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author | Stefan Hajnoczi <stefanha@redhat.com> | 2016-11-09 12:44:16 +0000 |
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committer | Stefan Hajnoczi <stefanha@redhat.com> | 2016-11-09 12:44:16 +0000 |
commit | 9b4b0350264d8164996265d635c8b9599673afb4 (patch) | |
tree | 40efd0c35bddfe9562cf64e07e70e551b63c44ea | |
parent | f70073df4a562efafc2e245515837fba673efb3d (diff) | |
parent | 3b0fc80dd8ed9bd1ac738898e4fbd70c4a618925 (diff) |
Merge remote-tracking branch 'public/tags/tracing-pull-request' into staging
# gpg: Signature made Tue 08 Nov 2016 06:17:13 PM GMT
# gpg: using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
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* public/tags/tracing-pull-request:
docs/tracing.txt: Update documentation of default backend
Message-id: 1478629053-31709-1-git-send-email-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
-rw-r--r-- | docs/tracing.txt | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/docs/tracing.txt b/docs/tracing.txt index e62444ca68..f351998a4e 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. |