Messages in this thread Patch in this message | | | Date | Wed, 6 Dec 2023 17:16:38 -0800 | Subject | [PATCH v6 04/47] perf report: Use function to add missing maps lock | From | Ian Rogers <> |
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Switch maps__fprintf_task from loop macro maps__for_each_entry to maps__for_each_map function that takes a callback. The function holds the maps lock, which should be held during iteration.
Signed-off-by: Ian Rogers <irogers@google.com> --- tools/perf/builtin-report.c | 54 +++++++++++++++++++++++++------------ 1 file changed, 37 insertions(+), 17 deletions(-)
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 121a2781323c..a5d7bc5b843f 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -859,27 +859,47 @@ static struct task *tasks_list(struct task *task, struct machine *machine) return tasks_list(parent_task, machine); } -static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp) +struct maps__fprintf_task_args { + int indent; + FILE *fp; + size_t printed; +}; + +static int maps__fprintf_task_cb(struct map *map, void *data) { - size_t printed = 0; - struct map_rb_node *rb_node; + struct maps__fprintf_task_args *args = data; + const struct dso *dso = map__dso(map); + u32 prot = map__prot(map); + int ret; - maps__for_each_entry(maps, rb_node) { - struct map *map = rb_node->map; - const struct dso *dso = map__dso(map); - u32 prot = map__prot(map); + ret = fprintf(args->fp, + "%*s %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n", + args->indent, "", map__start(map), map__end(map), + prot & PROT_READ ? 'r' : '-', + prot & PROT_WRITE ? 'w' : '-', + prot & PROT_EXEC ? 'x' : '-', + map__flags(map) ? 's' : 'p', + map__pgoff(map), + dso->id.ino, dso->name); - printed += fprintf(fp, "%*s %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n", - indent, "", map__start(map), map__end(map), - prot & PROT_READ ? 'r' : '-', - prot & PROT_WRITE ? 'w' : '-', - prot & PROT_EXEC ? 'x' : '-', - map__flags(map) ? 's' : 'p', - map__pgoff(map), - dso->id.ino, dso->name); - } + if (ret < 0) + return ret; + + args->printed += ret; + return 0; +} + +static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp) +{ + struct maps__fprintf_task_args args = { + .indent = indent, + .fp = fp, + .printed = 0, + }; + + maps__for_each_map(maps, maps__fprintf_task_cb, &args); - return printed; + return args.printed; } static void task__print_level(struct task *task, FILE *fp, int level) -- 2.43.0.rc2.451.g8631bc7472-goog
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