[PATCH v2 35/35] arch: decompose ARCH_NO_PREEMPT

Ankur Arora
2024-05-28T00:37:56Z

Now that ARCH_NO_PREEMPT is conditioned only on ARCH_NO_PREEMPT_TOGGLE,
decompose ARCH_NO_PREEMPT into ARCH_NO_PREEMPT_IRQ and
ARCH_NO_PREEMPT_TOGGLE. This allows architecture code to selectively
enable one or the other.

Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Brian Cain <bcain@quicinc.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com>
---
arch/alpha/Kconfig | 3 ++-
arch/hexagon/Kconfig | 3 ++-
arch/m68k/Kconfig | 3 ++-
arch/um/Kconfig | 3 ++-
4 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 3afd042150f8..7fd1d9dcad8d 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -6,7 +6,8 @@ config ALPHA
select ARCH_HAS_CURRENT_STACK_POINTER
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
- select ARCH_NO_PREEMPT
+ select ARCH_NO_PREEMPT_TOGGLE
+ select ARCH_NO_PREEMPT_IRQ
select ARCH_NO_SG_CHAIN
select ARCH_USE_CMPXCHG_LOCKREF
select DMA_OPS if PCI
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index e233b5efa276..3a33a26e1b81 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -6,7 +6,8 @@ config HEXAGON
def_bool y
select ARCH_32BIT_OFF_T
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
- select ARCH_NO_PREEMPT
+ select ARCH_NO_PREEMPT_TOGGLE
+ select ARCH_NO_PREEMPT_IRQ
select ARCH_WANT_FRAME_POINTERS
select DMA_GLOBAL_POOL
select HAVE_PAGE_SIZE_4KB
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 6ffa29585194..3f7d675849ed 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -11,7 +11,8 @@ config M68K
select ARCH_HAS_SYNC_DMA_FOR_DEVICE if M68K_NONCOHERENT_DMA
select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
- select ARCH_NO_PREEMPT if !COLDFIRE
+ select ARCH_NO_PREEMPT_TOGGLE if !COLDFIRE
+ select ARCH_NO_PREEMPT_IRQ if !COLDFIRE
select ARCH_USE_MEMTEST if MMU_MOTOROLA
select ARCH_WANT_IPC_PARSE_VERSION
select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index 93a5a8999b07..390328e97261 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -11,7 +11,8 @@ config UML
select ARCH_HAS_KCOV
select ARCH_HAS_STRNCPY_FROM_USER
select ARCH_HAS_STRNLEN_USER
- select ARCH_NO_PREEMPT
+ select ARCH_NO_PREEMPT_TOGGLE
+ select ARCH_NO_PREEMPT_IRQ
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_KASAN if X86_64
select HAVE_ARCH_KASAN_VMALLOC if HAVE_ARCH_KASAN
--
2.31.1