[PATCH v9 1/5] eal: add lcore info in telemetry

[lihuisong (C)]

在 2023/2/8 3:37, Robin Jarry 写道:
> 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 at redhat.com>
> Acked-by: Morten Brørup <mb at smartsharesystems.com>
> Reviewed-by: Kevin Laatz <kevin.laatz at intel.com>
> ---
>
> Notes:
>      v8 -> v9: Updated with 64 bits integers telemetry functions
>
>   lib/eal/common/eal_common_lcore.c | 123 +++++++++++++++++++++++++-----
>   1 file changed, 105 insertions(+), 18 deletions(-)
>
> diff --git a/lib/eal/common/eal_common_lcore.c b/lib/eal/common/eal_common_lcore.c
> index 06c594b0224f..f53fc17b4d04 100644
> --- a/lib/eal/common/eal_common_lcore.c
> +++ b/lib/eal/common/eal_common_lcore.c
> @@ -10,6 +10,9 @@
>   #include <rte_errno.h>
>   #include <rte_lcore.h>
>   #include <rte_log.h>
> +#ifndef RTE_EXEC_ENV_WINDOWS
> +#include <rte_telemetry.h>
> +#endif
>   
>   #include "eal_private.h"
>   #include "eal_thread.h"
> @@ -419,35 +422,35 @@ rte_lcore_iterate(rte_lcore_iterate_cb cb, void *arg)
>   	return ret;
>   }
>   
> +static const char *
> +lcore_role_str(enum rte_lcore_role_t role)
> +{
> +	switch (role) {
> +	case ROLE_RTE:
> +		return "RTE";
> +	case ROLE_SERVICE:
> +		return "SERVICE";
> +	case ROLE_NON_EAL:
> +		return "NON_EAL";
> +	default:
> +		return "UNKNOWN";
> +	}
> +}
> +
>   static int
>   lcore_dump_cb(unsigned int lcore_id, void *arg)
>   {
>   	struct rte_config *cfg = rte_eal_get_configuration();
>   	char cpuset[RTE_CPU_AFFINITY_STR_LEN];
> -	const char *role;
>   	FILE *f = arg;
>   	int ret;
>   
> -	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;
> -	}
> -
>   	ret = eal_thread_dump_affinity(&lcore_config[lcore_id].cpuset, cpuset,
>   		sizeof(cpuset));
>   	fprintf(f, "lcore %u, socket %u, role %s, cpuset %s%s\n", lcore_id,
> -		rte_lcore_to_socket_id(lcore_id), role, cpuset,
> -		ret == 0 ? "" : "...");
> +		rte_lcore_to_socket_id(lcore_id),
> +		lcore_role_str(cfg->lcore_role[lcore_id]),
> +		cpuset, ret == 0 ? "" : "...");
>   	return 0;
>   }
The above modification doesn't seem to be related to this patch. Suggest 
remove or delete it from this patch.
>   
> @@ -456,3 +459,87 @@ rte_lcore_dump(FILE *f)
>   {
>   	rte_lcore_iterate(lcore_dump_cb, f);
>   }
> +
> +#ifndef RTE_EXEC_ENV_WINDOWS
> +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 rte_config *cfg = rte_eal_get_configuration();
> +	struct lcore_telemetry_info *info = arg;
> +	struct rte_tel_data *cpuset;
> +	unsigned int cpu;
> +
> +	if (info->lcore_id != lcore_id)

Suggest: info->lcore_id != lcore_id -> lcore_id != info->lcore_id
Here, info->lcore_id is a target and lcore_id is the variable to be judged, right?

> +		return 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", lcore_role_str(cfg->lcore_role[lcore_id]));
> +	cpuset = rte_tel_data_alloc();
> +	if (cpuset == NULL)
> +		return -ENOMEM;
> +	rte_tel_data_start_array(cpuset, RTE_TEL_INT_VAL);
> +	for (cpu = 0; cpu < CPU_SETSIZE; cpu++) {
> +		if (CPU_ISSET(cpu, &lcore_config[lcore_id].cpuset))
> +			rte_tel_data_add_array_int(cpuset, cpu);
> +	}
> +	rte_tel_data_add_dict_container(info->d, "cpuset", cpuset, 0);
> +
> +	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 };
> +	unsigned long lcore_id;
> +	char *endptr;
> +
> +	if (params == NULL)
> +		return -EINVAL;
> +	errno = 0;
> +	lcore_id = strtoul(params, &endptr, 10);
> +	if (errno)
> +		return -errno;
> +	if (*params == '\0' || *endptr != '\0' || lcore_id >= RTE_MAX_LCORE)
> +		return -EINVAL;
> +
> +	info.lcore_id = lcore_id;
> +
> +	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");
> +}
> +#endif /* !RTE_EXEC_ENV_WINDOWS */