[PATCH] s390: channel path measurements

Gather extended measurements for channel paths from the channel subsystem and
expose them to userspace via a sysfs attribute.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index b6375861cb37..74a257b23383 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -1,6 +1,7 @@
 #ifndef _CSS_H
 #define _CSS_H
 
+#include <linux/mutex.h>
 #include <linux/wait.h>
 #include <linux/workqueue.h>
 
@@ -150,6 +151,11 @@ struct channel_subsystem {
         struct channel_path *chps[__MAX_CHPID + 1];
         struct device device;
         struct pgid global_pgid;
+        struct mutex mutex;
+        /* channel measurement related */
+        int cm_enabled;
+        void *cub_addr1;
+        void *cub_addr2;
 };
 #define to_css(dev) container_of(dev, struct channel_subsystem, device)