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authorSteven Rostedt <srostedt@redhat.com>2012-06-05 20:00:11 -0400
committerSteven Rostedt <rostedt@goodmis.org>2012-07-19 13:20:37 -0400
commit4de72395ff4cf48e23b61986dbc90b99a7c4ed97 (patch)
treef2734ebdb6c7601c39fe4952f54d97f4aec34741 /arch/x86/kernel/ftrace.c
parent08f6fba503111e0336f2b4d6915a4a18f9b60e51 (diff)
ftrace/x86: Add save_regs for i386 function calls
Add saving full regs for function tracing on i386. The saving of regs was influenced by patches sent out by Masami Hiramatsu. Link: Link: http://lkml.kernel.org/r/20120711195745.379060003@goodmis.org Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'arch/x86/kernel/ftrace.c')
-rw-r--r--arch/x86/kernel/ftrace.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index b90eb1a1307..1d414029f1d 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -206,7 +206,6 @@ static int
ftrace_modify_code(unsigned long ip, unsigned const char *old_code,
unsigned const char *new_code);
-#ifdef ARCH_SUPPORTS_FTRACE_SAVE_REGS
/*
* Should never be called:
* As it is only called by __ftrace_replace_code() which is called by
@@ -221,7 +220,6 @@ int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
WARN_ON(1);
return -EINVAL;
}
-#endif
int ftrace_update_ftrace_func(ftrace_func_t func)
{
@@ -237,7 +235,6 @@ int ftrace_update_ftrace_func(ftrace_func_t func)
ret = ftrace_modify_code(ip, old, new);
-#ifdef ARCH_SUPPORTS_FTRACE_SAVE_REGS
/* Also update the regs callback function */
if (!ret) {
ip = (unsigned long)(&ftrace_regs_call);
@@ -245,7 +242,6 @@ int ftrace_update_ftrace_func(ftrace_func_t func)
new = ftrace_call_replace(ip, (unsigned long)func);
ret = ftrace_modify_code(ip, old, new);
}
-#endif
atomic_dec(&modifying_ftrace_code);