P-FP: trace more debugging info

...and make per-processor state available in gdb.

1 files changed, 13 insertions, 2 deletions

diff --git a/litmus/sched_pfp.c b/litmus/sched_pfp.c
index 29f1efdcffc6..a86f7df04f85 100644
--- a/litmus/sched_pfp.c
+++ b/litmus/sched_pfp.c
@@ -38,6 +38,8 @@ typedef struct {
 
 DEFINE_PER_CPU(pfp_domain_t, pfp_domains);
 
+pfp_domain_t* pfp_doms[NR_CPUS];
+
 #define local_pfp               (&__get_cpu_var(pfp_domains))
 #define remote_dom(cpu)         (&per_cpu(pfp_domains, cpu).domain)
 #define remote_pfp(cpu) (&per_cpu(pfp_domains, cpu))
@@ -78,12 +80,16 @@ static void pfp_release_jobs(rt_domain_t* rt, struct bheap* tasks)
         while (!bheap_empty(tasks)) {
                 hn = bheap_take(fp_ready_order, tasks);
                 t = bheap2task(hn);
+                TRACE_TASK(t, "released (part:%d prio:%d)\n",
+                           get_partition(t), get_priority(t));
                 fp_prio_add(&pfp->ready_queue, t, priority_index(t));
         }
 
         /* do we need to preempt? */
-        if (fp_higher_prio(fp_prio_peek(&pfp->ready_queue), pfp->scheduled))
+        if (fp_higher_prio(fp_prio_peek(&pfp->ready_queue), pfp->scheduled)) {
+                TRACE_CUR("preempted by new release\n");
                 preempt(pfp);
+        }
 
         raw_spin_unlock_irqrestore(&pfp->slock, flags);
 }
@@ -346,11 +352,15 @@ static void fp_set_prio_inh(pfp_domain_t* pfp, struct task_struct* t,
 {
         int requeue;
 
-        if (!t || t->rt_param.inh_task == prio_inh)
+        if (!t || t->rt_param.inh_task == prio_inh) {
                 /* no update  required */
+                if (t)
+                        TRACE_TASK(t, "no prio-inh update required\n");
                 return;
+        }
 
         requeue = is_queued(t);
+        TRACE_TASK(t, "prio-inh: is_queued:%d\n", requeue);
 
         if (requeue)
                 /* first remove */
@@ -1439,6 +1449,7 @@ static long pfp_activate_plugin(void)
                 per_cpu(mpcpvs_vspin, cpu) = NULL;
 
                 pcp_init_state(&per_cpu(pcp_state, cpu));
+                pfp_doms[cpu] = remote_pfp(cpu);
         }
 
 #endif