5f0a17d83a
From Intel(R) 64 and IA-32 Architectures Software Developer's Manual, one lock or semaphore is suggested to be present within a cache line. If the processors are based on Intel NetBurst microarchitecture, two cache lines are suggested. This could minimize the bus traffic required to service locks. Cc: Michael Kinney <michael.d.kinney@intel.com> Cc: Liming Gao <liming.gao@intel.com> Cc: Star Zeng <star.zeng@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jeff Fan <jeff.fan@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com>
30 lines
842 B
C
30 lines
842 B
C
/** @file
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Internal function to get spin lock alignment.
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Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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/**
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Internal function to retrieve the architecture specific spin lock alignment
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requirements for optimal spin lock performance.
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@return The architecture specific spin lock alignment.
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**/
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UINTN
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InternalGetSpinLockProperties (
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VOID
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)
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{
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return 32;
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}
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