s390/ftrace: Avoid extra serialization for graph caller patching

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The only context where ftrace_enable_ftrace_graph_caller()
or ftrace_disable_ftrace_graph_caller() is called also calls
ftrace_arch_code_modify_post_process(), which already performs
text_poke_sync_lock().

ftrace_run_update_code()
	arch_ftrace_update_code()
		ftrace_modify_all_code()
			ftrace_enable_ftrace_graph_caller()/ftrace_disable_ftrace_graph_caller()
	ftrace_arch_code_modify_post_process()
		text_poke_sync_lock()

Remove the redundant serialization.

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

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This commit is contained in:

Vasily Gorbik 2024-08-28 19:07:00 +02:00

parent 5200614080

commit 36dff49b96

1 changed files with 2 additions and 14 deletions

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16

arch/s390/kernel/ftrace.c

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