---

yaml
---
r: 22681
b: refs/heads/master
c: 8b4b670
h: refs/heads/master
i:
  22679: 189fb88
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 116f232b3794a8b6ebde21aef5004b18cc1cfa86
+refs/heads/master: 8b4b6707ee32f929846d947d18b1b9bf42e988aa

trunk/MAINTAINERS

@@ -2145,7 +2145,7 @@ S:	Maintained
 
 QLOGIC QLA2XXX FC-SCSI DRIVER
 P:	Andrew Vasquez
-M:	andrew.vasquez@qlogic.com
+M:	linux-driver@qlogic.com
 L:	linux-scsi@vger.kernel.org
 S:	Supported
 

trunk/arch/alpha/mm/init.c

@@ -357,7 +357,7 @@ free_reserved_mem(void *start, void *end)
 	void *__start = start;
 	for (; __start < end; __start += PAGE_SIZE) {
 		ClearPageReserved(virt_to_page(__start));
-		set_page_count(virt_to_page(__start), 1);
+		init_page_count(virt_to_page(__start));
 		free_page((long)__start);
 		totalram_pages++;
 	}

trunk/arch/arm/mm/consistent.c

@@ -223,6 +223,8 @@ __dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp,
 		pte = consistent_pte[idx] + off;
 		c->vm_pages = page;
 
+		split_page(page, order);
+
 		/*
 		 * Set the "dma handle"
 		 */
@@ -231,7 +233,6 @@ __dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp,
 		do {
 			BUG_ON(!pte_none(*pte));
 
-			set_page_count(page, 1);
 			/*
 			 * x86 does not mark the pages reserved...
 			 */
@@ -250,7 +251,6 @@ __dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp,
 		 * Free the otherwise unused pages.
 		 */
 		while (page < end) {
-			set_page_count(page, 1);
 			__free_page(page);
 			page++;
 		}

trunk/arch/arm/mm/init.c

@@ -531,7 +531,7 @@ static inline void free_area(unsigned long addr, unsigned long end, char *s)
 	for (; addr < end; addr += PAGE_SIZE) {
 		struct page *page = virt_to_page(addr);
 		ClearPageReserved(page);
-		set_page_count(page, 1);
+		init_page_count(page);
 		free_page(addr);
 		totalram_pages++;
 	}

trunk/arch/arm26/mm/init.c

@@ -324,7 +324,7 @@ static inline void free_area(unsigned long addr, unsigned long end, char *s)
 	for (; addr < end; addr += PAGE_SIZE) {
 		struct page *page = virt_to_page(addr);
 		ClearPageReserved(page);
-		set_page_count(page, 1);
+		init_page_count(page);
 		free_page(addr);
 		totalram_pages++;
 	}

trunk/arch/cris/mm/init.c

@@ -216,7 +216,7 @@ free_initmem(void)
         addr = (unsigned long)(&__init_begin);
         for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
                 ClearPageReserved(virt_to_page(addr));
-                set_page_count(virt_to_page(addr), 1);
+                init_page_count(virt_to_page(addr));
                 free_page(addr);
                 totalram_pages++;
         }

trunk/arch/frv/kernel/frv_ksyms.c

@@ -27,6 +27,7 @@ EXPORT_SYMBOL(__ioremap);
 EXPORT_SYMBOL(iounmap);
 
 EXPORT_SYMBOL(strnlen);
+EXPORT_SYMBOL(strpbrk);
 EXPORT_SYMBOL(strrchr);
 EXPORT_SYMBOL(strstr);
 EXPORT_SYMBOL(strchr);

trunk/arch/frv/mm/dma-alloc.c

@@ -115,9 +115,7 @@ void *consistent_alloc(gfp_t gfp, size_t size, dma_addr_t *dma_handle)
 	 */
 	if (order > 0) {
 		struct page *rpage = virt_to_page(page);
-
-		for (i = 1; i < (1 << order); i++)
-			set_page_count(rpage + i, 1);
+		split_page(rpage, order);
 	}
 
 	err = 0;

trunk/arch/frv/mm/init.c

@@ -169,7 +169,7 @@ void __init mem_init(void)
 		struct page *page = &mem_map[pfn];
 
 		ClearPageReserved(page);
-		set_page_count(page, 1);
+		init_page_count(page);
 		__free_page(page);
 		totalram_pages++;
 	}
@@ -210,7 +210,7 @@ void __init free_initmem(void)
 	/* next to check that the page we free is not a partial page */
 	for (addr = start; addr < end; addr += PAGE_SIZE) {
 		ClearPageReserved(virt_to_page(addr));
-		set_page_count(virt_to_page(addr), 1);
+		init_page_count(virt_to_page(addr));
 		free_page(addr);
 		totalram_pages++;
 	}
@@ -230,7 +230,7 @@ void __init free_initrd_mem(unsigned long start, unsigned long end)
 	int pages = 0;
 	for (; start < end; start += PAGE_SIZE) {
 		ClearPageReserved(virt_to_page(start));
-		set_page_count(virt_to_page(start), 1);
+		init_page_count(virt_to_page(start));
 		free_page(start);
 		totalram_pages++;
 		pages++;

trunk/arch/h8300/kernel/h8300_ksyms.c

@@ -25,6 +25,7 @@ extern char h8300_debug_device[];
 /* platform dependent support */
 
 EXPORT_SYMBOL(strnlen);
+EXPORT_SYMBOL(strpbrk);
 EXPORT_SYMBOL(strrchr);
 EXPORT_SYMBOL(strstr);
 EXPORT_SYMBOL(strchr);

trunk/arch/h8300/mm/init.c

@@ -196,7 +196,7 @@ void free_initrd_mem(unsigned long start, unsigned long end)
 	int pages = 0;
 	for (; start < end; start += PAGE_SIZE) {
 		ClearPageReserved(virt_to_page(start));
-		set_page_count(virt_to_page(start), 1);
+		init_page_count(virt_to_page(start));
 		free_page(start);
 		totalram_pages++;
 		pages++;
@@ -219,7 +219,7 @@ free_initmem()
 	/* next to check that the page we free is not a partial page */
 	for (; addr + PAGE_SIZE < (unsigned long)(&__init_end); addr +=PAGE_SIZE) {
 		ClearPageReserved(virt_to_page(addr));
-		set_page_count(virt_to_page(addr), 1);
+		init_page_count(virt_to_page(addr));
 		free_page(addr);
 		totalram_pages++;
 	}

trunk/arch/i386/kernel/efi.c

@@ -115,7 +115,7 @@ static void efi_call_phys_epilog(void)
 	unsigned long cr4;
 	struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, 0);
 
-	cpu_gdt_descr->address = __va(cpu_gdt_descr->address);
+	cpu_gdt_descr->address = (unsigned long)__va(cpu_gdt_descr->address);
 	load_gdt(cpu_gdt_descr);
 
 	cr4 = read_cr4();

trunk/arch/i386/kernel/smp.c

@@ -504,27 +504,23 @@ void unlock_ipi_call_lock(void)
 	spin_unlock_irq(&call_lock);
 }
 
-static struct call_data_struct * call_data;
-
-/*
- * this function sends a 'generic call function' IPI to all other CPUs
- * in the system.
- */
-
-int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
-			int wait)
-/*
- * [SUMMARY] Run a function on all other CPUs.
- * <func> The function to run. This must be fast and non-blocking.
- * <info> An arbitrary pointer to pass to the function.
- * <nonatomic> currently unused.
- * <wait> If true, wait (atomically) until function has completed on other CPUs.
- * [RETURNS] 0 on success, else a negative status code. Does not return until
+static struct call_data_struct *call_data;
+
+/**
+ * smp_call_function(): Run a function on all other CPUs.
+ * @func: The function to run. This must be fast and non-blocking.
+ * @info: An arbitrary pointer to pass to the function.
+ * @nonatomic: currently unused.
+ * @wait: If true, wait (atomically) until function has completed on other CPUs.
+ *
+ * Returns 0 on success, else a negative status code. Does not return until
  * remote CPUs are nearly ready to execute <<func>> or are or have executed.
  *
  * You must not call this function with disabled interrupts or from a
  * hardware interrupt handler or from a bottom half handler.
  */
+int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
+			int wait)
 {
 	struct call_data_struct data;
 	int cpus;

trunk/arch/i386/kernel/sys_i386.c

@@ -40,14 +40,13 @@ asmlinkage int sys_pipe(unsigned long __user * fildes)
 	return error;
 }
 
-/* common code for old and new mmaps */
-static inline long do_mmap2(
-	unsigned long addr, unsigned long len,
-	unsigned long prot, unsigned long flags,
-	unsigned long fd, unsigned long pgoff)
+asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
+			  unsigned long prot, unsigned long flags,
+			  unsigned long fd, unsigned long pgoff)
 {
 	int error = -EBADF;
-	struct file * file = NULL;
+	struct file *file = NULL;
+	struct mm_struct *mm = current->mm;
 
 	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
 	if (!(flags & MAP_ANONYMOUS)) {
@@ -56,23 +55,16 @@ static inline long do_mmap2(
 			goto out;
 	}
 
-	down_write(&current->mm->mmap_sem);
+	down_write(&mm->mmap_sem);
 	error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
-	up_write(&current->mm->mmap_sem);
+	up_write(&mm->mmap_sem);
 
 	if (file)
 		fput(file);
 out:
 	return error;
 }
 
-asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
-	unsigned long prot, unsigned long flags,
-	unsigned long fd, unsigned long pgoff)
-{
-	return do_mmap2(addr, len, prot, flags, fd, pgoff);
-}
-
 /*
  * Perform the select(nd, in, out, ex, tv) and mmap() system
  * calls. Linux/i386 didn't use to be able to handle more than
@@ -101,7 +93,8 @@ asmlinkage int old_mmap(struct mmap_arg_struct __user *arg)
 	if (a.offset & ~PAGE_MASK)
 		goto out;
 
-	err = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT);
+	err = sys_mmap2(a.addr, a.len, a.prot, a.flags,
+			a.fd, a.offset >> PAGE_SHIFT);
 out:
 	return err;
 }

trunk/arch/i386/kernel/timers/timer_hpet.c

@@ -46,7 +46,7 @@ static seqlock_t monotonic_lock = SEQLOCK_UNLOCKED;
  *
  *			-johnstul@us.ibm.com "math is hard, lets go shopping!"
  */
-static unsigned long cyc2ns_scale;
+static unsigned long cyc2ns_scale __read_mostly;
 #define CYC2NS_SCALE_FACTOR 10 /* 2^10, carefully chosen */
 
 static inline void set_cyc2ns_scale(unsigned long cpu_khz)

trunk/arch/i386/kernel/timers/timer_tsc.c

@@ -74,7 +74,7 @@ late_initcall(start_lost_tick_compensation);
  *
  *			-johnstul@us.ibm.com "math is hard, lets go shopping!"
  */
-static unsigned long cyc2ns_scale; 
+static unsigned long cyc2ns_scale __read_mostly;
 #define CYC2NS_SCALE_FACTOR 10 /* 2^10, carefully chosen */
 
 static inline void set_cyc2ns_scale(unsigned long cpu_khz)

trunk/arch/i386/mm/hugetlbpage.c

@@ -48,18 +48,6 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
 	return (pte_t *) pmd;
 }
 
-/*
- * This function checks for proper alignment of input addr and len parameters.
- */
-int is_aligned_hugepage_range(unsigned long addr, unsigned long len)
-{
-	if (len & ~HPAGE_MASK)
-		return -EINVAL;
-	if (addr & ~HPAGE_MASK)
-		return -EINVAL;
-	return 0;
-}
-
 #if 0	/* This is just for testing */
 struct page *
 follow_huge_addr(struct mm_struct *mm, unsigned long address, int write)

trunk/arch/i386/mm/init.c

@@ -270,7 +270,7 @@ static void __init permanent_kmaps_init(pgd_t *pgd_base)
 
 static void __meminit free_new_highpage(struct page *page)
 {
-	set_page_count(page, 1);
+	init_page_count(page);
 	__free_page(page);
 	totalhigh_pages++;
 }
@@ -727,7 +727,7 @@ void free_initmem(void)
 	addr = (unsigned long)(&__init_begin);
 	for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
 		ClearPageReserved(virt_to_page(addr));
-		set_page_count(virt_to_page(addr), 1);
+		init_page_count(virt_to_page(addr));
 		memset((void *)addr, 0xcc, PAGE_SIZE);
 		free_page(addr);
 		totalram_pages++;
@@ -766,7 +766,7 @@ void free_initrd_mem(unsigned long start, unsigned long end)
 		printk (KERN_INFO "Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
 	for (; start < end; start += PAGE_SIZE) {
 		ClearPageReserved(virt_to_page(start));
-		set_page_count(virt_to_page(start), 1);
+		init_page_count(virt_to_page(start));
 		free_page(start);
 		totalram_pages++;
 	}

trunk/arch/i386/mm/pageattr.c

@@ -51,6 +51,13 @@ static struct page *split_large_page(unsigned long address, pgprot_t prot,
 	if (!base) 
 		return NULL;
 
+	/*
+	 * page_private is used to track the number of entries in
+	 * the page table page that have non standard attributes.
+	 */
+	SetPagePrivate(base);
+	page_private(base) = 0;
+
 	address = __pa(address);
 	addr = address & LARGE_PAGE_MASK; 
 	pbase = (pte_t *)page_address(base);
@@ -143,11 +150,12 @@ __change_page_attr(struct page *page, pgprot_t prot)
 				return -ENOMEM;
 			set_pmd_pte(kpte,address,mk_pte(split, ref_prot));
 			kpte_page = split;
-		}	
-		get_page(kpte_page);
+		}
+		page_private(kpte_page)++;
 	} else if ((pte_val(*kpte) & _PAGE_PSE) == 0) { 
 		set_pte_atomic(kpte, mk_pte(page, PAGE_KERNEL));
-		__put_page(kpte_page);
+		BUG_ON(page_private(kpte_page) == 0);
+		page_private(kpte_page)--;
 	} else
 		BUG();
 
@@ -157,10 +165,8 @@ __change_page_attr(struct page *page, pgprot_t prot)
 	 * replace it with a largepage.
 	 */
 	if (!PageReserved(kpte_page)) {
-		/* memleak and potential failed 2M page regeneration */
-		BUG_ON(!page_count(kpte_page));
-
-		if (cpu_has_pse && (page_count(kpte_page) == 1)) {
+		if (cpu_has_pse && (page_private(kpte_page) == 0)) {
+			ClearPagePrivate(kpte_page);
 			list_add(&kpte_page->lru, &df_list);
 			revert_page(kpte_page, address);
 		}

trunk/arch/ia64/Kconfig

@@ -271,6 +271,25 @@ config SCHED_SMT
 	  Intel IA64 chips with MultiThreading at a cost of slightly increased
 	  overhead in some places. If unsure say N here.
 
+config PERMIT_BSP_REMOVE
+	bool "Support removal of Bootstrap Processor"
+	depends on HOTPLUG_CPU
+	default n
+	---help---
+	Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
+	support. 
+
+config FORCE_CPEI_RETARGET
+	bool "Force assumption that CPEI can be re-targetted"
+	depends on PERMIT_BSP_REMOVE
+	default n
+	---help---
+	Say Y if you need to force the assumption that CPEI can be re-targetted to
+	any cpu in the system. This hint is available via ACPI 3.0 specifications.
+	Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
+	This option it useful to enable this feature on older BIOS's as well.
+	You can also enable this by using boot command line option force_cpei=1.
+
 config PREEMPT
 	bool "Preemptible Kernel"
         help

trunk/arch/ia64/configs/tiger_defconfig

@@ -116,6 +116,8 @@ CONFIG_FORCE_MAX_ZONEORDER=17
 CONFIG_SMP=y
 CONFIG_NR_CPUS=4
 CONFIG_HOTPLUG_CPU=y
+CONFIG_PERMIT_BSP_REMOVE=y
+CONFIG_FORCE_CPEI_RETARGET=y
 # CONFIG_SCHED_SMT is not set
 # CONFIG_PREEMPT is not set
 CONFIG_SELECT_MEMORY_MODEL=y