Em Tue, May 12, 2020 at 03:19:16PM +0300, Adrian Hunter escreveu: > In the absence of any modules, no "modules" map is created, but there are > other executable pages to map, due to eBPF JIT, kprobe or ftrace. Map them > by recognizing that the first "module" symbol is not necessarily from a > module, and adjust the map accordingly.
Applied, - Arnaldo > Signed-off-by: Adrian Hunter <[email protected]> > --- > tools/perf/util/symbol-elf.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c > index be5b493f8284..5e43054bffea 100644 > --- a/tools/perf/util/symbol-elf.c > +++ b/tools/perf/util/symbol-elf.c > @@ -1458,6 +1458,7 @@ struct kcore_copy_info { > u64 first_symbol; > u64 last_symbol; > u64 first_module; > + u64 first_module_symbol; > u64 last_module_symbol; > size_t phnum; > struct list_head phdrs; > @@ -1534,6 +1535,8 @@ static int kcore_copy__process_kallsyms(void *arg, > const char *name, char type, > return 0; > > if (strchr(name, '[')) { > + if (!kci->first_module_symbol || start < > kci->first_module_symbol) > + kci->first_module_symbol = start; > if (start > kci->last_module_symbol) > kci->last_module_symbol = start; > return 0; > @@ -1731,6 +1734,10 @@ static int kcore_copy__calc_maps(struct > kcore_copy_info *kci, const char *dir, > kci->etext += page_size; > } > > + if (kci->first_module_symbol && > + (!kci->first_module || kci->first_module_symbol < > kci->first_module)) > + kci->first_module = kci->first_module_symbol; > + > kci->first_module = round_down(kci->first_module, page_size); > > if (kci->last_module_symbol) { > -- > 2.17.1 > -- - Arnaldo
