linux-kernel - Re: [PATCH 1/4] Adds mtrr_save_fixed_ranges() for use in two later patches.

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Message-Id: <20070413091358.cf8c426e.randy.dunlap@oracle.com>
Date:	Fri, 13 Apr 2007 09:13:58 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Bernhard Kaindl <bk@...e.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Andi Kleen <ak@...e.de>,
	Dave Jones <davej@...emonkey.org.uk>
Subject: Re: [PATCH 1/4] Adds mtrr_save_fixed_ranges() for use in two later
 patches.

On Fri, 13 Apr 2007 17:50:50 +0200 (CEST) Bernhard Kaindl wrote:

> ---
>  arch/i386/kernel/cpu/mtrr/generic.c |   16 +++++++++++++++-
>  include/asm-i386/mtrr.h             |    2 ++
>  include/asm-x86_64/proto.h          |    2 ++
>  3 files changed, 19 insertions(+), 1 deletion(-)
> 
> Index: 2.6.21-rc6-mm1/arch/i386/kernel/cpu/mtrr/generic.c
> ===================================================================
> --- 2.6.21-rc6-mm1.orig/arch/i386/kernel/cpu/mtrr/generic.c
> +++ 2.6.21-rc6-mm1/arch/i386/kernel/cpu/mtrr/generic.c
> @@ -37,7 +37,11 @@ get_mtrr_var_range(unsigned int index, s
>  	rdmsr(MTRRphysMask_MSR(index), vr->mask_lo, vr->mask_hi);
>  }
> 
> -static void __cpuinit
> +/**
> + * Retrieves the current fixed-range MTRRs from the current CPU
> + * \param frs address where to write the current MTRR contents
> + */

Please use correct kernel-doc notation.
See Documentation/kernel-doc-nano-HOWTO.txt for details.

Briefly:  "/**" begins a kernel-doc comment block.
Next line is "function short description" (when it's a function).
Parameters are referred to as @param, not \param.

Please check the entire patch series for this.

> +static void
>  get_fixed_ranges(mtrr_type * frs)
>  {
>  	unsigned int *p = (unsigned int *) frs;
> @@ -51,6 +55,16 @@ get_fixed_ranges(mtrr_type * frs)
>  		rdmsr(MTRRfix4K_C0000_MSR + i, p[6 + i * 2], p[7 + i * 2]);
>  }
> 
> +/**
> + * Updates our copy of the state of the fixed-range MTRR values
> + * with the current fixed-range MTRR contents from the current CPU
> + * \param info dummy needed for use by smp_call_function_single()
> + */
> +void mtrr_save_fixed_ranges(void *info)
> +{
> +	get_fixed_ranges(mtrr_state.fixed_ranges);
> +}
> +
>  static void __cpuinit print_fixed(unsigned base, unsigned step, const mtrr_type*types)
>  {
>  	unsigned i;
> Index: 2.6.21-rc6-mm1/include/asm-i386/mtrr.h
> ===================================================================
> --- 2.6.21-rc6-mm1.orig/include/asm-i386/mtrr.h
> +++ 2.6.21-rc6-mm1/include/asm-i386/mtrr.h
> @@ -69,6 +69,7 @@ struct mtrr_gentry
> 
>  /*  The following functions are for use by other drivers  */
>  # ifdef CONFIG_MTRR
> +extern void mtrr_save_fixed_ranges(void *);

We prefer to have a variable name in the prototype (cf. below).


>  extern int mtrr_add (unsigned long base, unsigned long size,
>  		     unsigned int type, char increment);
>  extern int mtrr_add_page (unsigned long base, unsigned long size,


---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
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