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[PATCH] S2io: Performance improvements

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Hi,
This patch relates to mostly performance related changes.
1. Fixed incorrect computation of PANIC level in rx_buffer_level().
2. Removed unnecessary PIOs(read/write of tx_traffic_int and
   rx_traffic_int) from interrupt handler and removed read of
   general_int_status register from xmit routine.
3. Enable two-buffer mode(for Rx path) automatically for SGI
   systems. This improves Rx performance dramatically on
   SGI systems.

Signed-off-by: Ravinandan Arakali <ravinandan.arakali@neterion.com>
Signed-off-by: Raghavendra Koushik <raghavendra.koushik@neterion.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
raghavendra.koushik@neterion.com
2005-08-03 12:32:00 -07:00
committed by Jeff Garzik
parent 1ddc50d40a
commit fe11363832
2 changed files with 24 additions and 27 deletions
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5
drivers/net/s2io.h
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@@ -13,6 +13,11 @@
#ifndef _S2IO_H
#define _S2IO_H
/* Enable 2 buffer mode by default for SGI system */
#ifdef CONFIG_IA64_SGI_SN2
#define CONFIG_2BUFF_MODE
#endif
#define TBD 0
#define BIT(loc) (0x8000000000000000ULL >> (loc))
#define vBIT(val, loc, sz) (((u64)val) << (64-loc-sz))