diff options
Diffstat (limited to 'arch/um/include/asm')
49 files changed, 247 insertions, 477 deletions
diff --git a/arch/um/include/asm/Kbuild b/arch/um/include/asm/Kbuild new file mode 100644 index 00000000000..a5e4b606821 --- /dev/null +++ b/arch/um/include/asm/Kbuild @@ -0,0 +1,28 @@ +generic-y += barrier.h +generic-y += bug.h +generic-y += clkdev.h +generic-y += cputime.h +generic-y += current.h +generic-y += delay.h +generic-y += device.h +generic-y += emergency-restart.h +generic-y += exec.h +generic-y += ftrace.h +generic-y += futex.h +generic-y += hardirq.h +generic-y += hash.h +generic-y += hw_irq.h +generic-y += io.h +generic-y += irq_regs.h +generic-y += kdebug.h +generic-y += mcs_spinlock.h +generic-y += mutex.h +generic-y += param.h +generic-y += pci.h +generic-y += percpu.h +generic-y += preempt.h +generic-y += sections.h +generic-y += switch_to.h +generic-y += topology.h +generic-y += trace_clock.h +generic-y += xor.h diff --git a/arch/um/include/asm/apic.h b/arch/um/include/asm/apic.h deleted file mode 100644 index 876dee84ab1..00000000000 --- a/arch/um/include/asm/apic.h +++ /dev/null @@ -1,4 +0,0 @@ -#ifndef __UM_APIC_H -#define __UM_APIC_H - -#endif diff --git a/arch/um/include/asm/arch_hweight.h b/arch/um/include/asm/arch_hweight.h deleted file mode 100644 index c656cf443f4..00000000000 --- a/arch/um/include/asm/arch_hweight.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef _ASM_UM_HWEIGHT_H -#define _ASM_UM_HWEIGHT_H - -#include <asm-generic/bitops/arch_hweight.h> - -#endif diff --git a/arch/um/include/asm/asm-offsets.h b/arch/um/include/asm/asm-offsets.h deleted file mode 100644 index d370ee36a18..00000000000 --- a/arch/um/include/asm/asm-offsets.h +++ /dev/null @@ -1 +0,0 @@ -#include <generated/asm-offsets.h> diff --git a/arch/um/include/asm/auxvec.h b/arch/um/include/asm/auxvec.h deleted file mode 100644 index 1e5e1c2fc9b..00000000000 --- a/arch/um/include/asm/auxvec.h +++ /dev/null @@ -1,4 +0,0 @@ -#ifndef __UM_AUXVEC_H -#define __UM_AUXVEC_H - -#endif diff --git a/arch/um/include/asm/checksum.h b/arch/um/include/asm/checksum.h deleted file mode 100644 index 5b501361e36..00000000000 --- a/arch/um/include/asm/checksum.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __UM_CHECKSUM_H -#define __UM_CHECKSUM_H - -#include "sysdep/checksum.h" - -#endif diff --git a/arch/um/include/asm/common.lds.S b/arch/um/include/asm/common.lds.S index ac55b9efa1c..1dd5bd8a8c5 100644 --- a/arch/um/include/asm/common.lds.S +++ b/arch/um/include/asm/common.lds.S @@ -42,7 +42,7 @@ INIT_SETUP(0) } - PERCPU(32) + PERCPU_SECTION(32) .initcall.init : { INIT_CALLS @@ -57,7 +57,6 @@ *(.uml.initcall.init) __uml_initcall_end = .; } - __init_end = .; SECURITY_INIT diff --git a/arch/um/include/asm/cputime.h b/arch/um/include/asm/cputime.h deleted file mode 100644 index c84acbadfa2..00000000000 --- a/arch/um/include/asm/cputime.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __UM_CPUTIME_H -#define __UM_CPUTIME_H - -#include <asm-generic/cputime.h> - -#endif /* __UM_CPUTIME_H */ diff --git a/arch/um/include/asm/current.h b/arch/um/include/asm/current.h deleted file mode 100644 index c2191d9aa03..00000000000 --- a/arch/um/include/asm/current.h +++ /dev/null @@ -1,13 +0,0 @@ -/* - * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * Licensed under the GPL - */ - -#ifndef __UM_CURRENT_H -#define __UM_CURRENT_H - -#include "linux/thread_info.h" - -#define current (current_thread_info()->task) - -#endif diff --git a/arch/um/include/asm/delay.h b/arch/um/include/asm/delay.h deleted file mode 100644 index c71e32b6741..00000000000 --- a/arch/um/include/asm/delay.h +++ /dev/null @@ -1,20 +0,0 @@ -#ifndef __UM_DELAY_H -#define __UM_DELAY_H - -#define MILLION 1000000 - -/* Undefined on purpose */ -extern void __bad_udelay(void); - -extern void __udelay(unsigned long usecs); -extern void __delay(unsigned long loops); - -#define udelay(n) ((__builtin_constant_p(n) && (n) > 20000) ? \ - __bad_udelay() : __udelay(n)) - -/* It appears that ndelay is not used at all for UML, and has never been - * implemented. */ -extern void __unimplemented_ndelay(void); -#define ndelay(n) __unimplemented_ndelay() - -#endif diff --git a/arch/um/include/asm/desc.h b/arch/um/include/asm/desc.h deleted file mode 100644 index 4ec34a51b62..00000000000 --- a/arch/um/include/asm/desc.h +++ /dev/null @@ -1,16 +0,0 @@ -#ifndef __UM_DESC_H -#define __UM_DESC_H - -/* Taken from asm-i386/desc.h, it's the only thing we need. The rest wouldn't - * compile, and has never been used. */ -#define LDT_empty(info) (\ - (info)->base_addr == 0 && \ - (info)->limit == 0 && \ - (info)->contents == 0 && \ - (info)->read_exec_only == 1 && \ - (info)->seg_32bit == 0 && \ - (info)->limit_in_pages == 0 && \ - (info)->seg_not_present == 1 && \ - (info)->useable == 0 ) - -#endif diff --git a/arch/um/include/asm/device.h b/arch/um/include/asm/device.h deleted file mode 100644 index d8f9872b0e2..00000000000 --- a/arch/um/include/asm/device.h +++ /dev/null @@ -1,7 +0,0 @@ -/* - * Arch specific extensions to struct device - * - * This file is released under the GPLv2 - */ -#include <asm-generic/device.h> - diff --git a/arch/um/include/asm/dma.h b/arch/um/include/asm/dma.h index 9f6139a8a52..f88c5860520 100644 --- a/arch/um/include/asm/dma.h +++ b/arch/um/include/asm/dma.h @@ -1,7 +1,7 @@ #ifndef __UM_DMA_H #define __UM_DMA_H -#include "asm/io.h" +#include <asm/io.h> extern unsigned long uml_physmem; diff --git a/arch/um/include/asm/emergency-restart.h b/arch/um/include/asm/emergency-restart.h deleted file mode 100644 index 108d8c48e42..00000000000 --- a/arch/um/include/asm/emergency-restart.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef _ASM_EMERGENCY_RESTART_H -#define _ASM_EMERGENCY_RESTART_H - -#include <asm-generic/emergency-restart.h> - -#endif /* _ASM_EMERGENCY_RESTART_H */ diff --git a/arch/um/include/asm/fixmap.h b/arch/um/include/asm/fixmap.h index 69c0252345f..3094ea3c73b 100644 --- a/arch/um/include/asm/fixmap.h +++ b/arch/um/include/asm/fixmap.h @@ -2,7 +2,6 @@ #define __UM_FIXMAP_H #include <asm/processor.h> -#include <asm/system.h> #include <asm/kmap_types.h> #include <asm/archparam.h> #include <asm/page.h> @@ -44,13 +43,6 @@ enum fixed_addresses { extern void __set_fixmap (enum fixed_addresses idx, unsigned long phys, pgprot_t flags); -#define set_fixmap(idx, phys) \ - __set_fixmap(idx, phys, PAGE_KERNEL) -/* - * Some hardware wants to get fixmapped without caching. - */ -#define set_fixmap_nocache(idx, phys) \ - __set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE) /* * used by vmalloc.c. * @@ -63,37 +55,6 @@ extern void __set_fixmap (enum fixed_addresses idx, #define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT) #define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE) -#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT)) -#define __virt_to_fix(x) ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT) - -extern void __this_fixmap_does_not_exist(void); - -/* - * 'index to address' translation. If anyone tries to use the idx - * directly without tranlation, we catch the bug with a NULL-deference - * kernel oops. Illegal ranges of incoming indices are caught too. - */ -static inline unsigned long fix_to_virt(const unsigned int idx) -{ - /* - * this branch gets completely eliminated after inlining, - * except when someone tries to use fixaddr indices in an - * illegal way. (such as mixing up address types or using - * out-of-range indices). - * - * If it doesn't get removed, the linker will complain - * loudly with a reasonably clear error message.. - */ - if (idx >= __end_of_fixed_addresses) - __this_fixmap_does_not_exist(); - - return __fix_to_virt(idx); -} - -static inline unsigned long virt_to_fix(const unsigned long vaddr) -{ - BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START); - return __virt_to_fix(vaddr); -} +#include <asm-generic/fixmap.h> #endif diff --git a/arch/um/include/asm/ftrace.h b/arch/um/include/asm/ftrace.h deleted file mode 100644 index 40a8c178f10..00000000000 --- a/arch/um/include/asm/ftrace.h +++ /dev/null @@ -1 +0,0 @@ -/* empty */ diff --git a/arch/um/include/asm/futex.h b/arch/um/include/asm/futex.h deleted file mode 100644 index 6a332a9f099..00000000000 --- a/arch/um/include/asm/futex.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef _ASM_FUTEX_H -#define _ASM_FUTEX_H - -#include <asm-generic/futex.h> - -#endif diff --git a/arch/um/include/asm/hardirq.h b/arch/um/include/asm/hardirq.h deleted file mode 100644 index fb3c05a0cbb..00000000000 --- a/arch/um/include/asm/hardirq.h +++ /dev/null @@ -1 +0,0 @@ -#include <asm-generic/hardirq.h> diff --git a/arch/um/include/asm/hw_irq.h b/arch/um/include/asm/hw_irq.h deleted file mode 100644 index 1cf84cf5f21..00000000000 --- a/arch/um/include/asm/hw_irq.h +++ /dev/null @@ -1,7 +0,0 @@ -#ifndef _ASM_UM_HW_IRQ_H -#define _ASM_UM_HW_IRQ_H - -#include "asm/irq.h" -#include "asm/archparam.h" - -#endif diff --git a/arch/um/include/asm/io.h b/arch/um/include/asm/io.h deleted file mode 100644 index 44e8b8c772a..00000000000 --- a/arch/um/include/asm/io.h +++ /dev/null @@ -1,57 +0,0 @@ -#ifndef __UM_IO_H -#define __UM_IO_H - -#include "asm/page.h" - -#define IO_SPACE_LIMIT 0xdeadbeef /* Sure hope nothing uses this */ - -static inline int inb(unsigned long i) { return(0); } -static inline void outb(char c, unsigned long i) { } - -/* - * Change virtual addresses to physical addresses and vv. - * These are pretty trivial - */ -static inline unsigned long virt_to_phys(volatile void * address) -{ - return __pa((void *) address); -} - -static inline void * phys_to_virt(unsigned long address) -{ - return __va(address); -} - -/* - * Convert a physical pointer to a virtual kernel pointer for /dev/mem - * access - */ -#define xlate_dev_mem_ptr(p) __va(p) - -/* - * Convert a virtual cached pointer to an uncached pointer - */ -#define xlate_dev_kmem_ptr(p) p - -static inline void writeb(unsigned char b, volatile void __iomem *addr) -{ - *(volatile unsigned char __force *) addr = b; -} -static inline void writew(unsigned short b, volatile void __iomem *addr) -{ - *(volatile unsigned short __force *) addr = b; -} -static inline void writel(unsigned int b, volatile void __iomem *addr) -{ - *(volatile unsigned int __force *) addr = b; -} -static inline void writeq(unsigned int b, volatile void __iomem *addr) -{ - *(volatile unsigned long long __force *) addr = b; -} -#define __raw_writeb writeb -#define __raw_writew writew -#define __raw_writel writel -#define __raw_writeq writeq - -#endif diff --git a/arch/um/include/asm/irq_regs.h b/arch/um/include/asm/irq_regs.h deleted file mode 100644 index 3dd9c0b7027..00000000000 --- a/arch/um/include/asm/irq_regs.h +++ /dev/null @@ -1 +0,0 @@ -#include <asm-generic/irq_regs.h> diff --git a/arch/um/include/asm/irq_vectors.h b/arch/um/include/asm/irq_vectors.h deleted file mode 100644 index 272a81e0ce1..00000000000 --- a/arch/um/include/asm/irq_vectors.h +++ /dev/null @@ -1,10 +0,0 @@ -/* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) - * Licensed under the GPL - */ - -#ifndef __UM_IRQ_VECTORS_H -#define __UM_IRQ_VECTORS_H - -#endif - diff --git a/arch/um/include/asm/irqflags.h b/arch/um/include/asm/irqflags.h index 659b9abdfdb..c780d8a1677 100644 --- a/arch/um/include/asm/irqflags.h +++ b/arch/um/include/asm/irqflags.h @@ -1,6 +1,42 @@ #ifndef __UM_IRQFLAGS_H #define __UM_IRQFLAGS_H -/* Empty for now */ +extern int get_signals(void); +extern int set_signals(int enable); +extern void block_signals(void); +extern void unblock_signals(void); + +static inline unsigned long arch_local_save_flags(void) +{ + return get_signals(); +} + +static inline void arch_local_irq_restore(unsigned long flags) +{ + set_signals(flags); +} + +static inline void arch_local_irq_enable(void) +{ + unblock_signals(); +} + +static inline void arch_local_irq_disable(void) +{ + block_signals(); +} + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags; + flags = arch_local_save_flags(); + arch_local_irq_disable(); + return flags; +} + +static inline bool arch_irqs_disabled(void) +{ + return arch_local_save_flags() == 0; +} #endif diff --git a/arch/um/include/asm/kdebug.h b/arch/um/include/asm/kdebug.h deleted file mode 100644 index 6ece1b03766..00000000000 --- a/arch/um/include/asm/kdebug.h +++ /dev/null @@ -1 +0,0 @@ -#include <asm-generic/kdebug.h> diff --git a/arch/um/include/asm/kmap_types.h b/arch/um/include/asm/kmap_types.h index 6c03acdb440..2e0a6b1d830 100644 --- a/arch/um/include/asm/kmap_types.h +++ b/arch/um/include/asm/kmap_types.h @@ -8,22 +8,6 @@ /* No more #include "asm/arch/kmap_types.h" ! */ -enum km_type { - KM_BOUNCE_READ, - KM_SKB_SUNRPC_DATA, - KM_SKB_DATA_SOFTIRQ, - KM_USER0, - KM_USER1, - KM_UML_USERCOPY, /* UML specific, for copy_*_user - used in do_op_one_page */ - KM_BIO_SRC_IRQ, - KM_BIO_DST_IRQ, - KM_PTE0, - KM_PTE1, - KM_IRQ0, - KM_IRQ1, - KM_SOFTIRQ0, - KM_SOFTIRQ1, - KM_TYPE_NR -}; +#define KM_TYPE_NR 14 #endif diff --git a/arch/um/include/asm/kvm_para.h b/arch/um/include/asm/kvm_para.h new file mode 100644 index 00000000000..14fab8f0b95 --- /dev/null +++ b/arch/um/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/um/include/asm/mmu.h b/arch/um/include/asm/mmu.h index cf259de5153..da705448590 100644 --- a/arch/um/include/asm/mmu.h +++ b/arch/um/include/asm/mmu.h @@ -1,12 +1,24 @@ /* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) * Licensed under the GPL */ -#ifndef __MMU_H -#define __MMU_H +#ifndef __ARCH_UM_MMU_H +#define __ARCH_UM_MMU_H -#include "um_mmu.h" +#include <mm_id.h> +#include <asm/mm_context.h> -#endif +typedef struct mm_context { + struct mm_id id; + struct uml_arch_mm_context arch; + struct page *stub_pages[2]; +} mm_context_t; + +extern void __switch_mm(struct mm_id * mm_idp); +/* Avoid tangled inclusion with asm/ldt.h */ +extern long init_new_ldt(struct mm_context *to_mm, struct mm_context *from_mm); +extern void free_ldt(struct mm_context *mm); + +#endif diff --git a/arch/um/include/asm/mmu_context.h b/arch/um/include/asm/mmu_context.h index 34d813011b7..aa4a743dc4a 100644 --- a/arch/um/include/asm/mmu_context.h +++ b/arch/um/include/asm/mmu_context.h @@ -6,15 +6,12 @@ #ifndef __UM_MMU_CONTEXT_H #define __UM_MMU_CONTEXT_H -#include "linux/sched.h" -#include "um_mmu.h" +#include <linux/sched.h> +#include <asm/mmu.h> -extern void arch_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm); +extern void uml_setup_stubs(struct mm_struct *mm); extern void arch_exit_mmap(struct mm_struct *mm); -#define get_mmu_context(task) do ; while(0) -#define activate_context(tsk) do ; while(0) - #define deactivate_mm(tsk,mm) do { } while (0) extern void force_flush_all(void); @@ -26,7 +23,9 @@ static inline void activate_mm(struct mm_struct *old, struct mm_struct *new) * when the new ->mm is used for the first time. */ __switch_mm(&new->context.id); - arch_dup_mmap(old, new); + down_write(&new->mmap_sem); + uml_setup_stubs(new); + up_write(&new->mmap_sem); } static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, @@ -42,6 +41,11 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, } } +static inline void arch_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm) +{ + uml_setup_stubs(mm); +} + static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) { diff --git a/arch/um/include/asm/mutex.h b/arch/um/include/asm/mutex.h deleted file mode 100644 index 458c1f7fbc1..00000000000 --- a/arch/um/include/asm/mutex.h +++ /dev/null @@ -1,9 +0,0 @@ -/* - * Pull in the generic implementation for the mutex fastpath. - * - * TODO: implement optimized primitives instead, or leave the generic - * implementation in place, or pick the atomic_xchg() based generic - * implementation. (see asm-generic/mutex-xchg.h for details) - */ - -#include <asm-generic/mutex-dec.h> diff --git a/arch/um/include/asm/page.h b/arch/um/include/asm/page.h index 4cc9b6cf480..5ff53d9185f 100644 --- a/arch/um/include/asm/page.h +++ b/arch/um/include/asm/page.h @@ -19,7 +19,7 @@ struct page; #include <linux/types.h> -#include <sysdep/vm-flags.h> +#include <asm/vm-flags.h> /* * These are used to make use of C type-checking.. @@ -99,7 +99,7 @@ extern unsigned long uml_physmem; #define __va_space (8*1024*1024) -#include "mem.h" +#include <mem.h> /* Cast to unsigned long before casting to void * to avoid a warning from * mmap_kmem about cutting a long long down to a void *. Not sure that diff --git a/arch/um/include/asm/page_offset.h b/arch/um/include/asm/page_offset.h deleted file mode 100644 index 1c168dfbf35..00000000000 --- a/arch/um/include/asm/page_offset.h +++ /dev/null @@ -1 +0,0 @@ -#define PAGE_OFFSET_RAW (uml_physmem) diff --git a/arch/um/include/asm/param.h b/arch/um/include/asm/param.h deleted file mode 100644 index e44f4e60d16..00000000000 --- a/arch/um/include/asm/param.h +++ /dev/null @@ -1,20 +0,0 @@ -#ifndef _UM_PARAM_H -#define _UM_PARAM_H - -#define EXEC_PAGESIZE 4096 - -#ifndef NOGROUP -#define NOGROUP (-1) -#endif - -#define MAXHOSTNAMELEN 64 /* max length of hostname */ - -#ifdef __KERNEL__ -#define HZ CONFIG_HZ -#define USER_HZ 100 /* .. some user interfaces are in "ticks" */ -#define CLOCKS_PER_SEC (USER_HZ) /* frequency at which times() counts */ -#else -#define HZ 100 -#endif - -#endif diff --git a/arch/um/include/asm/pci.h b/arch/um/include/asm/pci.h deleted file mode 100644 index b44cf59ede1..00000000000 --- a/arch/um/include/asm/pci.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __UM_PCI_H -#define __UM_PCI_H - -#define PCI_DMA_BUS_IS_PHYS (1) - -#endif diff --git a/arch/um/include/asm/pda.h b/arch/um/include/asm/pda.h deleted file mode 100644 index ddcd774fc2a..00000000000 --- a/arch/um/include/asm/pda.h +++ /dev/null @@ -1,21 +0,0 @@ -/* - * Copyright 2003 PathScale, Inc. - * - * Licensed under the GPL - */ - -#ifndef __UM_PDA_X86_64_H -#define __UM_PDA_X86_64_H - -/* XXX */ -struct foo { - unsigned int __softirq_pending; - unsigned int __nmi_count; -}; - -extern struct foo me; - -#define read_pda(me) (&me) - -#endif - diff --git a/arch/um/include/asm/pgalloc.h b/arch/um/include/asm/pgalloc.h index 32c8ce4e151..bf90b2aa200 100644 --- a/arch/um/include/asm/pgalloc.h +++ b/arch/um/include/asm/pgalloc.h @@ -8,8 +8,7 @@ #ifndef __UM_PGALLOC_H #define __UM_PGALLOC_H -#include "linux/mm.h" -#include "asm/fixmap.h" +#include <linux/mm.h> #define pmd_populate_kernel(mm, pmd, pte) \ set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte))) diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h index 41474fb5eee..bf974f712af 100644 --- a/arch/um/include/asm/pgtable.h +++ b/arch/um/include/asm/pgtable.h @@ -23,9 +23,9 @@ pte_present gives true */ #ifdef CONFIG_3_LEVEL_PGTABLES -#include "asm/pgtable-3level.h" +#include <asm/pgtable-3level.h> #else -#include "asm/pgtable-2level.h" +#include <asm/pgtable-2level.h> #endif extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; @@ -271,6 +271,12 @@ static inline void set_pte(pte_t *pteptr, pte_t pteval) } #define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) +#define __HAVE_ARCH_PTE_SAME +static inline int pte_same(pte_t pte_a, pte_t pte_b) +{ + return !((pte_val(pte_a) ^ pte_val(pte_b)) & ~_PAGE_NEWPAGE); +} + /* * Conversion functions: convert a page and protection to a page entry, * and a page entry and page directory to the page they refer to. @@ -346,11 +352,11 @@ extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr); #define update_mmu_cache(vma,address,ptep) do ; while (0) /* Encode and de-code a swap entry */ -#define __swp_type(x) (((x).val >> 4) & 0x3f) +#define __swp_type(x) (((x).val >> 5) & 0x1f) #define __swp_offset(x) ((x).val >> 11) #define __swp_entry(type, offset) \ - ((swp_entry_t) { ((type) << 4) | ((offset) << 11) }) + ((swp_entry_t) { ((type) << 5) | ((offset) << 11) }) #define __pte_to_swp_entry(pte) \ ((swp_entry_t) { pte_val(pte_mkuptodate(pte)) }) #define __swp_entry_to_pte(x) ((pte_t) { (x).val }) diff --git a/arch/um/include/asm/processor-generic.h b/arch/um/include/asm/processor-generic.h index bed668824b5..cbc5edd5a90 100644 --- a/arch/um/include/asm/processor-generic.h +++ b/arch/um/include/asm/processor-generic.h @@ -10,32 +10,23 @@ struct pt_regs; struct task_struct; -#include "asm/ptrace.h" -#include "registers.h" -#include "sysdep/archsetjmp.h" +#include <asm/ptrace.h> +#include <registers.h> +#include <sysdep/archsetjmp.h> + +#include <linux/prefetch.h> struct mm_struct; struct thread_struct { - struct task_struct *saved_task; - /* - * This flag is set to 1 before calling do_fork (and analyzed in - * copy_thread) to mark that we are begin called from userspace (fork / - * vfork / clone), and reset to 0 after. It is left to 0 when called - * from kernelspace (i.e. kernel_thread() or fork_idle(), - * as of 2.6.11). - */ - int forking; struct pt_regs regs; + struct pt_regs *segv_regs; int singlestep_syscall; void *fault_addr; jmp_buf *fault_catcher; struct task_struct *prev_sched; - unsigned long temp_stack; - jmp_buf *exec_buf; struct arch_thread arch; jmp_buf switch_buf; - int mm_count; struct { int op; union { @@ -56,29 +47,17 @@ struct thread_struct { #define INIT_THREAD \ { \ - .forking = 0, \ .regs = EMPTY_REGS, \ .fault_addr = NULL, \ .prev_sched = NULL, \ - .temp_stack = 0, \ - .exec_buf = NULL, \ .arch = INIT_ARCH_THREAD, \ .request = { 0 } \ } -extern struct task_struct *alloc_task_struct(void); - static inline void release_thread(struct task_struct *task) { } -extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); - -static inline void prepare_to_copy(struct task_struct *tsk) -{ -} - - extern unsigned long thread_saved_pc(struct task_struct *t); static inline void mm_copy_segments(struct mm_struct *from_mm, diff --git a/arch/um/include/asm/ptrace-generic.h b/arch/um/include/asm/ptrace-generic.h index b7c5bab9bd7..cb9b3c47ca8 100644 --- a/arch/um/include/asm/ptrace-generic.h +++ b/arch/um/include/asm/ptrace-generic.h @@ -9,8 +9,7 @@ #ifndef __ASSEMBLY__ #include <asm/ptrace-abi.h> -#include <asm/user.h> -#include "sysdep/ptrace.h" +#include <sysdep/ptrace.h> struct pt_regs { struct uml_pt_regs regs; @@ -23,17 +22,10 @@ struct pt_regs { #define PT_REGS_IP(r) UPT_IP(&(r)->regs) #define PT_REGS_SP(r) UPT_SP(&(r)->regs) -#define PT_REG(r, reg) UPT_REG(&(r)->regs, reg) -#define PT_REGS_SET(r, reg, val) UPT_SET(&(r)->regs, reg, val) - -#define PT_REGS_SET_SYSCALL_RETURN(r, res) \ - UPT_SET_SYSCALL_RETURN(&(r)->regs, res) #define PT_REGS_RESTART_SYSCALL(r) UPT_RESTART_SYSCALL(&(r)->regs) #define PT_REGS_SYSCALL_NR(r) UPT_SYSCALL_NR(&(r)->regs) -#define PT_REGS_SC(r) UPT_SC(&(r)->regs) - #define instruction_pointer(regs) PT_REGS_IP(regs) struct task_struct; @@ -42,15 +34,11 @@ extern long subarch_ptrace(struct task_struct *child, long request, unsigned long addr, unsigned long data); extern unsigned long getreg(struct task_struct *child, int regno); extern int putreg(struct task_struct *child, int regno, unsigned long value); -extern int get_fpregs(struct user_i387_struct __user *buf, - struct task_struct *child); -extern int set_fpregs(struct user_i387_struct __user *buf, - struct task_struct *child); - -extern void show_regs(struct pt_regs *regs); extern int arch_copy_tls(struct task_struct *new); extern void clear_flushed_tls(struct task_struct *task); +extern void syscall_trace_enter(struct pt_regs *regs); +extern void syscall_trace_leave(struct pt_regs *regs); #endif diff --git a/arch/um/include/asm/required-features.h b/arch/um/include/asm/required-features.h deleted file mode 100644 index dfb967b2d2f..00000000000 --- a/arch/um/include/asm/required-features.h +++ /dev/null @@ -1,9 +0,0 @@ -#ifndef __UM_REQUIRED_FEATURES_H -#define __UM_REQUIRED_FEATURES_H - -/* - * Nothing to see, just need something for the i386 and x86_64 asm - * headers to include. - */ - -#endif diff --git a/arch/um/include/asm/sections.h b/arch/um/include/asm/sections.h deleted file mode 100644 index 6b0231eefea..00000000000 --- a/arch/um/include/asm/sections.h +++ /dev/null @@ -1,7 +0,0 @@ -#ifndef _UM_SECTIONS_H -#define _UM_SECTIONS_H - -/* nothing to see, move along */ -#include <asm-generic/sections.h> - -#endif diff --git a/arch/um/include/asm/segment.h b/arch/um/include/asm/segment.h deleted file mode 100644 index 45183fcd10b..00000000000 --- a/arch/um/include/asm/segment.h +++ /dev/null @@ -1,10 +0,0 @@ -#ifndef __UM_SEGMENT_H -#define __UM_SEGMENT_H - -extern int host_gdt_entry_tls_min; - -#define GDT_ENTRY_TLS_ENTRIES 3 -#define GDT_ENTRY_TLS_MIN host_gdt_entry_tls_min -#define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1) - -#endif diff --git a/arch/um/include/asm/smp.h b/arch/um/include/asm/smp.h index f27a9631317..e4507938d8c 100644 --- a/arch/um/include/asm/smp.h +++ b/arch/um/include/asm/smp.h @@ -3,15 +3,14 @@ #ifdef CONFIG_SMP -#include "linux/bitops.h" -#include "asm/current.h" -#include "linux/cpumask.h" +#include <linux/bitops.h> +#include <asm/current.h> +#include <linux/cpumask.h> #define raw_smp_processor_id() (current_thread->cpu) #define cpu_logical_map(n) (n) #define cpu_number_map(n) (n) -#define PROC_CHANGE_PENALTY 15 /* Pick a number, any number */ extern int hard_smp_processor_id(void); #define NO_PROC_ID -1 diff --git a/arch/um/include/asm/sysrq.h b/arch/um/include/asm/sysrq.h new file mode 100644 index 00000000000..c8d332b56b9 --- /dev/null +++ b/arch/um/include/asm/sysrq.h @@ -0,0 +1,7 @@ +#ifndef __UM_SYSRQ_H +#define __UM_SYSRQ_H + +struct task_struct; +extern void show_trace(struct task_struct* task, unsigned long *stack); + +#endif diff --git a/arch/um/include/asm/system.h b/arch/um/include/asm/system.h deleted file mode 100644 index 68a90ecd145..00000000000 --- a/arch/um/include/asm/system.h +++ /dev/null @@ -1,47 +0,0 @@ -#ifndef __UM_SYSTEM_GENERIC_H -#define __UM_SYSTEM_GENERIC_H - -#include "sysdep/system.h" - -extern int get_signals(void); -extern int set_signals(int enable); -extern void block_signals(void); -extern void unblock_signals(void); - -static inline unsigned long arch_local_save_flags(void) -{ - return get_signals(); -} - -static inline void arch_local_irq_restore(unsigned long flags) -{ - set_signals(flags); -} - -static inline void arch_local_irq_enable(void) -{ - unblock_signals(); -} - -static inline void arch_local_irq_disable(void) -{ - block_signals(); -} - -static inline unsigned long arch_local_irq_save(void) -{ - unsigned long flags; - flags = arch_local_save_flags(); - arch_local_irq_disable(); - return flags; -} - -static inline bool arch_irqs_disabled(void) -{ - return arch_local_save_flags() == 0; -} - -extern void *_switch_to(void *prev, void *next, void *last); -#define switch_to(prev, next, last) prev = _switch_to(prev, next, last) - -#endif diff --git a/arch/um/include/asm/thread_info.h b/arch/um/include/asm/thread_info.h index e2cf786bda0..1c5b2a83046 100644 --- a/arch/um/include/asm/thread_info.h +++ b/arch/um/include/asm/thread_info.h @@ -49,7 +49,10 @@ static inline struct thread_info *current_thread_info(void) { struct thread_info *ti; unsigned long mask = THREAD_SIZE - 1; - ti = (struct thread_info *) (((unsigned long) &ti) & ~mask); + void *p; + + asm volatile ("" : "=r" (p) : "0" (&ti)); + ti = (struct thread_info *) (((unsigned long)p) & ~mask); return ti; } @@ -57,26 +60,19 @@ static inline struct thread_info *current_thread_info(void) #endif -#define PREEMPT_ACTIVE 0x10000000 - #define TIF_SYSCALL_TRACE 0 /* syscall trace active */ #define TIF_SIGPENDING 1 /* signal pending */ #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ -#define TIF_POLLING_NRFLAG 3 /* true if poll_idle() is polling - * TIF_NEED_RESCHED */ #define TIF_RESTART_BLOCK 4 #define TIF_MEMDIE 5 /* is terminating due to OOM killer */ #define TIF_SYSCALL_AUDIT 6 #define TIF_RESTORE_SIGMASK 7 -#define TIF_FREEZE 16 /* is freezing for suspend */ +#define TIF_NOTIFY_RESUME 8 #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) -#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) #define _TIF_MEMDIE (1 << TIF_MEMDIE) #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) -#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) -#define _TIF_FREEZE (1 << TIF_FREEZE) #endif diff --git a/arch/um/include/asm/tlb.h b/arch/um/include/asm/tlb.h index 660caedac9e..16eb63fac57 100644 --- a/arch/um/include/asm/tlb.h +++ b/arch/um/include/asm/tlb.h @@ -22,9 +22,6 @@ struct mmu_gather { unsigned int fullmm; /* non-zero means full mm flush */ }; -/* Users of the generic TLB shootdown code must declare this storage space. */ -DECLARE_PER_CPU(struct mmu_gather, mmu_gathers); - static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep, unsigned long address) { @@ -47,33 +44,40 @@ static inline void init_tlb_gather(struct mmu_gather *tlb) } } -/* tlb_gather_mmu - * Return a pointer to an initialized struct mmu_gather. - */ -static inline struct mmu_gather * -tlb_gather_mmu(struct mm_struct *mm, unsigned int full_mm_flush) +static inline void +tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, unsigned long start, unsigned long end) { - struct mmu_gather *tlb = &get_cpu_var(mmu_gathers); - tlb->mm = mm; - tlb->fullmm = full_mm_flush; + tlb->start = start; + tlb->end = end; + tlb->fullmm = !(start | (end+1)); init_tlb_gather(tlb); - - return tlb; } extern void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start, unsigned long end); static inline void -tlb_flush_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end) +tlb_flush_mmu_tlbonly(struct mmu_gather *tlb) +{ + flush_tlb_mm_range(tlb->mm, tlb->start, tlb->end); +} + +static inline void +tlb_flush_mmu_free(struct mmu_gather *tlb) +{ + init_tlb_gather(tlb); +} + +static inline void +tlb_flush_mmu(struct mmu_gather *tlb) { if (!tlb->need_flush) return; - flush_tlb_mm_range(tlb->mm, tlb->start, tlb->end); - init_tlb_gather(tlb); + tlb_flush_mmu_tlbonly(tlb); + tlb_flush_mmu_free(tlb); } /* tlb_finish_mmu @@ -83,12 +87,10 @@ tlb_flush_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end) static inline void tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end) { - tlb_flush_mmu(tlb, start, end); + tlb_flush_mmu(tlb); /* keep the page table cache within bounds */ check_pgt_cache(); - - put_cpu_var(mmu_gathers); } /* tlb_remove_page @@ -96,11 +98,16 @@ tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end) * while handling the additional races in SMP caused by other CPUs * caching valid mappings in their TLBs. */ -static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page) +static inline int __tlb_remove_page(struct mmu_gather *tlb, struct page *page) { tlb->need_flush = 1; free_page_and_swap_cache(page); - return; + return 1; /* avoid calling tlb_flush_mmu */ +} + +static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page) +{ + __tlb_remove_page(tlb, page); } /** diff --git a/arch/um/include/asm/topology.h b/arch/um/include/asm/topology.h deleted file mode 100644 index 0905e4f21d4..00000000000 --- a/arch/um/include/asm/topology.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef _ASM_UM_TOPOLOGY_H -#define _ASM_UM_TOPOLOGY_H - -#include <asm-generic/topology.h> - -#endif diff --git a/arch/um/include/asm/uaccess.h b/arch/um/include/asm/uaccess.h index b9a895d6fa1..3f22fbf7ca1 100644 --- a/arch/um/include/asm/uaccess.h +++ b/arch/um/include/asm/uaccess.h @@ -6,15 +6,15 @@ #ifndef __UM_UACCESS_H #define __UM_UACCESS_H -#include <asm/errno.h> -#include <asm/processor.h> - /* thread_info has a mm_segment_t in it, so put the definition up here */ typedef struct { unsigned long seg; } mm_segment_t; -#include "linux/thread_info.h" +#include <linux/thread_info.h> +#include <linux/errno.h> +#include <asm/processor.h> +#include <asm/elf.h> #define VERIFY_READ 0 #define VERIFY_WRITE 1 @@ -38,7 +38,86 @@ typedef struct { #define segment_eq(a, b) ((a).seg == (b).seg) -#include "um_uaccess.h" +#define __under_task_size(addr, size) \ + (((unsigned long) (addr) < TASK_SIZE) && \ + (((unsigned long) (addr) + (size)) < TASK_SIZE)) + +#define __access_ok_vsyscall(type, addr, size) \ + ((type == VERIFY_READ) && \ + ((unsigned long) (addr) >= FIXADDR_USER_START) && \ + ((unsigned long) (addr) + (size) <= FIXADDR_USER_END) && \ + ((unsigned long) (addr) + (size) >= (unsigned long)(addr))) + +#define __addr_range_nowrap(addr, size) \ + ((unsigned long) (addr) <= ((unsigned long) (addr) + (size))) + +#define access_ok(type, addr, size) \ + (__addr_range_nowrap(addr, size) && \ + (__under_task_size(addr, size) || \ + __access_ok_vsyscall(type, addr, size) || \ + segment_eq(get_fs(), KERNEL_DS))) + +extern int copy_from_user(void *to, const void __user *from, int n); +extern int copy_to_user(void __user *to, const void *from, int n); + +/* + * strncpy_from_user: - Copy a NUL terminated string from userspace. + * @dst: Destination address, in kernel space. This buffer must be at + * least @count bytes long. + * @src: Source address, in user space. + * @count: Maximum number of bytes to copy, including the trailing NUL. + * + * Copies a NUL-terminated string from userspace to kernel space. + * + * On success, returns the length of the string (not including the trailing + * NUL). + * + * If access to userspace fails, returns -EFAULT (some data may have been + * copied). + * + * If @count is smaller than the length of the string, copies @count bytes + * and returns @count. + */ + +extern int strncpy_from_user(char *dst, const char __user *src, int count); + +/* + * __clear_user: - Zero a block of memory in user space, with less checking. + * @to: Destination address, in user space. + * @n: Number of bytes to zero. + * + * Zero a block of memory in user space. Caller must check + * the specified block with access_ok() before calling this function. + * + * Returns number of bytes that could not be cleared. + * On success, this will be zero. + */ +extern int __clear_user(void __user *mem, int len); + +/* + * clear_user: - Zero a block of memory in user space. + * @to: Destination address, in user space. + * @n: Number of bytes to zero. + * + * Zero a block of memory in user space. + * + * Returns number of bytes that could not be cleared. + * On success, this will be zero. + */ +extern int clear_user(void __user *mem, int len); + +/* + * strlen_user: - Get the size of a string in user space. + * @str: The string to measure. + * @n: The maximum valid length + * + * Get the size of a NUL-terminated string in user space. + * + * Returns the size of the string INCLUDING the terminating NUL. + * On exception, returns 0. + * If the string is too long, returns a value greater than @n. + */ +extern int strnlen_user(const void __user *str, int len); #define __copy_from_user(to, from, n) copy_from_user(to, from, n) diff --git a/arch/um/include/asm/xor.h b/arch/um/include/asm/xor.h deleted file mode 100644 index a19db3e1724..00000000000 --- a/arch/um/include/asm/xor.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __UM_XOR_H -#define __UM_XOR_H - -#include "asm-generic/xor.h" - -#endif |