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Re: kmalloc issue on MIPS target

To: ralf@linux-mips.org, linux-mips@linux-mips.org
Subject: Re: kmalloc issue on MIPS target
From: naveen yadav <yad.naveen@gmail.com>
Date: Wed, 18 Aug 2010 18:14:36 +0530
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On Wed, Aug 18, 2010 at 6:07 PM, naveen yadav <yad.naveen@gmail.com> wrote:
> Hi All,
>
> We are using MIPS(mips32r2) target. when I alloc memory using kmalloc
> suppose  28 bytes, the kernel still consume 128 bytes.
>
> So when I check File on kernel source  mach-ip32/kmalloc.h
>
> Since it is allign to 128 bytes so i understand that even if  I
> consume 1 byte it will waste 128 bytes.
>
> #ifndef __ASM_MACH_IP32_KMALLOC_H
> #define __ASM_MACH_IP32_KMALLOC_H
>
>
> #if defined(CONFIG_CPU_R5000) || defined(CONFIG_CPU_RM7000)
> #define ARCH_KMALLOC_MINALIGN   32
> #else
> #define ARCH_KMALLOC_MINALIGN   128
> #endif
>
> #endif /* __ASM_MACH_IP32_KMALLOC_H */
>
>
> So I could not understand why it is allign to 128 bytes. Is there any
> specific reason for it. ?
>
> thanks
>

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