Re: [PATCH v2 1/3] zsmalloc: support zsmalloc to ARM, MIPS, SUPERH

[Seth Jennings <sjenning@linux.vnet.ibm.com>]

On 05/15/2012 09:05 PM, Minchan Kim wrote:

> zsmalloc uses set_pte and __flush_tlb_one for performance but
> many architecture don't support it. so this patch removes
> set_pte and __flush_tlb_one which are x86 dependency.
> Instead of it, use local_flush_tlb_kernel_range which are available
> by more architectures. It would be better than supporting only x86
> and last patch in series will enable again with supporting
> local_flush_tlb_kernel_range in x86.
> 
> About local_flush_tlb_kernel_range,
> If architecture is very smart, it could flush only tlb entries related to vaddr.
> If architecture is smart, it could flush only tlb entries related to a CPU.
> If architecture is _NOT_ smart, it could flush all entries of all CPUs.
> So, it would be best to support both portability and performance.
> 
> Cc: Russell King <linux@arm.linux.org.uk>
> Cc: Ralf Baechle <ralf@linux-mips.org>
> Cc: Paul Mundt <lethal@linux-sh.org>
> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
> Cc: Chen Liqin <liqin.chen@sunplusct.com>
> Signed-off-by: Minchan Kim <minchan@kernel.org>


For the zsmalloc changes:

Acked-by: Seth Jennings <sjenning@linux.vnet.ibm.com>

Thanks,
Seth

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