From 8192ab42bf60e1e9b7efa046990e9cc5e4a95cf4 Mon Sep 17 00:00:00 2001 From: Jeff Dike Date: Mon, 4 Feb 2008 22:30:53 -0800 Subject: uml: header untangling Untangle UML headers somewhat and add some includes where they were needed explicitly, but gotten accidentally via some other header. arch/um/include/um_uaccess.h loses asm/fixmap.h because it uses no fixmap stuff and gains elf.h, because it needs FIXADDR_USER_*, and archsetjmp.h, because it needs jmp_buf. pmd_alloc_one is uninlined because it needs mm_struct, and that's inconvenient to provide in asm-um/pgtable-3level.h. elf_core_copy_fpregs is also uninlined from elf-i386.h and elf-x86_64.h, which duplicated the code anyway, to arch/um/kernel/process.c, so that the reference to current_thread doesn't pull sched.h or anything related into asm/elf.h. arch/um/sys-i386/ldt.c, arch/um/kernel/tlb.c and arch/um/kernel/skas/uaccess.c got sched.h because they dereference task_structs. Its includes of linux and asm headers got turned from "" to <>. arch/um/sys-i386/bug.c gets asm/errno.h because it needs errno constants. asm/elf-i386 gets asm/user.h because it needs user_regs_struct. asm/fixmap.h gets page.h because it needs PAGE_SIZE and PAGE_MASK and system.h for BUG_ON. asm/pgtable doesn't need sched.h. asm/processor-generic.h defined mm_segment_t, but didn't use it. So, that definition is moved to uaccess.h, which defines a bunch of mm_segment_t-related stuff. thread_info.h uses mm_segment_t, and includes uaccess.h, which causes a recursion. So, the definition is placed above the include of thread_info. in uaccess.h. thread_info.h also gets page.h because it needs PAGE_SIZE. ObCheckpatchViolationJustification - I'm not adding a typedef; I'm moving mm_segment_t from one place to another. Signed-off-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/drivers/random.c | 1 + arch/um/include/um_uaccess.h | 4 +++- arch/um/kernel/mem.c | 21 ++++++++++++++++----- arch/um/kernel/process.c | 8 ++++++++ arch/um/kernel/skas/uaccess.c | 13 +++++++------ arch/um/kernel/tlb.c | 7 ++++--- arch/um/sys-i386/bug.c | 1 + arch/um/sys-i386/ldt.c | 5 +++-- include/asm-um/elf-i386.h | 9 ++------- include/asm-um/elf-x86_64.h | 8 +------- include/asm-um/fixmap.h | 3 ++- include/asm-um/pgtable-3level.h | 11 ++--------- include/asm-um/pgtable.h | 1 - include/asm-um/processor-generic.h | 5 +---- include/asm-um/thread_info.h | 3 ++- include/asm-um/uaccess.h | 10 +++++++++- 16 files changed, 62 insertions(+), 48 deletions(-) diff --git a/arch/um/drivers/random.c b/arch/um/drivers/random.c index e942e836f99..71f0959c153 100644 --- a/arch/um/drivers/random.c +++ b/arch/um/drivers/random.c @@ -5,6 +5,7 @@ * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. */ +#include #include #include #include diff --git a/arch/um/include/um_uaccess.h b/arch/um/include/um_uaccess.h index fdfc06b8560..2b6fc8e0f07 100644 --- a/arch/um/include/um_uaccess.h +++ b/arch/um/include/um_uaccess.h @@ -6,7 +6,9 @@ #ifndef __ARCH_UM_UACCESS_H #define __ARCH_UM_UACCESS_H -#include "asm/fixmap.h" +#include +#include +#include "sysdep/archsetjmp.h" #define __under_task_size(addr, size) \ (((unsigned long) (addr) < TASK_SIZE) && \ diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c index 96072e27a0e..1f8f0c19517 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -152,7 +152,7 @@ pgprot_t kmap_prot; #define kmap_get_fixmap_pte(vaddr) \ pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr), (vaddr)),\ - (vaddr)), (vaddr)) + (vaddr)), (vaddr)) static void __init kmap_init(void) { @@ -278,7 +278,8 @@ struct page *arch_validate(struct page *page, gfp_t mask, int order) goto again; } -/* This can't do anything because nothing in the kernel image can be freed +/* + * This can't do anything because nothing in the kernel image can be freed * since it's not in kernel physical memory. */ @@ -331,9 +332,7 @@ void show_mem(void) printk("%d pages swap cached\n", cached); } -/* - * Allocate and free page tables. - */ +/* Allocate and free page tables. */ pgd_t *pgd_alloc(struct mm_struct *mm) { @@ -368,3 +367,15 @@ struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address) pte = alloc_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO); return pte; } + +#ifdef CONFIG_3_LEVEL_PGTABLES +pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) +{ + pmd_t *pmd = (pmd_t *) __get_free_page(GFP_KERNEL); + + if (pmd) + memset(pmd, 0, PAGE_SIZE); + + return pmd; +} +#endif diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c index 541a2bf331c..57047121808 100644 --- a/arch/um/kernel/process.c +++ b/arch/um/kernel/process.c @@ -446,3 +446,11 @@ unsigned long get_wchan(struct task_struct *p) return 0; } + +int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu) +{ + int cpu = current_thread_info()->cpu; + + return save_fp_registers(userspace_pid[cpu], (unsigned long *) fpu); +} + diff --git a/arch/um/kernel/skas/uaccess.c b/arch/um/kernel/skas/uaccess.c index 302425b03d4..d145565b5f4 100644 --- a/arch/um/kernel/skas/uaccess.c +++ b/arch/um/kernel/skas/uaccess.c @@ -3,12 +3,13 @@ * Licensed under the GPL */ -#include "linux/err.h" -#include "linux/highmem.h" -#include "linux/mm.h" -#include "asm/current.h" -#include "asm/page.h" -#include "asm/pgtable.h" +#include +#include +#include +#include +#include +#include +#include #include "kern_util.h" #include "os.h" diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c index f4a0e407eee..96e097879f5 100644 --- a/arch/um/kernel/tlb.c +++ b/arch/um/kernel/tlb.c @@ -3,9 +3,10 @@ * Licensed under the GPL */ -#include "linux/mm.h" -#include "asm/pgtable.h" -#include "asm/tlbflush.h" +#include +#include +#include +#include #include "as-layout.h" #include "mem_user.h" #include "os.h" diff --git a/arch/um/sys-i386/bug.c b/arch/um/sys-i386/bug.c index a4360b5207d..8d4f273f121 100644 --- a/arch/um/sys-i386/bug.c +++ b/arch/um/sys-i386/bug.c @@ -4,6 +4,7 @@ */ #include +#include /* Mostly copied from i386/x86_86 - eliminated the eip < PAGE_OFFSET because * that's not relevant in skas mode. diff --git a/arch/um/sys-i386/ldt.c b/arch/um/sys-i386/ldt.c index 67c0958eb98..505ed5c9a68 100644 --- a/arch/um/sys-i386/ldt.c +++ b/arch/um/sys-i386/ldt.c @@ -3,8 +3,9 @@ * Licensed under the GPL */ -#include "linux/mm.h" -#include "asm/unistd.h" +#include +#include +#include #include "os.h" #include "proc_mm.h" #include "skas.h" diff --git a/include/asm-um/elf-i386.h b/include/asm-um/elf-i386.h index ca94a136dfe..22bbb755ee5 100644 --- a/include/asm-um/elf-i386.h +++ b/include/asm-um/elf-i386.h @@ -5,7 +5,7 @@ #ifndef __UM_ELF_I386_H #define __UM_ELF_I386_H -#include +#include #include "skas.h" #define R_386_NONE 0 @@ -76,12 +76,7 @@ typedef struct user_i387_struct elf_fpregset_t; pr_reg[16] = PT_REGS_SS(regs); \ } while(0); -static inline int elf_core_copy_fpregs(struct task_struct *t, - elf_fpregset_t *fpu) -{ - int cpu = ((struct thread_info *) t->stack)->cpu; - return save_fp_registers(userspace_pid[cpu], (unsigned long *) fpu); -} +extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu); #define ELF_CORE_COPY_FPREGS(t, fpu) elf_core_copy_fpregs(t, fpu) diff --git a/include/asm-um/elf-x86_64.h b/include/asm-um/elf-x86_64.h index 3c9d543eb61..3b2d5224a7e 100644 --- a/include/asm-um/elf-x86_64.h +++ b/include/asm-um/elf-x86_64.h @@ -7,7 +7,6 @@ #ifndef __UM_ELF_X86_64_H #define __UM_ELF_X86_64_H -#include #include #include "skas.h" @@ -96,12 +95,7 @@ typedef struct user_i387_struct elf_fpregset_t; (pr_reg)[25] = 0; \ (pr_reg)[26] = 0; -static inline int elf_core_copy_fpregs(struct task_struct *t, - elf_fpregset_t *fpu) -{ - int cpu = current_thread->cpu; - return save_fp_registers(userspace_pid[cpu], (unsigned long *) fpu); -} +extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu); #define ELF_CORE_COPY_FPREGS(t, fpu) elf_core_copy_fpregs(t, fpu) diff --git a/include/asm-um/fixmap.h b/include/asm-um/fixmap.h index d352a35cfaf..3d3e85d30ac 100644 --- a/include/asm-um/fixmap.h +++ b/include/asm-um/fixmap.h @@ -1,9 +1,10 @@ #ifndef __UM_FIXMAP_H #define __UM_FIXMAP_H +#include #include #include -#include +#include /* * Here we define all the compile-time 'special' virtual diff --git a/include/asm-um/pgtable-3level.h b/include/asm-um/pgtable-3level.h index 3ebafbaacb2..e0b6c16a3a4 100644 --- a/include/asm-um/pgtable-3level.h +++ b/include/asm-um/pgtable-3level.h @@ -59,15 +59,8 @@ static inline void pgd_mkuptodate(pgd_t pgd) { pgd_val(pgd) &= ~_PAGE_NEWPAGE; } #define set_pmd(pmdptr, pmdval) set_64bit((phys_t *) (pmdptr), pmd_val(pmdval)) -static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) -{ - pmd_t *pmd = (pmd_t *) __get_free_page(GFP_KERNEL); - - if(pmd) - memset(pmd, 0, PAGE_SIZE); - - return pmd; -} +struct mm_struct; +extern pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address); static inline void pud_clear (pud_t *pud) { diff --git a/include/asm-um/pgtable.h b/include/asm-um/pgtable.h index e268506f322..bec4840d30e 100644 --- a/include/asm-um/pgtable.h +++ b/include/asm-um/pgtable.h @@ -8,7 +8,6 @@ #ifndef __UM_PGTABLE_H #define __UM_PGTABLE_H -#include "linux/sched.h" #include #define _PAGE_PRESENT 0x001 diff --git a/include/asm-um/processor-generic.h b/include/asm-um/processor-generic.h index 057a76d4156..35ab6a292d6 100644 --- a/include/asm-um/processor-generic.h +++ b/include/asm-um/processor-generic.h @@ -11,6 +11,7 @@ struct pt_regs; struct task_struct; #include "asm/ptrace.h" +#include "asm/pgtable.h" #include "registers.h" #include "sysdep/archsetjmp.h" @@ -68,10 +69,6 @@ struct thread_struct { .request = { 0 } \ } -typedef struct { - unsigned long seg; -} mm_segment_t; - extern struct task_struct *alloc_task_struct(void); static inline void release_thread(struct task_struct *task) diff --git a/include/asm-um/thread_info.h b/include/asm-um/thread_info.h index 6e5fd5c892d..cdfc91cb77a 100644 --- a/include/asm-um/thread_info.h +++ b/include/asm-um/thread_info.h @@ -8,8 +8,9 @@ #ifndef __ASSEMBLY__ -#include #include +#include +#include struct thread_info { struct task_struct *task; /* main task structure */ diff --git a/include/asm-um/uaccess.h b/include/asm-um/uaccess.h index 077032d4fc4..b9a895d6fa1 100644 --- a/include/asm-um/uaccess.h +++ b/include/asm-um/uaccess.h @@ -6,7 +6,15 @@ #ifndef __UM_UACCESS_H #define __UM_UACCESS_H -#include "linux/sched.h" +#include +#include + +/* 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" #define VERIFY_READ 0 #define VERIFY_WRITE 1 -- cgit v1.2.3-18-g5258