From bf93f9ed3a2cb89eb7e58851139d3be375b98027 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Thu, 27 Jan 2011 23:21:34 -0500 Subject: [PATCH] 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 Signed-off-by: Steven Rostedt --- kernel/trace/trace.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index fbff872f8db1..856e73cc1d3f 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -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; -- 2.39.5