmt_width, al->line_nr, al->line); + printf(" %*s: %-*d %s\n", width, " ", apd->addr_fmt_width, + al->line_nr, al->line); } return 0; @@ -1189,8 +1227,12 @@ int hist_entry__annotate_printf(struct hist_entry *he, struct evsel *evsel) struct sym_hist *h = annotation__histogram(notes, evsel); struct annotation_line *pos, *queue = NULL; struct annotation_options *opts = &annotate_opts; - u64 start = map__rip_2objdump(map, sym->start); - int printed = 2, queue_len = 0, addr_fmt_width; + struct annotation_print_data apd = { + .he = he, + .evsel = evsel, + .start = map__rip_2objdump(map, sym->start), + }; + int printed = 2, queue_len = 0; int more = 0; bool context = opts->context; int width = annotation__pcnt_width(notes); @@ -1224,7 +1266,10 @@ int hist_entry__annotate_printf(struct hist_entry *he, struct evsel *evsel) if (verbose > 0) symbol__annotate_hits(sym, evsel); - addr_fmt_width = annotated_source__addr_fmt_width(¬es->src->source, start); + apd.addr_fmt_width = annotated_source__addr_fmt_width(¬es->src->source, + apd.start); + evsel__get_arch(evsel, &apd.arch); + apd.dbg = debuginfo__new(filename); list_for_each_entry(pos, ¬es->src->source, node) { int err; @@ -1234,8 +1279,7 @@ int hist_entry__annotate_printf(struct hist_entry *he, struct evsel *evsel) queue_len = 0; } - err = annotation_line__print(pos, sym, start, evsel, - opts, printed, queue, addr_fmt_width); + err = annotation_line__print(pos, &apd, opts, printed, queue); switch (err) { case 0: @@ -1266,6 +1310,7 @@ int hist_entry__annotate_printf(struct hist_entry *he, struct evsel *evsel) } } + debuginfo__delete(apd.dbg); free(filename); return more; diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h index 4eda409bfe0e..0e6e3f60a897 100644 --- a/tools/perf/util/annotate.h +++ b/tools/perf/util/annotate.h @@ -55,6 +55,7 @@ struct annotation_options { show_asm_raw, show_br_cntr, annotate_src, + code_with_type, full_addr; u8 offset_level; u8 disassemblers[MAX_DISASSEMBLERS]; -- 2.50.1