padata: simplify serialization mechanism

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We count the number of processed objects on a percpu basis,
so we need to go through all the percpu reorder queues to calculate
the sequence number of the next object that needs serialization.
This patch changes this to count the number of processed objects
global. So we can calculate the sequence number and the percpu
reorder queue of the next object that needs serialization without
searching through the percpu reorder queues. This avoids some
accesses to memory of foreign cpus.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

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Steffen Klassert 2010-07-07 15:32:39 +02:00 • committed by Herbert Xu

parent 83f619f3c8

commit 5f1a8c1bc7

2 changed files with 22 additions and 55 deletions

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6

include/linux/padata.h

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69

kernel/padata.c

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