Integrate irq mode into PROX (support display and command line)

irq mode can be used to show how a core is interrupted by other tasks.
This mode does not handle packets. It only loops reading tsc.
When the difference between two consecutive calls to rdtsc() is high
then it means the core was interrupted.
This task implementes the display, so that we can see a histogram of
interrupts as well as the maximum, per core.
Command line is also supported, through "show irq buckets" (too show
the intervals of each buckets, in micrcoseconds), and the stats
command line (showing the number of items in each buckets and the max)..

Change-Id: I153cc3deaa7b86ae2776ea44e46ef9ecfd116992
Signed-off-by: Xavier Simonart <xavier.simonart@intel.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/VNFs/DPPD-PROX/stats_irq.h b/VNFs/DPPD-PROX/stats_irq.h
new file mode 100644
index 00000000..71ff80f7
--- /dev/null
+++ b/VNFs/DPPD-PROX/stats_irq.h
@@ -0,0 +1,71 @@
+/*
+// Copyright (c) 2010-2018 Intel Corporation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+*/
+
+#ifndef _STATS_IRQ_H_
+#define _STATS_IRQ_H_
+
+#include <inttypes.h>
+
+#include "clock.h"
+
+#define IRQ_BUCKETS_COUNT      13
+
+extern int last_stat;
+
+// irq_rt_stats is updated real time by handle_irq. It contains total stats, from beginning
+// It cannot be reset to 0, as the reset would be done by another core
+struct irq_rt_stats {
+        uint64_t max_irq;
+	uint64_t irq[IRQ_BUCKETS_COUNT];
+};
+
+// irq_sample is updated by irq_update - as sampling of irq_rt_stats
+// There is usually one sample per second; two samples in total
+struct irq_sample {
+	uint64_t tsc;
+	uint64_t max_irq;
+	uint64_t irq[IRQ_BUCKETS_COUNT];
+};
+
+// Those are the total stats; there can be reset
+// They are obtained by adding samples
+struct irq_task_stats {
+	uint8_t lcore_id;
+	uint8_t task_id;
+	uint64_t max_irq;
+	uint64_t irq[IRQ_BUCKETS_COUNT];
+	struct irq_sample sample[2];
+	struct irq_rt_stats *stats;
+};
+
+uint64_t irq_bucket_maxtime_cycles[IRQ_BUCKETS_COUNT];
+extern uint64_t irq_bucket_maxtime_micro[];
+
+void stats_irq_reset(void);
+void stats_irq_post_proc(void);
+void stats_irq_update(void);
+void stats_irq_init(void);
+int stats_get_n_irq_tasks(void);
+
+struct irq_sample *get_irq_sample(uint32_t task_id, int last);
+struct irq_sample *get_irq_sample_by_core_task(uint32_t lcore_id, uint32_t task_id, int last);
+uint64_t get_max_irq_stats(uint8_t task_id);
+uint64_t get_irq_stats(uint8_t task_id, int bucket_id);
+uint64_t get_max_irq_stats_by_core_task(uint8_t lcore_id, uint8_t task_id);
+uint64_t get_irq_stats_by_core_task(uint8_t lcore_id, uint8_t task_id, int bucket_id);
+void get_irq_buckets_by_core_task(char *buf, uint8_t lcore_id, uint8_t irq_task_id);
+
+#endif /* _STATS_IRQ_H_ */