function_graph: Remove the unused variable func

Variable func is not effectively used, so delete it.

kernel/trace/trace_functions_graph.c:925:16: warning: variable ‘func’ set but not used.

This happened because the variable "func" which came from "call->func" was
replaced by "ret_func" coming from "graph_ret->func" but "func" wasn't
removed after the replacement.

Link: https://lore.kernel.org/20250307021412.119107-1-jiapeng.chong@linux.alibaba.com
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=19250
Fixes: ff5c9c576e754 ("ftrace: Add support for function argument to graph tracer")
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index 71b2fb068b6bd935c0cceae64343e820751c6b17..ed61ff719aa4b01834a2e28d6e987a8bb2182191 100644 (file)
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -922,7 +922,6 @@ print_graph_entry_leaf(struct trace_iterator *iter,
        struct ftrace_graph_ent *call;
        unsigned long long duration;
        unsigned long ret_func;
-       unsigned long func;
        int args_size;
        int cpu = iter->cpu;
        int i;
@@ -933,8 +932,6 @@ print_graph_entry_leaf(struct trace_iterator *iter,
        call = &entry->graph_ent;
        duration = ret_entry->rettime - ret_entry->calltime;
 
-       func = call->func + iter->tr->text_delta;
-
        if (data) {
                struct fgraph_cpu_data *cpu_data;