Document LTTNG_UST_DEBUG_VALGRIND compilation flag

[lttng-ust.git] / README

diff --git a/README b/README
index ad9acd77b5664753b5947d5fe9c4c2a3ffa1f73c..78160a30f8210e0cdb9e8e6e8483aa3a6204e117 100644 (file)
--- a/README
+++ b/README
@@ -113,6 +113,10 @@ ENVIRONMENT VARIABLES:
     recommended for applications with time constraints on the process
     startup time.
 
+  - The compilation flag "-DLTTNG_UST_DEBUG_VALGRIND" should be enabled
+    at build time to allow liblttng-ust to be used with valgrind
+    (side-effect: disables per-cpu buffering).
+
 
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