mirror of
https://github.com/Fishwaldo/linux-bl808.git
synced 2025-06-17 20:25:19 +00:00
ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs
In preparation to have arguments of a function passed to callbacks attached to functions as default, change the default callback prototype to receive a struct ftrace_regs as the forth parameter instead of a pt_regs. For callbacks that set the FL_SAVE_REGS flag in their ftrace_ops flags, they will now need to get the pt_regs via a ftrace_get_regs() helper call. If this is called by a callback that their ftrace_ops did not have a FL_SAVE_REGS flag set, it that helper function will return NULL. This will allow the ftrace_regs to hold enough just to get the parameters and stack pointer, but without the worry that callbacks may have a pt_regs that is not completely filled. Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
parent
58954b3be8
commit
d19ad0775d
18 changed files with 71 additions and 45 deletions
|
@ -40,8 +40,9 @@ struct klp_ops *klp_find_ops(void *old_func)
|
|||
static void notrace klp_ftrace_handler(unsigned long ip,
|
||||
unsigned long parent_ip,
|
||||
struct ftrace_ops *fops,
|
||||
struct pt_regs *regs)
|
||||
struct ftrace_regs *fregs)
|
||||
{
|
||||
struct pt_regs *regs = ftrace_get_regs(fregs);
|
||||
struct klp_ops *ops;
|
||||
struct klp_func *func;
|
||||
int patch_state;
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue