ftrace: Add selftest to test function trace recursion protection

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Add selftests to test the function tracing recursion protection actually
does work. It also tests if a ftrace_ops states it will perform its own
protection. Although, even if the ftrace_ops states it will protect itself,
the ftrace infrastructure may still provide protection if the arch does
not support all features or another ftrace_ops is registered.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

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Steven Rostedt 2012-07-20 13:08:05 -04:00 • committed by Steven Rostedt

parent 47239c4d8d

commit ea701f11da

3 changed files with 163 additions and 0 deletions

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6

include/linux/ftrace.h

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21

kernel/trace/ftrace.c

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136

kernel/trace/trace_selftest.c

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