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authorIngo Molnar <mingo@elte.hu>2008-01-30 13:33:58 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:33:58 +0100
commit12d6f21eacc21d84a809829543f2fe45c7e37319 (patch)
tree6985f2370ad238fb2a568547a5049751d7c95a69 /include
parent9a3dc7804e9856668caef41efc54179e61ffccc0 (diff)
downloadop-kernel-dev-12d6f21eacc21d84a809829543f2fe45c7e37319.zip
op-kernel-dev-12d6f21eacc21d84a809829543f2fe45c7e37319.tar.gz
x86: do not PSE on CONFIG_DEBUG_PAGEALLOC=y
get more testing of the c_p_a() code done by not turning off PSE on DEBUG_PAGEALLOC. this simplifies the early pagetable setup code, and tests the largepage-splitup code quite heavily. In the end, all the largepages will be split up pretty quickly, so there's no difference to how DEBUG_PAGEALLOC worked before. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include')
-rw-r--r--include/asm-x86/cacheflush.h5
-rw-r--r--include/linux/mm.h14
2 files changed, 13 insertions, 6 deletions
diff --git a/include/asm-x86/cacheflush.h b/include/asm-x86/cacheflush.h
index 9411a2d..fccb563 100644
--- a/include/asm-x86/cacheflush.h
+++ b/include/asm-x86/cacheflush.h
@@ -29,11 +29,6 @@ int change_page_attr(struct page *page, int numpages, pgprot_t prot);
int change_page_attr_addr(unsigned long addr, int numpages, pgprot_t prot);
void clflush_cache_range(void *addr, int size);
-#ifdef CONFIG_DEBUG_PAGEALLOC
-/* internal debugging function */
-void kernel_map_pages(struct page *page, int numpages, int enable);
-#endif
-
#ifdef CONFIG_DEBUG_RODATA
void mark_rodata_ro(void);
#endif
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 3c22d97..1bba678 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1118,9 +1118,21 @@ static inline void vm_stat_account(struct mm_struct *mm,
}
#endif /* CONFIG_PROC_FS */
-#ifndef CONFIG_DEBUG_PAGEALLOC
+#ifdef CONFIG_DEBUG_PAGEALLOC
+extern int debug_pagealloc_enabled;
+
+extern void kernel_map_pages(struct page *page, int numpages, int enable);
+
+static inline void enable_debug_pagealloc(void)
+{
+ debug_pagealloc_enabled = 1;
+}
+#else
static inline void
kernel_map_pages(struct page *page, int numpages, int enable) {}
+static inline void enable_debug_pagealloc(void)
+{
+}
#endif
extern struct vm_area_struct *get_gate_vma(struct task_struct *tsk);
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