1 files changed, 4 insertions, 22 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 49896a2a1d72..c930b8ceb418 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1403,7 +1403,6 @@ config MIPS_MT_SMTC
         depends on CPU_MIPS32_R2
         #depends on CPU_MIPS64_R2               # once there is hardware ...
         depends on SYS_SUPPORTS_MULTITHREADING
-        select GENERIC_CLOCKEVENTS_BROADCAST
         select CPU_MIPSR2_IRQ_VI
         select CPU_MIPSR2_IRQ_EI
         select MIPS_MT
@@ -1451,32 +1450,17 @@ config MIPS_VPE_LOADER
           Includes a loader for loading an elf relocatable object
           onto another VPE and running it.
 
-config MIPS_MT_SMTC_INSTANT_REPLAY
-        bool "Low-latency Dispatch of Deferred SMTC IPIs"
-        depends on MIPS_MT_SMTC && !PREEMPT
-        default y
-        help
-          SMTC pseudo-interrupts between TCs are deferred and queued
-          if the target TC is interrupt-inhibited (IXMT). In the first
-          SMTC prototypes, these queued IPIs were serviced on return
-          to user mode, or on entry into the kernel idle loop. The
-          INSTANT_REPLAY option dispatches them as part of local_irq_restore()
-          processing, which adds runtime overhead (hence the option to turn
-          it off), but ensures that IPIs are handled promptly even under
-          heavy I/O interrupt load.
-
 config MIPS_MT_SMTC_IM_BACKSTOP
         bool "Use per-TC register bits as backstop for inhibited IM bits"
         depends on MIPS_MT_SMTC
-        default y
+        default n
         help
           To support multiple TC microthreads acting as "CPUs" within
           a VPE, VPE-wide interrupt mask bits must be specially manipulated
           during interrupt handling. To support legacy drivers and interrupt
           controller management code, SMTC has a "backstop" to track and
           if necessary restore the interrupt mask. This has some performance
-          impact on interrupt service overhead. Disable it only if you know
-          what you are doing.
+          impact on interrupt service overhead.
 
 config MIPS_MT_SMTC_IRQAFF
         bool "Support IRQ affinity API"
@@ -1486,10 +1470,8 @@ config MIPS_MT_SMTC_IRQAFF
           Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
           for SMTC Linux kernel. Requires platform support, of which
           an example can be found in the MIPS kernel i8259 and Malta
-          platform code.  It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
-          be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
-          interrupt dispatch, and should be used only if you know what
-          you are doing.
+          platform code.  Adds some overhead to interrupt dispatch, and
+          should be used only if you know what you are doing.
 
 config MIPS_VPE_LOADER_TOM
         bool "Load VPE program into memory hidden from linux"