powerpc/ftrace: Refactor prepare_ftrace_return()

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When we have CONFIG_DYNAMIC_FTRACE_WITH_ARGS,
prepare_ftrace_return() is called by ftrace_graph_func()
otherwise prepare_ftrace_return() is called from assembly.

Refactor prepare_ftrace_return() into a static
__prepare_ftrace_return() that will be called by both
prepare_ftrace_return() and ftrace_graph_func().

It will allow GCC to fold __prepare_ftrace_return() inside
ftrace_graph_func().

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/0d42deafe353980c66cf19d3132638c05ba9f4a9.1652074503.git.christophe.leroy@csgroup.eu

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Christophe Leroy 2022-05-09 07:35:59 +02:00 • committed by Michael Ellerman

parent 804c0a166f

commit d996d5053e

1 changed files with 9 additions and 3 deletions

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arch/powerpc/kernel/trace/ftrace.c

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