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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2007-04-12 15:30:22 +1000
committerPaul Mackerras <paulus@samba.org>2007-04-13 04:09:39 +1000
commit88df6e90fa9782dbf44d936e44649afe271e4790 (patch)
treed0f4c46731e35e96a381dd3e3138f0276741ca57 /include/asm-powerpc
parentee4f2ea48674b6c9d91bc854edc51a3e6a7168c4 (diff)
[POWERPC] DEBUG_PAGEALLOC for 32-bit
Here's an implementation of DEBUG_PAGEALLOC for ppc32. It disables BAT mapping and is only tested with Hash table based processor though it shouldn't be too hard to adapt it to others. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> arch/powerpc/Kconfig.debug | 9 ++++++ arch/powerpc/mm/init_32.c | 4 +++ arch/powerpc/mm/pgtable_32.c | 52 +++++++++++++++++++++++++++++++++++++++ arch/powerpc/mm/ppc_mmu_32.c | 4 ++- include/asm-powerpc/cacheflush.h | 6 ++++ 5 files changed, 74 insertions(+), 1 deletion(-) Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc')
-rw-r--r--include/asm-powerpc/cacheflush.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-powerpc/cacheflush.h b/include/asm-powerpc/cacheflush.h
index 08e93e78921..ba667a383b8 100644
--- a/include/asm-powerpc/cacheflush.h
+++ b/include/asm-powerpc/cacheflush.h
@@ -64,6 +64,12 @@ extern void flush_dcache_phys_range(unsigned long start, unsigned long stop);
memcpy(dst, src, len)
+
+#ifdef CONFIG_DEBUG_PAGEALLOC
+/* internal debugging function */
+void kernel_map_pages(struct page *page, int numpages, int enable);
+#endif
+
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_CACHEFLUSH_H */