Merge branch 'for-linus' of git://gitserver.sunplusct.com/linux-2.6-score
* 'for-linus' of git://gitserver.sunplusct.com/linux-2.6-score:
score: include asm-generic/param.h in asm/delay.h.
score: fixed pfn_valid define.
score: add flush_dcahce_page and PG_dcache_dirty define
diff --git a/arch/score/include/asm/cacheflush.h b/arch/score/include/asm/cacheflush.h
index caaba24..1d545d0 100644
--- a/arch/score/include/asm/cacheflush.h
+++ b/arch/score/include/asm/cacheflush.h
@@ -14,10 +14,12 @@
extern void flush_icache_all(void);
extern void flush_icache_range(unsigned long start, unsigned long end);
extern void flush_dcache_range(unsigned long start, unsigned long end);
+extern void flush_dcache_page(struct page *page);
+
+#define PG_dcache_dirty PG_arch_1
#define flush_cache_dup_mm(mm) do {} while (0)
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
-#define flush_dcache_page(page) do {} while (0)
#define flush_dcache_mmap_lock(mapping) do {} while (0)
#define flush_dcache_mmap_unlock(mapping) do {} while (0)
#define flush_cache_vmap(start, end) do {} while (0)
diff --git a/arch/score/include/asm/delay.h b/arch/score/include/asm/delay.h
index 6726ec1..529e494 100644
--- a/arch/score/include/asm/delay.h
+++ b/arch/score/include/asm/delay.h
@@ -1,6 +1,8 @@
#ifndef _ASM_SCORE_DELAY_H
#define _ASM_SCORE_DELAY_H
+#include <asm-generic/param.h>
+
static inline void __delay(unsigned long loops)
{
/* 3 cycles per loop. */
diff --git a/arch/score/include/asm/page.h b/arch/score/include/asm/page.h
index d92a5a2..1e9ade8 100644
--- a/arch/score/include/asm/page.h
+++ b/arch/score/include/asm/page.h
@@ -74,7 +74,7 @@
#define page_to_bus(page) (page_to_phys(page))
#define phys_to_page(paddr) (pfn_to_page(phys_to_pfn(paddr)))
-#define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_mapnr)
+#define pfn_valid(pfn) (((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn))
#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
diff --git a/arch/score/kernel/setup.c b/arch/score/kernel/setup.c
index 6a2503c..6f898c0 100644
--- a/arch/score/kernel/setup.c
+++ b/arch/score/kernel/setup.c
@@ -49,6 +49,7 @@
min_low_pfn = PFN_UP(MEMORY_START);
max_low_pfn = PFN_UP(MEMORY_START + MEMORY_SIZE);
+ max_mapnr = max_low_pfn - min_low_pfn;
/* Initialize the boot-time allocator with low memory only. */
bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn,
diff --git a/arch/score/mm/cache.c b/arch/score/mm/cache.c
index dbac9d9..b25e957 100644
--- a/arch/score/mm/cache.c
+++ b/arch/score/mm/cache.c
@@ -29,6 +29,7 @@
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/sched.h>
+#include <linux/fs.h>
#include <asm/mmu_context.h>
@@ -51,6 +52,27 @@
}
}
+void flush_dcache_page(struct page *page)
+{
+ struct address_space *mapping = page_mapping(page);
+ unsigned long addr;
+
+ if (PageHighMem(page))
+ return;
+ if (mapping && !mapping_mapped(mapping)) {
+ set_bit(PG_dcache_dirty, &(page)->flags);
+ return;
+ }
+
+ /*
+ * We could delay the flush for the !page_mapping case too. But that
+ * case is for exec env/arg pages and those are %99 certainly going to
+ * get faulted into the tlb (and thus flushed) anyways.
+ */
+ addr = (unsigned long) page_address(page);
+ flush_data_cache_page(addr);
+}
+
/* called by update_mmu_cache. */
void __update_cache(struct vm_area_struct *vma, unsigned long address,
pte_t pte)
@@ -63,11 +85,11 @@
if (unlikely(!pfn_valid(pfn)))
return;
page = pfn_to_page(pfn);
- if (page_mapping(page) && test_bit(PG_arch_1, &page->flags)) {
+ if (page_mapping(page) && test_bit(PG_dcache_dirty, &(page)->flags)) {
addr = (unsigned long) page_address(page);
if (exec)
flush_data_cache_page(addr);
- clear_bit(PG_arch_1, &page->flags);
+ clear_bit(PG_dcache_dirty, &(page)->flags);
}
}
diff --git a/arch/score/mm/init.c b/arch/score/mm/init.c
index 4e3dcd0..8c15b2c 100644
--- a/arch/score/mm/init.c
+++ b/arch/score/mm/init.c
@@ -83,7 +83,6 @@
unsigned long codesize, reservedpages, datasize, initsize;
unsigned long tmp, ram = 0;
- max_mapnr = max_low_pfn;
high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
totalram_pages += free_all_bootmem();
totalram_pages -= setup_zero_page(); /* Setup zeroed pages. */
@@ -101,10 +100,6 @@
datasize = (unsigned long) &_edata - (unsigned long) &_etext;
initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin;
- kclist_add(&kcore_mem, __va(0), max_low_pfn << PAGE_SHIFT);
- kclist_add(&kcore_vmalloc, (void *) VMALLOC_START,
- VMALLOC_END - VMALLOC_START);
-
printk(KERN_INFO "Memory: %luk/%luk available (%ldk kernel code, "
"%ldk reserved, %ldk data, %ldk init, %ldk highmem)\n",
(unsigned long) nr_free_pages() << (PAGE_SHIFT-10),