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| author | Paul Mundt <lethal@linux-sh.org> | 2009-09-16 13:48:32 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-09-16 13:48:32 +0900 |
| commit | ea88023b3491a384575ebcd5e8a449e841a28a24 (patch) | |
| tree | f46e3d8302e44dc55ce31823501e100472d29683 /Documentation/vm/slub.txt | |
| parent | a6f15ade97989d414e9bf33874c9d5d1f39808ec (diff) | |
| parent | 0cb583fd2862f19ea88b02eb307d11c09e51e2f8 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
arch/sh/kernel/vmlinux.lds.S
Diffstat (limited to 'Documentation/vm/slub.txt')
| -rw-r--r-- | Documentation/vm/slub.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/vm/slub.txt b/Documentation/vm/slub.txt index bb1f5c6e28b..510917ff59e 100644 --- a/Documentation/vm/slub.txt +++ b/Documentation/vm/slub.txt @@ -41,6 +41,8 @@ Possible debug options are P Poisoning (object and padding) U User tracking (free and alloc) T Trace (please only use on single slabs) + O Switch debugging off for caches that would have + caused higher minimum slab orders - Switch all debugging off (useful if the kernel is configured with CONFIG_SLUB_DEBUG_ON) @@ -59,6 +61,14 @@ to the dentry cache with slub_debug=F,dentry +Debugging options may require the minimum possible slab order to increase as +a result of storing the metadata (for example, caches with PAGE_SIZE object +sizes). This has a higher liklihood of resulting in slab allocation errors +in low memory situations or if there's high fragmentation of memory. To +switch off debugging for such caches by default, use + + slub_debug=O + In case you forgot to enable debugging on the kernel command line: It is possible to enable debugging manually when the kernel is up. Look at the contents of: |