diff options
Diffstat (limited to 'arch/parisc')
| -rw-r--r-- | arch/parisc/Kconfig | 8 | ||||
| -rw-r--r-- | arch/parisc/include/asm/Kbuild | 1 | ||||
| -rw-r--r-- | arch/parisc/include/asm/cacheflush.h | 2 | ||||
| -rw-r--r-- | arch/parisc/include/asm/elf.h | 4 | ||||
| -rw-r--r-- | arch/parisc/include/asm/page.h | 3 | ||||
| -rw-r--r-- | arch/parisc/include/asm/pgtable.h | 1 | ||||
| -rw-r--r-- | arch/parisc/include/asm/processor.h | 2 | ||||
| -rw-r--r-- | arch/parisc/include/asm/thread_info.h | 10 | ||||
| -rw-r--r-- | arch/parisc/include/uapi/asm/errno.h | 2 | ||||
| -rw-r--r-- | arch/parisc/include/uapi/asm/socket.h | 2 | ||||
| -rw-r--r-- | arch/parisc/include/uapi/asm/stat.h | 40 | ||||
| -rw-r--r-- | arch/parisc/include/uapi/asm/unistd.h | 4 | ||||
| -rw-r--r-- | arch/parisc/kernel/cache.c | 14 | ||||
| -rw-r--r-- | arch/parisc/kernel/drivers.c | 22 | ||||
| -rw-r--r-- | arch/parisc/kernel/process.c | 21 | ||||
| -rw-r--r-- | arch/parisc/kernel/sys_parisc.c | 238 | ||||
| -rw-r--r-- | arch/parisc/kernel/syscall_table.S | 2 | ||||
| -rw-r--r-- | arch/parisc/mm/init.c | 59 |
18 files changed, 303 insertions, 132 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index b5f1858baf33..bb2a8ec440e7 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -229,13 +229,13 @@ config SMP bool "Symmetric multi-processing support" ---help--- This enables support for systems with more than one CPU. If you have - a system with only one CPU, like most personal computers, say N. If - you have a system with more than one CPU, say Y. + a system with only one CPU, say N. If you have a system with more + than one CPU, say Y. - If you say N here, the kernel will run on single and multiprocessor + If you say N here, the kernel will run on uni- and multiprocessor machines, but will use only one CPU of a multiprocessor machine. If you say Y here, the kernel will run on many, but not all, - singleprocessor machines. On a singleprocessor machine, the kernel + uniprocessor machines. On a uniprocessor machine, the kernel will run faster if you say N here. See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO diff --git a/arch/parisc/include/asm/Kbuild b/arch/parisc/include/asm/Kbuild index 34b0be4ca52d..752c981bc3c7 100644 --- a/arch/parisc/include/asm/Kbuild +++ b/arch/parisc/include/asm/Kbuild @@ -6,3 +6,4 @@ generic-y += word-at-a-time.h auxvec.h user.h cputime.h emergency-restart.h \ poll.h xor.h clkdev.h exec.h generic-y += trace_clock.h generic-y += preempt.h +generic-y += hash.h diff --git a/arch/parisc/include/asm/cacheflush.h b/arch/parisc/include/asm/cacheflush.h index 2f9b751878ba..de65f66ea64e 100644 --- a/arch/parisc/include/asm/cacheflush.h +++ b/arch/parisc/include/asm/cacheflush.h @@ -132,7 +132,6 @@ void mark_rodata_ro(void); static inline void *kmap(struct page *page) { might_sleep(); - flush_dcache_page(page); return page_address(page); } @@ -144,7 +143,6 @@ static inline void kunmap(struct page *page) static inline void *kmap_atomic(struct page *page) { pagefault_disable(); - flush_dcache_page(page); return page_address(page); } diff --git a/arch/parisc/include/asm/elf.h b/arch/parisc/include/asm/elf.h index ad2b50397894..3391d061eccc 100644 --- a/arch/parisc/include/asm/elf.h +++ b/arch/parisc/include/asm/elf.h @@ -348,4 +348,8 @@ struct pt_regs; /* forward declaration... */ #define ELF_HWCAP 0 +struct mm_struct; +extern unsigned long arch_randomize_brk(struct mm_struct *); +#define arch_randomize_brk arch_randomize_brk + #endif diff --git a/arch/parisc/include/asm/page.h b/arch/parisc/include/asm/page.h index c53fc63149e8..637fe031aa84 100644 --- a/arch/parisc/include/asm/page.h +++ b/arch/parisc/include/asm/page.h @@ -29,7 +29,8 @@ struct page; void clear_page_asm(void *page); void copy_page_asm(void *to, void *from); #define clear_user_page(vto, vaddr, page) clear_page_asm(vto) -#define copy_user_page(vto, vfrom, vaddr, page) copy_page_asm(vto, vfrom) +void copy_user_page(void *vto, void *vfrom, unsigned long vaddr, + struct page *pg); /* #define CONFIG_PARISC_TMPALIAS */ diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h index 34899b5d959a..22b89d1edba7 100644 --- a/arch/parisc/include/asm/pgtable.h +++ b/arch/parisc/include/asm/pgtable.h @@ -511,6 +511,7 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, /* We provide our own get_unmapped_area to provide cache coherency */ #define HAVE_ARCH_UNMAPPED_AREA +#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG #define __HAVE_ARCH_PTEP_GET_AND_CLEAR diff --git a/arch/parisc/include/asm/processor.h b/arch/parisc/include/asm/processor.h index cc2290a3cace..198a86feb574 100644 --- a/arch/parisc/include/asm/processor.h +++ b/arch/parisc/include/asm/processor.h @@ -30,6 +30,8 @@ #endif #define current_text_addr() ({ void *pc; current_ia(pc); pc; }) +#define HAVE_ARCH_PICK_MMAP_LAYOUT + #define TASK_SIZE_OF(tsk) ((tsk)->thread.task_size) #define TASK_SIZE TASK_SIZE_OF(current) #define TASK_UNMAPPED_BASE (current->thread.map_base) diff --git a/arch/parisc/include/asm/thread_info.h b/arch/parisc/include/asm/thread_info.h index d5f97ea3a4e1..4b9b10ce1f9d 100644 --- a/arch/parisc/include/asm/thread_info.h +++ b/arch/parisc/include/asm/thread_info.h @@ -76,6 +76,16 @@ struct thread_info { #define _TIF_SYSCALL_TRACE_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \ _TIF_BLOCKSTEP | _TIF_SYSCALL_AUDIT) +#ifdef CONFIG_64BIT +# ifdef CONFIG_COMPAT +# define is_32bit_task() (test_thread_flag(TIF_32BIT)) +# else +# define is_32bit_task() (0) +# endif +#else +# define is_32bit_task() (1) +#endif + #endif /* __KERNEL__ */ #endif /* _ASM_PARISC_THREAD_INFO_H */ diff --git a/arch/parisc/include/uapi/asm/errno.h b/arch/parisc/include/uapi/asm/errno.h index f3a8aa554841..c0ae62520d15 100644 --- a/arch/parisc/include/uapi/asm/errno.h +++ b/arch/parisc/include/uapi/asm/errno.h @@ -106,7 +106,7 @@ #define EALREADY 244 /* Operation already in progress */ #define EINPROGRESS 245 /* Operation now in progress */ -#define EWOULDBLOCK 246 /* Operation would block (Linux returns EAGAIN) */ +#define EWOULDBLOCK EAGAIN /* Operation would block (Not HPUX compliant) */ #define ENOTEMPTY 247 /* Directory not empty */ #define ENAMETOOLONG 248 /* File name too long */ #define ELOOP 249 /* Too many symbolic links encountered */ diff --git a/arch/parisc/include/uapi/asm/socket.h b/arch/parisc/include/uapi/asm/socket.h index 70b3674dac4e..fe35ceacf0e7 100644 --- a/arch/parisc/include/uapi/asm/socket.h +++ b/arch/parisc/include/uapi/asm/socket.h @@ -77,4 +77,6 @@ #define SO_MAX_PACING_RATE 0x4028 +#define SO_BPF_EXTENSIONS 0x4029 + #endif /* _UAPI_ASM_SOCKET_H */ diff --git a/arch/parisc/include/uapi/asm/stat.h b/arch/parisc/include/uapi/asm/stat.h index d76fbda5d62c..b606b366d0a7 100644 --- a/arch/parisc/include/uapi/asm/stat.h +++ b/arch/parisc/include/uapi/asm/stat.h @@ -5,67 +5,65 @@ struct stat { unsigned int st_dev; /* dev_t is 32 bits on parisc */ - ino_t st_ino; /* 32 bits */ - mode_t st_mode; /* 16 bits */ + unsigned int st_ino; /* 32 bits */ + unsigned short st_mode; /* 16 bits */ unsigned short st_nlink; /* 16 bits */ unsigned short st_reserved1; /* old st_uid */ unsigned short st_reserved2; /* old st_gid */ unsigned int st_rdev; - off_t st_size; - time_t st_atime; + signed int st_size; + signed int st_atime; unsigned int st_atime_nsec; - time_t st_mtime; + signed int st_mtime; unsigned int st_mtime_nsec; - time_t st_ctime; + signed int st_ctime; unsigned int st_ctime_nsec; int st_blksize; int st_blocks; unsigned int __unused1; /* ACL stuff */ unsigned int __unused2; /* network */ - ino_t __unused3; /* network */ + unsigned int __unused3; /* network */ unsigned int __unused4; /* cnodes */ unsigned short __unused5; /* netsite */ short st_fstype; unsigned int st_realdev; unsigned short st_basemode; unsigned short st_spareshort; - uid_t st_uid; - gid_t st_gid; + unsigned int st_uid; + unsigned int st_gid; unsigned int st_spare4[3]; }; #define STAT_HAVE_NSEC -typedef __kernel_off64_t off64_t; - struct hpux_stat64 { unsigned int st_dev; /* dev_t is 32 bits on parisc */ - ino_t st_ino; /* 32 bits */ - mode_t st_mode; /* 16 bits */ + unsigned int st_ino; /* 32 bits */ + unsigned short st_mode; /* 16 bits */ unsigned short st_nlink; /* 16 bits */ unsigned short st_reserved1; /* old st_uid */ unsigned short st_reserved2; /* old st_gid */ unsigned int st_rdev; - off64_t st_size; - time_t st_atime; + signed long long st_size; + signed int st_atime; unsigned int st_spare1; - time_t st_mtime; + signed int st_mtime; unsigned int st_spare2; - time_t st_ctime; + signed int st_ctime; unsigned int st_spare3; int st_blksize; - __u64 st_blocks; + unsigned long long st_blocks; unsigned int __unused1; /* ACL stuff */ unsigned int __unused2; /* network */ - ino_t __unused3; /* network */ + unsigned int __unused3; /* network */ unsigned int __unused4; /* cnodes */ unsigned short __unused5; /* netsite */ short st_fstype; unsigned int st_realdev; unsigned short st_basemode; unsigned short st_spareshort; - uid_t st_uid; - gid_t st_gid; + unsigned int st_uid; + unsigned int st_gid; unsigned int st_spare4[3]; }; diff --git a/arch/parisc/include/uapi/asm/unistd.h b/arch/parisc/include/uapi/asm/unistd.h index 2c8b9bde18eb..42706794a36f 100644 --- a/arch/parisc/include/uapi/asm/unistd.h +++ b/arch/parisc/include/uapi/asm/unistd.h @@ -826,8 +826,10 @@ #define __NR_process_vm_writev (__NR_Linux + 331) #define __NR_kcmp (__NR_Linux + 332) #define __NR_finit_module (__NR_Linux + 333) +#define __NR_sched_setattr (__NR_Linux + 334) +#define __NR_sched_getattr (__NR_Linux + 335) -#define __NR_Linux_syscalls (__NR_finit_module + 1) +#define __NR_Linux_syscalls (__NR_sched_getattr + 1) #define __IGNORE_select /* newselect */ diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c index a72545554a31..ac87a40502e6 100644 --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -388,6 +388,20 @@ void flush_kernel_dcache_page_addr(void *addr) } EXPORT_SYMBOL(flush_kernel_dcache_page_addr); +void copy_user_page(void *vto, void *vfrom, unsigned long vaddr, + struct page *pg) +{ + /* Copy using kernel mapping. No coherency is needed (all in + kunmap) for the `to' page. However, the `from' page needs to + be flushed through a mapping equivalent to the user mapping + before it can be accessed through the kernel mapping. */ + preempt_disable(); + flush_dcache_page_asm(__pa(vfrom), vaddr); + preempt_enable(); + copy_page_asm(vto, vfrom); +} +EXPORT_SYMBOL(copy_user_page); + void purge_tlb_entries(struct mm_struct *mm, unsigned long addr) { unsigned long flags; diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c index 14285caec71a..dba508fe1683 100644 --- a/arch/parisc/kernel/drivers.c +++ b/arch/parisc/kernel/drivers.c @@ -282,18 +282,6 @@ find_pa_parent_type(const struct parisc_device *padev, int type) return NULL; } -#ifdef CONFIG_PCI -static inline int is_pci_dev(struct device *dev) -{ - return dev->bus == &pci_bus_type; -} -#else -static inline int is_pci_dev(struct device *dev) -{ - return 0; -} -#endif - /* * get_node_path fills in @path with the firmware path to the device. * Note that if @node is a parisc device, we don't fill in the 'mod' field. @@ -306,7 +294,7 @@ static void get_node_path(struct device *dev, struct hardware_path *path) int i = 5; memset(&path->bc, -1, 6); - if (is_pci_dev(dev)) { + if (dev_is_pci(dev)) { unsigned int devfn = to_pci_dev(dev)->devfn; path->mod = PCI_FUNC(devfn); path->bc[i--] = PCI_SLOT(devfn); @@ -314,7 +302,7 @@ static void get_node_path(struct device *dev, struct hardware_path *path) } while (dev != &root) { - if (is_pci_dev(dev)) { + if (dev_is_pci(dev)) { unsigned int devfn = to_pci_dev(dev)->devfn; path->bc[i--] = PCI_SLOT(devfn) | (PCI_FUNC(devfn)<< 5); } else if (dev->bus == &parisc_bus_type) { @@ -695,7 +683,7 @@ static int check_parent(struct device * dev, void * data) if (dev->bus == &parisc_bus_type) { if (match_parisc_device(dev, d->index, d->modpath)) d->dev = dev; - } else if (is_pci_dev(dev)) { + } else if (dev_is_pci(dev)) { if (match_pci_device(dev, d->index, d->modpath)) d->dev = dev; } else if (dev->bus == NULL) { @@ -753,7 +741,7 @@ struct device *hwpath_to_device(struct hardware_path *modpath) if (!parent) return NULL; } - if (is_pci_dev(parent)) /* pci devices already parse MOD */ + if (dev_is_pci(parent)) /* pci devices already parse MOD */ return parent; else return parse_tree_node(parent, 6, modpath); @@ -772,7 +760,7 @@ void device_to_hwpath(struct device *dev, struct hardware_path *path) padev = to_parisc_device(dev); get_node_path(dev->parent, path); path->mod = padev->hw_path; - } else if (is_pci_dev(dev)) { + } else if (dev_is_pci(dev)) { get_node_path(dev, path); } } diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c index 55f92b614182..0bbbf0d3f608 100644 --- a/arch/parisc/kernel/process.c +++ b/arch/parisc/kernel/process.c @@ -13,7 +13,7 @@ * Copyright (C) 2000 Grant Grundler <grundler with parisc-linux.org> * Copyright (C) 2001 Alan Modra <amodra at parisc-linux.org> * Copyright (C) 2001-2002 Ryan Bradetich <rbrad at parisc-linux.org> - * Copyright (C) 2001-2007 Helge Deller <deller at parisc-linux.org> + * Copyright (C) 2001-2014 Helge Deller <deller@gmx.de> * Copyright (C) 2002 Randolph Chung <tausq with parisc-linux.org> * * @@ -49,6 +49,7 @@ #include <linux/kallsyms.h> #include <linux/uaccess.h> #include <linux/rcupdate.h> +#include <linux/random.h> #include <asm/io.h> #include <asm/asm-offsets.h> @@ -286,3 +287,21 @@ void *dereference_function_descriptor(void *ptr) return ptr; } #endif + +static inline unsigned long brk_rnd(void) +{ + /* 8MB for 32bit, 1GB for 64bit */ + if (is_32bit_task()) + return (get_random_int() & 0x7ffUL) << PAGE_SHIFT; + else + return (get_random_int() & 0x3ffffUL) << PAGE_SHIFT; +} + +unsigned long arch_randomize_brk(struct mm_struct *mm) +{ + unsigned long ret = PAGE_ALIGN(mm->brk + brk_rnd()); + + if (ret < mm->brk) + return mm->brk; + return ret; +} diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c index 0d3a9d4927b5..b7cadc4a06cd 100644 --- a/arch/parisc/kernel/sys_parisc.c +++ b/arch/parisc/kernel/sys_parisc.c @@ -5,6 +5,7 @@ * Copyright (C) 1999-2003 Matthew Wilcox <willy at parisc-linux.org> * Copyright (C) 2000-2003 Paul Bame <bame at parisc-linux.org> * Copyright (C) 2001 Thomas Bogendoerfer <tsbogend at parisc-linux.org> + * Copyright (C) 1999-2014 Helge Deller <deller@gmx.de> * * * This program is free software; you can redistribute it and/or modify @@ -23,6 +24,7 @@ */ #include <asm/uaccess.h> +#include <asm/elf.h> #include <linux/file.h> #include <linux/fs.h> #include <linux/linkage.h> @@ -32,78 +34,230 @@ #include <linux/syscalls.h> #include <linux/utsname.h> #include <linux/personality.h> +#include <linux/random.h> -static unsigned long get_unshared_area(unsigned long addr, unsigned long len) +/* we construct an artificial offset for the mapping based on the physical + * address of the kernel mapping variable */ +#define GET_LAST_MMAP(filp) \ + (filp ? ((unsigned long) filp->f_mapping) >> 8 : 0UL) +#define SET_LAST_MMAP(filp, val) \ + { /* nothing */ } + +static int get_offset(unsigned int last_mmap) { - struct vm_unmapped_area_info info; + return (last_mmap & (SHMLBA-1)) >> PAGE_SHIFT; +} - info.flags = 0; - info.length = len; - info.low_limit = PAGE_ALIGN(addr); - info.high_limit = TASK_SIZE; - info.align_mask = 0; - info.align_offset = 0; - return vm_unmapped_area(&info); +static unsigned long shared_align_offset(unsigned int last_mmap, + unsigned long pgoff) +{ + return (get_offset(last_mmap) + pgoff) << PAGE_SHIFT; } -/* - * We need to know the offset to use. Old scheme was to look for - * existing mapping and use the same offset. New scheme is to use the - * address of the kernel data structure as the seed for the offset. - * We'll see how that works... - * - * The mapping is cacheline aligned, so there's no information in the bottom - * few bits of the address. We're looking for 10 bits (4MB / 4k), so let's - * drop the bottom 8 bits and use bits 8-17. - */ -static int get_offset(struct address_space *mapping) +static inline unsigned long COLOR_ALIGN(unsigned long addr, + unsigned int last_mmap, unsigned long pgoff) { - return (unsigned long) mapping >> 8; + unsigned long base = (addr+SHMLBA-1) & ~(SHMLBA-1); + unsigned long off = (SHMLBA-1) & + (shared_align_offset(last_mmap, pgoff) << PAGE_SHIFT); + + return base + off; } -static unsigned long shared_align_offset(struct file *filp, unsigned long pgoff) +/* + * Top of mmap area (just below the process stack). + */ + +static unsigned long mmap_upper_limit(void) { - struct address_space *mapping = filp ? filp->f_mapping : NULL; + unsigned long stack_base; - return (get_offset(mapping) + pgoff) << PAGE_SHIFT; + /* Limit stack size to 1GB - see setup_arg_pages() in fs/exec.c */ + stack_base = rlimit_max(RLIMIT_STACK); + if (stack_base > (1 << 30)) + stack_base = 1 << 30; + + return PAGE_ALIGN(STACK_TOP - stack_base); } -static unsigned long get_shared_area(struct file *filp, unsigned long addr, - unsigned long len, unsigned long pgoff) + +unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, + unsigned long len, unsigned long pgoff, unsigned long flags) { + struct mm_struct *mm = current->mm; + struct vm_area_struct *vma; + unsigned long task_size = TASK_SIZE; + int do_color_align, last_mmap; struct vm_unmapped_area_info info; + if (len > task_size) + return -ENOMEM; + + do_color_align = 0; + if (filp || (flags & MAP_SHARED)) + do_color_align = 1; + last_mmap = GET_LAST_MMAP(filp); + + if (flags & MAP_FIXED) { + if ((flags & MAP_SHARED) && last_mmap && + (addr - shared_align_offset(last_mmap, pgoff)) + & (SHMLBA - 1)) + return -EINVAL; + goto found_addr; + } + + if (addr) { + if (do_color_align && last_mmap) + addr = COLOR_ALIGN(addr, last_mmap, pgoff); + else + addr = PAGE_ALIGN(addr); + + vma = find_vma(mm, addr); + if (task_size - len >= addr && + (!vma || addr + len <= vma->vm_start)) + goto found_addr; + } + info.flags = 0; info.length = len; - info.low_limit = PAGE_ALIGN(addr); - info.high_limit = TASK_SIZE; - info.align_mask = PAGE_MASK & (SHMLBA - 1); - info.align_offset = shared_align_offset(filp, pgoff); - return vm_unmapped_area(&info); + info.low_limit = mm->mmap_legacy_base; + info.high_limit = mmap_upper_limit(); + info.align_mask = last_mmap ? (PAGE_MASK & (SHMLBA - 1)) : 0; + info.align_offset = shared_align_offset(last_mmap, pgoff); + addr = vm_unmapped_area(&info); + +found_addr: + if (do_color_align && !last_mmap && !(addr & ~PAGE_MASK)) + SET_LAST_MMAP(filp, addr - (pgoff << PAGE_SHIFT)); + + return addr; } -unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, - unsigned long len, unsigned long pgoff, unsigned long flags) +unsigned long +arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + const unsigned long len, const unsigned long pgoff, + const unsigned long flags) { + struct vm_area_struct *vma; + struct mm_struct *mm = current->mm; + unsigned long addr = addr0; + int do_color_align, last_mmap; + struct vm_unmapped_area_info info; + +#ifdef CONFIG_64BIT + /* This should only ever run for 32-bit processes. */ + BUG_ON(!test_thread_flag(TIF_32BIT)); +#endif + + /* requested length too big for entire address space */ if (len > TASK_SIZE) return -ENOMEM; + + do_color_align = 0; + if (filp || (flags & MAP_SHARED)) + do_color_align = 1; + last_mmap = GET_LAST_MMAP(filp); + if (flags & MAP_FIXED) { - if ((flags & MAP_SHARED) && - (addr - shared_align_offset(filp, pgoff)) & (SHMLBA - 1)) + if ((flags & MAP_SHARED) && last_mmap && + (addr - shared_align_offset(last_mmap, pgoff)) + & (SHMLBA - 1)) return -EINVAL; - return addr; + goto found_addr; } - if (!addr) - addr = TASK_UNMAPPED_BASE; - if (filp || (flags & MAP_SHARED)) - addr = get_shared_area(filp, addr, len, pgoff); - else - addr = get_unshared_area(addr, len); + /* requesting a specific address */ + if (addr) { + if (do_color_align && last_mmap) + addr = COLOR_ALIGN(addr, last_mmap, pgoff); + else + addr = PAGE_ALIGN(addr); + vma = find_vma(mm, addr); + if (TASK_SIZE - len >= addr && + (!vma || addr + len <= vma->vm_start)) + goto found_addr; + } + + info.flags = VM_UNMAPPED_AREA_TOPDOWN; + info.length = len; + info.low_limit = PAGE_SIZE; + info.high_limit = mm->mmap_base; + info.align_mask = last_mmap ? (PAGE_MASK & (SHMLBA - 1)) : 0; + info.align_offset = shared_align_offset(last_mmap, pgoff); + addr = vm_unmapped_area(&info); + if (!(addr & ~PAGE_MASK)) + goto found_addr; + VM_BUG_ON(addr != -ENOMEM); + + /* + * A failed mmap() very likely causes application failure, + * so fall back to the bottom-up function here. This scenario + * can happen with large stack limits and large mmap() + * allocations. + */ + return arch_get_unmapped_area(filp, addr0, len, pgoff, flags); + +found_addr: + if (do_color_align && !last_mmap && !(addr & ~PAGE_MASK)) + SET_LAST_MMAP(filp, addr - (pgoff << PAGE_SHIFT)); return addr; } +static int mmap_is_legacy(void) +{ + if (current->personality & ADDR_COMPAT_LAYOUT) + return 1; + + /* parisc stack always grows up - so a unlimited stack should + * not be an indicator to use the legacy memory layout. + * if (rlimit(RLIMIT_STACK) == RLIM_INFINITY) + * return 1; + */ + + return sysctl_legacy_va_layout; +} + +static unsigned long mmap_rnd(void) +{ + unsigned long rnd = 0; + + /* + * 8 bits of randomness in 32bit mmaps, 20 address space bits + * 28 bits of randomness in 64bit mmaps, 40 address space bits + */ + if (current->flags & PF_RANDOMIZE) { + if (is_32bit_task()) + rnd = get_random_int() % (1<<8); + else + rnd = get_random_int() % (1<<28); + } + return rnd << PAGE_SHIFT; +} + +static unsigned long mmap_legacy_base(void) +{ + return TASK_UNMAPPED_BASE + mmap_rnd(); +} + +/* + * This function, called very early during the creation of a new + * process VM image, sets up which VM layout function to use: + */ +void arch_pick_mmap_layout(struct mm_struct *mm) +{ + mm->mmap_legacy_base = mmap_legacy_base(); + mm->mmap_base = mmap_upper_limit(); + + if (mmap_is_legacy()) { + mm->mmap_base = mm->mmap_legacy_base; + mm->get_unmapped_area = arch_get_unmapped_area; + } else { + mm->get_unmapped_area = arch_get_unmapped_area_topdown; + } +} + + asmlinkage unsigned long sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long fd, unsigned long pgoff) diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S index 0c9107285e66..8fa3fbb3e4d3 100644 --- a/arch/parisc/kernel/syscall_table.S +++ b/arch/parisc/kernel/syscall_table.S @@ -429,6 +429,8 @@ ENTRY_COMP(process_vm_writev) ENTRY_SAME(kcmp) ENTRY_SAME(finit_module) + ENTRY_SAME(sched_setattr) + ENTRY_SAME(sched_getattr) /* 335 */ /* Nothing yet */ diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c index 96f8168cf4ec..ae085ad0fba0 100644 --- a/arch/parisc/mm/init.c +++ b/arch/parisc/mm/init.c @@ -645,55 +645,30 @@ EXPORT_SYMBOL(empty_zero_page); void show_mem(unsigned int filter) { - int i,free = 0,total = 0,reserved = 0; - int shared = 0, cached = 0; + int total = 0,reserved = 0; + pg_data_t *pgdat; printk(KERN_INFO "Mem-info:\n"); show_free_areas(filter); - if (filter & SHOW_MEM_FILTER_PAGE_COUNT) - return; -#ifndef CONFIG_DISCONTIGMEM - i = max_mapnr; - while (i-- > 0) { - total++; - if (PageReserved(mem_map+i)) - reserved++; - else if (PageSwapCache(mem_map+i)) - cached++; - else if (!page_count(&mem_map[i])) - free++; - else - shared += page_count(&mem_map[i]) - 1; - } -#else - for (i = 0; i < npmem_ranges; i++) { - int j; - for (j = node_start_pfn(i); j < node_end_pfn(i); j++) { - struct page *p; - unsigned long flags; - - pgdat_resize_lock(NODE_DATA(i), &flags); - p = nid_page_nr(i, j) - node_start_pfn(i); - - total++; - if (PageReserved(p)) - reserved++; - else if (PageSwapCache(p)) - cached++; - else if (!page_count(p)) - free++; - else - shared += page_count(p) - 1; - pgdat_resize_unlock(NODE_DATA(i), &flags); - } + for_each_online_pgdat(pgdat) { + unsigned long flags; + int zoneid; + + pgdat_resize_lock(pgdat, &flags); + for (zoneid = 0; zoneid < MAX_NR_ZONES; zoneid++) { + struct zone *zone = &pgdat->node_zones[zoneid]; + if (!populated_zone(zone)) + continue; + + total += zone->present_pages; + reserved = zone->present_pages - zone->managed_pages; + } + pgdat_resize_unlock(pgdat, &flags); } -#endif + printk(KERN_INFO "%d pages of RAM\n", total); printk(KERN_INFO "%d reserved pages\n", reserved); - printk(KERN_INFO "%d pages shared\n", shared); - printk(KERN_INFO "%d pages swap cached\n", cached); - #ifdef CONFIG_DISCONTIGMEM { |
