From: Ciara Power Date: Sat, 27 Oct 2018 09:17:41 +0000 (+0100) Subject: telemetry: introduce infrastructure X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=8877ac688b52;p=dpdk.git telemetry: introduce infrastructure This patch adds the infrastructure and initial code for the telemetry library. The telemetry init is registered with eal_init(). We can then check to see if --telemetry was passed as an eal option. If --telemetry was parsed, then we call telemetry init at the end of eal init. Control threads are used to get CPU cycles for telemetry, which are configured in this patch also. Signed-off-by: Ciara Power Signed-off-by: Brian Archbold Signed-off-by: Kevin Laatz Signed-off-by: Radu Nicolau Acked-by: Harry van Haaren --- diff --git a/MAINTAINERS b/MAINTAINERS index 17ee5b9d32..58956a318b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1201,6 +1201,10 @@ Latency statistics M: Reshma Pattan F: lib/librte_latencystats/ +Telemetry - EXPERIMENTAL +M: Kevin Laatz +F: lib/librte_telemetry/ + BPF - EXPERIMENTAL M: Konstantin Ananyev F: lib/librte_bpf/ diff --git a/config/common_base b/config/common_base index b68278b47b..d12ae98bc0 100644 --- a/config/common_base +++ b/config/common_base @@ -787,6 +787,11 @@ CONFIG_RTE_LIBRTE_BITRATE=y # CONFIG_RTE_LIBRTE_LATENCY_STATS=y +# +# Compile librte_telemetry +# +CONFIG_RTE_LIBRTE_TELEMETRY=n + # # Compile librte_lpm # diff --git a/doc/api/doxy-api-index.md b/doc/api/doxy-api-index.md index a3039d1686..e27874c5ae 100644 --- a/doc/api/doxy-api-index.md +++ b/doc/api/doxy-api-index.md @@ -155,6 +155,7 @@ The public API headers are grouped by topics: - **debug**: [jobstats] (@ref rte_jobstats.h), + [telemetry] (@ref rte_telemetry.h), [pdump] (@ref rte_pdump.h), [hexdump] (@ref rte_hexdump.h), [debug] (@ref rte_debug.h), diff --git a/doc/api/doxy-api.conf.in b/doc/api/doxy-api.conf.in index 3b652ac9c3..77ba327a88 100644 --- a/doc/api/doxy-api.conf.in +++ b/doc/api/doxy-api.conf.in @@ -56,6 +56,7 @@ INPUT = @TOPDIR@/doc/api/doxy-api-index.md \ @TOPDIR@/lib/librte_sched \ @TOPDIR@/lib/librte_security \ @TOPDIR@/lib/librte_table \ + @TOPDIR@/lib/librte_telemetry \ @TOPDIR@/lib/librte_timer \ @TOPDIR@/lib/librte_vhost INPUT += @API_EXAMPLES@ diff --git a/lib/Makefile b/lib/Makefile index 062cbdfd70..b7370ef97b 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -106,6 +106,8 @@ DEPDIRS-librte_gso := librte_eal librte_mbuf librte_ethdev librte_net DEPDIRS-librte_gso += librte_mempool DIRS-$(CONFIG_RTE_LIBRTE_BPF) += librte_bpf DEPDIRS-librte_bpf := librte_eal librte_mempool librte_mbuf librte_ethdev +DIRS-$(CONFIG_RTE_LIBRTE_TELEMETRY) += librte_telemetry +DEPDIRS-librte_telemetry := librte_eal librte_metrics librte_ethdev ifeq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y) DIRS-$(CONFIG_RTE_LIBRTE_KNI) += librte_kni diff --git a/lib/librte_telemetry/Makefile b/lib/librte_telemetry/Makefile new file mode 100644 index 0000000000..a2d4ff166d --- /dev/null +++ b/lib/librte_telemetry/Makefile @@ -0,0 +1,27 @@ +# SPDX-License-Identifier: BSD-3-Clause +# Copyright(c) 2018 Intel Corporation + +include $(RTE_SDK)/mk/rte.vars.mk + +# library name +LIB = librte_telemetry.a + +CFLAGS += -O3 +CFLAGS += -I$(SRCDIR) +CFLAGS += -DALLOW_EXPERIMENTAL_API + +LDLIBS += -lrte_eal -lrte_ethdev +LDLIBS += -lrte_metrics +LDLIBS += -lpthread + +EXPORT_MAP := rte_telemetry_version.map + +LIBABIVER := 1 + +# library source files +SRCS-$(CONFIG_RTE_LIBRTE_TELEMETRY) := rte_telemetry.c + +# export include files +SYMLINK-$(CONFIG_RTE_LIBRTE_TELEMETRY)-include := rte_telemetry.h + +include $(RTE_SDK)/mk/rte.lib.mk diff --git a/lib/librte_telemetry/meson.build b/lib/librte_telemetry/meson.build new file mode 100644 index 0000000000..7716076a9f --- /dev/null +++ b/lib/librte_telemetry/meson.build @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: BSD-3-Clause +# Copyright(c) 2018 Intel Corporation + +sources = files('rte_telemetry.c') +headers = files('rte_telemetry.h', 'rte_telemetry_internal.h') +deps += ['metrics', 'ethdev'] +cflags += '-DALLOW_EXPERIMENTAL_API' diff --git a/lib/librte_telemetry/rte_telemetry.c b/lib/librte_telemetry/rte_telemetry.c new file mode 100644 index 0000000000..88c4264c4a --- /dev/null +++ b/lib/librte_telemetry/rte_telemetry.c @@ -0,0 +1,121 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 Intel Corporation + */ + +#include +#include + +#include +#include +#include +#include + +#include "rte_telemetry.h" +#include "rte_telemetry_internal.h" + +#define SLEEP_TIME 10 + +static telemetry_impl *static_telemetry; + +static int32_t +rte_telemetry_run(void *userdata) +{ + struct telemetry_impl *telemetry = userdata; + + if (telemetry == NULL) { + TELEMETRY_LOG_WARN("TELEMETRY could not be initialised"); + return -1; + } + + return 0; +} + +static void +*rte_telemetry_run_thread_func(void *userdata) +{ + int ret; + struct telemetry_impl *telemetry = userdata; + + if (telemetry == NULL) { + TELEMETRY_LOG_ERR("%s passed a NULL instance", __func__); + pthread_exit(0); + } + + while (telemetry->thread_status) { + rte_telemetry_run(telemetry); + ret = usleep(SLEEP_TIME); + if (ret < 0) + TELEMETRY_LOG_ERR("Calling thread could not be put to sleep"); + } + pthread_exit(0); +} + +int32_t __rte_experimental +rte_telemetry_init() +{ + int ret; + pthread_attr_t attr; + const char *telemetry_ctrl_thread = "telemetry"; + + if (static_telemetry) { + TELEMETRY_LOG_WARN("TELEMETRY structure already initialised"); + return -EALREADY; + } + + static_telemetry = calloc(1, sizeof(struct telemetry_impl)); + if (static_telemetry == NULL) { + TELEMETRY_LOG_ERR("Memory could not be allocated"); + return -ENOMEM; + } + + static_telemetry->socket_id = rte_socket_id(); + rte_metrics_init(static_telemetry->socket_id); + + ret = pthread_attr_init(&attr); + if (ret != 0) { + TELEMETRY_LOG_ERR("Pthread attribute init failed"); + return -EPERM; + } + + ret = rte_ctrl_thread_create(&static_telemetry->thread_id, + telemetry_ctrl_thread, &attr, rte_telemetry_run_thread_func, + (void *)static_telemetry); + static_telemetry->thread_status = 1; + + if (ret < 0) { + ret = rte_telemetry_cleanup(); + if (ret < 0) + TELEMETRY_LOG_ERR("TELEMETRY cleanup failed"); + return -EPERM; + } + + return 0; +} + +int32_t __rte_experimental +rte_telemetry_cleanup(void) +{ + struct telemetry_impl *telemetry = static_telemetry; + telemetry->thread_status = 0; + pthread_join(telemetry->thread_id, NULL); + free(telemetry); + static_telemetry = NULL; + return 0; +} + +int telemetry_log_level; + +static struct rte_option option = { + .opt_str = "--telemetry", + .cb = &rte_telemetry_init, + .enabled = 0 +}; + +RTE_INIT(rte_telemetry_register) +{ + telemetry_log_level = rte_log_register("lib.telemetry"); + if (telemetry_log_level >= 0) + rte_log_set_level(telemetry_log_level, RTE_LOG_ERR); + + rte_option_register(&option); +} diff --git a/lib/librte_telemetry/rte_telemetry.h b/lib/librte_telemetry/rte_telemetry.h new file mode 100644 index 0000000000..97674ae2dc --- /dev/null +++ b/lib/librte_telemetry/rte_telemetry.h @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 Intel Corporation + */ + +#include + +#ifndef _RTE_TELEMETRY_H_ +#define _RTE_TELEMETRY_H_ + +/** + * @file + * RTE Telemetry + * + * The telemetry library provides a method to retrieve statistics from + * DPDK by sending a JSON encoded message over a socket. DPDK will send + * a JSON encoded response containing telemetry data. + ***/ + +/** + * @warning + * @b EXPERIMENTAL: this API may change without prior notice + * + * Initialize Telemetry + * + * @return + * 0 on successful initialisation. + * @return + * -ENOMEM on memory allocation error + * @return + * -EPERM on unknown error failure + * @return + * -EALREADY if Telemetry is already initialised. + */ +int32_t __rte_experimental +rte_telemetry_init(void); + +/** + * @warning + * @b EXPERIMENTAL: this API may change without prior notice + * + * Clean up and free memory. + * + * @return + * 0 on success + * @return + * -EPERM on failure + */ +int32_t __rte_experimental +rte_telemetry_cleanup(void); + +#endif diff --git a/lib/librte_telemetry/rte_telemetry_internal.h b/lib/librte_telemetry/rte_telemetry_internal.h new file mode 100644 index 0000000000..4e810a84c8 --- /dev/null +++ b/lib/librte_telemetry/rte_telemetry_internal.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 Intel Corporation + */ + +#include + +#ifndef _RTE_TELEMETRY_INTERNAL_H_ +#define _RTE_TELEMETRY_INTERNAL_H_ + +/* Logging Macros */ +extern int telemetry_log_level; + +#define TELEMETRY_LOG(level, fmt, args...) \ + rte_log(RTE_LOG_ ##level, telemetry_log_level, "%s(): "fmt "\n", \ + __func__, ##args) + +#define TELEMETRY_LOG_ERR(fmt, args...) \ + TELEMETRY_LOG(ERR, fmt, ## args) + +#define TELEMETRY_LOG_WARN(fmt, args...) \ + TELEMETRY_LOG(WARNING, fmt, ## args) + +#define TELEMETRY_LOG_INFO(fmt, args...) \ + TELEMETRY_LOG(INFO, fmt, ## args) + +typedef struct telemetry_impl { + pthread_t thread_id; + int thread_status; + uint32_t socket_id; +} telemetry_impl; + +#endif diff --git a/lib/librte_telemetry/rte_telemetry_version.map b/lib/librte_telemetry/rte_telemetry_version.map new file mode 100644 index 0000000000..bbcd9a7968 --- /dev/null +++ b/lib/librte_telemetry/rte_telemetry_version.map @@ -0,0 +1,8 @@ +EXPERIMENTAL { + global: + + rte_telemetry_cleanup; + rte_telemetry_init; + + local: *; +}; diff --git a/lib/meson.build b/lib/meson.build index 2b903fa37c..9d1f353d29 100644 --- a/lib/meson.build +++ b/lib/meson.build @@ -25,7 +25,7 @@ libraries = [ 'compat', # just a header, used for versioning # add pkt framework libs which use other libs from above 'port', 'table', 'pipeline', # flow_classify lib depends on pkt framework table lib - 'flow_classify', 'bpf'] + 'flow_classify', 'bpf', 'telemetry'] default_cflags = machine_args if cc.has_argument('-Wno-format-truncation') diff --git a/mk/rte.app.mk b/mk/rte.app.mk index c0036daf84..39969f46a3 100644 --- a/mk/rte.app.mk +++ b/mk/rte.app.mk @@ -50,6 +50,9 @@ _LDLIBS-$(CONFIG_RTE_LIBRTE_LPM) += -lrte_lpm _LDLIBS-$(CONFIG_RTE_LIBRTE_ACL) += --whole-archive _LDLIBS-$(CONFIG_RTE_LIBRTE_ACL) += -lrte_acl _LDLIBS-$(CONFIG_RTE_LIBRTE_ACL) += --no-whole-archive +_LDLIBS-$(CONFIG_RTE_LIBRTE_TELEMETRY) += --whole-archive +_LDLIBS-$(CONFIG_RTE_LIBRTE_TELEMETRY) += -lrte_telemetry +_LDLIBS-$(CONFIG_RTE_LIBRTE_TELEMETRY) += --no-whole-archive _LDLIBS-$(CONFIG_RTE_LIBRTE_JOBSTATS) += -lrte_jobstats _LDLIBS-$(CONFIG_RTE_LIBRTE_METRICS) += -lrte_metrics _LDLIBS-$(CONFIG_RTE_LIBRTE_BITRATE) += -lrte_bitratestats