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SubjectRe: [PATCH] mtrr use type bool
Paul Jimenez wrote:
> On Wednesday, Oct 31, 2007, Richard Knutsson writes:
>
>>> if (likely(replace < 0))
>>> usage_table[i] = 1;
>>> else {
>>> - usage_table[i] = usage_table[replace] + !!increment;
>>> + usage_table[i] = usage_table[replace] + increment;
>>>
>>>
>> This seems a bit strange, using a boolean as an integer (yes I know, it
>> works but semantically...). What about:
>>
>> + usage_table[i] = usage_table[replace];
>> + usage_table[i] += increment ? 1 : 0;
>> ?
>>
>
> I've got no strong feelings either way.
>
> usage_table[i] = usage_table[replace];
> if (increment) usage_table[i]++;
>
> ...would work just fine too.
>
Mm, looks even better IMO. (with the usage_table[i]++; on its own line ;) )
>
>>> index 289dfe6..54347e9 100644
>>> --- a/arch/x86/kernel/cpu/mtrr/mtrr.h
>>> +++ b/arch/x86/kernel/cpu/mtrr/mtrr.h
>>> @@ -2,10 +2,8 @@
>>> * local mtrr defines.
>>> */
>>>
>>> -#ifndef TRUE
>>> -#define TRUE 1
>>> -#define FALSE 0
>>> -#endif
>>> +#include <linux/types.h>
>>> +#include <linux/stddef.h>
>>>
>>>
>> Isn't those included by default?
>>
>
> Are they? I couldn't find the #includes so I put them in, figuring that at worst cpp will strip them.
>
They are #included by linux/kernel.h... But it may be as well to include
them, avoiding the dependence on the overgrown kernel.h.
>
>> The rest looks good :)
>>
>> Richard Knutsson
>>
>
>
> Cool. Any idea what maintainer I should send this to? I'm not sure Mr. Gooch is still actively the mtrr maintainer. Maybe the new x86 maintainers could apply it?
>
Sorry, not really. Did a 'git log arch/x86/kernel/cpu/mtrr/', but it
seems there is no loges before the move to arch/x86/... Anyway, you may
like to add Thomas Gleixner and Ingo Molnar, they have signed-off 3 out
of the 4 remaining commits (otherwise they should know where to send it).

Richard Knutsson

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