From a448276ce515c91cde4675be497364b91c764d95 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (VMware)" Date: Fri, 7 Dec 2018 13:13:28 -0500 Subject: arm64: Use ftrace_graph_get_ret_stack() instead of curr_ret_stack The structure of the ret_stack array on the task struct is going to change, and accessing it directly via the curr_ret_stack index will no longer give the ret_stack entry that holds the return address. To access that, architectures must now use ftrace_graph_get_ret_stack() to get the associated ret_stack that matches the saved return address. Cc: linux-arm-kernel@lists.infradead.org Cc: Will Deacon Cc: Mark Rutland Cc: Catalin Marinas Signed-off-by: Steven Rostedt (VMware) --- arch/arm64/kernel/perf_callchain.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/arm64/kernel/perf_callchain.c') diff --git a/arch/arm64/kernel/perf_callchain.c b/arch/arm64/kernel/perf_callchain.c index bcafd7dcfe8b..1b792b46604e 100644 --- a/arch/arm64/kernel/perf_callchain.c +++ b/arch/arm64/kernel/perf_callchain.c @@ -164,7 +164,7 @@ void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, frame.fp = regs->regs[29]; frame.pc = regs->pc; #ifdef CONFIG_FUNCTION_GRAPH_TRACER - frame.graph = current->curr_ret_stack; + frame.graph = 0; #endif walk_stackframe(current, &frame, callchain_trace, entry); -- cgit