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authorDavid Hildenbrand <david@redhat.com>2021-11-05 23:44:24 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-11-06 23:30:42 +0300
commit50f9481ed9fb8a2d2a06a155634c7f9eeff9fa61 (patch)
tree1ddf70d4705a8f3066029fb54d69f4e8db34ec51 /include/linux/memory.h
parent71b6f2dda824d044242145db8dc10c2037242899 (diff)
downloadlinux-50f9481ed9fb8a2d2a06a155634c7f9eeff9fa61.tar.xz
mm/memory_hotplug: remove CONFIG_MEMORY_HOTPLUG_SPARSE
CONFIG_MEMORY_HOTPLUG depends on CONFIG_SPARSEMEM, so there is no need for CONFIG_MEMORY_HOTPLUG_SPARSE anymore; adjust all instances to use CONFIG_MEMORY_HOTPLUG and remove CONFIG_MEMORY_HOTPLUG_SPARSE. Link: https://lkml.kernel.org/r/20210929143600.49379-3-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Acked-by: Shuah Khan <skhan@linuxfoundation.org> [kselftest] Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Oscar Salvador <osalvador@suse.de> Cc: Alex Shi <alexs@kernel.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/memory.h')
-rw-r--r--include/linux/memory.h24
1 files changed, 10 insertions, 14 deletions
diff --git a/include/linux/memory.h b/include/linux/memory.h
index 053a530c7bdd..0328ec039c38 100644
--- a/include/linux/memory.h
+++ b/include/linux/memory.h
@@ -110,7 +110,7 @@ struct mem_section;
#define SLAB_CALLBACK_PRI 1
#define IPC_CALLBACK_PRI 10
-#ifndef CONFIG_MEMORY_HOTPLUG_SPARSE
+#ifndef CONFIG_MEMORY_HOTPLUG
static inline void memory_dev_init(void)
{
return;
@@ -126,7 +126,14 @@ static inline int memory_notify(unsigned long val, void *v)
{
return 0;
}
-#else
+static inline int hotplug_memory_notifier(notifier_fn_t fn, int pri)
+{
+ return 0;
+}
+/* These aren't inline functions due to a GCC bug. */
+#define register_hotmemory_notifier(nb) ({ (void)(nb); 0; })
+#define unregister_hotmemory_notifier(nb) ({ (void)(nb); })
+#else /* CONFIG_MEMORY_HOTPLUG */
extern int register_memory_notifier(struct notifier_block *nb);
extern void unregister_memory_notifier(struct notifier_block *nb);
int create_memory_block_devices(unsigned long start, unsigned long size,
@@ -148,9 +155,6 @@ struct memory_group *memory_group_find_by_id(int mgid);
typedef int (*walk_memory_groups_func_t)(struct memory_group *, void *);
int walk_dynamic_memory_groups(int nid, walk_memory_groups_func_t func,
struct memory_group *excluded, void *arg);
-#endif /* CONFIG_MEMORY_HOTPLUG_SPARSE */
-
-#ifdef CONFIG_MEMORY_HOTPLUG
#define hotplug_memory_notifier(fn, pri) ({ \
static __meminitdata struct notifier_block fn##_mem_nb =\
{ .notifier_call = fn, .priority = pri };\
@@ -158,15 +162,7 @@ int walk_dynamic_memory_groups(int nid, walk_memory_groups_func_t func,
})
#define register_hotmemory_notifier(nb) register_memory_notifier(nb)
#define unregister_hotmemory_notifier(nb) unregister_memory_notifier(nb)
-#else
-static inline int hotplug_memory_notifier(notifier_fn_t fn, int pri)
-{
- return 0;
-}
-/* These aren't inline functions due to a GCC bug. */
-#define register_hotmemory_notifier(nb) ({ (void)(nb); 0; })
-#define unregister_hotmemory_notifier(nb) ({ (void)(nb); })
-#endif
+#endif /* CONFIG_MEMORY_HOTPLUG */
/*
* Kernel text modification mutex, used for code patching. Users of this lock