| commit | 515619f209114697fabd21eed1623bfa69746815 | [log] [tgz] |
|---|---|---|
| author | Oleg Nesterov <oleg@redhat.com> | Sat Apr 13 15:36:49 2013 +0200 |
| committer | Oleg Nesterov <oleg@redhat.com> | Mon Apr 15 17:39:52 2013 +0200 |
| tree | 84655a5404fb290f8492f3f953f9e61007f7c3e2 | |
| parent | 32520b2c695b23221751eb09360a6a3dd3105b52 [diff] |
uprobes/perf: Avoid perf_trace_buf_prepare/submit if ->perf_events is empty perf_trace_buf_prepare() + perf_trace_buf_submit() make no sense if this task/CPU has no active counters. Change uprobe_perf_print() to return if hlist_empty(call->perf_events). Note: this is not uprobe-specific, we can change other users too. Signed-off-by: Oleg Nesterov <oleg@redhat.com>