kvm tools: Provide instance name when running 'kvm pause'

Instead of sending a signal to the first instance found, send it
to a specific instance.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

diff --git a/tools/kvm/kvm-pause.c b/tools/kvm/kvm-pause.c
index fdf871408386e201f5119b11ff4d988ba8438985..0cb6f2908c9115d46d58e5057411383d2bc6f1dc 100644 (file)
--- a/tools/kvm/kvm-pause.c
+++ b/tools/kvm/kvm-pause.c
@@ -5,9 +5,18 @@
 #include <kvm/util.h>
 #include <kvm/kvm-cmd.h>
 #include <kvm/kvm-pause.h>
+#include <kvm/kvm.h>
 
 int kvm_cmd_pause(int argc, const char **argv, const char *prefix)
 {
-       signal(SIGUSR2, SIG_IGN);
-       return system("kill -USR2 $(pidof kvm)");
+       int pid;
+
+       if (argc != 1)
+               die("Usage: kvm debug [instance name]\n");
+
+       pid = kvm__get_pid_by_instance(argv[0]);
+       if (pid < 0)
+               die("Failed locating instance name");
+
+       return kill(pid, SIGUSR2);
 }