From 34078a5e44db3cbed2e0ed580c29a39d94e0cd97 Mon Sep 17 00:00:00 2001 From: Abhishek Sagar <sagar.abhishek@gmail.com> Date: Tue, 3 Jun 2008 08:33:41 +0530 Subject: ftrace: prevent freeing of all failed updates Steven Rostedt wrote: > If we unload a module and reload it, will it ever get converted again? The intent was always to filter core kernel functions to prevent their freeing. Here's a fix which should allow re-recording of module call-sites. Signed-off-by: Ingo Molnar <mingo@elte.hu> --- kernel/trace/ftrace.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'kernel/trace') diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index ad568c742bf..0118979e211 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -430,7 +430,7 @@ static void ftrace_replace_code(int enable) if (failed && (rec->flags & FTRACE_FL_CONVERTED)) { rec->flags |= FTRACE_FL_FAILED; if ((system_state == SYSTEM_BOOTING) || - !kernel_text_address(rec->ip)) { + !core_kernel_text(rec->ip)) { ftrace_del_hash(rec); ftrace_free_rec(rec); } @@ -651,10 +651,9 @@ static int __ftrace_update_code(void *ignore) ftrace_update_cnt++; } else { if ((system_state == SYSTEM_BOOTING) || - !kernel_text_address(p->ip)) { + !core_kernel_text(p->ip)) { ftrace_del_hash(p); ftrace_free_rec(p); - } } } -- cgit v1.2.3-18-g5258