[v2] function_graph: remove unnecessary initialization in ftrace_graph_ret_addr()

[PATCH v2] function_graph: remove unnecessary initialization in ftrace_graph_ret_addr()

Oleg Nesterov posted 1 patch 2 months, 1 week ago

Diff against v1
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kernel/trace/fgraph.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

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[PATCH v2] function_graph: remove unnecessary initialization in ftrace_graph_ret_addr()

Posted by Oleg Nesterov 2 months, 1 week ago

After the commit 29c1c24a2707 ("function_graph: Fix up ftrace_graph_ret_addr()")
ftrace_graph_ret_addr() doesn't need to initialize "int i" at the start.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
---
 kernel/trace/fgraph.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/fgraph.c b/kernel/trace/fgraph.c
index d7d4fb403f6f..45c02bf18304 100644
--- a/kernel/trace/fgraph.c
+++ b/kernel/trace/fgraph.c
@@ -892,7 +892,7 @@ unsigned long ftrace_graph_ret_addr(struct task_struct *task, int *idx,
 {
 	struct ftrace_ret_stack *ret_stack;
 	unsigned long return_handler = (unsigned long)dereference_kernel_function_descriptor(return_to_handler);
-	int i = task->curr_ret_stack;
+	int i;
 
 	if (ret != return_handler)
 		return ret;
-- 
2.25.1.362.g51ebf55