diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2009-03-20 13:30:37 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-03-21 19:06:58 -0700 |
| commit | 6fb70fd1b57707a5c7b9fb167b7790b2cba13f04 (patch) | |
| tree | 311192bd4de07e1da571f1a6ac6a3ad123ab3f50 /drivers/net/sfc/falcon.h | |
| parent | 85451a951b9511605475fadcc0a8d3aeccefded8 (diff) | |
| download | linux-6fb70fd1b57707a5c7b9fb167b7790b2cba13f04.tar.gz linux-6fb70fd1b57707a5c7b9fb167b7790b2cba13f04.tar.bz2 linux-6fb70fd1b57707a5c7b9fb167b7790b2cba13f04.zip | |
sfc: Implement adaptive IRQ moderation
Calculate a score for each 1000 IRQs:
- TX completions are worth 1 point
- RX completions are worth 4 if merged using LRO or 2 otherwise
Reduce moderation if the score is less than 10000, down to a minimum
of 5 us. Increase moderation if the score is more than 20000, up to
the specified maximum.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/sfc/falcon.h')
| -rw-r--r-- | drivers/net/sfc/falcon.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/sfc/falcon.h b/drivers/net/sfc/falcon.h index 7869c3d74383..77f2e0db7ca1 100644 --- a/drivers/net/sfc/falcon.h +++ b/drivers/net/sfc/falcon.h @@ -85,6 +85,8 @@ extern void falcon_set_int_moderation(struct efx_channel *channel); extern void falcon_disable_interrupts(struct efx_nic *efx); extern void falcon_fini_interrupt(struct efx_nic *efx); +#define FALCON_IRQ_MOD_RESOLUTION 5 + /* Global Resources */ extern int falcon_probe_nic(struct efx_nic *efx); extern int falcon_probe_resources(struct efx_nic *efx); |