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authorHeiko Carstens <hca@linux.ibm.com>2021-10-12 15:38:01 +0200
committerVasily Gorbik <gor@linux.ibm.com>2021-10-19 15:39:53 +0200
commitc316eb4460463b6dd1aee6d241cb20323a0030aa (patch)
tree13371f5edc12fb7063a1be66699bdfb05730e830
parent3d487acf1b1a5d1473e27c093c97a2a90062a41b (diff)
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: 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>
-rw-r--r--arch/x86/Kconfig1
-rw-r--r--samples/Kconfig5
2 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index ab83c22d274e..620fce152be9 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -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
diff --git a/samples/Kconfig b/samples/Kconfig
index b0503ef058d3..501f66309118 100644
--- a/samples/Kconfig
+++ b/samples/Kconfig
@@ -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