Merge branch 'wip-2.6.34' into old-private-masterarchived-private-master

1 files changed, 17 insertions, 156 deletions

diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
index e2d102447a43..3d435c42e6db 100644
--- a/arch/sparc/kernel/sys_sparc_64.c
+++ b/arch/sparc/kernel/sys_sparc_64.c
@@ -27,7 +27,6 @@
 
 #include <asm/uaccess.h>
 #include <asm/utrap.h>
-#include <asm/perfctr.h>
 #include <asm/unistd.h>
 
 #include "entry.h"
@@ -317,10 +316,14 @@ bottomup:
 unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags)
 {
         unsigned long align_goal, addr = -ENOMEM;
+        unsigned long (*get_area)(struct file *, unsigned long,
+                                  unsigned long, unsigned long, unsigned long);
+
+        get_area = current->mm->get_unmapped_area;
 
         if (flags & MAP_FIXED) {
                 /* Ok, don't mess with it. */
-                return get_unmapped_area(NULL, orig_addr, len, pgoff, flags);
+                return get_area(NULL, orig_addr, len, pgoff, flags);
         }
         flags &= ~MAP_SHARED;
 
@@ -333,7 +336,7 @@ unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, u
                 align_goal = (64UL * 1024);
 
         do {
-                addr = get_unmapped_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags);
+                addr = get_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags);
                 if (!(addr & ~PAGE_MASK)) {
                         addr = (addr + (align_goal - 1UL)) & ~(align_goal - 1UL);
                         break;
@@ -351,7 +354,7 @@ unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, u
          * be obtained.
          */
         if (addr & ~PAGE_MASK)
-                addr = get_unmapped_area(NULL, orig_addr, len, pgoff, flags);
+                addr = get_area(NULL, orig_addr, len, pgoff, flags);
 
         return addr;
 }
@@ -361,6 +364,7 @@ EXPORT_SYMBOL(get_fb_unmapped_area);
 void arch_pick_mmap_layout(struct mm_struct *mm)
 {
         unsigned long random_factor = 0UL;
+        unsigned long gap;
 
         if (current->flags & PF_RANDOMIZE) {
                 random_factor = get_random_int();
@@ -375,9 +379,10 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
          * Fall back to the standard layout if the personality
          * bit is set, or if the expected stack growth is unlimited:
          */
+        gap = rlimit(RLIMIT_STACK);
         if (!test_thread_flag(TIF_32BIT) ||
             (current->personality & ADDR_COMPAT_LAYOUT) ||
-            current->signal->rlim[RLIMIT_STACK].rlim_cur == RLIM_INFINITY ||
+            gap == RLIM_INFINITY ||
             sysctl_legacy_va_layout) {
                 mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
                 mm->get_unmapped_area = arch_get_unmapped_area;
@@ -385,9 +390,7 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
         } else {
                 /* We know it's 32-bit */
                 unsigned long task_size = STACK_TOP32;
-                unsigned long gap;
 
-                gap = current->signal->rlim[RLIMIT_STACK].rlim_cur;
                 if (gap < 128 * 1024 * 1024)
                         gap = 128 * 1024 * 1024;
                 if (gap > (task_size / 6 * 5))
@@ -399,18 +402,6 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
         }
 }
 
-SYSCALL_DEFINE1(sparc_brk, unsigned long, brk)
-{
-        /* People could try to be nasty and use ta 0x6d in 32bit programs */
-        if (test_thread_flag(TIF_32BIT) && brk >= STACK_TOP32)
-                return current->mm->brk;
-
-        if (unlikely(straddles_64bit_va_hole(current->mm->brk, brk)))
-                return current->mm->brk;
-
-        return sys_brk(brk);
-}
-                                                                
 /*
  * sys_pipe() is the normal C calling standard for creating
  * a pipe. It's not the way unix traditionally does this, though.
@@ -435,7 +426,7 @@ out:
  * This is really horribly ugly.
  */
 
-SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second,
+SYSCALL_DEFINE6(sparc_ipc, unsigned int, call, int, first, unsigned long, second,
                 unsigned long, third, void __user *, ptr, long, fifth)
 {
         long err;
@@ -519,17 +510,6 @@ out:
         return err;
 }
 
-SYSCALL_DEFINE1(sparc64_newuname, struct new_utsname __user *, name)
-{
-        int ret = sys_newuname(name);
-        
-        if (current->personality == PER_LINUX32 && !ret) {
-                ret = (copy_to_user(name->machine, "sparc\0\0", 8)
-                       ? -EFAULT : 0);
-        }
-        return ret;
-}
-
 SYSCALL_DEFINE1(sparc64_personality, unsigned long, personality)
 {
         int ret;
@@ -568,23 +548,13 @@ SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len,
                 unsigned long, prot, unsigned long, flags, unsigned long, fd,
                 unsigned long, off)
 {
-        struct file * file = NULL;
-        unsigned long retval = -EBADF;
+        unsigned long retval = -EINVAL;
 
-        if (!(flags & MAP_ANONYMOUS)) {
-                file = fget(fd);
-                if (!file)
-                        goto out;
-        }
-        flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
-        len = PAGE_ALIGN(len);
-
-        down_write(&current->mm->mmap_sem);
-        retval = do_mmap(file, addr, len, prot, flags, off);
-        up_write(&current->mm->mmap_sem);
-
-        if (file)
-                fput(file);
+        if ((off + PAGE_ALIGN(len)) < off)
+                goto out;
+        if (off & ~PAGE_MASK)
+                goto out;
+        retval = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
 out:
         return retval;
 }
@@ -614,12 +584,6 @@ SYSCALL_DEFINE5(64_mremap, unsigned long, addr,	unsigned long, old_len,
 
         if (test_thread_flag(TIF_32BIT))
                 goto out;
-        if (unlikely(new_len >= VA_EXCLUDE_START))
-                goto out;
-        if (unlikely(sparc_mmap_check(addr, old_len)))
-                goto out;
-        if (unlikely(sparc_mmap_check(new_addr, new_len)))
-                goto out;
 
         down_write(&current->mm->mmap_sem);
         ret = do_mremap(addr, old_len, new_len, flags, new_addr);
@@ -790,109 +754,6 @@ SYSCALL_DEFINE5(rt_sigaction, int, sig, const struct sigaction __user *, act,
         return ret;
 }
 
-/* Invoked by rtrap code to update performance counters in
- * user space.
- */
-asmlinkage void update_perfctrs(void)
-{
-        unsigned long pic, tmp;
-
-        read_pic(pic);
-        tmp = (current_thread_info()->kernel_cntd0 += (unsigned int)pic);
-        __put_user(tmp, current_thread_info()->user_cntd0);
-        tmp = (current_thread_info()->kernel_cntd1 += (pic >> 32));
-        __put_user(tmp, current_thread_info()->user_cntd1);
-        reset_pic();
-}
-
-SYSCALL_DEFINE4(perfctr, int, opcode, unsigned long, arg0,
-                unsigned long, arg1, unsigned long, arg2)
-{
-        int err = 0;
-
-        switch(opcode) {
-        case PERFCTR_ON:
-                current_thread_info()->pcr_reg = arg2;
-                current_thread_info()->user_cntd0 = (u64 __user *) arg0;
-                current_thread_info()->user_cntd1 = (u64 __user *) arg1;
-                current_thread_info()->kernel_cntd0 =
-                        current_thread_info()->kernel_cntd1 = 0;
-                write_pcr(arg2);
-                reset_pic();
-                set_thread_flag(TIF_PERFCTR);
-                break;
-
-        case PERFCTR_OFF:
-                err = -EINVAL;
-                if (test_thread_flag(TIF_PERFCTR)) {
-                        current_thread_info()->user_cntd0 =
-                                current_thread_info()->user_cntd1 = NULL;
-                        current_thread_info()->pcr_reg = 0;
-                        write_pcr(0);
-                        clear_thread_flag(TIF_PERFCTR);
-                        err = 0;
-                }
-                break;
-
-        case PERFCTR_READ: {
-                unsigned long pic, tmp;
-
-                if (!test_thread_flag(TIF_PERFCTR)) {
-                        err = -EINVAL;
-                        break;
-                }
-                read_pic(pic);
-                tmp = (current_thread_info()->kernel_cntd0 += (unsigned int)pic);
-                err |= __put_user(tmp, current_thread_info()->user_cntd0);
-                tmp = (current_thread_info()->kernel_cntd1 += (pic >> 32));
-                err |= __put_user(tmp, current_thread_info()->user_cntd1);
-                reset_pic();
-                break;
-        }
-
-        case PERFCTR_CLRPIC:
-                if (!test_thread_flag(TIF_PERFCTR)) {
-                        err = -EINVAL;
-                        break;
-                }
-                current_thread_info()->kernel_cntd0 =
-                        current_thread_info()->kernel_cntd1 = 0;
-                reset_pic();
-                break;
-
-        case PERFCTR_SETPCR: {
-                u64 __user *user_pcr = (u64 __user *)arg0;
-
-                if (!test_thread_flag(TIF_PERFCTR)) {
-                        err = -EINVAL;
-                        break;
-                }
-                err |= __get_user(current_thread_info()->pcr_reg, user_pcr);
-                write_pcr(current_thread_info()->pcr_reg);
-                current_thread_info()->kernel_cntd0 =
-                        current_thread_info()->kernel_cntd1 = 0;
-                reset_pic();
-                break;
-        }
-
-        case PERFCTR_GETPCR: {
-                u64 __user *user_pcr = (u64 __user *)arg0;
-
-                if (!test_thread_flag(TIF_PERFCTR)) {
-                        err = -EINVAL;
-                        break;
-                }
-                err |= __put_user(current_thread_info()->pcr_reg, user_pcr);
-                break;
-        }
-
-        default:
-                err = -EINVAL;
-                break;
-        };
-        return err;
-}
-
 /*
  * Do a system call from kernel instead of calling sys_execve so we
  * end up with proper pt_regs.