Re: [PATCH v2 20/25] powerpc32: Remove clear_pages() and define clear_page() inline

clear_pages() is never used, and PPC32 is the only architecture
(still) having this function. Neither PPC64 nor any other
architecture has it.
=20
This patch removes clear_page() and move clear_page() function
inline (same as PPC64) as it only is a few isns
=20
Signed-off-by: Christophe Leroy <redacted>
---
No change in v2
=20
 arch/powerpc/include/asm/page_32.h | 17 ++++++++++++++---
 arch/powerpc/kernel/misc_32.S      | 16 ----------------
 arch/powerpc/kernel/ppc_ksyms_32.c |  1 -
 3 files changed, 14 insertions(+), 20 deletions(-)
=20

diff --git a/arch/powerpc/include/asm/page_32.h b/arch/powerpc/include/as=

index 68d73b2..6a8e179 100644

--- a/arch/powerpc/include/asm/page_32.h
+++ b/arch/powerpc/include/asm/page_32.h

@@ -1,6 +1,8 @@
 #ifndef _ASM_POWERPC_PAGE_32_H
 #define _ASM_POWERPC_PAGE_32_H

=20
+#include <asm/cache.h>
+
 #if defined(CONFIG_PHYSICAL_ALIGN) && (CONFIG_PHYSICAL_START !=3D 0)
 #if (CONFIG_PHYSICAL_START % CONFIG_PHYSICAL_ALIGN) !=3D 0
 #error "CONFIG_PHYSICAL_START must be a multiple of CONFIG_PHYSICAL_ALIG=

@@ -36,9 +38,18 @@ typedef unsigned long long pte_basic_t;
 typedef unsigned long pte_basic_t;
 #endif

=20
-struct page;
-extern void clear_pages(void *page, int order);
-static inline void clear_page(void *page) { clear_pages(page, 0); }
+/*
+ * Clear page using the dcbz instruction, which doesn't cause any
+ * memory traffic (except to write out any cache lines which get
+ * displaced).  This only works on cacheable memory.
+ */
+static inline void clear_page(void *addr)
+{
+	unsigned int i;
+
+	for (i =3D 0; i < PAGE_SIZE / L1_CACHE_BYTES; i++, addr +=3D L1_CACHE_B=