X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=README.md;h=4d72ed43d9c893d1bf6e2358d1a8f0b086412404;hp=22de252c1da06aba46c121b06324fec6cba82dd6;hb=6faa26cafc21ce8d5b8f20ae4d2682092fd74b03;hpb=8d12820e6a01d686c2fd135bbbef788991b5f445

diff --git a/README.md b/README.md
index 22de252c1..4d72ed43d 100644
--- a/README.md
+++ b/README.md
@@ -57,6 +57,8 @@ The following items are _optional_ dependencies:
     pages with the `--help` option or with the `lttng help` command.
     Note that without `man`, you cannot get offline help with
     LTTng-tools commands, not even their usage.
+  - **libpfm >= 4.0**: needed to run the perf regression test suite.
+    - Debian/Ubuntu package: `libpfm4-dev`
 
 LTTng-tools supports both the [LTTng Linux Kernel tracer](https://lttng.org)
 and [LTTng user space tracer](https://lttng.org) released as part of the same