[dpdk-dev] [PATCH 3/3] examples/power_guest: send request for specified core capabilities
Hajkowski
marcinx.hajkowski at intel.com
Thu May 30 18:15:17 CEST 2019
From: Marcin Hajkowski <marcinx.hajkowski at intel.com>
Send request to power manager for core id provided
by user to get related capabilities.
Signed-off-by: Marcin Hajkowski <marcinx.hajkowski at intel.com>
---
.../guest_cli/vm_power_cli_guest.c | 119 +++++++++++++++++-
1 file changed, 117 insertions(+), 2 deletions(-)
diff --git a/examples/vm_power_manager/guest_cli/vm_power_cli_guest.c b/examples/vm_power_manager/guest_cli/vm_power_cli_guest.c
index 848230248..de85c1406 100644
--- a/examples/vm_power_manager/guest_cli/vm_power_cli_guest.c
+++ b/examples/vm_power_manager/guest_cli/vm_power_cli_guest.c
@@ -132,7 +132,7 @@ struct cmd_freq_list_result {
};
static int
-query_freq_list(struct channel_packet *pkt, unsigned int lcore_id)
+query_data(struct channel_packet *pkt, unsigned int lcore_id)
{
int ret;
ret = rte_power_guest_channel_send_msg(pkt, lcore_id);
@@ -206,7 +206,7 @@ cmd_query_freq_list_parsed(void *parsed_result,
pkt.resource_id = lcore_id;
}
- ret = query_freq_list(&pkt, lcore_id);
+ ret = query_data(&pkt, lcore_id);
if (ret < 0) {
cmdline_printf(cl, "Error during sending frequency list query.\n");
return;
@@ -248,6 +248,120 @@ cmdline_parse_inst_t cmd_query_freq_list = {
},
};
+struct cmd_query_caps_result {
+ cmdline_fixed_string_t query_caps;
+ cmdline_fixed_string_t cpu_num;
+};
+
+static int
+receive_capabilities(struct channel_packet_caps_list *pkt_caps_list,
+ unsigned int lcore_id)
+{
+ int ret;
+
+ ret = rte_power_guest_channel_receive_msg(pkt_caps_list,
+ sizeof(struct channel_packet_caps_list),
+ lcore_id);
+ if (ret < 0) {
+ RTE_LOG(ERR, GUEST_CLI, "Error receiving message.\n");
+ return -1;
+ }
+ if (pkt_caps_list->command != CPU_POWER_CAPS_LIST) {
+ RTE_LOG(ERR, GUEST_CLI, "Unexpected message received.\n");
+ return -1;
+ }
+ return 0;
+}
+
+static void
+cmd_query_caps_list_parsed(void *parsed_result,
+ __rte_unused struct cmdline *cl,
+ __rte_unused void *data)
+{
+ struct cmd_query_caps_result *res = parsed_result;
+ unsigned int lcore_id;
+ struct channel_packet_caps_list pkt_caps_list;
+ struct channel_packet pkt;
+ bool query_list = false;
+ int ret;
+ char *ep;
+
+ memset(&pkt, 0, sizeof(struct channel_packet));
+ memset(&pkt_caps_list, 0, sizeof(struct channel_packet_caps_list));
+
+ if (!strcmp(res->cpu_num, "all")) {
+
+ /* Get first enabled lcore. */
+ lcore_id = rte_get_next_lcore(-1,
+ 0,
+ 0);
+ if (lcore_id == RTE_MAX_LCORE) {
+ cmdline_printf(cl, "Enabled core not found.\n");
+ return;
+ }
+
+ pkt.command = CPU_POWER_QUERY_CAPS_LIST;
+ strcpy(pkt.vm_name, policy.vm_name);
+ query_list = true;
+ } else {
+ errno = 0;
+ lcore_id = (unsigned int)strtol(res->cpu_num, &ep, 10);
+ if (errno != 0 || lcore_id >= MAX_VCPU_PER_VM ||
+ ep == res->cpu_num) {
+ cmdline_printf(cl, "Invalid parameter provided.\n");
+ return;
+ }
+ pkt.command = CPU_POWER_QUERY_CAPS;
+ strcpy(pkt.vm_name, policy.vm_name);
+ pkt.resource_id = lcore_id;
+ }
+
+ ret = query_data(&pkt, lcore_id);
+ if (ret < 0) {
+ cmdline_printf(cl, "Error during sending capabilities query.\n");
+ return;
+ }
+
+ ret = receive_capabilities(&pkt_caps_list, lcore_id);
+ if (ret < 0) {
+ cmdline_printf(cl, "Error during capabilities reception.\n");
+ return;
+ }
+ if (query_list) {
+ unsigned int i;
+ for (i = 0; i < pkt_caps_list.num_vcpu; ++i)
+ cmdline_printf(cl, "Capabilities of [%d] vcore are:"
+ " turbo possibility: %ld, is priority core: %ld.\n",
+ i,
+ pkt_caps_list.turbo[i],
+ pkt_caps_list.priority[i]);
+ } else {
+ cmdline_printf(cl, "Capabilities of [%d] vcore are:"
+ " turbo possibility: %ld, is priority core: %ld.\n",
+ lcore_id,
+ pkt_caps_list.turbo[lcore_id],
+ pkt_caps_list.priority[lcore_id]);
+ }
+}
+
+cmdline_parse_token_string_t cmd_query_caps_token =
+ TOKEN_STRING_INITIALIZER(struct cmd_query_caps_result, query_caps, "query_cpu_caps");
+cmdline_parse_token_string_t cmd_query_caps_cpu_num_token =
+ TOKEN_STRING_INITIALIZER(struct cmd_query_caps_result, cpu_num, NULL);
+
+cmdline_parse_inst_t cmd_query_caps_list = {
+ .f = cmd_query_caps_list_parsed, /* function to call */
+ .data = NULL, /* 2nd arg of func */
+ .help_str = "query_cpu_caps <core_num>|all, request"
+ " information regarding virtual core capabilities."
+ " The keyword 'all' will query list of all vcores for the VM",
+ .tokens = { /* token list, NULL terminated */
+ (void *)&cmd_query_caps_token,
+ (void *)&cmd_query_caps_cpu_num_token,
+ NULL,
+ },
+};
+
static int
check_response_cmd(unsigned int lcore_id, int *result)
{
@@ -407,6 +521,7 @@ cmdline_parse_ctx_t main_ctx[] = {
(cmdline_parse_inst_t *)&cmd_send_policy_set,
(cmdline_parse_inst_t *)&cmd_set_cpu_freq_set,
(cmdline_parse_inst_t *)&cmd_query_freq_list,
+ (cmdline_parse_inst_t *)&cmd_query_caps_list,
NULL,
};
--
2.17.2
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