From c9f69f7b25975baecdaf5f399d3be81cef162dc8 Mon Sep 17 00:00:00 2001
From: Sergey Yagovtsev <yse.sey@gmail.com>
Date: Wed, 1 Mar 2017 13:20:51 +0300
Subject: [PATCH] Update README.md

---
 README.md | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/README.md b/README.md
index 112de32..2772242 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@
     - [Collect blocks](#collect-blocks)
         - [Collect via network](#collect-via-network)
         - [Collect via file](#collect-via-file)
+        - [Note about context-switch](#note-about-context-switch)
 4. [Build](#build)
     - [Linux](#linux)
     - [Windows](#windows)
@@ -151,6 +152,17 @@ int main()
 }
 ```
 
+### Note about context-switch
+
+To capture a thread context-switch event you need:
+
+- On Windows: run profiling application "as administrator"
+- On linux: you can run special `systemtap` script with root privileges as follow (example on Fedora):
+```bash
+#stap -o /tmp/cs_profiling_info.log scripts/context_switch_logger.stp name APPLICATION_NAME
+```
+APPLICATION_NAME - name of profiling application
+
 # Build
 
 ## Prerequisites