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authorGlenn Elliott <gelliott@koruna.cs.unc.edu>2010-05-20 14:33:27 -0400
committerAndrea Bastoni <bastoni@cs.unc.edu>2010-05-30 11:27:34 -0400
commit6f89d4f31485546674187cf3b4d472f230b263d0 (patch)
treea9417ea7121e19228870b1e42b323f3bc149af2e /include/litmus/rt_param.h
parent521422c4ef2c64731f709030915a7b301709f4b4 (diff)
Added support for choices in budget policy enforcement.
NO_ENFORCEMENT - A job may execute beyond its declared execution time. Jobs notify the kernel that they are complete via liblitmus's sleep_next_period() QUANTUM_ENFORCEMENT - The kernel terminates a job if its actual execution time exceeds the declared execution time. PRECISE_ENFORCEMENT - Hook declared, but not yet implemented. Plan to support this policy through hrtimers. Error thrown if specified.
Diffstat (limited to 'include/litmus/rt_param.h')
-rw-r--r--include/litmus/rt_param.h11
1 files changed, 9 insertions, 2 deletions
diff --git a/include/litmus/rt_param.h b/include/litmus/rt_param.h
index 5b94d1a8eea7..a7a183f34a80 100644
--- a/include/litmus/rt_param.h
+++ b/include/litmus/rt_param.h
@@ -27,12 +27,19 @@ typedef enum {
27 RT_CLASS_BEST_EFFORT 27 RT_CLASS_BEST_EFFORT
28} task_class_t; 28} task_class_t;
29 29
30typedef enum {
31 NO_ENFORCEMENT, /* job may overrun unhindered */
32 QUANTUM_ENFORCEMENT, /* budgets are only checked on quantum boundaries */
33 PRECISE_ENFORCEMENT /* NOT IMPLEMENTED - enforced with hrtimers */
34} budget_policy_t;
35
30struct rt_task { 36struct rt_task {
31 lt_t exec_cost; 37 lt_t exec_cost;
32 lt_t period; 38 lt_t period;
33 lt_t phase; 39 lt_t phase;
34 unsigned int cpu; 40 unsigned int cpu;
35 task_class_t cls; 41 task_class_t cls;
42 budget_policy_t budget_policy; /* ignored by pfair */
36}; 43};
37 44
38/* The definition of the data that is shared between the kernel and real-time 45/* The definition of the data that is shared between the kernel and real-time