[for-next][PATCH 5/7] ftrace: Fix accounting bug with direct->count in register_ftrace_direct()

From: Steven Rostedt
Date: Sun Nov 17 2019 - 17:13:32 EST


From: "Steven Rostedt (VMware)" <rostedt@xxxxxxxxxxx>

The direct->count wasn't being updated properly, where it only was updated
when the first entry was added, but should be updated every time.

Fixes: 013bf0da04748 ("ftrace: Add ftrace_find_direct_func()")
Signed-off-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
---
kernel/trace/ftrace.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 834f3556ea1e..32e4e5ffdd97 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -5093,8 +5093,7 @@ int register_ftrace_direct(unsigned long ip, unsigned long addr)
ftrace_direct_func_count--;
}
} else {
- if (!direct->count)
- direct->count++;
+ direct->count++;
}
out_unlock:
mutex_unlock(&direct_mutex);
--
2.24.0