funcslower: Add to README.md

README.md

@@ -102,6 +102,7 @@ pair of .c and .py files, and some are directories of files.
 - tools/[filetop](tools/filetop.py): File reads and writes by filename and process. Top for files. [Examples](tools/filetop_example.txt).
 - tools/[funccount](tools/funccount.py): Count kernel function calls. [Examples](tools/funccount_example.txt).
 - tools/[funclatency](tools/funclatency.py): Time functions and show their latency distribution. [Examples](tools/funclatency_example.txt).
+- tools/[funcslower](tools/funcslower.py): Trace slow kernel or user function calls. [Examples](tools/funcslower_example.txt).
 - tools/[gethostlatency](tools/gethostlatency.py): Show latency for getaddrinfo/gethostbyname[2] calls. [Examples](tools/gethostlatency_example.txt).
 - tools/[hardirqs](tools/hardirqs.py):  Measure hard IRQ (hard interrupt) event time. [Examples](tools/hardirqs_example.txt).
 - tools/[killsnoop](tools/killsnoop.py): Trace signals issued by the kill() syscall. [Examples](tools/killsnoop_example.txt).