[RFC,1/4] eal: add lcore info in telemetry
Checks
Commit Message
Report the same information than rte_lcore_dump() in the telemetry
API into /eal/lcore/list and /eal/lcore/info,ID.
Example:
--> /eal/lcore/info,3
{
"/eal/lcore/info": {
"lcore_id": 3,
"socket": 0,
"role": "RTE",
"cpuset": "3"
}
}
Signed-off-by: Robin Jarry <rjarry@redhat.com>
---
lib/eal/common/eal_common_lcore.c | 90 +++++++++++++++++++++++++++++++
1 file changed, 90 insertions(+)
@@ -10,6 +10,7 @@
#include <rte_errno.h>
#include <rte_lcore.h>
#include <rte_log.h>
+#include <rte_telemetry.h>
#include "eal_private.h"
#include "eal_thread.h"
@@ -456,3 +457,92 @@ rte_lcore_dump(FILE *f)
{
rte_lcore_iterate(lcore_dump_cb, f);
}
+
+static int
+lcore_telemetry_id_cb(unsigned int lcore_id, void *arg)
+{
+ struct rte_tel_data *d = arg;
+ return rte_tel_data_add_array_int(d, lcore_id);
+}
+
+static int
+handle_lcore_list(const char *cmd __rte_unused,
+ const char *params __rte_unused,
+ struct rte_tel_data *d)
+{
+ int ret = rte_tel_data_start_array(d, RTE_TEL_INT_VAL);
+ if (ret)
+ return ret;
+ return rte_lcore_iterate(lcore_telemetry_id_cb, d);
+}
+
+struct lcore_telemetry_info {
+ unsigned int lcore_id;
+ struct rte_tel_data *d;
+};
+
+static int
+lcore_telemetry_info_cb(unsigned int lcore_id, void *arg)
+{
+ struct lcore_telemetry_info *info = arg;
+ struct rte_config *cfg = rte_eal_get_configuration();
+ char cpuset[RTE_CPU_AFFINITY_STR_LEN + 3];
+ const char *role;
+
+ if (info->lcore_id != lcore_id)
+ return 0;
+
+ switch (cfg->lcore_role[lcore_id]) {
+ case ROLE_RTE:
+ role = "RTE";
+ break;
+ case ROLE_SERVICE:
+ role = "SERVICE";
+ break;
+ case ROLE_NON_EAL:
+ role = "NON_EAL";
+ break;
+ default:
+ role = "UNKNOWN";
+ break;
+ }
+ if (eal_thread_dump_affinity(&lcore_config[lcore_id].cpuset, cpuset, sizeof(cpuset) - 3)) {
+ cpuset[sizeof(cpuset) - 4] = '.';
+ cpuset[sizeof(cpuset) - 3] = '.';
+ cpuset[sizeof(cpuset) - 2] = '.';
+ cpuset[sizeof(cpuset) - 1] = '\0';
+ }
+ rte_tel_data_start_dict(info->d);
+ rte_tel_data_add_dict_int(info->d, "lcore_id", lcore_id);
+ rte_tel_data_add_dict_int(info->d, "socket", rte_lcore_to_socket_id(lcore_id));
+ rte_tel_data_add_dict_string(info->d, "role", role);
+ rte_tel_data_add_dict_string(info->d, "cpuset", cpuset);
+
+ return 0;
+}
+
+static int
+handle_lcore_info(const char *cmd __rte_unused, const char *params, struct rte_tel_data *d)
+{
+ struct lcore_telemetry_info info = { .d = d };
+ char *endptr = NULL;
+ if (params == NULL || strlen(params) == 0)
+ return -EINVAL;
+ errno = 0;
+ info.lcore_id = strtoul(params, &endptr, 10);
+ if (errno)
+ return -errno;
+ if (endptr == params)
+ return -EINVAL;
+ return rte_lcore_iterate(lcore_telemetry_info_cb, &info);
+}
+
+RTE_INIT(lcore_telemetry)
+{
+ rte_telemetry_register_cmd(
+ "/eal/lcore/list", handle_lcore_list,
+ "List of lcore ids. Takes no parameters");
+ rte_telemetry_register_cmd(
+ "/eal/lcore/info", handle_lcore_info,
+ "Returns lcore info. Parameters: int lcore_id");
+}