locking/atomic: delete !ARCH_ATOMIC remnants

Now that all architectures implement ARCH_ATOMIC, we can make it
mandatory, removing the Kconfig symbol and logic for !ARCH_ATOMIC.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210525140232.53872-33-mark.rutland@arm.com

24 files changed, 0 insertions, 26 deletions

diff --git a/arch/Kconfig b/arch/Kconfig
index 3fb3b12d4a95..c45b770d3579 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -11,9 +11,6 @@ source "arch/$(SRCARCH)/Kconfig"
 
 menu "General architecture-dependent options"
 
-config ARCH_ATOMIC
-	bool
-
 config CRASH_CORE
 	bool
 
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 7920fc2e2a2a..5998106faa60 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -2,7 +2,6 @@
 config ALPHA
 	bool
 	default y
-	select ARCH_ATOMIC
 	select ARCH_32BIT_USTAT_F_TINODE
 	select ARCH_MIGHT_HAVE_PC_PARPORT
 	select ARCH_MIGHT_HAVE_PC_SERIO
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 098ecc72d048..2d98501c0897 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -6,7 +6,6 @@
 config ARC
 	def_bool y
 	select ARC_TIMERS
-	select ARCH_ATOMIC
 	select ARCH_HAS_CACHE_LINE_SIZE
 	select ARCH_HAS_DEBUG_VM_PGTABLE
 	select ARCH_HAS_DMA_PREP_COHERENT
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index b7334a6643b9..24804f11302d 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -3,7 +3,6 @@ config ARM
 	bool
 	default y
 	select ARCH_32BIT_OFF_T
-	select ARCH_ATOMIC
 	select ARCH_HAS_BINFMT_FLAT
 	select ARCH_HAS_DEBUG_VIRTUAL if MMU
 	select ARCH_HAS_DMA_WRITE_COMBINE if !ARM_DMA_MEM_BUFFERABLE
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 62ab429d1f42..9f1d8566bbf9 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -9,7 +9,6 @@ config ARM64
 	select ACPI_MCFG if (ACPI && PCI)
 	select ACPI_SPCR_TABLE if ACPI
 	select ACPI_PPTT if ACPI
-	select ARCH_ATOMIC
 	select ARCH_HAS_DEBUG_WX
 	select ARCH_BINFMT_ELF_STATE
 	select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION
diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig
index 3521f14bcd96..8de5b987edb9 100644
--- a/arch/csky/Kconfig
+++ b/arch/csky/Kconfig
@@ -2,7 +2,6 @@
 config CSKY
 	def_bool y
 	select ARCH_32BIT_OFF_T
-	select ARCH_ATOMIC
 	select ARCH_HAS_DMA_PREP_COHERENT
 	select ARCH_HAS_GCOV_PROFILE_ALL
 	select ARCH_HAS_SYNC_DMA_FOR_CPU
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index bdf05ad3206a..3e3e0f16f7e0 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -2,7 +2,6 @@
 config H8300
         def_bool y
 	select ARCH_32BIT_OFF_T
-	select ARCH_ATOMIC
 	select ARCH_HAS_BINFMT_FLAT
 	select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
 	select BINFMT_FLAT_OLD_ALWAYS_RAM
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index 1368954ef679..44a409967af1 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -5,7 +5,6 @@ comment "Linux Kernel Configuration for Hexagon"
 config HEXAGON
 	def_bool y
 	select ARCH_32BIT_OFF_T
-	select ARCH_ATOMIC
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
 	select ARCH_NO_PREEMPT
 	# Other pending projects/to-do items.
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index c5414dcd5d0d..279252e3e0f7 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -8,7 +8,6 @@ menu "Processor type and features"
 
 config IA64
 	bool
-	select ARCH_ATOMIC
 	select ARCH_HAS_DMA_MARK_CLEAN
 	select ARCH_MIGHT_HAVE_PC_PARPORT
 	select ARCH_MIGHT_HAVE_PC_SERIO
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index d1d91ac47f51..372e4e69c43a 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -3,7 +3,6 @@ config M68K
 	bool
 	default y
 	select ARCH_32BIT_OFF_T
-	select ARCH_ATOMIC
 	select ARCH_HAS_BINFMT_FLAT
 	select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 5a52922dc225..0660f47012bc 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -2,7 +2,6 @@
 config MICROBLAZE
 	def_bool y
 	select ARCH_32BIT_OFF_T
-	select ARCH_ATOMIC
 	select ARCH_NO_SWAP
 	select ARCH_HAS_DMA_PREP_COHERENT
 	select ARCH_HAS_GCOV_PROFILE_ALL
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 55b4da96872f..ed51970c08e7 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -3,7 +3,6 @@ config MIPS
 	bool
 	default y
 	select ARCH_32BIT_OFF_T if !64BIT
-	select ARCH_ATOMIC
 	select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
 	select ARCH_HAS_DEBUG_VIRTUAL if !64BIT
 	select ARCH_HAS_FORTIFY_SOURCE
diff --git a/arch/nds32/Kconfig b/arch/nds32/Kconfig
index 352913573aee..62313902d75d 100644
--- a/arch/nds32/Kconfig
+++ b/arch/nds32/Kconfig
@@ -7,7 +7,6 @@
 config NDS32
 	def_bool y
 	select ARCH_32BIT_OFF_T
-	select ARCH_ATOMIC
 	select ARCH_HAS_DMA_PREP_COHERENT
 	select ARCH_HAS_SYNC_DMA_FOR_CPU
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index 67dae88c5b53..c24955c81c92 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -2,7 +2,6 @@
 config NIOS2
 	def_bool y
 	select ARCH_32BIT_OFF_T
-	select ARCH_ATOMIC
 	select ARCH_HAS_DMA_PREP_COHERENT
 	select ARCH_HAS_SYNC_DMA_FOR_CPU
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index 8c50bc9674f5..591acc5990dc 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -7,7 +7,6 @@
 config OPENRISC
 	def_bool y
 	select ARCH_32BIT_OFF_T
-	select ARCH_ATOMIC
 	select ARCH_HAS_DMA_SET_UNCACHED
 	select ARCH_HAS_DMA_CLEAR_UNCACHED
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index bfa120a4add1..bde9907bc5b2 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -2,7 +2,6 @@
 config PARISC
 	def_bool y
 	select ARCH_32BIT_OFF_T if !64BIT
-	select ARCH_ATOMIC
 	select ARCH_MIGHT_HAVE_PC_PARPORT
 	select HAVE_IDE
 	select HAVE_FUNCTION_TRACER
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index d143c2b616f0..088dd2afcfe4 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -118,7 +118,6 @@ config PPC
 	# Please keep this list sorted alphabetically.
 	#
 	select ARCH_32BIT_OFF_T if PPC32
-	select ARCH_ATOMIC
 	select ARCH_ENABLE_MEMORY_HOTPLUG
 	select ARCH_ENABLE_MEMORY_HOTREMOVE
 	select ARCH_HAS_COPY_MC			if PPC64
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index c59b9f4a9d62..a8ad8eb76120 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -12,7 +12,6 @@ config 32BIT
 
 config RISCV
 	def_bool y
-	select ARCH_ATOMIC
 	select ARCH_CLOCKSOURCE_INIT
 	select ARCH_SUPPORTS_ATOMIC_RMW
 	select ARCH_SUPPORTS_DEBUG_PAGEALLOC if MMU
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 85374a36c69e..b4c7c34069f8 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -58,7 +58,6 @@ config S390
 	# Note: keep this list sorted alphabetically
 	#
 	imply IMA_SECURE_AND_OR_TRUSTED_BOOT
-	select ARCH_ATOMIC
 	select ARCH_32BIT_USTAT_F_TINODE
 	select ARCH_BINFMT_ELF_STATE
 	select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index d2925cbb6fa4..68129537e350 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -2,7 +2,6 @@
 config SUPERH
 	def_bool y
 	select ARCH_32BIT_OFF_T
-	select ARCH_ATOMIC
 	select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM && MMU
 	select ARCH_ENABLE_MEMORY_HOTREMOVE if SPARSEMEM && MMU
 	select ARCH_HAVE_CUSTOM_GPIO_H
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 46790083e918..164a5254c91c 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -13,7 +13,6 @@ config 64BIT
 config SPARC
 	bool
 	default y
-	select ARCH_ATOMIC
 	select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
 	select ARCH_MIGHT_HAVE_PC_SERIO
 	select DMA_OPS
diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index 4370a9521ea4..57cfd9a1c082 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -5,7 +5,6 @@ menu "UML-specific options"
 config UML
 	bool
 	default y
-	select ARCH_ATOMIC
 	select ARCH_EPHEMERAL_INODES
 	select ARCH_HAS_KCOV
 	select ARCH_NO_PREEMPT
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 11a27563033d..0045e1b44190 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -58,7 +58,6 @@ config X86
 	#
 	select ACPI_LEGACY_TABLES_LOOKUP	if ACPI
 	select ACPI_SYSTEM_POWER_STATES_SUPPORT	if ACPI
-	select ARCH_ATOMIC
 	select ARCH_32BIT_OFF_T			if X86_32
 	select ARCH_CLOCKSOURCE_INIT
 	select ARCH_ENABLE_HUGEPAGE_MIGRATION if X86_64 && HUGETLB_PAGE && MIGRATION
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 39bb9bdae6b1..2332b2156993 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -2,7 +2,6 @@
 config XTENSA
 	def_bool y
 	select ARCH_32BIT_OFF_T
-	select ARCH_ATOMIC
 	select ARCH_HAS_BINFMT_FLAT if !MMU
 	select ARCH_HAS_DMA_PREP_COHERENT if MMU
 	select ARCH_HAS_SYNC_DMA_FOR_CPU if MMU