linux-kernel - Re: [PATCH 5/9][v5] powerpc: implement is_instr_load

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Message-ID: <20131008040016.GC31666@concordia>
Date:	Tue, 8 Oct 2013 15:00:17 +1100
From:	Michael Ellerman <michael@...erman.id.au>
To:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Cc:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Michael Ellerman <michaele@....ibm.com>,
	linux-kernel@...r.kernel.org,
	Stephane Eranian <eranian@...gle.com>, linuxppc-dev@...abs.org,
	Paul Mackerras <paulus@...ba.org>,
	Anshuman Khandual <khandual@...ux.vnet.ibm.com>
Subject: Re: [PATCH 5/9][v5] powerpc: implement is_instr_load_store().

On Thu, Oct 03, 2013 at 12:03:25PM -0700, Sukadev Bhattiprolu wrote:
> Michael Ellerman [michael@...erman.id.au] wrote:
> | On Tue, Oct 01, 2013 at 05:15:06PM -0700, Sukadev Bhattiprolu wrote:
> | > Implement is_instr_load_store() to detect whether a given instruction
> | > is one of the fixed-point or floating-point load/store instructions.
> | > This function will be used in a follow-on patch to save memory hierarchy
> | > information of the load/store.
> | 
> | Anyway, I think the following logic is all we need for opcode 31:
> | 
> | bool is_load_store(int ext_opcode)
> 
> how about I call this is_load_store_2_06() and add a comment. Horrible
> but minimizes chance of misuse.

Actually it's is_opcode_31_load_store_2_06() - which is even more
horrible :)

But you can probably fold it in to the main routine and then call that
is_load_store_2_06(). Or whatever seems best, but yeah I think we should
make it very clear that it's only for 2.06.

cheers
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