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From: Kevin Laatz <kevin.laatz@intel.com>
To: dev@dpdk.org
Cc: anatoly.burakov@intel.com
Subject: [PATCH v2 2/3] eal: add cpuset lcore telemetry entries
Date: Wed, 24 Aug 2022 17:24:41 +0100
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From: Anatoly Burakov <anatoly.burakov@intel.com>
Expose per-lcore cpuset information to telemetry.
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
lib/eal/common/eal_common_lcore_telemetry.c | 47 +++++++++++++++++++++
1 file changed, 47 insertions(+)
diff --git a/lib/eal/common/eal_common_lcore_telemetry.c b/lib/eal/common/eal_common_lcore_telemetry.c
index e6b58788c8..646b0fbb55 100644
--- a/lib/eal/common/eal_common_lcore_telemetry.c
+++ b/lib/eal/common/eal_common_lcore_telemetry.c
@@ -19,6 +19,8 @@ int __rte_lcore_telemetry_enabled;
#ifdef RTE_LCORE_POLL_BUSYNESS
+#include "eal_private.h"
+
struct lcore_telemetry {
int busyness;
/**< Calculated busyness (gets set/returned by the API) */
@@ -254,6 +256,48 @@ lcore_handle_poll_busyness(const char *cmd __rte_unused,
return 0;
}
+static int
+lcore_handle_cpuset(const char *cmd __rte_unused,
+ const char *params __rte_unused,
+ struct rte_tel_data *d)
+{
+ char corenum[64];
+ int i;
+
+ rte_tel_data_start_dict(d);
+
+ RTE_LCORE_FOREACH(i) {
+ const struct lcore_config *cfg = &lcore_config[i];
+ const rte_cpuset_t *cpuset = &cfg->cpuset;
+ struct rte_tel_data *ld;
+ unsigned int cpu;
+
+ if (!rte_lcore_is_enabled(i))
+ continue;
+
+ /* create an array of integers */
+ ld = rte_tel_data_alloc();
+ if (ld == NULL)
+ return -ENOMEM;
+ rte_tel_data_start_array(ld, RTE_TEL_INT_VAL);
+
+ /* add cpu ID's from cpuset to the array */
+ for (cpu = 0; cpu < CPU_SETSIZE; cpu++) {
+ if (!CPU_ISSET(cpu, cpuset))
+ continue;
+ rte_tel_data_add_array_int(ld, cpu);
+ }
+
+ /* add array to the per-lcore container */
+ snprintf(corenum, sizeof(corenum), "%d", i);
+
+ /* tell telemetry library to free this array automatically */
+ rte_tel_data_add_dict_container(d, corenum, ld, 0);
+ }
+
+ return 0;
+}
+
RTE_INIT(lcore_init_telemetry)
{
__rte_lcore_telemetry_enabled = true;
@@ -268,6 +312,9 @@ RTE_INIT(lcore_init_telemetry)
rte_telemetry_register_cmd("/eal/lcore/busyness_disable", lcore_poll_busyness_disable,
"disable lcore poll busyness measurement");
+
+ rte_telemetry_register_cmd("/eal/lcore/cpuset", lcore_handle_cpuset,
+ "list physical core affinity for each lcore");
}
#else
--
2.31.1