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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2012-04-20 16:20:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-04-20 17:29:13 -0700 |
| commit | a46ef99d80817a167477ed1c8b4d90ee0c2e726f (patch) | |
| tree | 3d8c980c627e8b9c009dbf63628a9be8b8d1069f /arch/ia64/kernel | |
| parent | VM: add "vm_brk()" helper function (diff) | |
| download | linux-dev-a46ef99d80817a167477ed1c8b4d90ee0c2e726f.tar.xz linux-dev-a46ef99d80817a167477ed1c8b4d90ee0c2e726f.zip | |
VM: add "vm_munmap()" helper function
Like the vm_brk() function, this is the same as "do_munmap()", except it
does the VM locking for the caller.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/ia64/kernel')
| -rw-r--r-- | arch/ia64/kernel/perfmon.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c index 9d0fd7d5bb82..2777310b698b 100644 --- a/arch/ia64/kernel/perfmon.c +++ b/arch/ia64/kernel/perfmon.c @@ -605,9 +605,9 @@ pfm_unprotect_ctx_ctxsw(pfm_context_t *x, unsigned long f) } static inline unsigned int -pfm_do_munmap(struct mm_struct *mm, unsigned long addr, size_t len, int acct) +pfm_vm_munmap(struct mm_struct *mm, unsigned long addr, size_t len) { - return do_munmap(mm, addr, len); + return vm_munmap(mm, addr, len); } static inline unsigned long @@ -1473,13 +1473,8 @@ pfm_remove_smpl_mapping(struct task_struct *task, void *vaddr, unsigned long siz /* * does the actual unmapping */ - down_write(&task->mm->mmap_sem); - - DPRINT(("down_write done smpl_vaddr=%p size=%lu\n", vaddr, size)); + r = pfm_vm_munmap(task->mm, (unsigned long)vaddr, size); - r = pfm_do_munmap(task->mm, (unsigned long)vaddr, size, 0); - - up_write(&task->mm->mmap_sem); if (r !=0) { printk(KERN_ERR "perfmon: [%d] unable to unmap sampling buffer @%p size=%lu\n", task_pid_nr(task), vaddr, size); } |