x86: make various pageattr.c functions static

change_page_attr_add is only used in pageattr.c now, so we can
make this function static.
change_page_attr() isn't used anywere at all anymore; this function
is a really bad API anyway so just remove the bloat entirely.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 14 insertions, 37 deletions

diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index e5910ac37e59..e4d2b6930e61 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -210,7 +210,8 @@ repeat:
  * Modules and drivers should use the set_memory_* APIs instead.
  */
 
-int change_page_attr_addr(unsigned long address, int numpages, pgprot_t prot)
+static int change_page_attr_addr(unsigned long address, int numpages,
+                                                                pgprot_t prot)
 {
         int err = 0, kernel_map = 0, i;
 
@@ -252,36 +253,6 @@ int change_page_attr_addr(unsigned long address, int numpages, pgprot_t prot)
 }
 
 /**
- * change_page_attr - Change page table attributes in the linear mapping.
- * @page: First page to change
- * @numpages: Number of pages to change
- * @prot: New protection/caching type (PAGE_*)
- *
- * Returns 0 on success, otherwise a negated errno.
- *
- * This should be used when a page is mapped with a different caching policy
- * than write-back somewhere - some CPUs do not like it when mappings with
- * different caching policies exist. This changes the page attributes of the
- * in kernel linear mapping too.
- *
- * Caller must call global_flush_tlb() later to make the changes active.
- *
- * The caller needs to ensure that there are no conflicting mappings elsewhere
- * (e.g. in user space) * This function only deals with the kernel linear map.
- *
- * For MMIO areas without mem_map use change_page_attr_addr() instead.
- *
- * Modules and drivers should use the set_pages_* APIs instead.
- */
-int change_page_attr(struct page *page, int numpages, pgprot_t prot)
-{
-        unsigned long addr = (unsigned long)page_address(page);
-
-        return change_page_attr_addr(addr, numpages, prot);
-}
-EXPORT_UNUSED_SYMBOL(change_page_attr); /* to be removed in 2.6.27 */
-
-/**
  * change_page_attr_set - Change page table attributes in the linear mapping.
  * @addr: Virtual address in linear mapping.
  * @numpages: Number of pages to change
@@ -294,15 +265,14 @@ EXPORT_UNUSED_SYMBOL(change_page_attr); /* to be removed in 2.6.27 */
  * different caching policies exist. This changes the page attributes of the
  * in kernel linear mapping too.
  *
- * Caller must call global_flush_tlb() later to make the changes active.
- *
  * The caller needs to ensure that there are no conflicting mappings elsewhere
  * (e.g. in user space) * This function only deals with the kernel linear map.
  *
  * This function is different from change_page_attr() in that only selected bits
  * are impacted, all other bits remain as is.
  */
-int change_page_attr_set(unsigned long addr, int numpages, pgprot_t prot)
+static int change_page_attr_set(unsigned long addr, int numpages,
+                                                                pgprot_t prot)
 {
         pgprot_t current_prot;
         int level;
@@ -332,15 +302,14 @@ int change_page_attr_set(unsigned long addr, int numpages, pgprot_t prot)
  * different caching policies exist. This changes the page attributes of the
  * in kernel linear mapping too.
  *
- * Caller must call global_flush_tlb() later to make the changes active.
- *
  * The caller needs to ensure that there are no conflicting mappings elsewhere
  * (e.g. in user space) * This function only deals with the kernel linear map.
  *
  * This function is different from change_page_attr() in that only selected bits
  * are impacted, all other bits remain as is.
  */
-int change_page_attr_clear(unsigned long addr, int numpages, pgprot_t prot)
+static int change_page_attr_clear(unsigned long addr, int numpages,
+                                                                pgprot_t prot)
 {
         pgprot_t current_prot;
         int level;
@@ -549,3 +518,11 @@ void kernel_map_pages(struct page *page, int numpages, int enable)
         __flush_tlb_all();
 }
 #endif
+
+/*
+ * The testcases use internal knowledge of the implementation that shouldn't
+ * be exposed to the rest of the kernel. Include these directly here.
+ */
+#ifdef CONFIG_CPA_DEBUG
+#include "pageattr-test.c"
+#endif