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cpu/hotplug: remove CPUHP_SLAB_PREPARE hooks

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The CPUHP_SLAB_PREPARE hooks are only used by SLAB which is removed.
SLUB defines them as NULL, so we can remove those altogether.

Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Vlastimil Babka 2023-10-02 16:36:55 +02:00
parent bc3dcb850f
commit 70da1d01ed
3 changed files with 0 additions and 14 deletions
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1
include/linux/cpuhotplug.h
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@ -108,7 +108,6 @@ enum cpuhp_state {
CPUHP_X2APIC_PREPARE, CPUHP_X2APIC_PREPARE,
CPUHP_SMPCFD_PREPARE, CPUHP_SMPCFD_PREPARE,
CPUHP_RELAY_PREPARE, CPUHP_RELAY_PREPARE,
CPUHP_SLAB_PREPARE,
CPUHP_MD_RAID5_PREPARE, CPUHP_MD_RAID5_PREPARE,
CPUHP_RCUTREE_PREP, CPUHP_RCUTREE_PREP,
CPUHP_CPUIDLE_COUPLED_PREPARE, CPUHP_CPUIDLE_COUPLED_PREPARE,

8
include/linux/slab.h
View File

@ -788,12 +788,4 @@ size_t kmalloc_size_roundup(size_t size);
void __init kmem_cache_init_late(void); void __init kmem_cache_init_late(void);
#if defined(CONFIG_SMP) && defined(CONFIG_SLAB)
int slab_prepare_cpu(unsigned int cpu);
int slab_dead_cpu(unsigned int cpu);
#else
#define slab_prepare_cpu NULL
#define slab_dead_cpu NULL
#endif
#endif /* _LINUX_SLAB_H */ #endif /* _LINUX_SLAB_H */

5
kernel/cpu.c
View File

@ -2125,11 +2125,6 @@ static struct cpuhp_step cpuhp_hp_states[] = {
.startup.single = relay_prepare_cpu, .startup.single = relay_prepare_cpu,
.teardown.single = NULL, .teardown.single = NULL,
}, },
[CPUHP_SLAB_PREPARE] = {
.name = "slab:prepare",
.startup.single = slab_prepare_cpu,
.teardown.single = slab_dead_cpu,
},
[CPUHP_RCUTREE_PREP] = { [CPUHP_RCUTREE_PREP] = {
.name = "RCU/tree:prepare", .name = "RCU/tree:prepare",
.startup.single = rcutree_prepare_cpu, .startup.single = rcutree_prepare_cpu,