diff options
Diffstat (limited to 'tapset-perfmon.cxx')
| -rw-r--r-- | tapset-perfmon.cxx | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tapset-perfmon.cxx b/tapset-perfmon.cxx index 0188439c..b920b51d 100644 --- a/tapset-perfmon.cxx +++ b/tapset-perfmon.cxx @@ -164,6 +164,11 @@ perf_builder::build(systemtap_session & sess, void register_tapset_perf(systemtap_session& s) { + // make sure we have support before registering anything + // XXX need additional version checks too? + if (s.kernel_config["CONFIG_PERF_EVENTS"] != "y") + return; + match_node* root = s.pattern_root; derived_probe_builder *builder = new perf_builder(); |