diff options
author | Mike Travis <travis@sgi.com> | 2008-12-31 17:34:16 -0800 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2009-01-03 18:53:31 +0100 |
commit | 7eb19553369c46cc1fa64caf120cbcab1b597f7c (patch) | |
tree | ef1a3beae706b9497c845d0a2557ceb4d2754998 /arch/sh/kernel/sys_sh.c | |
parent | 6092848a2a23b660150a38bc06f59d75838d70c8 (diff) | |
parent | 8c384cdee3e04d6194a2c2b192b624754f990835 (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask
Conflicts:
arch/x86/kernel/io_apic.c
kernel/rcuclassic.c
kernel/sched.c
kernel/time/tick-sched.c
Signed-off-by: Mike Travis <travis@sgi.com>
[ mingo@elte.hu: backmerged typo fix for io_apic.c ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/sh/kernel/sys_sh.c')
-rw-r--r-- | arch/sh/kernel/sys_sh.c | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/arch/sh/kernel/sys_sh.c b/arch/sh/kernel/sys_sh.c index 38f098c9c72..58dfc02c7af 100644 --- a/arch/sh/kernel/sys_sh.c +++ b/arch/sh/kernel/sys_sh.c @@ -22,102 +22,10 @@ #include <linux/module.h> #include <linux/fs.h> #include <linux/ipc.h> -#include <asm/cacheflush.h> #include <asm/syscalls.h> #include <asm/uaccess.h> #include <asm/unistd.h> -unsigned long shm_align_mask = PAGE_SIZE - 1; /* Sane caches */ -EXPORT_SYMBOL(shm_align_mask); - -#ifdef CONFIG_MMU -/* - * To avoid cache aliases, we map the shared page with same color. - */ -#define COLOUR_ALIGN(addr, pgoff) \ - ((((addr) + shm_align_mask) & ~shm_align_mask) + \ - (((pgoff) << PAGE_SHIFT) & shm_align_mask)) - -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 start_addr; - int do_colour_align; - - if (flags & MAP_FIXED) { - /* We do not accept a shared mapping if it would violate - * cache aliasing constraints. - */ - if ((flags & MAP_SHARED) && (addr & shm_align_mask)) - return -EINVAL; - return addr; - } - - if (unlikely(len > TASK_SIZE)) - return -ENOMEM; - - do_colour_align = 0; - if (filp || (flags & MAP_SHARED)) - do_colour_align = 1; - - if (addr) { - if (do_colour_align) - addr = COLOUR_ALIGN(addr, pgoff); - else - addr = PAGE_ALIGN(addr); - - vma = find_vma(mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) - return addr; - } - - if (len > mm->cached_hole_size) { - start_addr = addr = mm->free_area_cache; - } else { - mm->cached_hole_size = 0; - start_addr = addr = TASK_UNMAPPED_BASE; - } - -full_search: - if (do_colour_align) - addr = COLOUR_ALIGN(addr, pgoff); - else - addr = PAGE_ALIGN(mm->free_area_cache); - - for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { - /* At this point: (!vma || addr < vma->vm_end). */ - if (unlikely(TASK_SIZE - len < addr)) { - /* - * Start a new search - just in case we missed - * some holes. - */ - if (start_addr != TASK_UNMAPPED_BASE) { - start_addr = addr = TASK_UNMAPPED_BASE; - mm->cached_hole_size = 0; - goto full_search; - } - return -ENOMEM; - } - if (likely(!vma || addr + len <= vma->vm_start)) { - /* - * Remember the place where we stopped the search: - */ - mm->free_area_cache = addr + len; - return addr; - } - if (addr + mm->cached_hole_size < vma->vm_start) - mm->cached_hole_size = vma->vm_start - addr; - - addr = vma->vm_end; - if (do_colour_align) - addr = COLOUR_ALIGN(addr, pgoff); - } -} -#endif /* CONFIG_MMU */ - static inline long do_mmap2(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, int fd, unsigned long pgoff) |