From 77bca1aeb7d72936742740951c7f0f1f8d8760e2 Mon Sep 17 00:00:00 2001
From: Stefan Moll <stefan@stefaus.de>
Date: Tue, 27 Sep 2022 15:45:55 +0200
Subject: [PATCH] cleanup proc fs output method
---
kernel/sched/pb.c | 30 +++++-------------------------
1 file changed, 5 insertions(+), 25 deletions(-)
diff --git a/kernel/sched/pb.c b/kernel/sched/pb.c
index 3fae16b3ec4f..01c30585430b 100644
--- a/kernel/sched/pb.c
+++ b/kernel/sched/pb.c
@@ -144,7 +144,7 @@ void init_pb_rq(struct pb_rq *pb_rq)
pb_rq->n_admin_cycles = 20;
pb_rq->count_admin_cycles = 0;
pb_rq->mode = PB_DISABLED_MODE;
- pb_rq->c_entry = -1;
+ pb_rq->c_entry = 0;
pb_rq->size = 0;
pb_rq->pevent = NULL;
pb_rq->is_initialized = 0;
@@ -375,12 +375,10 @@ const struct sched_class pb_sched_class = {
EXPORT_SYMBOL(pb_sched_class);
-///////////////////// ProcFS Ausgabe ///////////////////////////////////
-static struct plan_entry dummy_plan = {
- .n_instr = 20000,
- .task_id = 0xCAFE,
- .task_struct = NULL,
-};
+/***********************************************************************
+ * /proc filesystem entry
+ * use 'cat /proc/pbsched' to read
+ **********************************************************************/
static int show_pbsched(struct seq_file *seq, void *v)
{
@@ -393,12 +391,6 @@ static int show_pbsched(struct seq_file *seq, void *v)
struct rq *rq;
struct pb_rq *pb;
- // perf event stuff here is for testing and will be deleted in the future
- struct perf_event *event;
- int perf_init_res;
- u64 perf_counter;
- u64 read_error;
-
int i;
struct plan_entry *plan;
@@ -406,8 +398,6 @@ static int show_pbsched(struct seq_file *seq, void *v)
rq = cpu_rq(cpu);
pb = &(rq->pb);
- perf_init_res = init_perf_event(&dummy_plan, &event);
-
switch(pb->mode) {
case PB_DISABLED_MODE: mode='D'; break;
case PB_EXEC_MODE: mode='E'; break;
@@ -415,16 +405,6 @@ static int show_pbsched(struct seq_file *seq, void *v)
default: mode='U'; break;
}
- read_error = get_perf_counter(event, &perf_counter);
-
- printk(KERN_WARNING "get_perf_counter: %llu\n", perf_counter);
-
- terminate_perf_event(event);
-
- if (read_error) {
- printk(KERN_WARNING "Hi! FETCHING PERFORMANCE COUNTER IN PB SCHEDULER FAILED WITH %llu\n", read_error);
- }
-
/* runqueue-specific stats */
seq_printf(seq,
"cpu%d %c %u %llu %llu\n",
--
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