vmw_balloon: add reset stat

It is useful to expose how many times the balloon resets. If it happens
more than very rarely - this is an indication for a problem.

Reviewed-by: Xavier Deguillard <xdeguillard@vmware.com>
Signed-off-by: Nadav Amit <namit@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c
index 99a831ea82c0e9fdf91c7483172ce446673be3c4..9b0b3fa4f8367c421abb1e58e3bf7b5e82b16aeb 100644 (file)
--- a/drivers/misc/vmw_balloon.c
+++ b/drivers/misc/vmw_balloon.c
@@ -218,7 +218,8 @@ enum vmballoon_stat_page {
 enum vmballoon_stat_general {
        VMW_BALLOON_STAT_TIMER,
        VMW_BALLOON_STAT_DOORBELL,
-       VMW_BALLOON_STAT_LAST = VMW_BALLOON_STAT_DOORBELL
+       VMW_BALLOON_STAT_RESET,
+       VMW_BALLOON_STAT_LAST = VMW_BALLOON_STAT_RESET
 };
 
 #define VMW_BALLOON_STAT_NUM           (VMW_BALLOON_STAT_LAST + 1)
@@ -1303,6 +1304,7 @@ static void vmballoon_reset(struct vmballoon *b)
                vmballoon_deinit_batching(b);
        }
 
+       vmballoon_stats_gen_inc(b, VMW_BALLOON_STAT_RESET);
        b->reset_required = false;
 
        error = vmballoon_vmci_init(b);
@@ -1380,7 +1382,8 @@ static const char * const vmballoon_stat_page_names[] = {
 
 static const char * const vmballoon_stat_names[] = {
        [VMW_BALLOON_STAT_TIMER]                = "timer",
-       [VMW_BALLOON_STAT_DOORBELL]             = "doorbell"
+       [VMW_BALLOON_STAT_DOORBELL]             = "doorbell",
+       [VMW_BALLOON_STAT_RESET]                = "reset",
 };
 
 static int vmballoon_enable_stats(struct vmballoon *b)