tools/kvm_stat: document list of interactive commands

Apart from the source code, there does not seem to be a place that documents
the interactive capabilities of kvm_stat yet.

Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat
index 3e60d93870c027ce861adde055318b2fe4c8f2ad..aca85086be1e68d7a58faeae66f18a1884c0da8a 100755 (executable)
--- a/tools/kvm/kvm_stat/kvm_stat
+++ b/tools/kvm/kvm_stat/kvm_stat
@@ -1052,6 +1052,13 @@ Requirements:
   CAP_SYS_ADMIN and perf events are used.
 - CAP_SYS_RESOURCE if the hard limit is not high enough to allow
   the large number of files that are possibly opened.
+
+Interactive Commands:
+   f     filter by regular expression
+   p     filter by PID
+   q     quit
+   x     toggle reporting of stats for individual child trace events
+Press any other key to refresh statistics immediately.
 """
 
     class PlainHelpFormatter(optparse.IndentedHelpFormatter):

diff --git a/tools/kvm/kvm_stat/kvm_stat.txt b/tools/kvm/kvm_stat/kvm_stat.txt
index b92a153d7115c00bfbcf20b54858f2a1d79477d0..077bcc7e20dc83424e0371053d753b8d75a28c50 100644 (file)
--- a/tools/kvm/kvm_stat/kvm_stat.txt
+++ b/tools/kvm/kvm_stat/kvm_stat.txt
@@ -18,11 +18,27 @@ state transitions such as guest mode entry and exit.
 This tool is useful for observing guest behavior from the host perspective.
 Often conclusions about performance or buggy behavior can be drawn from the
 output.
+While running in regular mode, use any of the keys listed in section
+'Interactive Commands' below.
+Use batch and logging modes for scripting purposes.
 
 The set of KVM kernel module trace events may be specific to the kernel version
 or architecture.  It is best to check the KVM kernel module source code for the
 meaning of events.
 
+INTERACTIVE COMMANDS
+--------------------
+[horizontal]
+*f*::  filter by regular expression
+
+*p*::  filter by PID
+
+*q*::  quit
+
+*x*::  toggle reporting of stats for child trace events
+
+Press any other key to refresh statistics immediately.
+
 OPTIONS
 -------
 -1::