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tracing: Use atomic64_inc_return() in trace_clock_counter()

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[ Upstream commit eb887c4567 ]

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>
This commit is contained in:
Uros Bizjak 2024-10-07 10:56:28 +02:00 committed by Greg Kroah-Hartman
parent 7ba5168843
commit 02cef97205
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/trace_clock.c
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@ -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);
}