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Message-ID: <CAP-5=fVAYNy9pk9zyQRySrJ-1j12dC9ogiW94133Li_WQHd6RA@mail.gmail.com>
Date: Wed, 16 Jul 2025 08:00:37 -0700
From: Ian Rogers <irogers@...gle.com>
To: Namhyung Kim <namhyung@...nel.org>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>, Kan Liang <kan.liang@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>, Adrian Hunter <adrian.hunter@...el.com>,
Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...nel.org>,
LKML <linux-kernel@...r.kernel.org>, linux-perf-users@...r.kernel.org
Subject: Re: [PATCH v3 5/8] perf annotate: Add --code-with-type support for TUI
On Tue, Jul 15, 2025 at 10:01 PM Namhyung Kim <namhyung@...nel.org> wrote:
>
> Until now, the --code-with-type option is available only on stdio.
> But it was an artifical limitation because of an implemention issue.
>
> Implement the same logic in annotation_line__write() for stdio2/TUI.
> Make disasm_line__write() return the number of printed characters so
> that it can skip unnecessary operations when the screen is full.
>
> Remove the limitation and update the man page.
>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> ---
> tools/perf/Documentation/perf-annotate.txt | 1 -
> tools/perf/builtin-annotate.c | 5 --
> tools/perf/ui/browsers/annotate.c | 6 +++
> tools/perf/util/annotate.c | 61 +++++++++++++++++++---
> 4 files changed, 61 insertions(+), 12 deletions(-)
>
> diff --git a/tools/perf/Documentation/perf-annotate.txt b/tools/perf/Documentation/perf-annotate.txt
> index 46090c5b42b4762f..547f1a2680185e3c 100644
> --- a/tools/perf/Documentation/perf-annotate.txt
> +++ b/tools/perf/Documentation/perf-annotate.txt
> @@ -170,7 +170,6 @@ include::itrace.txt[]
>
> --code-with-type::
> Show data type info in code annotation (for memory instructions only).
> - Currently it only works with --stdio option.
>
>
> SEE ALSO
> diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
> index 9833c2c82a2fee46..6debd725392db4a4 100644
> --- a/tools/perf/builtin-annotate.c
> +++ b/tools/perf/builtin-annotate.c
> @@ -917,11 +917,6 @@ int cmd_annotate(int argc, const char **argv)
> symbol_conf.annotate_data_sample = true;
> } else if (annotate_opts.code_with_type) {
> symbol_conf.annotate_data_member = true;
> -
> - if (!annotate.use_stdio) {
> - pr_err("--code-with-type only works with --stdio.\n");
> - goto out_delete;
> - }
> }
>
> setup_browser(true);
> diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
> index 23bea5b165774ae7..cdee1969f3131a7c 100644
> --- a/tools/perf/ui/browsers/annotate.c
> +++ b/tools/perf/ui/browsers/annotate.c
> @@ -4,6 +4,7 @@
> #include "../ui.h"
> #include "../../util/annotate.h"
> #include "../../util/debug.h"
> +#include "../../util/debuginfo.h"
> #include "../../util/dso.h"
> #include "../../util/hist.h"
> #include "../../util/sort.h"
> @@ -1101,6 +1102,9 @@ int __hist_entry__tui_annotate(struct hist_entry *he, struct map_symbol *ms,
>
> ui_helpline__push("Press ESC to exit");
>
> + if (annotate_opts.code_with_type)
> + browser.dbg = debuginfo__new(dso__long_name(dso));
> +
> browser.b.width = notes->src->widths.max_line_len;
> browser.b.nr_entries = notes->src->nr_entries;
> browser.b.entries = ¬es->src->source;
> @@ -1111,6 +1115,8 @@ int __hist_entry__tui_annotate(struct hist_entry *he, struct map_symbol *ms,
>
> ret = annotate_browser__run(&browser, evsel, hbt);
>
> + if (annotate_opts.code_with_type)
> + debuginfo__delete(browser.dbg);
> if (not_annotated && !notes->src->tried_source)
> annotated_source__purge(notes->src);
>
> diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
> index d69e406c1bc289cd..06ddc7a9f58722a4 100644
> --- a/tools/perf/util/annotate.c
> +++ b/tools/perf/util/annotate.c
> @@ -1362,6 +1362,11 @@ static int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp,
> };
> struct annotation_line *al;
>
> + if (annotate_opts.code_with_type) {
> + evsel__get_arch(apd->evsel, &apd->arch);
> + apd->dbg = debuginfo__new(dso__long_name(map__dso(apd->he->ms.map)));
This API looks unfortunate. A dso may have a long name (it'd be easier
to understand if this were called path rather than long name) or a
build ID. The API isn't the fault of this change, but I thought I'd
mention as we move toward greater use of build IDs.
Thanks,
Ian
> + }
> +
> list_for_each_entry(al, ¬es->src->source, node) {
> if (annotation_line__filter(al))
> continue;
> @@ -1370,6 +1375,9 @@ static int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp,
> wops.first_line = false;
> }
>
> + if (annotate_opts.code_with_type)
> + debuginfo__delete(apd->dbg);
> +
> return 0;
> }
>
> @@ -1743,7 +1751,7 @@ static double annotation_line__max_percent(struct annotation_line *al,
> return percent_max;
> }
>
> -static void disasm_line__write(struct disasm_line *dl, struct annotation *notes,
> +static int disasm_line__write(struct disasm_line *dl, struct annotation *notes,
> void *obj, char *bf, size_t size,
> void (*obj__printf)(void *obj, const char *fmt, ...),
> void (*obj__write_graph)(void *obj, int graph))
> @@ -1771,8 +1779,8 @@ static void disasm_line__write(struct disasm_line *dl, struct annotation *notes,
> obj__printf(obj, " ");
> }
>
> - disasm_line__scnprintf(dl, bf, size, !annotate_opts.use_offset,
> - notes->src->widths.max_ins_name);
> + return disasm_line__scnprintf(dl, bf, size, !annotate_opts.use_offset,
> + notes->src->widths.max_ins_name);
> }
>
> static void ipc_coverage_string(char *bf, int size, struct annotation *notes)
> @@ -2116,11 +2124,52 @@ void annotation_line__write(struct annotation_line *al, struct annotation *notes
>
> width -= printed + 3;
>
> - disasm_line__write(disasm_line(al), notes, obj, bf, sizeof(bf), obj__printf, obj__write_graph);
> + printed = disasm_line__write(disasm_line(al), notes, obj, bf, sizeof(bf),
> + obj__printf, obj__write_graph);
> +
> + obj__printf(obj, "%s", bf);
> + width -= printed;
> +
> + if (annotate_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,
> + disasm_line(al),
> + &offset);
> + if (data_type && data_type != NO_TYPE) {
> + char member[256];
> +
> + printed = scnprintf(bf, sizeof(bf),
> + "\t\t# data-type: %s",
> + data_type->self.type_name);
>
> - obj__printf(obj, "%-*s", width, bf);
> + if (data_type != &stackop_type &&
> + data_type != &canary_type &&
> + sizeof(bf) > (size_t)printed) {
> + printed += scnprintf(bf + printed,
> + sizeof(bf) - printed,
> + " +%#x", offset);
> + }
> +
> + if (annotated_data_type__get_member_name(data_type,
> + member,
> + sizeof(member),
> + offset) &&
> + sizeof(bf) > (size_t)printed) {
> + printed += scnprintf(bf + printed,
> + sizeof(bf) - printed,
> + " (%s)", member);
> + }
>
> - (void)apd;
> + obj__printf(obj, "%-*s", width, bf);
> + } else {
> + obj__printf(obj, "%-*s", width, " ");
> + }
> + } else {
> + obj__printf(obj, "%-*s", width, " ");
> + }
> }
>
> }
> --
> 2.50.0
>
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