VPP-425: Scheduler policy & priority configuration

Add ability to hadle scheduling policy and priority via config file.
CPU section contains new items to specify scheduling policy and
priority:

cpu {
scheduler-priority <num>
scheduler-policy [other | batch | idle | fifo | rr ]
}

Change-Id: Ie20765280e458e1d7deb4a8c66daaa69793f795e
Signed-off-by: Pavel Kotucek <pkotucek@cisco.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/vlib/vlib/threads.h b/vlib/vlib/threads.h
index 4283b70a61d..589d1f3a1ec 100644
--- a/vlib/vlib/threads.h
+++ b/vlib/vlib/threads.h
@@ -16,6 +16,7 @@
 #define included_vlib_threads_h
 
 #include <vlib/main.h>
+#include <linux/sched.h>
 
 vlib_main_t **vlib_mains;
 
@@ -257,6 +258,21 @@ typedef struct vlib_efd_t
   u8 pad;
 } vlib_efd_t;
 
+#define foreach_sched_policy \
+  _(SCHED_OTHER, OTHER, "other") \
+  _(SCHED_BATCH, BATCH, "batch") \
+  _(SCHED_IDLE, IDLE, "idle")   \
+  _(SCHED_FIFO, FIFO, "fifo")   \
+  _(SCHED_RR, RR, "rr")
+
+typedef enum
+{
+#define _(v,f,s) SCHED_POLICY_##f = v,
+  foreach_sched_policy
+#undef _
+    SCHED_POLICY_N,
+} sched_policy_t;
+
 typedef struct
 {
   /* Link list of registrations, built by constructors */
@@ -314,6 +330,12 @@ typedef struct
   /* worker thread initialization barrier */
   volatile u32 worker_thread_release;
 
+  /* scheduling policy */
+  u32 sched_policy;
+
+  /* scheduling policy priority */
+  u32 sched_priority;
+
 } vlib_thread_main_t;
 
 vlib_thread_main_t vlib_thread_main;