linux-kernel - Re: [patch] BFS 421: confine for_each

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Date:	Wed, 6 Jun 2012 22:46:37 +0800
From:	Chen <hi3766691@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: [patch] BFS 421: confine for_each_domain to SMP

On Wed, Jun 6, 2012 at 10:46 PM, Chen <hi3766691@...il.com> wrote:
> On Wed, Jun 6, 2012 at 9:23 PM, Hillf Danton <dhillf@...il.com> wrote:
>> Lets trap the insane build.
>>
>>
>> --- a/kernel/sched/bfs.c        Wed Jun  6 20:56:22 2012
>> +++ b/kernel/sched/bfs.c        Wed Jun  6 21:01:00 2012
>> @@ -324,7 +324,6 @@ int __weak arch_sd_sibling_asym_packing(
>>  {
>>        return 0*SD_ASYM_PACKING;
>>  }
>> -#endif
>>
>>  #define rcu_dereference_check_sched_domain(p) \
>>        rcu_dereference_check((p), \
>> @@ -339,6 +338,9 @@ int __weak arch_sd_sibling_asym_packing(
>>  */
>>  #define for_each_domain(cpu, __sd) \
>>        for (__sd = rcu_dereference_check_sched_domain(cpu_rq(cpu)->sd);
>> __sd; __sd = __sd->parent)
>> +#else
>> +#define for_each_domain(cpu, __sd)     BUILD_BUG()
>> +#endif
>>
>>  static inline void update_rq_clock(struct rq *rq);
>>
>> --
>> --
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>
> Good! You haven't give up, Hilff. :-)
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