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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-09 22:00:58 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-09 22:00:58 (GMT) |
commit | c40f6f8bbc4cbd2902671aacd587400ddca62627 (patch) | |
tree | a991e5521e10943f4457fb7f494e00aec75cc7df /arch | |
parent | 1a7d0f0bec4be078ce2cfb11538c0f4ffbbed8e5 (diff) | |
parent | cb6ff208076b5f434db1b8c983429269d719cef5 (diff) | |
download | linux-fsl-qoriq-c40f6f8bbc4cbd2902671aacd587400ddca62627.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-nommu
* git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-nommu:
NOMMU: Support XIP on initramfs
NOMMU: Teach kobjsize() about VMA regions.
FLAT: Don't attempt to expand the userspace stack to fill the space allocated
FDPIC: Don't attempt to expand the userspace stack to fill the space allocated
NOMMU: Improve procfs output using per-MM VMAs
NOMMU: Make mmap allocation page trimming behaviour configurable.
NOMMU: Make VMAs per MM as for MMU-mode linux
NOMMU: Delete askedalloc and realalloc variables
NOMMU: Rename ARM's struct vm_region
NOMMU: Fix cleanup handling in ramfs_nommu_get_umapped_area()
Diffstat (limited to 'arch')
-rw-r--r-- | arch/arm/include/asm/mmu.h | 1 | ||||
-rw-r--r-- | arch/arm/mm/dma-mapping.c | 28 | ||||
-rw-r--r-- | arch/blackfin/include/asm/mmu.h | 1 | ||||
-rw-r--r-- | arch/blackfin/kernel/ptrace.c | 6 | ||||
-rw-r--r-- | arch/blackfin/kernel/traps.c | 11 | ||||
-rw-r--r-- | arch/frv/kernel/ptrace.c | 11 | ||||
-rw-r--r-- | arch/h8300/include/asm/mmu.h | 1 | ||||
-rw-r--r-- | arch/m68knommu/include/asm/mmu.h | 1 | ||||
-rw-r--r-- | arch/sh/include/asm/mmu.h | 1 |
9 files changed, 29 insertions, 32 deletions
diff --git a/arch/arm/include/asm/mmu.h b/arch/arm/include/asm/mmu.h index 53099d4..b561584 100644 --- a/arch/arm/include/asm/mmu.h +++ b/arch/arm/include/asm/mmu.h @@ -24,7 +24,6 @@ typedef struct { * modified for 2.6 by Hyok S. Choi <hyok.choi@samsung.com> */ typedef struct { - struct vm_list_struct *vmlist; unsigned long end_brk; } mm_context_t; diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 6796001..310e479 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -71,7 +71,7 @@ static DEFINE_SPINLOCK(consistent_lock); * the amount of RAM found at boot time.) I would imagine that get_vm_area() * would have to initialise this each time prior to calling vm_region_alloc(). */ -struct vm_region { +struct arm_vm_region { struct list_head vm_list; unsigned long vm_start; unsigned long vm_end; @@ -79,20 +79,20 @@ struct vm_region { int vm_active; }; -static struct vm_region consistent_head = { +static struct arm_vm_region consistent_head = { .vm_list = LIST_HEAD_INIT(consistent_head.vm_list), .vm_start = CONSISTENT_BASE, .vm_end = CONSISTENT_END, }; -static struct vm_region * -vm_region_alloc(struct vm_region *head, size_t size, gfp_t gfp) +static struct arm_vm_region * +arm_vm_region_alloc(struct arm_vm_region *head, size_t size, gfp_t gfp) { unsigned long addr = head->vm_start, end = head->vm_end - size; unsigned long flags; - struct vm_region *c, *new; + struct arm_vm_region *c, *new; - new = kmalloc(sizeof(struct vm_region), gfp); + new = kmalloc(sizeof(struct arm_vm_region), gfp); if (!new) goto out; @@ -127,9 +127,9 @@ vm_region_alloc(struct vm_region *head, size_t size, gfp_t gfp) return NULL; } -static struct vm_region *vm_region_find(struct vm_region *head, unsigned long addr) +static struct arm_vm_region *arm_vm_region_find(struct arm_vm_region *head, unsigned long addr) { - struct vm_region *c; + struct arm_vm_region *c; list_for_each_entry(c, &head->vm_list, vm_list) { if (c->vm_active && c->vm_start == addr) @@ -149,7 +149,7 @@ __dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp, pgprot_t prot) { struct page *page; - struct vm_region *c; + struct arm_vm_region *c; unsigned long order; u64 mask = ISA_DMA_THRESHOLD, limit; @@ -214,7 +214,7 @@ __dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp, /* * Allocate a virtual address in the consistent mapping region. */ - c = vm_region_alloc(&consistent_head, size, + c = arm_vm_region_alloc(&consistent_head, size, gfp & ~(__GFP_DMA | __GFP_HIGHMEM)); if (c) { pte_t *pte; @@ -311,13 +311,13 @@ static int dma_mmap(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t dma_addr, size_t size) { unsigned long flags, user_size, kern_size; - struct vm_region *c; + struct arm_vm_region *c; int ret = -ENXIO; user_size = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; spin_lock_irqsave(&consistent_lock, flags); - c = vm_region_find(&consistent_head, (unsigned long)cpu_addr); + c = arm_vm_region_find(&consistent_head, (unsigned long)cpu_addr); spin_unlock_irqrestore(&consistent_lock, flags); if (c) { @@ -359,7 +359,7 @@ EXPORT_SYMBOL(dma_mmap_writecombine); */ void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, dma_addr_t handle) { - struct vm_region *c; + struct arm_vm_region *c; unsigned long flags, addr; pte_t *ptep; int idx; @@ -378,7 +378,7 @@ void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, dma_addr size = PAGE_ALIGN(size); spin_lock_irqsave(&consistent_lock, flags); - c = vm_region_find(&consistent_head, (unsigned long)cpu_addr); + c = arm_vm_region_find(&consistent_head, (unsigned long)cpu_addr); if (!c) goto no_area; diff --git a/arch/blackfin/include/asm/mmu.h b/arch/blackfin/include/asm/mmu.h index 757e439..dbfd686 100644 --- a/arch/blackfin/include/asm/mmu.h +++ b/arch/blackfin/include/asm/mmu.h @@ -10,7 +10,6 @@ struct sram_list_struct { }; typedef struct { - struct vm_list_struct *vmlist; unsigned long end_brk; unsigned long stack_start; diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c index d2d3885..594e325 100644 --- a/arch/blackfin/kernel/ptrace.c +++ b/arch/blackfin/kernel/ptrace.c @@ -160,15 +160,15 @@ put_reg(struct task_struct *task, int regno, unsigned long data) static inline int is_user_addr_valid(struct task_struct *child, unsigned long start, unsigned long len) { - struct vm_list_struct *vml; + struct vm_area_struct *vma; struct sram_list_struct *sraml; /* overflow */ if (start + len < start) return -EIO; - for (vml = child->mm->context.vmlist; vml; vml = vml->next) - if (start >= vml->vma->vm_start && start + len < vml->vma->vm_end) + vma = find_vma(child->mm, start); + if (vma && start >= vma->vm_start && start + len <= vma->vm_end) return 0; for (sraml = child->mm->context.sram_list; sraml; sraml = sraml->next) diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c index 17d8e41..5b0667d 100644 --- a/arch/blackfin/kernel/traps.c +++ b/arch/blackfin/kernel/traps.c @@ -32,6 +32,7 @@ #include <linux/module.h> #include <linux/kallsyms.h> #include <linux/fs.h> +#include <linux/rbtree.h> #include <asm/traps.h> #include <asm/cacheflush.h> #include <asm/cplb.h> @@ -83,6 +84,7 @@ static void decode_address(char *buf, unsigned long address) struct mm_struct *mm; unsigned long flags, offset; unsigned char in_atomic = (bfin_read_IPEND() & 0x10) || in_atomic(); + struct rb_node *n; #ifdef CONFIG_KALLSYMS unsigned long symsize; @@ -128,9 +130,10 @@ static void decode_address(char *buf, unsigned long address) if (!mm) continue; - vml = mm->context.vmlist; - while (vml) { - struct vm_area_struct *vma = vml->vma; + for (n = rb_first(&mm->mm_rb); n; n = rb_next(n)) { + struct vm_area_struct *vma; + + vma = rb_entry(n, struct vm_area_struct, vm_rb); if (address >= vma->vm_start && address < vma->vm_end) { char _tmpbuf[256]; @@ -176,8 +179,6 @@ static void decode_address(char *buf, unsigned long address) goto done; } - - vml = vml->next; } if (!in_atomic) mmput(mm); diff --git a/arch/frv/kernel/ptrace.c b/arch/frv/kernel/ptrace.c index 709e9bd..5e7d401 100644 --- a/arch/frv/kernel/ptrace.c +++ b/arch/frv/kernel/ptrace.c @@ -69,7 +69,8 @@ static inline int put_reg(struct task_struct *task, int regno, } /* - * check that an address falls within the bounds of the target process's memory mappings + * check that an address falls within the bounds of the target process's memory + * mappings */ static inline int is_user_addr_valid(struct task_struct *child, unsigned long start, unsigned long len) @@ -79,11 +80,11 @@ static inline int is_user_addr_valid(struct task_struct *child, return -EIO; return 0; #else - struct vm_list_struct *vml; + struct vm_area_struct *vma; - for (vml = child->mm->context.vmlist; vml; vml = vml->next) - if (start >= vml->vma->vm_start && start + len <= vml->vma->vm_end) - return 0; + vma = find_vma(child->mm, start); + if (vma && start >= vma->vm_start && start + len <= vma->vm_end) + return 0; return -EIO; #endif diff --git a/arch/h8300/include/asm/mmu.h b/arch/h8300/include/asm/mmu.h index 2ce06ea..3130996 100644 --- a/arch/h8300/include/asm/mmu.h +++ b/arch/h8300/include/asm/mmu.h @@ -4,7 +4,6 @@ /* Copyright (C) 2002, David McCullough <davidm@snapgear.com> */ typedef struct { - struct vm_list_struct *vmlist; unsigned long end_brk; } mm_context_t; diff --git a/arch/m68knommu/include/asm/mmu.h b/arch/m68knommu/include/asm/mmu.h index 5fa6b68..e2da1e6 100644 --- a/arch/m68knommu/include/asm/mmu.h +++ b/arch/m68knommu/include/asm/mmu.h @@ -4,7 +4,6 @@ /* Copyright (C) 2002, David McCullough <davidm@snapgear.com> */ typedef struct { - struct vm_list_struct *vmlist; unsigned long end_brk; } mm_context_t; diff --git a/arch/sh/include/asm/mmu.h b/arch/sh/include/asm/mmu.h index fdcb93b..6c43625 100644 --- a/arch/sh/include/asm/mmu.h +++ b/arch/sh/include/asm/mmu.h @@ -9,7 +9,6 @@ typedef struct { mm_context_id_t id; void *vdso; #else - struct vm_list_struct *vmlist; unsigned long end_brk; #endif #ifdef CONFIG_BINFMT_ELF_FDPIC |