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arm64: Unconditionally support {ARCH_}HAVE_NMI{_SAFE_CMPXCHG} 

From what I can see there isn't anything about ACPI_APEI_SEA that
means the arm64 architecture can or cannot support NMI safe
cmpxchg or NMIs, so the 'if' condition here is not important.
Let's remove it. Doing that allows us to support ftrace
histograms via CONFIG_HIST_TRIGGERS that depends on the arch
having the ARCH_HAVE_NMI_SAFE_CMPXCHG config selected.

Cc: Tyler Baicar <tbaicar@codeaurora.org>
Cc: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org>
Cc: Dongjiu Geng <gengdongjiu@huawei.com>
Acked-by: James Morse <james.morse@arm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
hifive-unleashed-5.1
Stephen Boyd 2017-09-27 08:51:30 -07:00 committed by Will Deacon
parent d1809d0e64
commit 396a5d4a5c
1 changed files with 2 additions and 2 deletions
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arch/arm64/Kconfig
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@ -21,7 +21,7 @@ config ARM64
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_STRICT_MODULE_RWX
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAVE_NMI_SAFE_CMPXCHG if ACPI_APEI_SEA
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_USE_CMPXCHG_LOCKREF
select ARCH_SUPPORTS_MEMORY_FAILURE
select ARCH_SUPPORTS_ATOMIC_RMW
@ -98,7 +98,7 @@ config ARM64
select HAVE_IRQ_TIME_ACCOUNTING
select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP if NUMA
select HAVE_NMI if ACPI_APEI_SEA
select HAVE_NMI
select HAVE_PATA_PLATFORM
select HAVE_PERF_EVENTS
select HAVE_PERF_REGS