Re: [PATCH v4 35/35] mm, slub: convert kmem_cpu_slab protection to local_lock

[Vlastimil Babka]

On 8/17/21 5:39 PM, Sebastian Andrzej Siewior wrote:
> On 2021-08-05 17:20:00 [+0200], Vlastimil Babka wrote:
>> @@ -2849,7 +2891,11 @@ static void *___slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node,
>>  
>>  load_freelist:
>>  
>> -	lockdep_assert_irqs_disabled();
>> +#ifdef CONFIG_PREEMPT_RT
>> +	lockdep_assert_held(this_cpu_ptr(&s->cpu_slab->lock.lock));
>> +#else
>> +	lockdep_assert_held(this_cpu_ptr(&s->cpu_slab->lock));
>> +#endif
> 
> Could you please make this hunk only
> 
> 	lockdep_assert_held(this_cpu_ptr(&s->cpu_slab->lock));
> 
> i.e. the non-RT version?

Does it mean that version works fine on RT now?

>>  	/*
>>  	 * freelist is pointing to the list of objects to be used.
> 
> 
> Sebastian
>