diff options
| -rw-r--r-- | tools/perf/util/probe-event.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 16822a8a540f..2d056f02ae40 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -2800,13 +2800,18 @@ static void warn_uprobe_event_compat(struct probe_trace_event *tev) if (!tev->uprobes || tev->nargs == 0 || !buf) goto out; - for (i = 0; i < tev->nargs; i++) - if (strglobmatch(tev->args[i].value, "[$@+-]*")) { - pr_warning("Please upgrade your kernel to at least " - "3.14 to have access to feature %s\n", + for (i = 0; i < tev->nargs; i++) { + if (strchr(tev->args[i].value, '@')) { + pr_warning("%s accesses a variable by symbol name, but that is not supported for user application probe.\n", + tev->args[i].value); + break; + } + if (strglobmatch(tev->args[i].value, "[$+-]*")) { + pr_warning("Please upgrade your kernel to at least 3.14 to have access to feature %s\n", tev->args[i].value); break; } + } out: free(buf); } |