2010-01-04 22:37:11

by Christoph Lameter

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Subject: [this_cpu_xx V9 0/7] Per cpu atomics in page allocator, modules, cleanup and optimized inc/dec

Leftovers from the earlier patchset rediffed to 2.6.33-rc2.
Mostly applications of per cpu counters to core components and cleanup patches.

After this patchset there will be only one user of local_t left: Mathieu's
trace ringbuffer.

V8->V9
- Split patches for the module logic differently.
- Fix spurious free in module patch.
- Drop ringbuffer stuff. Needs more discussion.
- Drop slub patches (already in Pekka's tree and in -next)
- Add SPARC cleanup patch.

V7->V8
- Fix issue in slub patch
- Fix issue in modules patch
- Rediff page allocator patch
- Provide new this_cpu ops needed for ringbuffer [RFC state]

V6->V7
- Drop patches merged in 2.6.33 merge cycle
- Drop risky slub patches

V5->V6:
- Drop patches merged by Tejun.
- Drop irqless slub fastpath for now.
- Patches against Tejun percpu for-next branch.

V4->V5:
- Avoid setup_per_cpu_area() modifications and fold the remainder of the
patch into the page allocator patch.
- Irq disable / per cpu ptr fixes for page allocator patch.

V3->V4:
- Fix various macro definitions.
- Provide experimental percpu based fastpath that does not disable
interrupts for SLUB.

V2->V3:
- Available via git tree against latest upstream from
git://git.kernel.org/pub/scm/linux/kernel/git/christoph/percpu.git linus
- Rework SLUB per cpu operations. Get rid of dynamic DMA slab creation
for CONFIG_ZONE_DMA
- Create fallback framework so that 64 bit ops on 32 bit platforms
can fallback to the use of preempt or interrupt disable. 64 bit
platforms can use 64 bit atomic per cpu ops.

V1->V2:
- Various minor fixes
- Add SLUB conversion
- Add Page allocator conversion
- Patch against the git tree of today


2010-01-05 06:32:49

by Tejun Heo

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Subject: Re: [this_cpu_xx V9 0/7] Per cpu atomics in page allocator, modules, cleanup and optimized inc/dec

1-7 applied to the following git branch.

git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu.git percpu

and also pushed out to linux-next. Please base further changes on top
of the #percpu branch.

Thanks.

--
tejun