diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/builtin-top.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 2227b84aa00..78f9c4576a0 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -951,9 +951,31 @@ static void event__process_sample(const event_t *self, } if (event__preprocess_sample(self, session, &al, symbol_filter) < 0 || - al.sym == NULL || al.filtered) + al.filtered) return; + if (al.sym == NULL) { + /* + * As we do lazy loading of symtabs we only will know if the + * specified vmlinux file is invalid when we actually have a + * hit in kernel space and then try to load it. So if we get + * here and there are _no_ symbols in the DSO backing the + * kernel map, bail out. + * + * We may never get here, for instance, if we use -K/ + * --hide-kernel-symbols, even if the user specifies an + * invalid --vmlinux ;-) + */ + if (al.map == session->vmlinux_maps[MAP__FUNCTION] && + RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) { + pr_err("The %s file can't be used\n", + symbol_conf.vmlinux_name); + exit(1); + } + + return; + } + syme = symbol__priv(al.sym); if (!syme->skip) { syme->count[counter]++; |