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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>
This commit is contained in:
Nadav Amit 2018-09-20 10:30:20 -07:00 committed by Greg Kroah-Hartman
parent 22d293ee8d
commit 8840a6f4a7
1 changed files with 5 additions and 2 deletions
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7
drivers/misc/vmw_balloon.c
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@ -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)