From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7F4BB22331E; Thu, 12 Dec 2024 17:09:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734023396; cv=none; b=oK/9ah2oqeE9ZZXjLY+LvqMqzQpaggaNcShMv8b0zpfXuJU5J19t1WGZ/sDrYWdGGn7NiBRX8YcWQ9yTy2OsP80xjtbBMRCy5o3O6DXDMqIjFd1PwiWUIkrs/gNZ3WwjRduIJyCJoXQruaJ0XzrDRyWLFY5rpwaVjs/EDC80yic= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734023396; c=relaxed/simple; bh=lfS4xdA6cuMAL4OJ3227DnOk94dJ86ZT0MZinFDFpK0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HS2n5vI72dMpF37OlWGn6NwMkAI16dyL9/0xRUjwnn05V+eKVkoaFy9Nlvk4LFwINYpnjK+X0t0kJ+72Ugujkd/h53IWuKtg1rkT87UKEpArEt/SsVxSArvroD86MPW7+wWQjdP3LNPex474nn3CVtNmmfcbz72NqQdadXc4vkQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=eGDXBwwY; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="eGDXBwwY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 058CDC4CECE; Thu, 12 Dec 2024 17:09:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1734023396; bh=lfS4xdA6cuMAL4OJ3227DnOk94dJ86ZT0MZinFDFpK0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eGDXBwwY2/AuBkSGBEAAnV/bIvk+z0nZPMthygO/sjvtNSoAKjOobxiuKuKjr4He7 yLjIR5FTzycaDYSrXpTOaO7ebdLusrfX9rMmgdS4WnBWmRrQamhv6SeEoXIm880bjm 8kBpPasJsjKuo6hlh8jc3LRWZTic+vWz5I1t/bZE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Uros Bizjak , Sasha Levin Subject: [PATCH 5.15 513/565] tracing: Use atomic64_inc_return() in trace_clock_counter() Date: Thu, 12 Dec 2024 16:01:48 +0100 Message-ID: <20241212144332.058645687@linuxfoundation.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241212144311.432886635@linuxfoundation.org> References: <20241212144311.432886635@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Uros Bizjak [ 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 Cc: Masami Hiramatsu Cc: Mathieu Desnoyers Link: https://lore.kernel.org/20241007085651.48544-1-ubizjak@gmail.com Signed-off-by: Uros Bizjak Signed-off-by: Steven Rostedt (Google) Signed-off-by: Sasha Levin --- 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); } -- 2.43.0