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, 24 insertions, 1 deletions

diff --git a/VNFs/DPPD-PROX/cmd_parser.c b/VNFs/DPPD-PROX/cmd_parser.c
index 18a4f5fc..09ea9653 100644
--- a/VNFs/DPPD-PROX/cmd_parser.c
+++ b/VNFs/DPPD-PROX/cmd_parser.c
@@ -1664,6 +1664,28 @@ static int parse_cmd_lat_stats(const char *str, struct input *input)
 	return 0;
 }
 
+static int parse_cmd_show_irq_buckets(const char *str, struct input *input)
+{
+	char buf[4096] = {0};
+	unsigned int i, c;
+	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;
+
+	if (parse_core_task(str, lcores, &task_id, &nb_cores))
+		return -1;
+
+	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
+		for (c = 0; c < nb_cores; c++) {
+			lcore_id = lcores[c];
+			get_irq_buckets_by_core_task(buf, lcore_id, task_id);
+			plog_info("%s", buf);
+			if (input->reply)
+				input->reply(input, buf, strlen(buf));
+			buf[0] = 0;
+		}
+	}
+	return 0;
+}
+
 static int parse_cmd_irq(const char *str, struct input *input)
 {
 	unsigned int i, c;
@@ -1906,6 +1928,7 @@ static struct cmd_str cmd_strings[] = {
 	{"tot imissed tot", "", "Print total number of imissed since reset", parse_cmd_tot_imissed_tot},
 	{"lat stats", "<core id> <task id>", "Print min,max,avg latency as measured during last sampling interval", parse_cmd_lat_stats},
 	{"irq stats", "<core id> <task id>", "Print irq related infos", parse_cmd_irq},
+	{"show irq buckets", "<core id> <task id>", "Print irq buckets", parse_cmd_show_irq_buckets},
 	{"lat packets", "<core id> <task id>", "Print the latency for each of the last set of packets", parse_cmd_lat_packets},
 	{"accuracy limit", "<core id> <task id> <nsec>", "Only consider latency of packets that were measured with an error no more than <nsec>", parse_cmd_accuracy},
 	{"core stats", "<core id> <task id>", "Print rx/tx/drop for task <task id> running on core <core id>", parse_cmd_core_stats},
@@ -1928,7 +1951,7 @@ static struct cmd_str cmd_strings[] = {
 	{"port down", "<port id>", "Set the port down", parse_cmd_port_down},
 	{"port link state", "<port id>", "Get link state (up or down) for port", parse_cmd_port_link_state},
 	{"port xstats", "<port id>", "Get extra statistics for the port", parse_cmd_xstats},
-	{"stats", "<stats_path>", "Get stats as sepcified by <stats_path>. A comma-separated list of <stats_path> can be supplied", parse_cmd_stats},
+	{"stats", "<stats_path>", "Get stats as specified by <stats_path>. A comma-separated list of <stats_path> can be supplied", parse_cmd_stats},
 	{"cgnat dump public hash", "<core id> <task id>", "Dump cgnat public hash table", parse_cmd_cgnat_public_hash},
 	{"cgnat dump private hash", "<core id> <task id>", "Dump cgnat private hash table", parse_cmd_cgnat_private_hash},
 	{"delay_us", "<core_id> <task_id> <delay_us>", "Set the delay in usec for the impair mode to <delay_us>", parse_cmd_delay_us},