tools: Add kvm_stat man page

Converted from the Texinfo source in QEMU to asciidoc.  The a2x
incantation was provided by Janosch Frank.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2 files changed, 99 insertions, 2 deletions

diff --git a/tools/kvm/kvm_stat/Makefile b/tools/kvm/kvm_stat/Makefile
index c639b8d30688..5b1cba57e3b3 100644
--- a/tools/kvm/kvm_stat/Makefile
+++ b/tools/kvm/kvm_stat/Makefile
@@ -1,5 +1,41 @@
+include ../../scripts/Makefile.include
+include ../../scripts/utilities.mak
 BINDIR=usr/bin
+MANDIR=usr/share/man
+MAN1DIR=$(MANDIR)/man1
 
-install:
-        mkdir -p $(INSTALL_ROOT)/$(BINDIR)
+MAN1=kvm_stat.1
+
+A2X=a2x
+a2x_path := $(call get-executable,$(A2X))
+
+all: man
+
+ifneq ($(findstring $(MAKEFLAGS),s),s)
+  ifneq ($(V),1)
+     QUIET_A2X = @echo '  A2X     '$@;
+  endif
+endif
+
+%.1: %.txt
+ifeq ($(a2x_path),)
+        $(error "You need to install asciidoc for man pages")
+else
+        $(QUIET_A2X)$(A2X) --doctype manpage --format manpage $<
+endif
+
+clean:
+        rm -f $(MAN1)
+
+man: $(MAN1)
+
+install-man: man
+        install -d -m 755 $(INSTALL_ROOT)/$(MAN1DIR)
+        install -m 644 kvm_stat.1 $(INSTALL_ROOT)/$(MAN1DIR)
+
+install-tools:
+        install -d -m 755 $(INSTALL_ROOT)/$(BINDIR)
         install -m 755 -p "kvm_stat" "$(INSTALL_ROOT)/$(BINDIR)/$(TARGET)"
+
+install: install-tools install-man
+.PHONY: all clean man install-tools install-man install
diff --git a/tools/kvm/kvm_stat/kvm_stat.txt b/tools/kvm/kvm_stat/kvm_stat.txt
new file mode 100644
index 000000000000..8dcb48aaca50
--- /dev/null
+++ b/tools/kvm/kvm_stat/kvm_stat.txt
@@ -0,0 +1,61 @@
+kvm_stat(1)
+===========
+
+NAME
+----
+kvm_stat - Report KVM kernel module event counters
+
+SYNOPSIS
+--------
+[verse]
+'kvm_stat' [OPTION]...
+
+DESCRIPTION
+-----------
+kvm_stat prints counts of KVM kernel module trace events.  These events signify
+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.
+
+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.
+
+Note that trace events are counted globally across all running guests.
+
+OPTIONS
+-------
+-1::
+--once::
+--batch::
+        run in batch mode for one second
+
+-l::
+--log::
+        run in logging mode (like vmstat)
+
+-t::
+--tracepoints::
+        retrieve statistics from tracepoints
+
+-d::
+--debugfs::
+        retrieve statistics from debugfs
+
+-f<fields>::
+--fields=<fields>::
+        fields to display (regex)
+
+-h::
+--help::
+        show help message
+
+SEE ALSO
+--------
+'perf'(1), 'trace-cmd'(1)
+
+AUTHOR
+------
+Stefan Hajnoczi <stefanha@redhat.com>