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| author |   Steven Rostedt <srostedt@redhat.com> | 2012-06-05 20:00:11 -0400 |
|---|---|---|
| committer |   Steven Rostedt <rostedt@goodmis.org> | 2012-07-19 13:20:37 -0400 |
| commit | 4de72395ff4cf48e23b61986dbc90b99a7c4ed97 (patch) | |
| tree | f2734ebdb6c7601c39fe4952f54d97f4aec34741 /arch/x86/kernel/ftrace.c | |
| parent | ftrace/x86: Add separate function to save regs (diff) | |
| download | linux-dev-4de72395ff4cf48e23b61986dbc90b99a7c4ed97.tar.xz linux-dev-4de72395ff4cf48e23b61986dbc90b99a7c4ed97.zip | |
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.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index b90eb1a13071..1d414029f1d8 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); |