Searched hist:"39 dfb71bc03c5a4015d25611c0f1121991d548e6" (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/drivers/net/ethernet/intel/ixgbe/ |
| H A D | ixgbe_ptp.c | diff 39dfb71bc03c5a4015d25611c0f1121991d548e6 Wed Dec 05 00:51:29 CST 2012 Alexander Duyck <alexander.h.duyck@intel.com> ixgbe: Inline Rx PTP descriptor handling
This change is meant to inline the Rx PTP descriptor handling. The main
motivation is to avoid unnecessary jumps into function calls that we then
immediately exit because we are not performing timestamps.
The net result of this change is that ixgbe_ptp_rx_tstamp drops from .5% CPU
utilization in my performance runs to 0%, and the only value tested is the Rx
descriptor which should already be warm in the cache if not stored in a
register.
Cc: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Jacob Keller <Jacob.e.keller@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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| H A D | ixgbe.h | diff 39dfb71bc03c5a4015d25611c0f1121991d548e6 Wed Dec 05 00:51:29 CST 2012 Alexander Duyck <alexander.h.duyck@intel.com> ixgbe: Inline Rx PTP descriptor handling
This change is meant to inline the Rx PTP descriptor handling. The main
motivation is to avoid unnecessary jumps into function calls that we then
immediately exit because we are not performing timestamps.
The net result of this change is that ixgbe_ptp_rx_tstamp drops from .5% CPU
utilization in my performance runs to 0%, and the only value tested is the Rx
descriptor which should already be warm in the cache if not stored in a
register.
Cc: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Jacob Keller <Jacob.e.keller@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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