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| author | Christoph Lameter <cl@linux-foundation.org> | 2010-01-05 15:34:50 +0900 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2010-01-05 15:34:50 +0900 |
| commit | e1783a240f491fb233f04edc042e16b18a7a79ba (patch) | |
| tree | b523bf2db00fff96f1ab488168fc16ab56c372aa /kernel/trace | |
| parent | 38b7827fcdd660f591d645bd3ae6644456a4773c (diff) | |
| download | op-kernel-dev-e1783a240f491fb233f04edc042e16b18a7a79ba.zip op-kernel-dev-e1783a240f491fb233f04edc042e16b18a7a79ba.tar.gz | |
module: Use this_cpu_xx to dynamically allocate counters
Use cpu ops to deal with the per cpu data instead of a local_t. Reduces memory
requirements, cache footprint and decreases cycle counts.
The this_cpu_xx operations are also used for !SMP mode. Otherwise we could
not drop the use of __module_ref_addr() which would make per cpu data handling
complicated. this_cpu_xx operations have their own fallback for !SMP.
V8-V9:
- Leave include asm/module.h since ringbuffer.c depends on it. Nothing else
does though. Another patch will deal with that.
- Remove spurious free.
Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/trace')
0 files changed, 0 insertions, 0 deletions
