x86/mm/pat: Drop the rbt_ prefix from external memtype calls

Drop the rbt_memtype_*() call rbt_ prefix, as we no longer use
an rbtree directly.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lkml.kernel.org/r/20191121011601.20611-4-dave@stgolabs.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/mm/pat.c

@@ -603,7 +603,7 @@ int reserve_memtype(u64 start, u64 end, enum page_cache_mode req_type,
 
 	spin_lock(&memtype_lock);
 
-	err = rbt_memtype_check_insert(new, new_type);
+	err = memtype_check_insert(new, new_type);
 	if (err) {
 		pr_info("x86/PAT: reserve_memtype failed [mem %#010Lx-%#010Lx], track %s, req %s\n",
 			start, end - 1,
@@ -650,7 +650,7 @@ int free_memtype(u64 start, u64 end)
 	}
 
 	spin_lock(&memtype_lock);
-	entry = rbt_memtype_erase(start, end);
+	entry = memtype_erase(start, end);
 	spin_unlock(&memtype_lock);
 
 	if (IS_ERR(entry)) {
@@ -693,7 +693,7 @@ static enum page_cache_mode lookup_memtype(u64 paddr)
 
 	spin_lock(&memtype_lock);
 
-	entry = rbt_memtype_lookup(paddr);
+	entry = memtype_lookup(paddr);
 	if (entry != NULL)
 		rettype = entry->type;
 	else
@@ -1109,7 +1109,7 @@ static struct memtype *memtype_get_idx(loff_t pos)
 		return NULL;
 
 	spin_lock(&memtype_lock);
-	ret = rbt_memtype_copy_nth_element(print_entry, pos);
+	ret = memtype_copy_nth_element(print_entry, pos);
 	spin_unlock(&memtype_lock);
 
 	if (!ret) {

arch/x86/mm/pat_internal.h

@@ -29,20 +29,20 @@ static inline char *cattr_name(enum page_cache_mode pcm)
 }
 
 #ifdef CONFIG_X86_PAT
-extern int rbt_memtype_check_insert(struct memtype *new,
-					enum page_cache_mode *new_type);
-extern struct memtype *rbt_memtype_erase(u64 start, u64 end);
-extern struct memtype *rbt_memtype_lookup(u64 addr);
-extern int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos);
+extern int memtype_check_insert(struct memtype *new,
+				enum page_cache_mode *new_type);
+extern struct memtype *memtype_erase(u64 start, u64 end);
+extern struct memtype *memtype_lookup(u64 addr);
+extern int memtype_copy_nth_element(struct memtype *out, loff_t pos);
 #else
-static inline int rbt_memtype_check_insert(struct memtype *new,
-					enum page_cache_mode *new_type)
+static inline int memtype_check_insert(struct memtype *new,
+				       enum page_cache_mode *new_type)
 { return 0; }
-static inline struct memtype *rbt_memtype_erase(u64 start, u64 end)
+static inline struct memtype *memtype_erase(u64 start, u64 end)
 { return NULL; }
-static inline struct memtype *rbt_memtype_lookup(u64 addr)
+static inline struct memtype *memtype_lookup(u64 addr)
 { return NULL; }
-static inline int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos)
+static inline int memtype_copy_nth_element(struct memtype *out, loff_t pos)
 { return 0; }
 #endif
 

arch/x86/mm/pat_rbtree.c

@@ -109,8 +109,8 @@ failure:
 	return -EBUSY;
 }
 
-int rbt_memtype_check_insert(struct memtype *new,
-			     enum page_cache_mode *ret_type)
+int memtype_check_insert(struct memtype *new,
+			 enum page_cache_mode *ret_type)
 {
 	int err = 0;
 
@@ -125,13 +125,13 @@ int rbt_memtype_check_insert(struct memtype *new,
 	return 0;
 }
 
-struct memtype *rbt_memtype_erase(u64 start, u64 end)
+struct memtype *memtype_erase(u64 start, u64 end)
 {
 	struct memtype *data;
 
 	/*
 	 * Since the memtype_rbroot tree allows overlapping ranges,
-	 * rbt_memtype_erase() checks with EXACT_MATCH first, i.e. free
+	 * memtype_erase() checks with EXACT_MATCH first, i.e. free
 	 * a whole node for the munmap case.  If no such entry is found,
 	 * it then checks with END_MATCH, i.e. shrink the size of a node
 	 * from the end for the mremap case.
@@ -157,14 +157,14 @@ struct memtype *rbt_memtype_erase(u64 start, u64 end)
 	return data;
 }
 
-struct memtype *rbt_memtype_lookup(u64 addr)
+struct memtype *memtype_lookup(u64 addr)
 {
 	return memtype_interval_iter_first(&memtype_rbroot, addr,
 					   addr + PAGE_SIZE);
 }
 
 #if defined(CONFIG_DEBUG_FS)
-int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos)
+int memtype_copy_nth_element(struct memtype *out, loff_t pos)
 {
 	struct memtype *match;
 	int i = 1;