s390/ftrace: simplify enabling/disabling of ftrace_graph_caller

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We can simply patch the mask field within the branch relative on
condition instruction at the beginning of the ftrace_graph_caller
code block.
This makes the logic even simpler and we get rid of the displacement
calculation.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Heiko Carstens 2014-10-08 10:03:08 +02:00 • committed by Martin Schwidefsky

parent 53255c9a4d

commit 0cccdda8d1

2 changed files with 10 additions and 15 deletions

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22

arch/s390/kernel/ftrace.c

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3

arch/s390/kernel/mcount.S

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