1 files changed, 102 insertions, 0 deletions

diff --git a/litmus/Kconfig b/litmus/Kconfig
index 94b48e199577..158261e0ed08 100644
--- a/litmus/Kconfig
+++ b/litmus/Kconfig
@@ -215,4 +215,106 @@ config PREEMPT_STATE_TRACE
 
 endmenu
 
+menu "Interrupt Handling"
+
+config LITMUS_THREAD_ALL_SOFTIRQ
+       bool "Process all softirqs in ksoftirqd threads."
+       default n
+       help
+             (Experimental) Thread all softirqs to ksoftirqd
+                 daemon threads, similar to PREEMPT_RT.  I/O
+                 throughput will will drop with this enabled, but
+                 latencies due to interrupts will be reduced.
+
+                 WARNING: Timer responsiveness will likely be
+                 decreased as timer callbacks are also threaded.
+                 This is unlike PREEEMPT_RTs hardirqs.
+
+                If unsure, say No.
+
+
+choice 
+        prompt "Scheduling of interrupt bottom-halves in Litmus."
+        default LITMUS_SOFTIRQD_NONE
+        depends on LITMUS_LOCKING && !LITMUS_THREAD_ALL_SOFTIRQ
+        help
+                Schedule tasklets with known priorities in Litmus.
+
+config LITMUS_SOFTIRQD_NONE
+        bool "No tasklet scheduling in Litmus."
+        help
+          Don't schedule tasklets in Litmus.  Default.
+
+config LITMUS_SOFTIRQD
+        bool "Spawn klitirqd interrupt handling threads."
+        help
+          Create klitirqd interrupt handling threads.  Work must be
+          specifically dispatched to these workers.  (Softirqs for
+          Litmus tasks are not magically redirected to klitirqd.)
+
+          G-EDF/RM, C-EDF/RM ONLY for now!
+
+
+config LITMUS_PAI_SOFTIRQD
+        bool "Defer tasklets to context switch points."
+        help
+          Only execute scheduled tasklet bottom halves at
+          scheduling points.  Trades context switch overhead
+          at the cost of non-preemptive durations of bottom half
+          processing.
+                 
+          G-EDF/RM, C-EDF/RM ONLY for now!       
+                 
+endchoice          
+           
+
+config NR_LITMUS_SOFTIRQD
+           int "Number of klitirqd."
+           depends on LITMUS_SOFTIRQD
+           range 1 4096
+           default "1"
+           help
+             Should be <= to the number of CPUs in your system.
+
+config LITMUS_NVIDIA
+          bool "Litmus handling of NVIDIA interrupts."
+          depends on LITMUS_SOFTIRQD || LITMUS_PAI_SOFTIRQD
+          default n
+          help
+            Direct tasklets from NVIDIA devices to Litmus's klitirqd.
+
+                If unsure, say No.
+
+config NV_DEVICE_NUM
+           int "Number of NVIDIA GPUs."
+           depends on LITMUS_SOFTIRQD || LITMUS_PAI_SOFTIRQD
+           range 1 4096
+           default "1"
+           help
+             Should be (<= to the number of CPUs) and
+                 (<= to the number of GPUs) in your system.
+
+choice
+          prompt "CUDA/Driver Version Support"
+          default CUDA_4_0
+          depends on LITMUS_NVIDIA
+          help
+                Select the version of CUDA/driver to support.
+        
+config CUDA_4_0
+          bool "CUDA 4.0"
+          depends on LITMUS_NVIDIA
+          help
+                Support CUDA 4.0 RC2 (dev. driver version: x86_64-270.40)
+
+config CUDA_3_2
+          bool "CUDA 3.2"
+          depends on LITMUS_NVIDIA
+          help
+                Support CUDA 3.2 (dev. driver version: x86_64-260.24)
+
+endchoice
+
+endmenu
+
 endmenu