function-graph: prevent more than one tracer registering

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Impact: prevent crash due to multiple function graph tracers

The function graph tracer can currently only handle a single tracer
being registered. If another tracer registers with the function
graph tracer it can crash the system.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>

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Steven Rostedt 2009-03-24 00:18:31 -04:00

parent 5d1a03dc54

commit 05ce5818ad

1 changed files with 6 additions and 0 deletions

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kernel/trace/ftrace.c

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