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ixgbe: Replace eitr_low and eitr_high with static values in ixgbe_update_itr

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There isn't much point in using variables to store the values of eitr_low
and eitr_high since they are not user changeable.  As such I am replacing
them with the constants 10 and 20 in order to avoid any confusion on what
the values actually are.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck 2012-02-08 07:50:20 +00:00 committed by Jeff Kirsher
parent bdda1a61c1
commit 621bd70eda
2 changed files with 8 additions and 17 deletions
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4
drivers/net/ethernet/intel/ixgbe/ixgbe.h
View file

@ -511,10 +511,6 @@ struct ixgbe_adapter {
#endif /* IXGBE_FCOE */
u32 wol;
/* Interrupt Throttle Rate */
u16 eitr_low;
u16 eitr_high;
u16 bd_number;
u16 eeprom_verh;

21
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
View file

@ -1782,20 +1782,19 @@ enum latency_range {
static void ixgbe_update_itr(struct ixgbe_q_vector *q_vector,
struct ixgbe_ring_container *ring_container)
{
u64 bytes_perint;
struct ixgbe_adapter *adapter = q_vector->adapter;
int bytes = ring_container->total_bytes;
int packets = ring_container->total_packets;
u32 timepassed_us;
u64 bytes_perint;
u8 itr_setting = ring_container->itr;
if (packets == 0)
return;
/* simple throttlerate management
* 0-20MB/s lowest (100000 ints/s)
* 20-100MB/s low (20000 ints/s)
* 100-1249MB/s bulk (8000 ints/s)
* 0-10MB/s lowest (100000 ints/s)
* 10-20MB/s low (20000 ints/s)
* 20-1249MB/s bulk (8000 ints/s)
*/
/* what was last interrupt timeslice? */
timepassed_us = q_vector->itr >> 2;
@ -1803,17 +1802,17 @@ static void ixgbe_update_itr(struct ixgbe_q_vector *q_vector,
switch (itr_setting) {
case lowest_latency:
if (bytes_perint > adapter->eitr_low)
if (bytes_perint > 10)
itr_setting = low_latency;
break;
case low_latency:
if (bytes_perint > adapter->eitr_high)
if (bytes_perint > 20)
itr_setting = bulk_latency;
else if (bytes_perint <= adapter->eitr_low)
else if (bytes_perint <= 10)
itr_setting = lowest_latency;
break;
case bulk_latency:
if (bytes_perint <= adapter->eitr_high)
if (bytes_perint <= 20)
itr_setting = low_latency;
break;
}
@ -5239,10 +5238,6 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
adapter->rx_itr_setting = 1;
adapter->tx_itr_setting = 1;
/* set defaults for eitr in MegaBytes */
adapter->eitr_low = 10;
adapter->eitr_high = 20;
/* set default ring sizes */
adapter->tx_ring_count = IXGBE_DEFAULT_TXD;
adapter->rx_ring_count = IXGBE_DEFAULT_RXD;