[PATCH v9 04/15] Kconfig: move ARCH_HAS_OPTIMIZED_POLL to arch/Kconfig

[Ankur Arora <ankur.a.arora@oracle.com>]

From: Joao Martins <joao.m.martins@oracle.com>

ARCH_HAS_OPTIMIZED_POLL gates selection of polling while idle in
poll_idle(). Move the configuration option to arch/Kconfig to allow
non-x86 architectures to select it.

Note that ARCH_HAS_OPTIMIZED_POLL should probably be exclusive with
GENERIC_IDLE_POLL_SETUP (which controls the generic polling logic in
cpu_idle_poll()). However, that would remove boot options
(hlt=, nohlt=). So, leave it untouched for now.

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Mihai Carabas <mihai.carabas@oracle.com>
Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com>
---
 arch/Kconfig     | 3 +++
 arch/x86/Kconfig | 4 +---
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/arch/Kconfig b/arch/Kconfig
index bd9f095d69fa..c3a9de71c09f 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -273,6 +273,9 @@ config HAVE_ARCH_TRACEHOOK
 config HAVE_DMA_CONTIGUOUS
 	bool
 
+config ARCH_HAS_OPTIMIZED_POLL
+	bool
+
 config GENERIC_SMP_IDLE_THREAD
 	bool
 
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 3fa741dc0445..df75df8467d1 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -138,6 +138,7 @@ config X86
 	select ARCH_WANTS_NO_INSTR
 	select ARCH_WANT_GENERAL_HUGETLB
 	select ARCH_WANT_HUGE_PMD_SHARE
+	select ARCH_HAS_OPTIMIZED_POLL
 	select ARCH_WANT_LD_ORPHAN_WARN
 	select ARCH_WANT_OPTIMIZE_DAX_VMEMMAP	if X86_64
 	select ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP	if X86_64
@@ -378,9 +379,6 @@ config ARCH_MAY_HAVE_PC_FDC
 config GENERIC_CALIBRATE_DELAY
 	def_bool y
 
-config ARCH_HAS_OPTIMIZED_POLL
-	def_bool y
-
 config ARCH_HIBERNATION_POSSIBLE
 	def_bool y
 
-- 
2.43.5