[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [XEN PATCH 3/5] xen/sort: address violations of MISRA C:2012 Rule 8.2


  • To: Federico Serafini <federico.serafini@xxxxxxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Mon, 20 Nov 2023 17:00:36 +0100
  • Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=suse.com; dmarc=pass action=none header.from=suse.com; dkim=pass header.d=suse.com; arc=none
  • Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=AWVynRCxE0108kaL/b4WuFgrrnpWuzoAnweAuT5eefo=; b=OPJ6ZD5mnzVo8u/09nIjKrhcxpr03FJsz3vFZ7PAyEhtqemnUVsx7AbI2H0Dk21T8U3Wd/Ox71FL7R3CzjaKflwUY4TF7XXAwWuUF2/N3pFRIiykVAiVmp9xWakBTLqo60I/q5si1EZgeu+dHQu7DB88UzmD9GCde2bcwQja1Lz8/MfuYo1qJYMeXSu2l4S0Zm6yMKVjw+EX1pLDcRe/sLnycGgsCn1xLHn8lIUXnBYxyOE2cMa5LDLkUmIbut6zIFYGnxt7MNhrgNBlBtAEaJHZOxHU7l6tumH4nKO1p6pFkOuWTuECKtKMZJTagh/WTzYPtqLxvJeITfb2IkUiQg==
  • Arc-seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=RlYJSj8QRMtfhheLleeBhQ15OqIb3AlrVrSJj/De+gcdw+8ItE59njfH7HmBMNWPMfCbULlPnQi2gZHQu/kkaYK2I+aAuTVMy4ivo7BJToeXZc3GoL7W/G47fTGb6LmnoK3auiF3gRIfbfL1Y7vMDL82uYPLyO764ii5GZcjtvQxNVFUtYExYwvb0oTsQGVRNo5u4sGndxuZ/4BXErr2GEOPWc06BVefIslNKNEgfLc9cDSj3B/X5+rFulPzOyXjtRykzIuWCSSNJBaGuGNuFoH2U5o6VcdPHRSwy5smsyEVEdXOupMJTFmT6SL/KnqyuIJ1IeDNwCgND1Fml4+HYg==
  • Authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=suse.com;
  • Autocrypt: addr=jbeulich@xxxxxxxx; keydata= xsDiBFk3nEQRBADAEaSw6zC/EJkiwGPXbWtPxl2xCdSoeepS07jW8UgcHNurfHvUzogEq5xk hu507c3BarVjyWCJOylMNR98Yd8VqD9UfmX0Hb8/BrA+Hl6/DB/eqGptrf4BSRwcZQM32aZK 7Pj2XbGWIUrZrd70x1eAP9QE3P79Y2oLrsCgbZJfEwCgvz9JjGmQqQkRiTVzlZVCJYcyGGsD /0tbFCzD2h20ahe8rC1gbb3K3qk+LpBtvjBu1RY9drYk0NymiGbJWZgab6t1jM7sk2vuf0Py O9Hf9XBmK0uE9IgMaiCpc32XV9oASz6UJebwkX+zF2jG5I1BfnO9g7KlotcA/v5ClMjgo6Gl MDY4HxoSRu3i1cqqSDtVlt+AOVBJBACrZcnHAUSuCXBPy0jOlBhxPqRWv6ND4c9PH1xjQ3NP nxJuMBS8rnNg22uyfAgmBKNLpLgAGVRMZGaGoJObGf72s6TeIqKJo/LtggAS9qAUiuKVnygo 3wjfkS9A3DRO+SpU7JqWdsveeIQyeyEJ/8PTowmSQLakF+3fote9ybzd880fSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPsJgBBMRAgAgBQJZN5xEAhsDBgsJCAcDAgQVAggDBBYC AwECHgECF4AACgkQoDSui/t3IH4J+wCfQ5jHdEjCRHj23O/5ttg9r9OIruwAn3103WUITZee e7Sbg12UgcQ5lv7SzsFNBFk3nEQQCACCuTjCjFOUdi5Nm244F+78kLghRcin/awv+IrTcIWF hUpSs1Y91iQQ7KItirz5uwCPlwejSJDQJLIS+QtJHaXDXeV6NI0Uef1hP20+y8qydDiVkv6l IreXjTb7DvksRgJNvCkWtYnlS3mYvQ9NzS9PhyALWbXnH6sIJd2O9lKS1Mrfq+y0IXCP10eS FFGg+Av3IQeFatkJAyju0PPthyTqxSI4lZYuJVPknzgaeuJv/2NccrPvmeDg6Coe7ZIeQ8Yj t0ARxu2xytAkkLCel1Lz1WLmwLstV30g80nkgZf/wr+/BXJW/oIvRlonUkxv+IbBM3dX2OV8 AmRv1ySWPTP7AAMFB/9PQK/VtlNUJvg8GXj9ootzrteGfVZVVT4XBJkfwBcpC/XcPzldjv+3 HYudvpdNK3lLujXeA5fLOH+Z/G9WBc5pFVSMocI71I8bT8lIAzreg0WvkWg5V2WZsUMlnDL9 mpwIGFhlbM3gfDMs7MPMu8YQRFVdUvtSpaAs8OFfGQ0ia3LGZcjA6Ik2+xcqscEJzNH+qh8V m5jjp28yZgaqTaRbg3M/+MTbMpicpZuqF4rnB0AQD12/3BNWDR6bmh+EkYSMcEIpQmBM51qM EKYTQGybRCjpnKHGOxG0rfFY1085mBDZCH5Kx0cl0HVJuQKC+dV2ZY5AqjcKwAxpE75MLFkr wkkEGBECAAkFAlk3nEQCGwwACgkQoDSui/t3IH7nnwCfcJWUDUFKdCsBH/E5d+0ZnMQi+G0A nAuWpQkjM1ASeQwSHEeAWPgskBQL
  • Cc: consulting@xxxxxxxxxxx, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
  • Delivery-date: Mon, 20 Nov 2023 16:00:52 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 20.11.2023 14:13, Federico Serafini wrote:
> On 20/11/23 10:02, Jan Beulich wrote:
>> On 17.11.2023 09:40, Federico Serafini wrote:
>>> --- a/xen/include/xen/sort.h
>>> +++ b/xen/include/xen/sort.h
>>> @@ -23,8 +23,8 @@
>>>   extern gnu_inline
>>>   #endif
>>>   void sort(void *base, size_t num, size_t size,
>>> -          int (*cmp)(const void *, const void *),
>>> -          void (*swap)(void *, void *, size_t))
>>> +          int (*cmp)(const void *key, const void *elem),
>>
>> Why "key" and "elem" here, but ...
>>
>>> +          void (*swap)(void *a, void *b, size_t size))
>>
>> ... "a" and "b" here? The first example of users of sort() that I'm
>> looking at right now (x86/extable.c) is consistent in its naming.
>>
> 
> On the Arm side there are {cmp,swap}_memory_node() and
> {cmp,swap}_mmio_handler(): "key"/"elem" are used for the comparison
> and "_a"/"_b" for the swap.

So - re-raising a question Stefano did raise - is Misra concerned about
such discrepancies? If yes, _all_ instances need harmonizing. If not, I
see no reason to go with misleading names here.

Jan



 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.