Commit 90955d77 authored Jan 23, 2023 by Mark Rutland Committed by Catalin Marinas Jan 24, 2023

arm64: ftrace: Update stale comment



In commit:

  26299b3f ("ftrace: arm64: move from REGS to ARGS")

... we folded ftrace_regs_entry into ftrace_caller, and
ftrace_regs_entry no longer exists.

Update the comment accordingly.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Florent Revest <revest@chromium.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20230123134603.1064407-8-mark.rutland@arm.com


Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

parent e4ecbe83

arch/arm64/kernel/ftrace.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -209,7 +209,7 @@ int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
		* \| NOP \| MOV X9, LR \| MOV X9, LR \|
		* \| NOP \| NOP \| BL <entry> \|
		*
		* The LR value will be recovered by ftrace_regs_entry, and restored into LR
		* The LR value will be recovered by ftrace_caller, and restored into LR
		* before returning to the regular function prologue. When a function is not
		* being traced, the MOV is not harmful given x9 is not live per the AAPCS.
		*