diff options
| author | Oleg Nesterov <oleg@redhat.com> | 2013-04-13 15:36:49 +0200 |
|---|---|---|
| committer | Oleg Nesterov <oleg@redhat.com> | 2013-04-15 17:39:52 +0200 |
| commit | 515619f209114697fabd21eed1623bfa69746815 (patch) | |
| tree | 84655a5404fb290f8492f3f953f9e61007f7c3e2 /arch | |
| 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>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions