From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39289) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c4Axo-0000z6-QL for qemu-devel@nongnu.org; Tue, 08 Nov 2016 13:17:41 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c4Axl-0001rt-T2 for qemu-devel@nongnu.org; Tue, 08 Nov 2016 13:17:40 -0500 Received: from mx1.redhat.com ([209.132.183.28]:54182) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1c4Axl-0001ro-Ng for qemu-devel@nongnu.org; Tue, 08 Nov 2016 13:17:37 -0500 From: Stefan Hajnoczi Date: Tue, 8 Nov 2016 18:17:33 +0000 Message-Id: <1478629053-31709-2-git-send-email-stefanha@redhat.com> In-Reply-To: <1478629053-31709-1-git-send-email-stefanha@redhat.com> References: <1478629053-31709-1-git-send-email-stefanha@redhat.com> Subject: [Qemu-devel] [PULL 1/1] docs/tracing.txt: Update documentation of default backend List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Peter Maydell , Stefan Hajnoczi From: Peter Maydell In commit baf86d6b3c we switched the default trace backend from "nop" to "log". Update the documentation to match. Signed-off-by: Peter Maydell Message-id: 1478276837-31780-1-git-send-email-peter.maydell@linaro.org Signed-off-by: Stefan Hajnoczi --- docs/tracing.txt | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/docs/tracing.txt b/docs/tracing.txt index e62444c..f351998a 100644 --- a/docs/tracing.txt +++ b/docs/tracing.txt @@ -150,13 +150,16 @@ The trace backends are chosen at configure time: For a list of supported trace backends, try ./configure --help or see below. If multiple backends are enabled, the trace is sent to them all. +If no backends are explicitly selected, configure will default to the +"log" backend. + The following subsections describe the supported trace backends. === Nop === The "nop" backend generates empty trace event functions so that the compiler -can optimize out trace events completely. This is the default and imposes no -performance penalty. +can optimize out trace events completely. This imposes no performance +penalty. Note that regardless of the selected trace backend, events with the "disable" property will be generated with the "nop" backend. -- 2.7.4