From patchwork Thu Jul 14 16:43:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Rostedt X-Patchwork-Id: 590761 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CCC95CCA486 for ; Thu, 14 Jul 2022 16:43:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239336AbiGNQnr (ORCPT ); Thu, 14 Jul 2022 12:43:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38394 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238159AbiGNQnl (ORCPT ); Thu, 14 Jul 2022 12:43:41 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0915FFF9; Thu, 14 Jul 2022 09:43:37 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 694E862070; Thu, 14 Jul 2022 16:43:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 44406C341C8; Thu, 14 Jul 2022 16:43:31 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.95) (envelope-from ) id 1oC1w2-004lRQ-9V; Thu, 14 Jul 2022 12:43:30 -0400 Message-ID: <20220714164330.126593909@goodmis.org> User-Agent: quilt/0.66 Date: Thu, 14 Jul 2022 12:43:08 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , Mathias Nyman , Greg Kroah-Hartman , linux-usb@vger.kernel.org Subject: [for-next][PATCH 12/23] xhci: tracing: Use the new __vstring() helper References: <20220714164256.403842845@goodmis.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: "Steven Rostedt (Google)" Instead of open coding a __dynamic_array() with a fixed length (which defeats the purpose of the dynamic array in the first place). Use the new __vstring() helper that will use a va_list and only write enough of the string into the ring buffer that is needed. Link: https://lkml.kernel.org/r/20220705224750.172301548@goodmis.org Cc: Mathias Nyman Cc: Ingo Molnar Cc: Andrew Morton Cc: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org Signed-off-by: Steven Rostedt (Google) --- drivers/usb/host/xhci-trace.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h index a5da02077297..61e93a3540a7 100644 --- a/drivers/usb/host/xhci-trace.h +++ b/drivers/usb/host/xhci-trace.h @@ -28,9 +28,9 @@ DECLARE_EVENT_CLASS(xhci_log_msg, TP_PROTO(struct va_format *vaf), TP_ARGS(vaf), - TP_STRUCT__entry(__dynamic_array(char, msg, XHCI_MSG_MAX)), + TP_STRUCT__entry(__vstring(msg, vaf->fmt, vaf->va)), TP_fast_assign( - vsnprintf(__get_str(msg), XHCI_MSG_MAX, vaf->fmt, *vaf->va); + __assign_vstr(msg, vaf->fmt, vaf->va); ), TP_printk("%s", __get_str(msg)) );