powerpc/ftrace: Implement CONFIG_DYNAMIC_FTRACE_WITH_ARGS

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Implement CONFIG_DYNAMIC_FTRACE_WITH_ARGS. It accelerates the call
of livepatching.

Also note that powerpc being the last one to convert to
CONFIG_DYNAMIC_FTRACE_WITH_ARGS, it will now be possible to remove
klp_arch_set_pc() on all architectures.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/5831f711a778fcd6eb51eb5898f1faae4378b35b.1640017960.git.christophe.leroy@csgroup.eu

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This commit is contained in:

Christophe Leroy 2021-12-20 16:38:28 +00:00 • committed by Michael Ellerman

parent c75388a8ce

commit 40b035efe2

3 changed files with 19 additions and 3 deletions

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1

arch/powerpc/Kconfig

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17

arch/powerpc/include/asm/ftrace.h

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4

arch/powerpc/include/asm/livepatch.h

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