s390/ftrace: Avoid trampolines if possible

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When a sequential instruction fetching facility is present, it is safe
to patch ftrace NOPs in function prologues. All of them are 8-byte
aligned.

Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

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Vasily Gorbik 2024-08-28 19:06:55 +02:00

parent 30799152c3

commit efd9cd019e

1 changed files with 53 additions and 6 deletions

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59

arch/s390/kernel/ftrace.c

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