| Message ID | 20250226082549.6034-3-shivankg@amd.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Add NUMA mempolicy support for KVM guest-memfd | expand |
On 2/26/25 9:25 AM, Shivank Garg wrote: > KVM guest_memfd wants to implement support for NUMA policies just like > shmem already does using the shared policy infrastructure. As > guest_memfd currently resides in KVM module code, we have to export the > relevant symbols. > > In the future, guest_memfd might be moved to core-mm, at which point the > symbols no longer would have to be exported. When/if that happens is > still unclear. > > Acked-by: David Hildenbrand <david@redhat.com> > Signed-off-by: Shivank Garg <shivankg@amd.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> > --- > mm/mempolicy.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/mm/mempolicy.c b/mm/mempolicy.c > index bbaadbeeb291..d9c5dcdadcd0 100644 > --- a/mm/mempolicy.c > +++ b/mm/mempolicy.c > @@ -214,6 +214,7 @@ struct mempolicy *get_task_policy(struct task_struct *p) > > return &default_policy; > } > +EXPORT_SYMBOL_GPL(get_task_policy); > > static const struct mempolicy_operations { > int (*create)(struct mempolicy *pol, const nodemask_t *nodes); > @@ -347,6 +348,7 @@ void __mpol_put(struct mempolicy *pol) > return; > kmem_cache_free(policy_cache, pol); > } > +EXPORT_SYMBOL_GPL(__mpol_put); > > static void mpol_rebind_default(struct mempolicy *pol, const nodemask_t *nodes) > { > @@ -2736,6 +2738,7 @@ struct mempolicy *mpol_shared_policy_lookup(struct shared_policy *sp, > read_unlock(&sp->lock); > return pol; > } > +EXPORT_SYMBOL_GPL(mpol_shared_policy_lookup); > > static void sp_free(struct sp_node *n) > { > @@ -3021,6 +3024,7 @@ void mpol_shared_policy_init(struct shared_policy *sp, struct mempolicy *mpol) > mpol_put(mpol); /* drop our incoming ref on sb mpol */ > } > } > +EXPORT_SYMBOL_GPL(mpol_shared_policy_init); > > int mpol_set_shared_policy(struct shared_policy *sp, > struct vm_area_struct *vma, struct mempolicy *pol) > @@ -3039,6 +3043,7 @@ int mpol_set_shared_policy(struct shared_policy *sp, > sp_free(new); > return err; > } > +EXPORT_SYMBOL_GPL(mpol_set_shared_policy); > > /* Free a backing policy store on inode delete. */ > void mpol_free_shared_policy(struct shared_policy *sp) > @@ -3057,6 +3062,7 @@ void mpol_free_shared_policy(struct shared_policy *sp) > } > write_unlock(&sp->lock); > } > +EXPORT_SYMBOL_GPL(mpol_free_shared_policy); > > #ifdef CONFIG_NUMA_BALANCING > static int __initdata numabalancing_override;
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index bbaadbeeb291..d9c5dcdadcd0 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -214,6 +214,7 @@ struct mempolicy *get_task_policy(struct task_struct *p) return &default_policy; } +EXPORT_SYMBOL_GPL(get_task_policy); static const struct mempolicy_operations { int (*create)(struct mempolicy *pol, const nodemask_t *nodes); @@ -347,6 +348,7 @@ void __mpol_put(struct mempolicy *pol) return; kmem_cache_free(policy_cache, pol); } +EXPORT_SYMBOL_GPL(__mpol_put); static void mpol_rebind_default(struct mempolicy *pol, const nodemask_t *nodes) { @@ -2736,6 +2738,7 @@ struct mempolicy *mpol_shared_policy_lookup(struct shared_policy *sp, read_unlock(&sp->lock); return pol; } +EXPORT_SYMBOL_GPL(mpol_shared_policy_lookup); static void sp_free(struct sp_node *n) { @@ -3021,6 +3024,7 @@ void mpol_shared_policy_init(struct shared_policy *sp, struct mempolicy *mpol) mpol_put(mpol); /* drop our incoming ref on sb mpol */ } } +EXPORT_SYMBOL_GPL(mpol_shared_policy_init); int mpol_set_shared_policy(struct shared_policy *sp, struct vm_area_struct *vma, struct mempolicy *pol) @@ -3039,6 +3043,7 @@ int mpol_set_shared_policy(struct shared_policy *sp, sp_free(new); return err; } +EXPORT_SYMBOL_GPL(mpol_set_shared_policy); /* Free a backing policy store on inode delete. */ void mpol_free_shared_policy(struct shared_policy *sp) @@ -3057,6 +3062,7 @@ void mpol_free_shared_policy(struct shared_policy *sp) } write_unlock(&sp->lock); } +EXPORT_SYMBOL_GPL(mpol_free_shared_policy); #ifdef CONFIG_NUMA_BALANCING static int __initdata numabalancing_override;