From nobody Sat Feb 7 23:23:41 2026 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 E2ACA338F26; Fri, 6 Feb 2026 19:58:56 +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=1770407937; cv=none; b=oBFWvkxISp+IaiIT7w9lsIKbGRO5zrryzGRCPRvShSkHLVBBZDtzI3F/LhFV2FcLRXM/gKBfjdjVdQGHHHQpfscpQNygN3Br8dODIN9uKOEZGbPdn6zBIrbmy8C38466KHSOEuDhXfCLgOt1ficqJWAm9TwuF1CaWG1OQKkB+n4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770407937; c=relaxed/simple; bh=v7tx0fb8mN8IPP3PDF9fvTs6sEupxknIdsg9SHi8S4s=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=pT7hNl35m7SLQnb+Np9ty5HdWRWvlS6LS8u0DpTLw6GmioKcY8QVwHN7XvIpeBZuGR9AFvvelAED67Rj6+UMnGDOv3rsNNJn4Fn3fMrmt6lWckl9LhGykhM5gRU2rZkweIaP51asIy8xJnK9XnskUlQCspd28YZaTm7GR7+Sj6M= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Mr+RBO/G; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Mr+RBO/G" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B96B9C19424; Fri, 6 Feb 2026 19:58:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1770407936; bh=v7tx0fb8mN8IPP3PDF9fvTs6sEupxknIdsg9SHi8S4s=; h=Date:From:To:Cc:Subject:References:From; b=Mr+RBO/GiZkNnYqVwI+jC5uXYnMQKyhzb14ajjazViUfOICHIUeYn64qwIj5fLc/Q HhaMRicu/uiEFm6moZbZPW7GJ5DEbdRKw6nKJUIsvlR0oqbuRT1YfQk94rgZXvzhwF Ym3yE5Tfg1rD2T/JW7QgSbUvdhuXZYFyPpoK84F+ChIGu+Dq23TEtcpGuSgqTpdbIL sLFR3ICBhLN63u3XhRMa1SGWzgjMEjEjdp9sh8xGDPJyXWZ9DfUmyLg89shmmh9peL CdPnalnAor3oSCsXXhZqRjnpOiXHZ5Mg/t5if2hnpsYv/sDqRFA1vI9cHeOpfs9ZtF cyXVRJe+j9ScQ== Received: from rostedt by gandalf with local (Exim 4.99.1) (envelope-from ) id 1voRzL-0000000A6oi-3ufd; Fri, 06 Feb 2026 14:59:35 -0500 Message-ID: <20260206195935.791669128@kernel.org> User-Agent: quilt/0.68 Date: Fri, 06 Feb 2026 14:37:47 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton Subject: [PATCH 06/12] tracing: Make tracing_update_buffers() take NULL for global_trace References: <20260206193741.767171392@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Steven Rostedt The trace.c file has become a dumping ground for all tracing code and has become quite large. In order to move the trace_printk functions out of it these functions can not access global_trace directly, as that is something that needs to stay static in trace.c. Have tracing_update_buffers() take NULL for its trace_array to denote it should work on the global_trace top level trace_array allows that function to be used outside of trace.c and still update the global_trace trace_array. Signed-off-by: Steven Rostedt (Google) --- kernel/trace/trace.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 1170fcf686a6..a68948ac8bf9 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -3236,7 +3236,7 @@ void trace_printk_init_buffers(void) pr_warn("**********************************************************\n"); =20 /* Expand the buffers to set size */ - if (tracing_update_buffers(&global_trace) < 0) + if (tracing_update_buffers(NULL) < 0) pr_err("Failed to expand tracing buffers for trace_printk() calls\n"); else buffers_allocated =3D 1; @@ -6188,6 +6188,9 @@ int tracing_update_buffers(struct trace_array *tr) { int ret =3D 0; =20 + if (!tr) + tr =3D &global_trace; + guard(mutex)(&trace_types_lock); =20 update_last_data(tr); --=20 2.51.0