Commit bf93f9ed authored Jan 27, 2011 by Steven Rostedt Committed by Steven Rostedt Feb 07, 2011

tracing/filter: Increase the max preds to 2^14



Now that the filter logic does not require to save the pred results
on the stack, we can increase the max number of preds we allow.
As the preds are index by a short value, and we use the MSBs as flags
we can increase the max preds to 2^14 (16384) which should be way
more than enough.

Cc: Tom Zanussi <tzanussi@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

parent 4a3d27e9

kernel/trace/trace.h

+8 −1

Original line number	Diff line number	Diff line
		@@ -680,7 +680,14 @@ struct event_subsystem {
		#define FILTER_PRED_IS_RIGHT (1 << 15)
		#define FILTER_PRED_FOLD (1 << 15)

		#define MAX_FILTER_PRED 32
		/*
		* The max preds is the size of unsigned short with
		* two flags at the MSBs. One bit is used for both the IS_RIGHT
		* and FOLD flags. The other is reserved.
		*
		* 2^14 preds is way more than enough.
		*/
		#define MAX_FILTER_PRED 16384

		struct filter_pred;
		struct regex;

Admin message