tracing: Add hist trigger support for compound keys
authorTom Zanussi <tom.zanussi@linux.intel.com>
Thu, 3 Mar 2016 18:54:44 +0000 (12:54 -0600)
committerSteven Rostedt <rostedt@goodmis.org>
Tue, 19 Apr 2016 16:16:33 +0000 (12:16 -0400)
commit76a3b0c8ac344e1d0f436160cbb59b670b086947
tree9a4c5943aae4e08208a0c77a6c457f1ca3650542
parentf2606835d70d2a2e6a134f01821da8149e124796
tracing: Add hist trigger support for compound keys

Allow users to specify multiple trace event fields to use in keys by
allowing multiple fields in the 'keys=' keyword.  With this addition,
any unique combination of any of the fields named in the 'keys'
keyword will result in a new entry being added to the hash table.

Link: http://lkml.kernel.org/r/0cfa24e6ac3b0dcece7737d94aa1f322ae3afc4b.1457029949.git.tom.zanussi@linux.intel.com
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Tested-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
kernel/trace/trace.c
kernel/trace/trace_events_hist.c