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09230cbc1b
This way we have one central definition of it, and user can select it as needed. The new option is not user visible, which is the behavior it had in most architectures, with a few notable exceptions: - On x86_64 and mips/loongson3 it used to be user selectable, but defaulted to y. It now is unconditional, which seems like the right thing for 64-bit architectures without guaranteed availablity of IOMMUs. - on powerpc the symbol is user selectable and defaults to n, but many boards select it. This change assumes no working setup required a manual selection, but if that turned out to be wrong we'll have to add another select statement or two for the respective boards. Signed-off-by: Christoph Hellwig <hch@lst.de>
80 lines
2.2 KiB
Plaintext
80 lines
2.2 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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if CPU_CAVIUM_OCTEON
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config CAVIUM_CN63XXP1
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bool "Enable CN63XXP1 errata workarounds"
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default "n"
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help
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The CN63XXP1 chip requires build time workarounds to
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function reliably, select this option to enable them. These
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workarounds will cause a slight decrease in performance on
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non-CN63XXP1 hardware, so it is recommended to select "n"
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unless it is known the workarounds are needed.
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config CAVIUM_OCTEON_CVMSEG_SIZE
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int "Number of L1 cache lines reserved for CVMSEG memory"
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range 0 54
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default 1
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help
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CVMSEG LM is a segment that accesses portions of the dcache as a
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local memory; the larger CVMSEG is, the smaller the cache is.
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This selects the size of CVMSEG LM, which is in cache blocks. The
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legally range is from zero to 54 cache blocks (i.e. CVMSEG LM is
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between zero and 6192 bytes).
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endif # CPU_CAVIUM_OCTEON
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if CAVIUM_OCTEON_SOC
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config CAVIUM_OCTEON_LOCK_L2
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bool "Lock often used kernel code in the L2"
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default "y"
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help
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Enable locking parts of the kernel into the L2 cache.
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config CAVIUM_OCTEON_LOCK_L2_TLB
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bool "Lock the TLB handler in L2"
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depends on CAVIUM_OCTEON_LOCK_L2
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default "y"
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help
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Lock the low level TLB fast path into L2.
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config CAVIUM_OCTEON_LOCK_L2_EXCEPTION
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bool "Lock the exception handler in L2"
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depends on CAVIUM_OCTEON_LOCK_L2
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default "y"
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help
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Lock the low level exception handler into L2.
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config CAVIUM_OCTEON_LOCK_L2_LOW_LEVEL_INTERRUPT
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bool "Lock the interrupt handler in L2"
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depends on CAVIUM_OCTEON_LOCK_L2
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default "y"
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help
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Lock the low level interrupt handler into L2.
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config CAVIUM_OCTEON_LOCK_L2_INTERRUPT
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bool "Lock the 2nd level interrupt handler in L2"
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depends on CAVIUM_OCTEON_LOCK_L2
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default "y"
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help
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Lock the 2nd level interrupt handler in L2.
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config CAVIUM_OCTEON_LOCK_L2_MEMCPY
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bool "Lock memcpy() in L2"
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depends on CAVIUM_OCTEON_LOCK_L2
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default "y"
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help
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Lock the kernel's implementation of memcpy() into L2.
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config OCTEON_ILM
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tristate "Module to measure interrupt latency using Octeon CIU Timer"
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help
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This driver is a module to measure interrupt latency using the
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the CIU Timers on Octeon.
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To compile this driver as a module, choose M here. The module
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will be called octeon-ilm
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endif # CAVIUM_OCTEON_SOC
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