Commit c316eb44 authored by Heiko Carstens's avatar Heiko Carstens Committed by Vasily Gorbik
Browse files

samples: add HAVE_SAMPLE_FTRACE_DIRECT config option 



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

Acked-by: default avatarIlya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: default avatarSven Schnelle <svens@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Acked-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20211012133802.2460757-4-hca@linux.ibm.com


Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 3d487acf

arch/x86/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -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

samples/Kconfig

+4 −1
Original line number Diff line number Diff line
@@ -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