Move code for adjusting size of direct hash into separate
adjust_direct_size function. It will be used in following
patches, there's no functional change.
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
kernel/trace/ftrace.c | 39 +++++++++++++++++++++++----------------
1 file changed, 23 insertions(+), 16 deletions(-)
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 27e9210073d3..cb8b7a66c6af 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -5055,6 +5055,27 @@ static int check_direct_ip(unsigned long ip)
return 0;
}
+static int adjust_direct_size(int new_size, struct ftrace_hash **free_hash)
+{
+ if (ftrace_hash_empty(direct_functions) ||
+ direct_functions->count > 2 * (1 << direct_functions->size_bits)) {
+ struct ftrace_hash *new_hash;
+ int size = ftrace_hash_empty(direct_functions) ? 0 : new_size;
+
+ if (size < 32)
+ size = 32;
+
+ new_hash = dup_hash(direct_functions, size);
+ if (!new_hash)
+ return -ENOMEM;
+
+ *free_hash = direct_functions;
+ direct_functions = new_hash;
+ }
+
+ return 0;
+}
+
/**
* register_ftrace_direct - Call a custom trampoline directly
* @ip: The address of the nop at the beginning of a function
@@ -5086,22 +5107,8 @@ int register_ftrace_direct(unsigned long ip, unsigned long addr)
goto out_unlock;
ret = -ENOMEM;
- if (ftrace_hash_empty(direct_functions) ||
- direct_functions->count > 2 * (1 << direct_functions->size_bits)) {
- struct ftrace_hash *new_hash;
- int size = ftrace_hash_empty(direct_functions) ? 0 :
- direct_functions->count + 1;
-
- if (size < 32)
- size = 32;
-
- new_hash = dup_hash(direct_functions, size);
- if (!new_hash)
- goto out_unlock;
-
- free_hash = direct_functions;
- direct_functions = new_hash;
- }
+ if (adjust_direct_size(direct_functions->count + 1, &free_hash))
+ goto out_unlock;
entry = kmalloc(sizeof(*entry), GFP_KERNEL);
if (!entry)
--
2.26.2
