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samples: add HAVE_SAMPLE_FTRACE_DIRECT config option

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Add HAVE_SAMPLE_FTRACE_DIRECT config option which can be selected by
architectures which have support for ftrace direct call samples.

Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20211012133802.2460757-4-hca@linux.ibm.com
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2021-10-12 15:38:01 +02:00 committed by Vasily Gorbik
parent 3d487acf1b
commit c316eb4460
2 changed files with 5 additions and 1 deletions
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1
arch/x86/Kconfig
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@ -190,6 +190,7 @@ config X86
select HAVE_DYNAMIC_FTRACE_WITH_REGS
select HAVE_DYNAMIC_FTRACE_WITH_ARGS if X86_64
select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
select HAVE_SAMPLE_FTRACE_DIRECT if X86_64
select HAVE_EBPF_JIT
select HAVE_EFFICIENT_UNALIGNED_ACCESS
select HAVE_EISA

5
samples/Kconfig
View File

@ -26,7 +26,7 @@ config SAMPLE_TRACE_PRINTK
config SAMPLE_FTRACE_DIRECT
tristate "Build register_ftrace_direct() example"
depends on DYNAMIC_FTRACE_WITH_DIRECT_CALLS && m
depends on X86_64 # has x86_64 inlined asm
depends on HAVE_SAMPLE_FTRACE_DIRECT
help
This builds an ftrace direct function example
that hooks to wake_up_process and prints the parameters.
@ -224,3 +224,6 @@ config SAMPLE_WATCH_QUEUE
sb_notify() syscalls and the KEYCTL_WATCH_KEY keyctl() function.
endif # SAMPLES
config HAVE_SAMPLE_FTRACE_DIRECT
bool