[MIPS] IRQ Affinity Support for SMTC on Malta Platform

[powerpc.git] / arch / mips / Kconfig

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 3b807b4..b09eee2 100644 (file)
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1378,6 +1378,19 @@ config MIPS_MT_SMTC_IM_BACKSTOP
          impact on interrupt service overhead. Disable it only if you know
          what you are doing.
 
+config MIPS_MT_SMTC_IRQAFF
+       bool "Support IRQ affinity API"
+       depends on MIPS_MT_SMTC
+       default n
+       help
+         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.
+
 config MIPS_VPE_LOADER_TOM
        bool "Load VPE program into memory hidden from linux"
        depends on MIPS_VPE_LOADER