diff options
| author |   Mike Marciniszyn <mike.marciniszyn@intel.com> | 2013-05-30 18:25:25 -0400 |
|---|---|---|
| committer |   Roland Dreier <roland@purestorage.com> | 2013-06-21 17:19:38 -0700 |
| commit | 8469ba39a6b77917e8879680aed17229bf72f263 (patch) | |
| tree | f064dfaf3387f3ed5d59d69941b90825fe628729 /drivers/infiniband/hw/qib/qib.h | |
| parent | ndisc: Convert use of typedef ctl_table to struct ctl_table (diff) | |
| download | linux-dev-8469ba39a6b77917e8879680aed17229bf72f263.tar.xz linux-dev-8469ba39a6b77917e8879680aed17229bf72f263.zip | |
IB/qib: Add DCA support
This patch adds DCA cache warming for systems that support DCA.
The code uses cpu affinity notification to react to an affinity change
from a user mode program like irqbalance and (re-)program the chip
accordingly. This notification avoids reading the current cpu on every
interrupt.
Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
[ Add Kconfig dependency on SMP && GENERIC_HARDIRQS to avoid failure to
build due to undefined struct irq_affinity_notify. - Roland ]
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/qib/qib.h')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h index 4d11575c2010..cecbd43f9212 100644 --- a/drivers/infiniband/hw/qib/qib.h +++ b/drivers/infiniband/hw/qib/qib.h @@ -428,9 +428,19 @@ struct qib_verbs_txreq { #define ACTIVITY_TIMER 5 #define MAX_NAME_SIZE 64 + +#ifdef CONFIG_INFINIBAND_QIB_DCA +struct qib_irq_notify; +#endif + struct qib_msix_entry { struct msix_entry msix; void *arg; +#ifdef CONFIG_INFINIBAND_QIB_DCA + int dca; + int rcv; + struct qib_irq_notify *notifier; +#endif char name[MAX_NAME_SIZE]; cpumask_var_t mask; }; @@ -828,6 +838,9 @@ struct qib_devdata { struct qib_ctxtdata *); void (*f_writescratch)(struct qib_devdata *, u32); int (*f_tempsense_rd)(struct qib_devdata *, int regnum); +#ifdef CONFIG_INFINIBAND_QIB_DCA + int (*f_notify_dca)(struct qib_devdata *, unsigned long event); +#endif char *boardname; /* human readable board info */ |