linux-kernel - Re: [PATCH v2] arch/x86/tools/gen-insn-attr-x86.awk: remove duplicate const

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Date:	Sun, 09 Dec 2012 07:50:33 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Cong Ding <dinggnu@...il.com>
CC:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org,
	"yrl.pp-manager.tt@...achi.com" <yrl.pp-manager.tt@...achi.com>
Subject: Re: [PATCH v2] arch/x86/tools/gen-insn-attr-x86.awk: remove duplicate const

No, that would really be wrong - changing the type.

Masami Hiramatsu <masami.hiramatsu.pt@...achi.com> wrote:

>(2012/12/08 8:17), Cong Ding wrote:
>>>>>>> Patch description please?
>>>>>> there are 2 consts in the definition of one variable
>>>>>>
>>>>>
>>>>> Please put in an actual patch description.  The first line
>(subject
>>>>> line) is a title; the patch should make sense without it.
>>>> sorry for that. so like this is fine?
>>>>
>>>
>>> Well, except that typically you should explain which variable it is.
>>> Yes, it is obvious if you look at the patch, but you're making the
>>> reader spend a few more moments than necessary.
>>>
>>> Also, you should explain what the harm is -- if it breaks anything
>>> or is just a cosmetic issue.
>> sorry again for lacking of experience...
>> and I missed another same error, so send version 2.
>
>Ah, sorry for my mistake. I would like to make both the value
>pointed by the pointers and the pointers itself read-only.
>Thus the right way of the patch should be;
>
>-	print "const insn_attr_t const *inat_escape_tables[INAT_ESC_MAX + 1]"
>\
>+	print "const insn_attr_t * const inat_escape_tables[INAT_ESC_MAX +
>1]" \
>
>Cong, could you update your patch? then I can Ack that.
>
>Thank you,
>
>> 
>> - cong
>> ---
>> From 6cf729b913287a6fc06325ca75ccf0efff9274e8 Mon Sep 17 00:00:00
>2001
>> From: Cong Ding <dinggnu@...il.com>
>> Date: Fri, 7 Dec 2012 23:14:32 +0000
>> Subject: [PATCH] arch/x86/tools/gen-insn-attr-x86.awk: remove
>duplicate const
>> 
>> fix the following sparse warning:
>> arch/x86/lib/inat-tables.c:1080:25: warning: duplicate const
>> arch/x86/lib/inat-tables.c:1095:25: warning: duplicate const
>> arch/x86/lib/inat-tables.c:1118:25: warning: duplicate const
>> 
>> for variable inat_escape_tables, inat_group_tables, and
>inat_avx_tables
>> 
>> Signed-off-by: Cong Ding <dinggnu@...il.com>
>> ---
>>  arch/x86/tools/gen-insn-attr-x86.awk |    6 +++---
>>  1 files changed, 3 insertions(+), 3 deletions(-)
>> 
>> diff --git a/arch/x86/tools/gen-insn-attr-x86.awk
>b/arch/x86/tools/gen-insn-attr-x86.awk
>> index ddcf39b..987c7b2 100644
>> --- a/arch/x86/tools/gen-insn-attr-x86.awk
>> +++ b/arch/x86/tools/gen-insn-attr-x86.awk
>> @@ -356,7 +356,7 @@ END {
>>  		exit 1
>>  	# print escape opcode map's array
>>  	print "/* Escape opcode map array */"
>> -	print "const insn_attr_t const *inat_escape_tables[INAT_ESC_MAX +
>1]" \
>> +	print "const insn_attr_t *inat_escape_tables[INAT_ESC_MAX + 1]" \
>>  	      "[INAT_LSTPFX_MAX + 1] = {"
>>  	for (i = 0; i < geid; i++)
>>  		for (j = 0; j < max_lprefix; j++)
>> @@ -365,7 +365,7 @@ END {
>>  	print "};\n"
>>  	# print group opcode map's array
>>  	print "/* Group opcode map array */"
>> -	print "const insn_attr_t const *inat_group_tables[INAT_GRP_MAX +
>1]"\
>> +	print "const insn_attr_t *inat_group_tables[INAT_GRP_MAX + 1]"\
>>  	      "[INAT_LSTPFX_MAX + 1] = {"
>>  	for (i = 0; i < ggid; i++)
>>  		for (j = 0; j < max_lprefix; j++)
>> @@ -374,7 +374,7 @@ END {
>>  	print "};\n"
>>  	# print AVX opcode map's array
>>  	print "/* AVX opcode map array */"
>> -	print "const insn_attr_t const *inat_avx_tables[X86_VEX_M_MAX +
>1]"\
>> +	print "const insn_attr_t *inat_avx_tables[X86_VEX_M_MAX + 1]"\
>>  	      "[INAT_LSTPFX_MAX + 1] = {"
>>  	for (i = 0; i < gaid; i++)
>>  		for (j = 0; j < max_lprefix; j++)
>> 

-- 
Sent from my mobile phone. Please excuse brevity and lack of formatting.
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