Hello,
Since the functionality of the hugetlb syscalls is now available via
hugetlbfs with better control over permissions, could you apply the
following patch that gets rid of a lot of duplicate and unnescessary
code by removing the two hugetlb syscalls? This patch was only tested
on x86, so if people could take a look over it and see if I missed
anything I'd appreciate it. Thanks,
-ben
-- "Do you seek knowledge in time travel?"arch/i386/kernel/entry.S | 4 arch/i386/kernel/sys_i386.c | 67 ----------- arch/i386/mm/hugetlbpage.c | 218 --------------------------------------- arch/ia64/kernel/entry.S | 4 arch/ia64/kernel/sys_ia64.c | 75 ------------- arch/ia64/mm/hugetlbpage.c | 199 ----------------------------------- arch/sparc64/kernel/sys_sparc.c | 97 ----------------- arch/sparc64/kernel/systbls.S | 4 include/asm-alpha/unistd.h | 2 include/asm-i386/unistd.h | 2 include/asm-ia64/unistd.h | 2 include/asm-ppc/unistd.h | 2 include/asm-ppc64/unistd.h | 2 include/asm-sparc/unistd.h | 2 include/asm-sparc64/unistd.h | 2 include/asm-x86_64/ia32_unistd.h | 2 17 files changed, 6 insertions(+), 678 deletions(-)
:r v2.5.47-mm2-hugetlbcleanup.diff diff -urN v2.5.47-mm2/arch/i386/kernel/entry.S v2.5.47-mm2-hugetlbcleanup/arch/i386/kernel/entry.S --- v2.5.47-mm2/arch/i386/kernel/entry.S Wed Nov 13 18:12:15 2002 +++ v2.5.47-mm2-hugetlbcleanup/arch/i386/kernel/entry.S Wed Nov 13 18:17:05 2002 @@ -760,8 +760,8 @@ .long sys_io_getevents .long sys_io_submit .long sys_io_cancel - .long sys_alloc_hugepages /* 250 */ - .long sys_free_hugepages + .long sys_ni_syscall /* 250 */ + .long sys_ni_syscall .long sys_exit_group .long sys_lookup_dcookie .long sys_epoll_create diff -urN v2.5.47-mm2/arch/i386/kernel/sys_i386.c v2.5.47-mm2-hugetlbcleanup/arch/i386/kernel/sys_i386.c --- v2.5.47-mm2/arch/i386/kernel/sys_i386.c Wed Nov 13 18:09:55 2002 +++ v2.5.47-mm2-hugetlbcleanup/arch/i386/kernel/sys_i386.c Wed Nov 13 18:21:24 2002 @@ -9,7 +9,6 @@ #include <linux/errno.h> #include <linux/sched.h> #include <linux/mm.h> -#include <linux/hugetlb.h> #include <linux/smp.h> #include <linux/smp_lock.h> #include <linux/sem.h> @@ -248,69 +247,3 @@ return error; } -#ifdef CONFIG_HUGETLB_PAGE -/* get_addr function gets the currently unused virtaul range in - * current process's address space. It returns the HPAGE_SIZE - * aligned address (in cases of success). Other kernel generic - * routines only could gurantee that allocated address is PAGE_SIZE aligned. - */ -static unsigned long get_addr(unsigned long addr, unsigned long len) -{ - struct vm_area_struct *vma; - if (addr) { - addr = (addr + HPAGE_SIZE - 1) & HPAGE_MASK; - vma = find_vma(current->mm, addr); - if (TASK_SIZE > addr + len && !(vma && addr + len >= vma->vm_start)) - goto found_addr; - } - addr = TASK_UNMAPPED_BASE; - for (vma = find_vma(current->mm, addr); TASK_SIZE > addr + len; vma = vma->vm_next) { - if (!vma || addr + len < vma->vm_start) - goto found_addr; - addr = (vma->vm_end + HPAGE_SIZE - 1) & HPAGE_MASK; - } - return -ENOMEM; -found_addr: - return addr; -} - -asmlinkage unsigned long sys_alloc_hugepages(int key, unsigned long addr, unsigned long len, int prot, int flag) -{ - struct mm_struct *mm = current->mm; - unsigned long raddr; - int retval = 0; - extern int alloc_hugetlb_pages(int, unsigned long, unsigned long, int, int); - if (!cpu_has_pse || key < 0 || len & ~HPAGE_MASK) - return -EINVAL; - down_write(&mm->mmap_sem); - raddr = get_addr(addr, len); - if (raddr != -ENOMEM) - retval = alloc_hugetlb_pages(key, raddr, len, prot, flag); - up_write(&mm->mmap_sem); - return (retval < 0) ? (unsigned long)retval : raddr; -} - -asmlinkage int sys_free_hugepages(unsigned long addr) -{ - struct mm_struct *mm = current->mm; - struct vm_area_struct *vma; - int retval; - - vma = find_vma(current->mm, addr); - if (!vma || !(vma->vm_flags & VM_HUGETLB) || vma->vm_start != addr) - return -EINVAL; - down_write(&mm->mmap_sem); - retval = do_munmap(vma->vm_mm, addr, vma->vm_end - addr); - up_write(&mm->mmap_sem); - return retval; -} -#else -asmlinkage unsigned long sys_alloc_hugepages(int key, unsigned long addr, size_t len, int prot, int flag) -{ - return -ENOSYS; -} -asmlinkage int sys_free_hugepages(unsigned long addr) -{ - return -ENOSYS; -} -#endif diff -urN v2.5.47-mm2/arch/i386/mm/hugetlbpage.c v2.5.47-mm2-hugetlbcleanup/arch/i386/mm/hugetlbpage.c --- v2.5.47-mm2/arch/i386/mm/hugetlbpage.c Wed Nov 13 18:10:01 2002 +++ v2.5.47-mm2-hugetlbcleanup/arch/i386/mm/hugetlbpage.c Wed Nov 13 18:33:51 2002 @@ -32,17 +32,6 @@ int key; } htlbpagek[MAX_ID]; -static struct inode *find_key_inode(int key) -{ - int i; - - for (i = 0; i < MAX_ID; i++) { - if (htlbpagek[i].key == key) - return (htlbpagek[i].in); - } - return NULL; -} - static struct page *alloc_hugetlb_page(void) { int i; @@ -101,57 +90,6 @@ set_pte(page_table, entry); } -static int anon_get_hugetlb_page(struct mm_struct *mm, struct vm_area_struct *vma, int write_access, pte_t *page_table) -{ - struct page *page = alloc_hugetlb_page(); - if (page) - set_huge_pte(mm, vma, page, page_table, write_access); - return page ? 1 : -1; -} - -static int make_hugetlb_pages_present(unsigned long addr, unsigned long end, int flags) -{ - int write; - struct mm_struct *mm = current->mm; - struct vm_area_struct *vma; - pte_t *pte; - - vma = find_vma(mm, addr); - if (!vma) - goto out_error1; - - write = (vma->vm_flags & VM_WRITE) != 0; - if ((vma->vm_end - vma->vm_start) & (HPAGE_SIZE - 1)) - goto out_error1; - spin_lock(&mm->page_table_lock); - do { - pte = huge_pte_alloc(mm, addr); - if ((pte) && (pte_none(*pte))) { - if (anon_get_hugetlb_page(mm, vma, - write ? VM_WRITE : VM_READ, - pte) == -1) - goto out_error; - } else - goto out_error; - addr += HPAGE_SIZE; - } while (addr < end); - spin_unlock(&mm->page_table_lock); - vma->vm_flags |= (VM_HUGETLB | VM_RESERVED); - if (flags & MAP_PRIVATE) - vma->vm_flags |= VM_DONTCOPY; - vma->vm_ops = &hugetlb_vm_ops; - return 0; -out_error: /* Error case, remove the partial lp_resources. */ - if (addr > vma->vm_start) { - vma->vm_end = addr; - zap_hugepage_range(vma, vma->vm_start, vma->vm_end - vma->vm_start); - vma->vm_end = end; - } - spin_unlock(&mm->page_table_lock); - out_error1: - return -1; -} - int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src, struct vm_area_struct *vma) @@ -297,138 +235,6 @@ spin_unlock(&mm->page_table_lock); } -static struct inode *set_new_inode(unsigned long len, int prot, int flag, int key) -{ - struct inode *inode; - int i; - - for (i = 0; i < MAX_ID; i++) { - if (htlbpagek[i].key == 0) - break; - } - if (i == MAX_ID) - return NULL; - inode = kmalloc(sizeof (struct inode), GFP_ATOMIC); - if (inode == NULL) - return NULL; - - inode_init_once(inode); - atomic_inc(&inode->i_writecount); - inode->i_mapping = &inode->i_data; - inode->i_mapping->host = inode; - inode->i_ino = (unsigned long)key; - - htlbpagek[i].key = key; - htlbpagek[i].in = inode; - inode->i_uid = current->fsuid; - inode->i_gid = current->fsgid; - inode->i_mode = prot; - inode->i_size = len; - return inode; -} - -static int check_size_prot(struct inode *inode, unsigned long len, int prot, int flag) -{ - if (inode->i_uid != current->fsuid) - return -1; - if (inode->i_gid != current->fsgid) - return -1; - if (inode->i_size != len) - return -1; - return 0; -} - -static int alloc_shared_hugetlb_pages(int key, unsigned long addr, unsigned long len, int prot, int flag) -{ - struct mm_struct *mm = current->mm; - struct vm_area_struct *vma; - struct inode *inode; - struct address_space *mapping; - int idx; - int retval = -ENOMEM; - int newalloc = 0; - -try_again: - spin_lock(&htlbpage_lock); - - inode = find_key_inode(key); - if (inode == NULL) { - if (!capable(CAP_SYS_ADMIN)) { - if (!in_group_p(0)) { - retval = -EPERM; - goto out_err; - } - } - if (!(flag & IPC_CREAT)) { - retval = -ENOENT; - goto out_err; - } - inode = set_new_inode(len, prot, flag, key); - if (inode == NULL) - goto out_err; - newalloc = 1; - } else { - if (check_size_prot(inode, len, prot, flag) < 0) { - retval = -EINVAL; - goto out_err; - } - else if (atomic_read(&inode->i_writecount)) { - spin_unlock(&htlbpage_lock); - goto try_again; - } - } - spin_unlock(&htlbpage_lock); - mapping = inode->i_mapping; - - addr = do_mmap_pgoff(NULL, addr, len, (unsigned long) prot, - MAP_NORESERVE|MAP_FIXED|MAP_PRIVATE|MAP_ANONYMOUS, 0); - if (IS_ERR((void *) addr)) - goto freeinode; - - vma = find_vma(mm, addr); - if (!vma) { - retval = -EINVAL; - goto freeinode; - } - - retval = hugetlb_prefault(mapping, vma); - if (retval) - goto out; - - vma->vm_flags |= (VM_HUGETLB | VM_RESERVED); - vma->vm_ops = &hugetlb_vm_ops; - spin_unlock(&mm->page_table_lock); - spin_lock(&htlbpage_lock); - atomic_set(&inode->i_writecount, 0); - spin_unlock(&htlbpage_lock); - return retval; -out: - if (addr > vma->vm_start) { - unsigned long raddr; - raddr = vma->vm_end; - vma->vm_end = addr; - zap_hugepage_range(vma, vma->vm_start, vma->vm_end - vma->vm_start); - vma->vm_end = raddr; - } - spin_unlock(&mm->page_table_lock); - do_munmap(mm, vma->vm_start, len); - if (newalloc) - goto freeinode; - return retval; -out_err: spin_unlock(&htlbpage_lock); -freeinode: - if (newalloc) { - for(idx=0;idx<MAX_ID;idx++) - if (htlbpagek[idx].key == inode->i_ino) { - htlbpagek[idx].key = 0; - htlbpagek[idx].in = NULL; - break; - } - kfree(inode); - } - return retval; -} - int hugetlb_prefault(struct address_space *mapping, struct vm_area_struct *vma) { struct mm_struct *mm = current->mm; @@ -470,30 +276,6 @@ return ret; } -static int alloc_private_hugetlb_pages(int key, unsigned long addr, unsigned long len, int prot, int flag) -{ - if (!capable(CAP_SYS_ADMIN)) { - if (!in_group_p(0)) - return -EPERM; - } - addr = do_mmap_pgoff(NULL, addr, len, prot, - MAP_NORESERVE|MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, 0); - if (IS_ERR((void *) addr)) - return -ENOMEM; - if (make_hugetlb_pages_present(addr, (addr + len), flag) < 0) { - do_munmap(current->mm, addr, len); - return -ENOMEM; - } - return 0; -} - -int alloc_hugetlb_pages(int key, unsigned long addr, unsigned long len, int prot, int flag) -{ - if (key > 0) - return alloc_shared_hugetlb_pages(key, addr, len, prot, flag); - return alloc_private_hugetlb_pages(key, addr, len, prot, flag); -} - int set_hugetlb_mem_size(int count) { int j, lcount; diff -urN v2.5.47-mm2/arch/ia64/kernel/entry.S v2.5.47-mm2-hugetlbcleanup/arch/ia64/kernel/entry.S --- v2.5.47-mm2/arch/ia64/kernel/entry.S Wed Nov 13 18:09:55 2002 +++ v2.5.47-mm2-hugetlbcleanup/arch/ia64/kernel/entry.S Wed Nov 13 18:27:58 2002 @@ -1242,8 +1242,8 @@ data8 sys_sched_setaffinity data8 sys_sched_getaffinity data8 sys_security - data8 sys_alloc_hugepages - data8 sys_free_hugepages // 1235 + data8 ia64_ni_syscall + data8 ia64_ni_syscall // 1235 data8 sys_exit_group data8 sys_lookup_dcookie data8 sys_io_setup diff -urN v2.5.47-mm2/arch/ia64/kernel/sys_ia64.c v2.5.47-mm2-hugetlbcleanup/arch/ia64/kernel/sys_ia64.c --- v2.5.47-mm2/arch/ia64/kernel/sys_ia64.c Wed Nov 13 18:09:55 2002 +++ v2.5.47-mm2-hugetlbcleanup/arch/ia64/kernel/sys_ia64.c Wed Nov 13 18:20:33 2002 @@ -9,7 +9,6 @@ #include <linux/errno.h> #include <linux/fs.h> #include <linux/mm.h> -#include <linux/hugetlb.h> #include <linux/mman.h> #include <linux/sched.h> #include <linux/file.h> /* doh, must come after sched.h... */ @@ -243,80 +242,6 @@ return addr; } -#ifdef CONFIG_HUGETLB_PAGE - -asmlinkage unsigned long -sys_alloc_hugepages (int key, unsigned long addr, size_t len, int prot, int flag) -{ - struct mm_struct *mm = current->mm; - long retval; - extern int alloc_hugetlb_pages (int, unsigned long, unsigned long, int, int); - - if ((key < 0) || (len & (HPAGE_SIZE - 1))) - return -EINVAL; - - if (addr && ((REGION_NUMBER(addr) != REGION_HPAGE) || (addr & (HPAGE_SIZE - 1)))) - addr = TASK_HPAGE_BASE; - - if (!addr) - addr = TASK_HPAGE_BASE; - down_write(&mm->mmap_sem); - { - retval = arch_get_unmapped_area(NULL, COLOR_HALIGN(addr), len, 0, 0); - if (retval != -ENOMEM) - retval = alloc_hugetlb_pages(key, retval, len, prot, flag); - } - up_write(&mm->mmap_sem); - - if (IS_ERR((void *) retval)) - return retval; - - force_successful_syscall_return(); - return retval; -} - -asmlinkage int -sys_free_hugepages (unsigned long addr) -{ - struct mm_struct *mm = current->mm; - struct vm_area_struct *vma; - extern int free_hugepages(struct vm_area_struct *); - int retval; - - down_write(&mm->mmap_sem); - { - vma = find_vma(mm, addr); - if (!vma || !is_vm_hugetlb_page(vma) || (vma->vm_start != addr)) - retval = -EINVAL; - goto out; - - spin_lock(&mm->page_table_lock); - { - retval = free_hugepages(vma); - } - spin_unlock(&mm->page_table_lock); - } -out: - up_write(&mm->mmap_sem); - return retval; -} - -#else /* !CONFIG_HUGETLB_PAGE */ - -asmlinkage unsigned long -sys_alloc_hugepages (int key, size_t addr, unsigned long len, int prot, int flag) -{ - return -ENOSYS; -} - -asmlinkage unsigned long -sys_free_hugepages (unsigned long addr) -{ - return -ENOSYS; -} - -#endif /* !CONFIG_HUGETLB_PAGE */ - asmlinkage long sys_vm86 (long arg0, long arg1, long arg2, long arg3) { diff -urN v2.5.47-mm2/arch/ia64/mm/hugetlbpage.c v2.5.47-mm2-hugetlbcleanup/arch/ia64/mm/hugetlbpage.c --- v2.5.47-mm2/arch/ia64/mm/hugetlbpage.c Wed Nov 13 18:09:55 2002 +++ v2.5.47-mm2-hugetlbcleanup/arch/ia64/mm/hugetlbpage.c Wed Nov 13 18:40:11 2002 @@ -31,18 +31,6 @@ int key; } htlbpagek[MAX_ID]; -static struct inode * -find_key_inode(int key) -{ - int i; - - for (i = 0; i < MAX_ID; i++) { - if (htlbpagek[i].key == key) - return (htlbpagek[i].in); - } - return NULL; -} - static struct page * alloc_hugetlb_page (void) { @@ -305,193 +293,6 @@ } int -free_hugepages (struct vm_area_struct *mpnt) -{ - unlink_vma(mpnt); - zap_hugetlb_resources(mpnt); - kmem_cache_free(vm_area_cachep, mpnt); - return 1; -} - -static struct inode * -set_new_inode (unsigned long len, int prot, int flag, int key) -{ - struct inode *inode; - int i; - - for (i = 0; i < MAX_ID; i++) { - if (htlbpagek[i].key == 0) - break; - } - if (i == MAX_ID) - return NULL; - inode = kmalloc(sizeof (struct inode), GFP_ATOMIC); - if (inode == NULL) - return NULL; - - inode_init_once(inode); - atomic_inc(&inode->i_writecount); - inode->i_mapping = &inode->i_data; - inode->i_mapping->host = inode; - inode->i_ino = (unsigned long) key; - - htlbpagek[i].key = key; - htlbpagek[i].in = inode; - inode->i_uid = current->fsuid; - inode->i_gid = current->fsgid; - inode->i_mode = prot; - inode->i_size = len; - return inode; -} - -static int -check_size_prot (struct inode *inode, unsigned long len, int prot, int flag) -{ - if (inode->i_uid != current->fsuid) - return -1; - if (inode->i_gid != current->fsgid) - return -1; - if (inode->i_size != len) - return -1; - return 0; -} - -int -alloc_shared_hugetlb_pages (int key, unsigned long addr, unsigned long len, int prot, int flag) -{ - struct mm_struct *mm = current->mm; - struct vm_area_struct *vma; - struct inode *inode; - struct address_space *mapping; - struct page *page; - int idx; - int retval = -ENOMEM; - int newalloc = 0; - -try_again: - spin_lock(&htlbpage_lock); - inode = find_key_inode(key); - if (inode == NULL) { - if (!capable(CAP_SYS_ADMIN)) { - if (!in_group_p(0)) { - retval = -EPERM; - goto out_err; - } - } - if (!(flag & IPC_CREAT)) { - retval = -ENOENT; - goto out_err; - } - inode = set_new_inode(len, prot, flag, key); - if (inode == NULL) - goto out_err; - newalloc = 1; - } else { - if (check_size_prot(inode, len, prot, flag) < 0) { - retval = -EINVAL; - goto out_err; - } - else if (atomic_read(&inode->i_writecount)) { - spin_unlock(&htlbpage_lock); - goto try_again; - } - } - spin_unlock(&htlbpage_lock); - mapping = inode->i_mapping; - - addr = do_mmap_pgoff(NULL, addr, len, (unsigned long) prot, - MAP_NORESERVE|MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, 0); - if (IS_ERR((void *) addr)) - goto freeinode; - - vma = find_vma(mm, addr); - if (!vma) { - retval = -EINVAL; - goto freeinode; - } - - spin_lock(&mm->page_table_lock); - do { - pte_t *pte = huge_pte_alloc(mm, addr); - if ((pte) && (pte_none(*pte))) { - idx = (addr - vma->vm_start) >> HPAGE_SHIFT; - page = find_get_page(mapping, idx); - if (page == NULL) { - page = alloc_hugetlb_page(); - if (page == NULL) - goto out; - add_to_page_cache(page, mapping, idx); - } - set_huge_pte(mm, vma, page, pte, - (vma->vm_flags & VM_WRITE)); - } else - goto out; - addr += HPAGE_SIZE; - } while (addr < vma->vm_end); - retval = 0; - vma->vm_flags |= (VM_HUGETLB | VM_RESERVED); - vma->vm_ops = &hugetlb_vm_ops; - spin_unlock(&mm->page_table_lock); - spin_lock(&htlbpage_lock); - atomic_set(&inode->i_writecount, 0); - spin_unlock(&htlbpage_lock); - return retval; -out: - if (addr > vma->vm_start) { - unsigned long raddr = vma->vm_end; - vma->vm_end = addr; - zap_hugetlb_resources(vma); - vma->vm_end = raddr; - } - spin_unlock(&mm->page_table_lock); - do_munmap(mm, vma->vm_start, len); - if (newalloc) - goto freeinode; - return retval; - -out_err: - spin_unlock(&htlbpage_lock); -freeinode: - if (newalloc) { - for (idx = 0; idx < MAX_ID; idx++) - if (htlbpagek[idx].key == inode->i_ino) { - htlbpagek[idx].key = 0; - htlbpagek[idx].in = NULL; - break; - } - kfree(inode); - } - return retval; -} - -static int -alloc_private_hugetlb_pages (int key, unsigned long addr, unsigned long len, int prot, int flag) -{ - if (!capable(CAP_SYS_ADMIN)) { - if (!in_group_p(0)) - return -EPERM; - } - addr = do_mmap_pgoff(NULL, addr, len, prot, - MAP_NORESERVE | MAP_PRIVATE | MAP_FIXED | MAP_ANONYMOUS, 0); - if (IS_ERR((void *) addr)) - return -ENOMEM; - if (make_hugetlb_pages_present(addr, (addr + len), flag) < 0) { - do_munmap(current->mm, addr, len); - return -ENOMEM; - } - return 0; -} - -int -alloc_hugetlb_pages (int key, unsigned long addr, unsigned long len, int prot, int flag) -{ - if (key > 0) - return alloc_shared_hugetlb_pages(key, addr, len, prot, flag); - else - return alloc_private_hugetlb_pages(key, addr, len, prot, flag); -} - -int set_hugetlb_mem_size (int count) { int j, lcount; diff -urN v2.5.47-mm2/arch/sparc64/kernel/sys_sparc.c v2.5.47-mm2-hugetlbcleanup/arch/sparc64/kernel/sys_sparc.c --- v2.5.47-mm2/arch/sparc64/kernel/sys_sparc.c Wed Nov 13 18:09:56 2002 +++ v2.5.47-mm2-hugetlbcleanup/arch/sparc64/kernel/sys_sparc.c Wed Nov 13 18:21:12 2002 @@ -13,7 +13,6 @@ #include <linux/fs.h> #include <linux/file.h> #include <linux/mm.h> -#include <linux/hugetlb.h> #include <linux/sem.h> #include <linux/msg.h> #include <linux/shm.h> @@ -683,99 +682,3 @@ return err; } -#ifdef CONFIG_HUGETLB_PAGE -#define HPAGE_ALIGN(x) (((unsigned long)x + (HPAGE_SIZE -1)) & HPAGE_MASK) -extern long sys_munmap(unsigned long, size_t); - -/* get_addr function gets the currently unused virtual range in - * the current process's address space. It returns the LARGE_PAGE_SIZE - * aligned address (in cases of success). Other kernel generic - * routines only could gurantee that allocated address is PAGE_SIZE aligned. - */ -static long get_addr(unsigned long addr, unsigned long len) -{ - struct vm_area_struct *vma; - if (addr) { - addr = HPAGE_ALIGN(addr); - vma = find_vma(current->mm, addr); - if (((TASK_SIZE - len) >= addr) && - (!vma || addr + len <= vma->vm_start)) - goto found_addr; - } - addr = HPAGE_ALIGN(TASK_UNMAPPED_BASE); - for (vma = find_vma(current->mm, addr); ; vma = vma->vm_next) { - if (TASK_SIZE - len < addr) - return -ENOMEM; - if (!vma || ((addr + len) < vma->vm_start)) - goto found_addr; - addr = vma->vm_end; - } -found_addr: - addr = HPAGE_ALIGN(addr); - return addr; -} - -extern int alloc_hugetlb_pages(int, unsigned long, unsigned long, int, int); - -asmlinkage long -sys_alloc_hugepages(int key, unsigned long addr, unsigned long len, int prot, int flag) -{ - struct mm_struct *mm = current->mm; - unsigned long raddr; - int retval; - - if (key < 0) - return -EINVAL; - if (len & (HPAGE_SIZE - 1)) - return -EINVAL; - down_write(&mm->mmap_sem); - raddr = get_addr(addr, len); - retval = 0; - if (raddr == -ENOMEM) { - retval = -ENOMEM; - goto raddr_out; - } - retval = alloc_hugetlb_pages(key, raddr, len, prot, flag); - -raddr_out: - up_write(&mm->mmap_sem); - if (retval < 0) - return (long) retval; - - return raddr; -} - -extern int free_hugepages(struct vm_area_struct *); - -asmlinkage int -sys_free_hugepages(unsigned long addr) -{ - struct mm_struct *mm = current->mm; - struct vm_area_struct *vma; - int retval; - - vma = find_vma(current->mm, addr); - if ((!vma) || (!is_vm_hugetlb_page(vma)) || (vma->vm_start!=addr)) - return -EINVAL; - down_write(&mm->mmap_sem); - spin_lock(&mm->page_table_lock); - retval = free_hugepages(vma); - spin_unlock(&mm->page_table_lock); - up_write(&mm->mmap_sem); - return retval; -} - -#else - -asmlinkage long -sys_alloc_hugepages(int key, unsigned long addr, size_t len, int prot, int flag) -{ - return -ENOSYS; -} -asmlinkage int -sys_free_hugepages(unsigned long addr) -{ - return -ENOSYS; -} - -#endif diff -urN v2.5.47-mm2/arch/sparc64/kernel/systbls.S v2.5.47-mm2-hugetlbcleanup/arch/sparc64/kernel/systbls.S --- v2.5.47-mm2/arch/sparc64/kernel/systbls.S Wed Nov 13 18:12:16 2002 +++ v2.5.47-mm2-hugetlbcleanup/arch/sparc64/kernel/systbls.S Wed Nov 13 18:27:21 2002 @@ -65,8 +65,8 @@ .word sys32_ipc, sys32_sigreturn, sys_clone, sys_nis_syscall, sys32_adjtimex /*220*/ .word sys32_sigprocmask, sys_ni_syscall, sys32_delete_module, sys_ni_syscall, sys_getpgid .word sys32_bdflush, sys32_sysfs, sys_nis_syscall, sys32_setfsuid16, sys32_setfsgid16 -/*230*/ .word sys32_select, sys_time, sys_nis_syscall, sys_stime, sys_alloc_hugepages - .word sys_free_hugepages, sys_llseek, sys_mlock, sys_munlock, sys_mlockall +/*230*/ .word sys32_select, sys_time, sys_nis_syscall, sys_stime, sys_ni_syscall + .word sys_ni_syscall, sys_llseek, sys_mlock, sys_munlock, sys_mlockall /*240*/ .word sys_munlockall, sys_sched_setparam, sys_sched_getparam, sys_sched_setscheduler, sys_sched_getscheduler .word sys_sched_yield, sys_sched_get_priority_max, sys_sched_get_priority_min, sys32_sched_rr_get_interval, sys32_nanosleep /*250*/ .word sys32_mremap, sys32_sysctl, sys_getsid, sys_fdatasync, sys32_nfsservctl diff -urN v2.5.47-mm2/include/asm-alpha/unistd.h v2.5.47-mm2-hugetlbcleanup/include/asm-alpha/unistd.h --- v2.5.47-mm2/include/asm-alpha/unistd.h Wed Nov 13 18:09:58 2002 +++ v2.5.47-mm2-hugetlbcleanup/include/asm-alpha/unistd.h Wed Nov 13 18:23:03 2002 @@ -340,8 +340,6 @@ #define __NR_io_getevents 400 #define __NR_io_submit 401 #define __NR_io_cancel 402 -#define __NR_alloc_hugepages 403 -#define __NR_free_hugepages 404 #define __NR_exit_group 405 #define NR_SYSCALLS 406 diff -urN v2.5.47-mm2/include/asm-i386/unistd.h v2.5.47-mm2-hugetlbcleanup/include/asm-i386/unistd.h --- v2.5.47-mm2/include/asm-i386/unistd.h Wed Nov 13 18:09:58 2002 +++ v2.5.47-mm2-hugetlbcleanup/include/asm-i386/unistd.h Wed Nov 13 18:22:04 2002 @@ -254,8 +254,6 @@ #define __NR_io_getevents 247 #define __NR_io_submit 248 #define __NR_io_cancel 249 -#define __NR_alloc_hugepages 250 -#define __NR_free_hugepages 251 #define __NR_exit_group 252 #define __NR_lookup_dcookie 253 #define __NR_sys_epoll_create 254 diff -urN v2.5.47-mm2/include/asm-ia64/unistd.h v2.5.47-mm2-hugetlbcleanup/include/asm-ia64/unistd.h --- v2.5.47-mm2/include/asm-ia64/unistd.h Wed Nov 13 18:09:58 2002 +++ v2.5.47-mm2-hugetlbcleanup/include/asm-ia64/unistd.h Wed Nov 13 18:24:20 2002 @@ -223,8 +223,6 @@ #define __NR_sched_setaffinity 1231 #define __NR_sched_getaffinity 1232 #define __NR_security 1233 -#define __NR_alloc_hugepages 1234 -#define __NR_free_hugepages 1235 #define __NR_exit_group 1236 #define __NR_lookup_dcookie 1237 #define __NR_io_setup 1238 diff -urN v2.5.47-mm2/include/asm-ppc/unistd.h v2.5.47-mm2-hugetlbcleanup/include/asm-ppc/unistd.h --- v2.5.47-mm2/include/asm-ppc/unistd.h Wed Nov 13 18:10:05 2002 +++ v2.5.47-mm2-hugetlbcleanup/include/asm-ppc/unistd.h Wed Nov 13 18:24:03 2002 @@ -236,8 +236,6 @@ #define __NR_io_getevents 229 #define __NR_io_submit 230 #define __NR_io_cancel 231 -#define __NR_alloc_hugepages 232 -#define __NR_free_hugepages 233 #define __NR_exit_group 234 #define __NR_lookup_dcookie 235 #define __NR_sys_epoll_create 236 diff -urN v2.5.47-mm2/include/asm-ppc64/unistd.h v2.5.47-mm2-hugetlbcleanup/include/asm-ppc64/unistd.h --- v2.5.47-mm2/include/asm-ppc64/unistd.h Wed Nov 13 18:24:46 2002 +++ v2.5.47-mm2-hugetlbcleanup/include/asm-ppc64/unistd.h Wed Nov 13 18:25:17 2002 @@ -241,8 +241,6 @@ #define __NR_io_getevents 229 #define __NR_io_submit 230 #define __NR_io_cancel 231 -#define __NR_alloc_hugepages 232 -#define __NR_free_hugepages 233 #define __NR_exit_group 234 #define __NR(n) #n diff -urN v2.5.47-mm2/include/asm-sparc/unistd.h v2.5.47-mm2-hugetlbcleanup/include/asm-sparc/unistd.h --- v2.5.47-mm2/include/asm-sparc/unistd.h Wed Nov 13 18:10:05 2002 +++ v2.5.47-mm2-hugetlbcleanup/include/asm-sparc/unistd.h Wed Nov 13 18:23:27 2002 @@ -249,8 +249,6 @@ #define __NR_time 231 /* Linux Specific */ /* #define __NR_oldstat 232 Linux Specific */ #define __NR_stime 233 /* Linux Specific */ -#define __NR_alloc_hugepages 234 /* Linux Specific */ -#define __NR_free_hugepages 235 /* Linux Specific */ #define __NR__llseek 236 /* Linux Specific */ #define __NR_mlock 237 #define __NR_munlock 238 diff -urN v2.5.47-mm2/include/asm-sparc64/unistd.h v2.5.47-mm2-hugetlbcleanup/include/asm-sparc64/unistd.h --- v2.5.47-mm2/include/asm-sparc64/unistd.h Wed Nov 13 18:10:05 2002 +++ v2.5.47-mm2-hugetlbcleanup/include/asm-sparc64/unistd.h Wed Nov 13 18:23:42 2002 @@ -251,8 +251,6 @@ #endif /* #define __NR_oldstat 232 Linux Specific */ #define __NR_stime 233 /* Linux Specific */ -#define __NR_alloc_hugepages 234 /* Linux Specific */ -#define __NR_free_hugepages 235 /* Linux Specific */ #define __NR__llseek 236 /* Linux Specific */ #define __NR_mlock 237 #define __NR_munlock 238 diff -urN v2.5.47-mm2/include/asm-x86_64/ia32_unistd.h v2.5.47-mm2-hugetlbcleanup/include/asm-x86_64/ia32_unistd.h --- v2.5.47-mm2/include/asm-x86_64/ia32_unistd.h Mon Nov 4 16:15:14 2002 +++ v2.5.47-mm2-hugetlbcleanup/include/asm-x86_64/ia32_unistd.h Wed Nov 13 18:26:03 2002 @@ -256,8 +256,6 @@ #define __NR_ia32_io_getevents 247 #define __NR_ia32_io_submit 248 #define __NR_ia32_io_cancel 249 -#define __NR_ia32_alloc_hugepages 250 -#define __NR_ia32_free_hugepages 251 #define __NR_ia32_exit_group 252 #define IA32_NR_syscalls 260 /* must be > than biggest syscall! */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Fri Nov 15 2002 - 22:00:31 EST