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author | Ingo Molnar <mingo@elte.hu> | 2009-09-15 12:18:15 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-09-15 12:18:15 +0200 |
commit | dca2d6ac09d9ef59ff46820d4f0c94b08a671202 (patch) | |
tree | fdec753b842dad09e3a4151954fab3eb5c43500d /Documentation/vm | |
parent | tracing: Fix ring-buffer and ksym tracer merge interaction (diff) | |
parent | Merge branch 'for-linus3' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 (diff) | |
download | linux-dev-dca2d6ac09d9ef59ff46820d4f0c94b08a671202.tar.xz linux-dev-dca2d6ac09d9ef59ff46820d4f0c94b08a671202.zip |
Merge branch 'linus' into tracing/hw-breakpoints
Conflicts:
arch/x86/kernel/process_64.c
Semantic conflict fixed in:
arch/x86/kvm/x86.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/vm')
-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 bb1f5c6e28b3..510917ff59ed 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: |