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crypto: caam - one tasklet per job ring

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there is no noticeable benefit for multiple cores to process one
job ring's output ring: in fact, we can benefit from cache effects
of having the back-half stay on the core that receives a particular
ring's interrupts, and further relax general contention and the
locking involved with reading outring_used, since tasklets run
atomically.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Kim Phillips
2012-06-22 19:48:57 -05:00
committed by Herbert Xu
parent 14a8e29cc2
commit a0ca6ca022
2 changed files with 6 additions and 9 deletions
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2
drivers/crypto/caam/intern.h
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@@ -43,7 +43,7 @@ struct caam_drv_private_jr {
struct device *parentdev; /* points back to controller dev */
int ridx;
struct caam_job_ring __iomem *rregs; /* JobR's register space */
struct tasklet_struct irqtask[NR_CPUS];
struct tasklet_struct irqtask;
int irq; /* One per queue */
int assign; /* busy/free */