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From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Uros Bizjak <ubizjak@gmail.com>
Subject: [for-next][PATCH 10/10] tracing: Use atomic64_inc_return() in trace_clock_counter()
Date: Thu, 10 Oct 2024 10:25:47 -0400	[thread overview]
Message-ID: <20241010142551.130902358@goodmis.org> (raw)
In-Reply-To: 20241010142537.255433162@goodmis.org

From: Uros Bizjak <ubizjak@gmail.com>

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>
---
 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 4702efb00ff2..4cb2ebc439be 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);
 }
-- 
2.45.2



      parent reply	other threads:[~2024-10-10 14:25 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-10-10 14:25 [for-next][PATCH 00/10] tracing: Updates for 6.13 Steven Rostedt
2024-10-10 14:25 ` [for-next][PATCH 01/10] tracing: Declare system call tracepoints with TRACE_EVENT_SYSCALL Steven Rostedt
2024-10-10 14:25 ` [for-next][PATCH 02/10] tracing/ftrace: disable preemption in syscall probe Steven Rostedt
2024-10-10 14:25 ` [for-next][PATCH 03/10] tracing/perf: " Steven Rostedt
2024-10-10 14:25 ` [for-next][PATCH 04/10] tracing/bpf: " Steven Rostedt
2024-10-10 14:25 ` [for-next][PATCH 05/10] tracing: Allow system call tracepoints to handle page faults Steven Rostedt
2024-10-10 14:25 ` [for-next][PATCH 06/10] tracing/ftrace: Add might_fault check to syscall probes Steven Rostedt
2024-10-10 14:25 ` [for-next][PATCH 07/10] tracing/perf: " Steven Rostedt
2024-10-10 14:25 ` [for-next][PATCH 08/10] tracing/bpf: " Steven Rostedt
2024-10-10 14:25 ` [for-next][PATCH 09/10] trace/trace_event_perf: remove duplicate samples on the first tracepoint event Steven Rostedt
2024-10-10 14:25 ` Steven Rostedt [this message]

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