From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60264) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c2hKy-0007Xb-W7 for qemu-devel@nongnu.org; Fri, 04 Nov 2016 12:27:29 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c2hKy-0002EP-4L for qemu-devel@nongnu.org; Fri, 04 Nov 2016 12:27:28 -0400 Received: from orth.archaic.org.uk ([2001:8b0:1d0::2]:47483) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1c2hKx-00025t-UQ for qemu-devel@nongnu.org; Fri, 04 Nov 2016 12:27:28 -0400 From: Peter Maydell Date: Fri, 4 Nov 2016 16:27:17 +0000 Message-Id: <1478276837-31780-1-git-send-email-peter.maydell@linaro.org> Subject: [Qemu-devel] [PATCH] 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: patches@linaro.org, Stefan Hajnoczi In commit baf86d6b3c we switched the default trace backend from "nop" to "log". Update the documentation to match. Signed-off-by: Peter Maydell --- 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