bitkeeper revision 1.1159.221.1 (41ebbfeezjfpGp20MD6f6Xl2r6Wd3Q)

Added new simple EDF scheduler

1 files changed, 45 insertions, 0 deletions

diff --git a/tools/libxc/xc_sedf.c b/tools/libxc/xc_sedf.c
new file mode 100644
index 0000000000..92c052fe23
--- /dev/null
+++ b/tools/libxc/xc_sedf.c
@@ -0,0 +1,45 @@
+/******************************************************************************
+ * xc_sedf.c
+ * 
+ * API for manipulating parameters of the Simple EDF scheduler.
+ * 
+ * changes by Stephan Diestelhorst
+ * based on code
+ * by Mark Williamson, Copyright (c) 2004 Intel Research Cambridge.
+ */
+
+#include "xc_private.h"
+
+int xc_sedf_domain_set(int xc_handle,
+                          u32 domid, u64 period, u64 slice)
+{
+    dom0_op_t op;
+    struct sedf_adjdom *p = &op.u.adjustdom.u.sedf;
+
+    op.cmd = DOM0_ADJUSTDOM;
+    op.u.adjustdom.domain  = (domid_t)domid;
+    op.u.adjustdom.sched_id = SCHED_SEDF;
+    op.u.adjustdom.direction = SCHED_INFO_PUT;
+
+    p->period   = period;
+    p->slice    = slice;
+    return do_dom0_op(xc_handle, &op);
+}
+
+int xc_sedf_domain_get(int xc_handle, u32 domid, u64 *period, u64 *slice)
+{
+    dom0_op_t op;
+    int ret;
+    struct sedf_adjdom *p = &op.u.adjustdom.u.sedf;
+
+    op.cmd = DOM0_ADJUSTDOM;    
+    op.u.adjustdom.domain = (domid_t)domid;
+    op.u.adjustdom.sched_id = SCHED_SEDF;
+    op.u.adjustdom.direction = SCHED_INFO_GET;
+
+    ret = do_dom0_op(xc_handle, &op);
+
+    *period   = p->period;
+    *slice    = p->slice;
+    return ret;
+}