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authorDean Michael Berris <dberris@google.com>2017-12-13 06:37:13 +0000
committerDean Michael Berris <dberris@google.com>2017-12-13 06:37:13 +0000
commit69956ecc2190003316f5384cef8508665cbd4b9f (patch)
tree6e4100ed60b6d8b002088c22acca27efd529ffb9 /docs
parent88e328af9dc04f4fcf25b3a0b60d076be3a705d7 (diff)
[XRay][compiler-rt] Reduce XRay log spam
This change makes XRay print the log file output only when the verbosity level is higher than 0. It reduces the log spam in the default case when we want XRay running silently, except when there are actual fatal/serious errors. We also update the documentation to show how to get the information after the change to the default behaviour. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320550 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs')
-rw-r--r--docs/XRay.rst3
-rw-r--r--docs/XRayExample.rst2
2 files changed, 4 insertions, 1 deletions
diff --git a/docs/XRay.rst b/docs/XRay.rst
index 942b479af74..ebf02567830 100644
--- a/docs/XRay.rst
+++ b/docs/XRay.rst
@@ -164,6 +164,9 @@ variable, where we list down the options and their defaults below.
| | | | Data Recorder |
| | | | (FDR) mode. |
+-------------------+-----------------+---------------+------------------------+
+| verbosity | ``int`` | ``0`` | Runtime verbosity |
+| | | | level. |
++-------------------+-----------------+---------------+------------------------+
If you choose to not use the default logging implementation that comes with the
diff --git a/docs/XRayExample.rst b/docs/XRayExample.rst
index 9f74442bceb..f8e7d943fed 100644
--- a/docs/XRayExample.rst
+++ b/docs/XRayExample.rst
@@ -60,7 +60,7 @@ to enable XRay at application start. To do this, XRay checks the
$ ./bin/llc input.ll
# We need to set the XRAY_OPTIONS to enable some features.
- $ XRAY_OPTIONS="patch_premain=true xray_mode=xray-basic" ./bin/llc input.ll
+ $ XRAY_OPTIONS="patch_premain=true xray_mode=xray-basic verbosity=1" ./bin/llc input.ll
==69819==XRay: Log file in 'xray-log.llc.m35qPB'
At this point we now have an XRay trace we can start analysing.