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authorJan Kiszka <jan.kiszka@siemens.com>2013-03-26 17:53:03 +0100
committerSteven Rostedt <rostedt@rostedt.homelinux.com>2013-04-08 12:24:22 -0400
commit5000c418840b309251c5887f0b56503aae30f84c (patch)
treedd6b37707670ac5eaaba9f395c999328904dd38b
parent2930e04d00e113ae24bb2b7c2b58de7b648a62c7 (diff)
ftrace: Consistently restore trace function on sysctl enabling
If we reenable ftrace via syctl, we currently set ftrace_trace_function based on the previous simplistic algorithm. This is inconsistent with what update_ftrace_function does. So better call that helper instead. Link: http://lkml.kernel.org/r/5151D26F.1070702@siemens.com Cc: stable@vger.kernel.org Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
-rw-r--r--kernel/trace/ftrace.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 6893d5a2bf08..cc4943c7ce6d 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -4555,12 +4555,8 @@ ftrace_enable_sysctl(struct ctl_table *table, int write,
ftrace_startup_sysctl();
/* we are starting ftrace again */
- if (ftrace_ops_list != &ftrace_list_end) {
- if (ftrace_ops_list->next == &ftrace_list_end)
- ftrace_trace_function = ftrace_ops_list->func;
- else
- ftrace_trace_function = ftrace_ops_list_func;
- }
+ if (ftrace_ops_list != &ftrace_list_end)
+ update_ftrace_function();
} else {
/* stopping ftrace calls (just send to ftrace_stub) */