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authorMasami Hiramatsu <mhiramat@kernel.org>2018-04-25 21:20:57 +0900
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2018-10-10 22:19:11 -0400
commit3c88ee194c288205733d248b51f0aca516ff4940 (patch)
treeceef87990d31031cf3da6146678096bd86ba4cdf /arch/Kconfig
parenttracing: probeevent: Add array type support (diff)
downloadlinux-dev-3c88ee194c288205733d248b51f0aca516ff4940.tar.xz
linux-dev-3c88ee194c288205733d248b51f0aca516ff4940.zip
x86: ptrace: Add function argument access API
Add regs_get_argument() which returns N th argument of the function call. Note that this chooses most probably assignment, in some case it can be incorrect (e.g. passing data structure or floating point etc.) This is expected to be called from kprobes or ftrace with regs where the top of stack is the return address. Link: http://lkml.kernel.org/r/152465885737.26224.2822487520472783854.stgit@devbox Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'arch/Kconfig')
-rw-r--r--arch/Kconfig7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig
index 6801123932a5..facace0c90fc 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -290,6 +290,13 @@ config HAVE_RSEQ
This symbol should be selected by an architecture if it
supports an implementation of restartable sequences.
+config HAVE_FUNCTION_ARG_ACCESS_API
+ bool
+ help
+ This symbol should be selected by an architecure if it supports
+ the API needed to access function arguments from pt_regs,
+ declared in asm/ptrace.h
+
config HAVE_CLK
bool
help