5.4-stable review patch. If anyone has any objections, please let me know.
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From: Uros Bizjak ubizjak@gmail.com
[ Upstream commit eb887c4567d1b0e7684c026fe7df44afa96589e6 ]
Use atomic64_inc_return(&ref) instead of atomic64_add_return(1, &ref) to use optimized implementation and ease register pressure around the primitive for targets that implement optimized variant.
Cc: Steven Rostedt rostedt@goodmis.org Cc: Masami Hiramatsu mhiramat@kernel.org Cc: Mathieu Desnoyers mathieu.desnoyers@efficios.com Link: https://lore.kernel.org/20241007085651.48544-1-ubizjak@gmail.com Signed-off-by: Uros Bizjak ubizjak@gmail.com Signed-off-by: Steven Rostedt (Google) rostedt@goodmis.org Signed-off-by: Sasha Levin sashal@kernel.org --- kernel/trace/trace_clock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/trace/trace_clock.c b/kernel/trace/trace_clock.c index 4702efb00ff21..4cb2ebc439be6 100644 --- a/kernel/trace/trace_clock.c +++ b/kernel/trace/trace_clock.c @@ -154,5 +154,5 @@ static atomic64_t trace_counter; */ u64 notrace trace_clock_counter(void) { - return atomic64_add_return(1, &trace_counter); + return atomic64_inc_return(&trace_counter); }