Add LITMUS^RT core implementation

This patch adds the core of LITMUS^RT:

 - library functionality (heaps, rt_domain, prioritization, etc.)
 - budget enforcement logic
 - job management
 - system call backends
 - virtual devices (control page, etc.)
 - scheduler plugin API (and dummy plugin)

This code compiles, but is not yet integrated with the rest of Linux.

1 files changed, 21 insertions, 0 deletions

diff --git a/include/litmus/unistd_32.h b/include/litmus/unistd_32.h
new file mode 100644
index 000000000000..94264c27d9ac
--- /dev/null
+++ b/include/litmus/unistd_32.h
@@ -0,0 +1,21 @@
+/*
+ * included from arch/x86/include/asm/unistd_32.h
+ *
+ * LITMUS^RT syscalls with "relative" numbers
+ */
+#define __LSC(x) (__NR_LITMUS + x)
+
+#define __NR_set_rt_task_param  __LSC(0)
+#define __NR_get_rt_task_param  __LSC(1)
+#define __NR_complete_job       __LSC(2)
+#define __NR_od_open            __LSC(3)
+#define __NR_od_close           __LSC(4)
+#define __NR_litmus_lock        __LSC(5)
+#define __NR_litmus_unlock      __LSC(6)
+#define __NR_query_job_no       __LSC(7)
+#define __NR_wait_for_job_release __LSC(8)
+#define __NR_wait_for_ts_release __LSC(9)
+#define __NR_release_ts         __LSC(10)
+#define __NR_null_call          __LSC(11)
+
+#define NR_litmus_syscalls 12