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Re: [Xen-devel] [PATCH v2] xen-scsiback: use DRV_PFX in the pr macros and DPRINTK



On Wed, 2015-03-04 at 18:32 +0000, Tao Chen wrote:
> Defined the string of {xen-pvscsi: } as DRV_PFX, then use it in the pr 
> sentences and DPRINTK.
> Also fixed up some comments just as eliminate redundant white spaces and 
> format the code.
> These will make the code easier to read.

It'd probaby be better just to use pr_fmt
before any include and remove all the DRV_PRV uses

#define pr_fmt(fmt) "xen-pvscsi: " fmt

> diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c
[]
> @@ -69,8 +69,10 @@
>  #include <xen/interface/grant_table.h>
>  #include <xen/interface/io/vscsiif.h>
>  
> +#define DRV_PFX "xen-pvscsi: "
>  #define DPRINTK(_f, _a...)                   \
> -     pr_debug("(file=%s, line=%d) " _f, __FILE__ , __LINE__ , ## _a)
> +     pr_debug(DRV_PFX "(file=%s, line=%d) " _f,      \
> +                     __FILE__ , __LINE__ , ## _a)

I'd also remove DPRINTK and just use pr_debug directly
as dynamic_debug can emit file and line as desired.

> @@ -84,7 +86,7 @@ struct ids_tuple {
>  
>  struct v2p_entry {
>       struct ids_tuple v;             /* translate from */
> -     struct scsiback_tpg *tpg;       /* translate to   */
> +     struct scsiback_tpg *tpg;       /* translate to */

superfluous change.



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