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authorSteven Rostedt (VMware) <rostedt@goodmis.org>2019-11-08 13:11:27 -0500
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2019-11-13 09:36:48 -0500
commit013bf0da0474816f57739daa006c8564ad7396a3 (patch)
tree807760ebd25ee9295237364be6c9fe090f239f98 /samples
parent763e34e74bb7d5c316015e2e39fcc8520bfd071c (diff)
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ftrace: Add ftrace_find_direct_func()
As function_graph tracer modifies the return address to insert a trampoline to trace the return of a function, it must be aware of a direct caller, as when it gets called, the function's return address may not be at on the stack where it expects. It may have to see if that return address points to the a direct caller and adjust if it is. Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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