diff options
| author | Andrew Morton <akpm@osdl.org> | 2004-03-31 21:50:47 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2004-03-31 21:50:47 -0800 |
| commit | 8d507e4ebbedba393e2385dd73b9c1ee480a6acf (patch) | |
| tree | dc7fb22faf12673c073707b6a5d0e89fbc2b4ebc | |
| parent | e9acfc13953a90f474b88e1c0bd4cb7071a65e35 (diff) | |
[PATCH] ppc64: add useful warning message in hugepage code
From: David Gibson <david@gibson.dropbear.id.au>
This patch adds a debugging message to the ppc64 hugepage code when we
attempt to open the "low" (32-bit) hugepage window on PPC64, but can't
because a (non-hugepage) mapping already exists in the region.
| -rw-r--r-- | arch/ppc64/mm/hugetlbpage.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/ppc64/mm/hugetlbpage.c b/arch/ppc64/mm/hugetlbpage.c index 3a50af4962dd..ed3d4ce2e590 100644 --- a/arch/ppc64/mm/hugetlbpage.c +++ b/arch/ppc64/mm/hugetlbpage.c @@ -253,8 +253,11 @@ static int open_32bit_htlbpage_range(struct mm_struct *mm) /* Check no VMAs are in the region */ vma = find_vma(mm, TASK_HPAGE_BASE_32); - if (vma && (vma->vm_start < TASK_HPAGE_END_32)) + if (vma && (vma->vm_start < TASK_HPAGE_END_32)) { + printk(KERN_DEBUG "Low HTLB region busy: PID=%d vma @ %lx-%lx\n", + current->pid, vma->vm_start, vma->vm_end); return -EBUSY; + } /* Clean up any leftover PTE pages in the region */ spin_lock(&mm->page_table_lock); |