linux-kernel - Re: [PATCH] acpi: glue: Update DBG macro to include KERN

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Date:	Tue, 18 Dec 2012 22:45:43 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Joe Perches <joe@...ches.com>
Cc:	Youquan Song <youquan.song@...el.com>, Len Brown <lenb@...nel.org>,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] acpi: glue: Update DBG macro to include KERN_DEBUG

On Monday, December 17, 2012 10:31:30 PM Joe Perches wrote:
> Currently these DBG statements are emitted at KERN_DEFAULT.
> Change the macro to emit at KERN_DEBUG.
> 
> This can help avoid unexpected message interleaving.

Applied to linux-pm.git/linux-next as v3.8 material.

Thanks,
Rafael


> Signed-off-by: Joe Perches <joe@...ches.com>
> ---
> 
> Another way to fix this message interleaving...
> 
>  drivers/acpi/glue.c |    9 +++++++--
>  1 files changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
> index 0155184..95af6f6 100644
> --- a/drivers/acpi/glue.c
> +++ b/drivers/acpi/glue.c
> @@ -18,9 +18,14 @@
>  
>  #define ACPI_GLUE_DEBUG	0
>  #if ACPI_GLUE_DEBUG
> -#define DBG(x...) printk(PREFIX x)
> +#define DBG(fmt, ...)						\
> +	printk(KERN_DEBUG PREFIX fmt, ##__VA_ARGS__)
>  #else
> -#define DBG(x...) do { } while(0)
> +#define DBG(fmt, ...)						\
> +do {								\
> +	if (0)							\
> +		printk(KERN_DEBUG PREFIX fmt, ##__VA_ARGS__);	\
> +} while (0)
>  #endif
>  static LIST_HEAD(bus_type_list);
>  static DECLARE_RWSEM(bus_type_sem);
> 
-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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