| commit | 4ca530852346be239b7c19e7bec5d2b78855bebe | [log] [tgz] |
|---|---|---|
| author | Steven Rostedt <srostedt@redhat.com> | Mon Mar 16 19:20:15 2009 -0400 |
| committer | Steven Rostedt <srostedt@redhat.com> | Mon Mar 16 23:27:06 2009 -0400 |
| tree | 96e5252faaf362115a96ed6df7c4e4f698a027dc | |
| parent | 03303549b1695dc024d4a653cc16bd79f78f9750 [diff] |
tracing: protect reader of cmdline output Impact: fix to one cause of incorrect comm outputs in trace The spinlock only protected the creation of a comm <=> pid pair. But it was possible that a reader could look up a pid, and get the wrong comm because it had no locking. This also required changing trace_find_cmdline to copy the comm cache and not just send back a pointer to it. Signed-off-by: Steven Rostedt <srostedt@redhat.com>