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ftrace: Implement separate user function filtering

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ftrace_ops that are registered to trace functions can now be
agnostic to each other in respect to what functions they trace.
Each ops has their own hash of the functions they want to trace
and a hash to what they do not want to trace. A empty hash for
the functions they want to trace denotes all functions should
be traced that are not in the notrace hash.

Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt 2011-05-04 09:27:52 -04:00 • committed by Steven Rostedt
parent 07fd5515f3
commit b848914ce3
6 changed files with 166 additions and 39 deletions
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1
kernel/trace/trace_stack.c
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@ -133,6 +133,7 @@ stack_trace_call(unsigned long ip, unsigned long parent_ip)
static struct ftrace_ops trace_ops __read_mostly =
{
.func = stack_trace_call,
.flags = FTRACE_OPS_FL_GLOBAL,
};
static ssize_t