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| author | Steven Rostedt <srostedt@redhat.com> | 2011-08-09 12:50:46 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2012-07-19 13:18:49 -0400 |
| commit | a1e2e31d175a1349274eba3465d17616c6725f8c (patch) | |
| tree | 5f92ba7a822f8a9911aa50157f796213bfac4ebb /include/linux/ftrace.h | |
| parent | ccf3672d530170c98c734dfc5db07d64bcbad2ad (diff) | |
| download | linux-a1e2e31d175a1349274eba3465d17616c6725f8c.tar.gz linux-a1e2e31d175a1349274eba3465d17616c6725f8c.tar.xz | |
ftrace: Return pt_regs to function trace callback
Return as the 4th paramater to the function tracer callback the pt_regs.
Later patches that implement regs passing for the architectures will require
having the ftrace_ops set the SAVE_REGS flag, which will tell the arch
to take the time to pass a full set of pt_regs to the ftrace_ops callback
function. If the arch does not support it then it should pass NULL.
If an arch can pass full regs, then it should define:
ARCH_SUPPORTS_FTRACE_SAVE_REGS to 1
Link: http://lkml.kernel.org/r/20120702201821.019966811@goodmis.org
Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'include/linux/ftrace.h')
| -rw-r--r-- | include/linux/ftrace.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 3651fdc3bec9..e4202881fb00 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -10,6 +10,7 @@ #include <linux/kallsyms.h> #include <linux/linkage.h> #include <linux/bitops.h> +#include <linux/ptrace.h> #include <linux/ktime.h> #include <linux/sched.h> #include <linux/types.h> @@ -54,7 +55,7 @@ ftrace_enable_sysctl(struct ctl_table *table, int write, struct ftrace_ops; typedef void (*ftrace_func_t)(unsigned long ip, unsigned long parent_ip, - struct ftrace_ops *op); + struct ftrace_ops *op, struct pt_regs *regs); /* * FTRACE_OPS_FL_* bits denote the state of ftrace_ops struct and are @@ -188,7 +189,8 @@ static inline int ftrace_function_local_disabled(struct ftrace_ops *ops) return *this_cpu_ptr(ops->disabled); } -extern void ftrace_stub(unsigned long a0, unsigned long a1, struct ftrace_ops *op); +extern void ftrace_stub(unsigned long a0, unsigned long a1, + struct ftrace_ops *op, struct pt_regs *regs); #else /* !CONFIG_FUNCTION_TRACER */ /* |