Merge branch 'linus' into core/generic-dma-coherent

Conflicts:

	arch/x86/Kconfig

Signed-off-by: Ingo Molnar <mingo@elte.hu>

11 files changed, 106 insertions, 89 deletions

diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 5fd2184..56d0a7da 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -145,25 +145,39 @@ choice
 
 config PAGE_SIZE_4KB
 	bool "4kB"
-	depends on !X2TLB
+	depends on !MMU || !X2TLB
 	help
 	  This is the default page size used by all SuperH CPUs.
 
 config PAGE_SIZE_8KB
 	bool "8kB"
-	depends on X2TLB
+	depends on !MMU || X2TLB
 	help
 	  This enables 8kB pages as supported by SH-X2 and later MMUs.
 
+config PAGE_SIZE_16KB
+	bool "16kB"
+	depends on !MMU
+	help
+	  This enables 16kB pages on MMU-less SH systems.
+
 config PAGE_SIZE_64KB
 	bool "64kB"
-	depends on CPU_SH4 || CPU_SH5
+	depends on !MMU || CPU_SH4 || CPU_SH5
 	help
 	  This enables support for 64kB pages, possible on all SH-4
 	  CPUs and later.
 
 endchoice
 
+config ENTRY_OFFSET
+	hex
+	default "0x00001000" if PAGE_SIZE_4KB
+	default "0x00002000" if PAGE_SIZE_8KB
+	default "0x00004000" if PAGE_SIZE_16KB
+	default "0x00010000" if PAGE_SIZE_64KB
+	default "0x00000000"
+
 choice
 	prompt "HugeTLB page size"
 	depends on HUGETLB_PAGE && (CPU_SH4 || CPU_SH5) && MMU
diff --git a/arch/sh/mm/cache-debugfs.c b/arch/sh/mm/cache-debugfs.c
index c5b56d5..0e189cc 100644
--- a/arch/sh/mm/cache-debugfs.c
+++ b/arch/sh/mm/cache-debugfs.c
@@ -120,7 +120,7 @@ static const struct file_operations cache_debugfs_fops = {
 	.open		= cache_debugfs_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
-	.release	= seq_release,
+	.release	= single_release,
 };
 
 static int __init cache_debugfs_init(void)
diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c
index 43d7ff6b..1fdc8d9 100644
--- a/arch/sh/mm/cache-sh4.c
+++ b/arch/sh/mm/cache-sh4.c
@@ -4,6 +4,7 @@
  * Copyright (C) 1999, 2000, 2002  Niibe Yutaka
  * Copyright (C) 2001 - 2007  Paul Mundt
  * Copyright (C) 2003  Richard Curnow
+ * Copyright (c) 2007 STMicroelectronics (R&D) Ltd.
  *
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
@@ -22,6 +23,7 @@
  * entirety.
  */
 #define MAX_DCACHE_PAGES	64	/* XXX: Tune for ways */
+#define MAX_ICACHE_PAGES	32
 
 static void __flush_dcache_segment_1way(unsigned long start,
 					unsigned long extent);
@@ -178,42 +180,45 @@ void __flush_invalidate_region(void *start, int size)
 /*
  * Write back the range of D-cache, and purge the I-cache.
  *
- * Called from kernel/module.c:sys_init_module and routine for a.out format.
+ * Called from kernel/module.c:sys_init_module and routine for a.out format,
+ * signal handler code and kprobes code
  */
 void flush_icache_range(unsigned long start, unsigned long end)
 {
-	flush_cache_all();
-}
-
-/*
- * Write back the D-cache and purge the I-cache for signal trampoline.
- * .. which happens to be the same behavior as flush_icache_range().
- * So, we simply flush out a line.
- */
-void __uses_jump_to_uncached flush_cache_sigtramp(unsigned long addr)
-{
-	unsigned long v, index;
-	unsigned long flags;
+	int icacheaddr;
+	unsigned long flags, v;
 	int i;
 
-	v = addr & ~(L1_CACHE_BYTES-1);
-	asm volatile("ocbwb	%0"
-		     : /* no output */
-		     : "m" (__m(v)));
-
-	index = CACHE_IC_ADDRESS_ARRAY |
-			(v & boot_cpu_data.icache.entry_mask);
-
-	local_irq_save(flags);
-	jump_to_uncached();
-
-	for (i = 0; i < boot_cpu_data.icache.ways;
-	     i++, index += boot_cpu_data.icache.way_incr)
-		ctrl_outl(0, index);	/* Clear out Valid-bit */
-
-	back_to_cached();
-	wmb();
-	local_irq_restore(flags);
+       /* If there are too many pages then just blow the caches */
+        if (((end - start) >> PAGE_SHIFT) >= MAX_ICACHE_PAGES) {
+                flush_cache_all();
+       } else {
+               /* selectively flush d-cache then invalidate the i-cache */
+               /* this is inefficient, so only use for small ranges */
+               start &= ~(L1_CACHE_BYTES-1);
+               end += L1_CACHE_BYTES-1;
+               end &= ~(L1_CACHE_BYTES-1);
+
+               local_irq_save(flags);
+               jump_to_uncached();
+
+               for (v = start; v < end; v+=L1_CACHE_BYTES) {
+                       asm volatile("ocbwb     %0"
+                                    : /* no output */
+                                    : "m" (__m(v)));
+
+                       icacheaddr = CACHE_IC_ADDRESS_ARRAY | (
+                                       v & cpu_data->icache.entry_mask);
+
+                       for (i = 0; i < cpu_data->icache.ways;
+                               i++, icacheaddr += cpu_data->icache.way_incr)
+                                       /* Clear i-cache line valid-bit */
+                                       ctrl_outl(0, icacheaddr);
+               }
+
+		back_to_cached();
+		local_irq_restore(flags);
+	}
 }
 
 static inline void flush_cache_4096(unsigned long start,
diff --git a/arch/sh/mm/consistent.c b/arch/sh/mm/consistent.c
index 3095d95..b2ce014 100644
--- a/arch/sh/mm/consistent.c
+++ b/arch/sh/mm/consistent.c
@@ -10,6 +10,7 @@
  * for more details.
  */
 #include <linux/mm.h>
+#include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
 #include <asm/cacheflush.h>
 #include <asm/addrspace.h>
@@ -93,3 +94,32 @@ void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
 	}
 }
 EXPORT_SYMBOL(dma_cache_sync);
+
+int platform_resource_setup_memory(struct platform_device *pdev,
+				   char *name, unsigned long memsize)
+{
+	struct resource *r;
+	dma_addr_t dma_handle;
+	void *buf;
+
+	r = pdev->resource + pdev->num_resources - 1;
+	if (r->flags) {
+		pr_warning("%s: unable to find empty space for resource\n",
+			name);
+		return -EINVAL;
+	}
+
+	buf = dma_alloc_coherent(NULL, memsize, &dma_handle, GFP_KERNEL);
+	if (!buf) {
+		pr_warning("%s: unable to allocate memory\n", name);
+		return -ENOMEM;
+	}
+
+	memset(buf, 0, memsize);
+
+	r->flags = IORESOURCE_MEM;
+	r->start = dma_handle;
+	r->end = r->start + memsize - 1;
+	r->name = name;
+	return 0;
+}
diff --git a/arch/sh/mm/fault_32.c b/arch/sh/mm/fault_32.c
index d1fa275..0c776fd 100644
--- a/arch/sh/mm/fault_32.c
+++ b/arch/sh/mm/fault_32.c
@@ -37,16 +37,12 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
 	int fault;
 	siginfo_t info;
 
-	trace_hardirqs_on();
-	local_irq_enable();
-
 #ifdef CONFIG_SH_KGDB
 	if (kgdb_nofault && kgdb_bus_err_hook)
 		kgdb_bus_err_hook();
 #endif
 
 	tsk = current;
-	mm = tsk->mm;
 	si_code = SEGV_MAPERR;
 
 	if (unlikely(address >= TASK_SIZE)) {
@@ -88,6 +84,14 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
 		return;
 	}
 
+	/* Only enable interrupts if they were on before the fault */
+	if ((regs->sr & SR_IMASK) != SR_IMASK) {
+		trace_hardirqs_on();
+		local_irq_enable();
+	}
+
+	mm = tsk->mm;
+
 	/*
 	 * If we're in an interrupt or have no user
 	 * context, we must not take the fault..
diff --git a/arch/sh/mm/hugetlbpage.c b/arch/sh/mm/hugetlbpage.c
index ae8c321..9304117 100644
--- a/arch/sh/mm/hugetlbpage.c
+++ b/arch/sh/mm/hugetlbpage.c
@@ -22,7 +22,8 @@
 #include <asm/tlbflush.h>
 #include <asm/cacheflush.h>
 
-pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
+pte_t *huge_pte_alloc(struct mm_struct *mm,
+			unsigned long addr, unsigned long sz)
 {
 	pgd_t *pgd;
 	pud_t *pud;
@@ -78,6 +79,11 @@ int pmd_huge(pmd_t pmd)
 	return 0;
 }
 
+int pud_huge(pud_t pud)
+{
+	return 0;
+}
+
 struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address,
 			     pmd_t *pmd, int write)
 {
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index d7df26b..b75a7ac 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -25,47 +25,6 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
 pgd_t swapper_pg_dir[PTRS_PER_PGD];
 unsigned long cached_to_uncached = 0;
 
-void show_mem(void)
-{
-	int total = 0, reserved = 0, free = 0;
-	int shared = 0, cached = 0, slab = 0;
-	pg_data_t *pgdat;
-
-	printk("Mem-info:\n");
-	show_free_areas();
-
-	for_each_online_pgdat(pgdat) {
-		unsigned long flags, i;
-
-		pgdat_resize_lock(pgdat, &flags);
-		for (i = 0; i < pgdat->node_spanned_pages; i++) {
-			struct page *page = pgdat_page_nr(pgdat, i);
-			total++;
-			if (PageReserved(page))
-				reserved++;
-			else if (PageSwapCache(page))
-				cached++;
-			else if (PageSlab(page))
-				slab++;
-			else if (!page_count(page))
-				free++;
-			else
-				shared += page_count(page) - 1;
-		}
-		pgdat_resize_unlock(pgdat, &flags);
-	}
-
-	printk("Free swap:       %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
-	printk("%d pages of RAM\n", total);
-	printk("%d free pages\n", free);
-	printk("%d reserved pages\n", reserved);
-	printk("%d slab pages\n", slab);
-	printk("%d pages shared\n", shared);
-	printk("%d pages swap cached\n", cached);
-	printk(KERN_INFO "Total of %ld pages in page table cache\n",
-	       quicklist_total_size());
-}
-
 #ifdef CONFIG_MMU
 static void set_pte_phys(unsigned long addr, unsigned long phys, pgprot_t prot)
 {
@@ -191,7 +150,7 @@ void __init paging_init(void)
 		pg_data_t *pgdat = NODE_DATA(nid);
 		unsigned long low, start_pfn;
 
-		start_pfn = pgdat->bdata->node_boot_start >> PAGE_SHIFT;
+		start_pfn = pgdat->bdata->node_min_pfn;
 		low = pgdat->bdata->node_low_pfn;
 
 		if (max_zone_pfns[ZONE_NORMAL] < low)
diff --git a/arch/sh/mm/numa.c b/arch/sh/mm/numa.c
index 1663199..095d93b 100644
--- a/arch/sh/mm/numa.c
+++ b/arch/sh/mm/numa.c
@@ -14,7 +14,6 @@
 #include <linux/pfn.h>
 #include <asm/sections.h>
 
-static bootmem_data_t plat_node_bdata[MAX_NUMNODES];
 struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
 EXPORT_SYMBOL_GPL(node_data);
 
@@ -35,7 +34,7 @@ void __init setup_memory(void)
 	NODE_DATA(0) = pfn_to_kaddr(free_pfn);
 	memset(NODE_DATA(0), 0, sizeof(struct pglist_data));
 	free_pfn += PFN_UP(sizeof(struct pglist_data));
-	NODE_DATA(0)->bdata = &plat_node_bdata[0];
+	NODE_DATA(0)->bdata = &bootmem_node_data[0];
 
 	/* Set up node 0 */
 	setup_bootmem_allocator(free_pfn);
@@ -66,7 +65,7 @@ void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end)
 	free_pfn += PFN_UP(sizeof(struct pglist_data));
 	memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
 
-	NODE_DATA(nid)->bdata = &plat_node_bdata[nid];
+	NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
 	NODE_DATA(nid)->node_start_pfn = start_pfn;
 	NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn;
 
diff --git a/arch/sh/mm/pg-sh4.c b/arch/sh/mm/pg-sh4.c
index 8c7a9ca..38870e0 100644
--- a/arch/sh/mm/pg-sh4.c
+++ b/arch/sh/mm/pg-sh4.c
@@ -111,7 +111,7 @@ EXPORT_SYMBOL(copy_user_highpage);
 /*
  * For SH-4, we have our own implementation for ptep_get_and_clear
  */
-inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 {
 	pte_t pte = *ptep;
 
diff --git a/arch/sh/mm/pg-sh7705.c b/arch/sh/mm/pg-sh7705.c
index 7f885b7..eaf2514 100644
--- a/arch/sh/mm/pg-sh7705.c
+++ b/arch/sh/mm/pg-sh7705.c
@@ -118,7 +118,7 @@ void copy_user_page(void *to, void *from, unsigned long address, struct page *pg
  * For SH7705, we have our own implementation for ptep_get_and_clear
  * Copied from pg-sh4.c
  */
-inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 {
 	pte_t pte = *ptep;
 
diff --git a/arch/sh/mm/pmb.c b/arch/sh/mm/pmb.c
index 0b0ec6e..cef7276 100644
--- a/arch/sh/mm/pmb.c
+++ b/arch/sh/mm/pmb.c
@@ -293,7 +293,7 @@ void pmb_unmap(unsigned long addr)
 	} while (pmbe);
 }
 
-static void pmb_cache_ctor(struct kmem_cache *cachep, void *pmb)
+static void pmb_cache_ctor(void *pmb)
 {
 	struct pmb_entry *pmbe = pmb;
 
@@ -385,7 +385,7 @@ static const struct file_operations pmb_debugfs_fops = {
 	.open		= pmb_debugfs_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
-	.release	= seq_release,
+	.release	= single_release,
 };
 
 static int __init pmb_debugfs_init(void)