Re: [PATCH 1/1] xen-blkback: Change statistics counter types tounsigned

[Konrad Rzeszutek Wilk]

On Tue, Mar 05, 2013 at 05:59:32PM +0000, Zoltan Kiss wrote:
> These values shouldn't be negative, but after an overflow their value
> can turn into negative, if they are signed. xentop can show bogus
> values in this case.

I get this during compilation:

/home/konrad/linux/drivers/block/xen-blkback/xenbus.c: In function âshow_oo_reqâ:
/home/konrad/linux/drivers/block/xen-blkback/xenbus.c:233: warning: format â%dâ expects type âintâ, but argument 3 has type âlong long unsigned intâ
/home/konrad/linux/drivers/block/xen-blkback/xenbus.c: In function âshow_rd_reqâ:
/home/konrad/linux/drivers/block/xen-blkback/xenbus.c:234: warning: format â%dâ expects type âintâ, but argument 3 has type âlong long unsigned intâ
/home/konrad/linux/drivers/block/xen-blkback/xenbus.c: In function âshow_wr_reqâ:
/home/konrad/linux/drivers/block/xen-blkback/xenbus.c:235: warning: format â%dâ expects type âintâ, but argument 3 has type âlong long unsigned intâ
/home/konrad/linux/drivers/block/xen-blkback/xenbus.c: In function âshow_f_reqâ:
/home/konrad/linux/drivers/block/xen-blkback/xenbus.c:236: warning: format â%dâ expects type âintâ, but argument 3 has type âlong long unsigned intâ
/home/konrad/linux/drivers/block/xen-blkback/xenbus.c: In function âshow_ds_reqâ:
/home/konrad/linux/drivers/block/xen-blkback/xenbus.c:237: warning: format â%dâ expects type âintâ, but argument 3 has type âlong long unsigned intâ
/home/konrad/linux/drivers/block/xen-blkback/xenbus.c: In function âshow_rd_sectâ:
/home/konrad/linux/drivers/block/xen-blkback/xenbus.c:238: warning: format â%dâ expects type âintâ, but argument 3 has type âlong long unsigned intâ
/home/konrad/linux/drivers/block/xen-blkback/xenbus.c: In function âshow_wr_sectâ:
/home/konrad/linux/drivers/block/xen-blkback/xenbus.c:239: warning: format â%dâ expects type âintâ, but argument 3 has type âlong long unsigned intâ
  CC      block/bsg-lib.o
  CC      mm/dmapool.o
  CC      kernel/debug/debug_core.o
  CC      mm/hugetlb.o
  CC      mm/mempolicy.o
  CC      drivers/acpi/sleep.o
/home/konrad/linux/drivers/block/xen-blkback/blkback.c: In function âprint_statsâ:
/home/konrad/linux/drivers/block/xen-blkback/blkback.c:384: warning: format â%3dâ expects type âintâ, but argument 3 has type âlong long unsigned intâ
/home/konrad/linux/drivers/block/xen-blkback/blkback.c:384: warning: format â%4dâ expects type âintâ, but argument 4 has type âlong long unsigned intâ
/home/konrad/linux/drivers/block/xen-blkback/blkback.c:384: warning: format â%4dâ expects type âintâ, but argument 5 has type âlo

Could you fix it up please as one big patch if possible?

> 
> Signed-off-by: Zoltan Kiss <zoltan.kiss@xxxxxxxxxx>
> Reported-by: Ichiro Ogino <ichiro.ogino@xxxxxxxxxxxx>
> ---
>  drivers/block/xen-blkback/common.h |   14 +++++++-------
>  1 files changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h
> index 6072390..72d09ac 100644
> --- a/drivers/block/xen-blkback/common.h
> +++ b/drivers/block/xen-blkback/common.h
> @@ -208,13 +208,13 @@ struct xen_blkif {
>  
>  	/* statistics */
>  	unsigned long		st_print;
> -	int			st_rd_req;
> -	int			st_wr_req;
> -	int			st_oo_req;
> -	int			st_f_req;
> -	int			st_ds_req;
> -	int			st_rd_sect;
> -	int			st_wr_sect;
> +	unsigned long long			st_rd_req;
> +	unsigned long long			st_wr_req;
> +	unsigned long long			st_oo_req;
> +	unsigned long long			st_f_req;
> +	unsigned long long			st_ds_req;
> +	unsigned long long			st_rd_sect;
> +	unsigned long long			st_wr_sect;
>  
>  	wait_queue_head_t	waiting_to_free;
>  };
> -- 
> 1.7.0.4
> 
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