From 24e7dbbaf22da7de18276423e09a077bdf3a299d Mon Sep 17 00:00:00 2001
From: Sasha Levin <levinsasha928@gmail.com>
Date: Sun, 3 Jul 2011 18:38:10 +0300
Subject: [PATCH] kvm tools: Allow pausing and debugging all running instances

Add a 'kvm [debug,pause] all' command to allow pausing or debugging
all running guests on a host.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
---
 kvm-debug.c | 10 ++++++++++
 kvm-pause.c | 10 ++++++++++
 2 files changed, 20 insertions(+)

diff --git a/kvm-debug.c b/kvm-debug.c
index 432ae84..676f311 100644
--- a/kvm-debug.c
+++ b/kvm-debug.c
@@ -7,6 +7,11 @@
 #include <string.h>
 #include <signal.h>
 
+static void do_debug(const char *name, int pid)
+{
+	kill(pid, SIGQUIT);
+}
+
 int kvm_cmd_debug(int argc, const char **argv, const char *prefix)
 {
 	int pid;
@@ -14,6 +19,11 @@ int kvm_cmd_debug(int argc, const char **argv, const char *prefix)
 	if (argc != 1)
 		die("Usage: kvm debug [instance name]\n");
 
+	if (strcmp(argv[0], "all") == 0) {
+		kvm__enumerate_instances(do_debug);
+		return 0;
+	}
+
 	pid = kvm__get_pid_by_instance(argv[0]);
 	if (pid < 0)
 		die("Failed locating instance name");
diff --git a/kvm-pause.c b/kvm-pause.c
index 0cb6f29..ea4f95d 100644
--- a/kvm-pause.c
+++ b/kvm-pause.c
@@ -7,6 +7,11 @@
 #include <kvm/kvm-pause.h>
 #include <kvm/kvm.h>
 
+static void do_pause(const char *name, int pid)
+{
+	kill(pid, SIGUSR2);
+}
+
 int kvm_cmd_pause(int argc, const char **argv, const char *prefix)
 {
 	int pid;
@@ -14,6 +19,11 @@ int kvm_cmd_pause(int argc, const char **argv, const char *prefix)
 	if (argc != 1)
 		die("Usage: kvm debug [instance name]\n");
 
+	if (strcmp(argv[0], "all") == 0) {
+		kvm__enumerate_instances(do_pause);
+		return 0;
+	}
+
 	pid = kvm__get_pid_by_instance(argv[0]);
 	if (pid < 0)
 		die("Failed locating instance name");