From: Anatoly Burakov Date: Sat, 31 Mar 2018 17:08:13 +0000 (+0100) Subject: eal: provide API for querying valid socket ids X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=952b20777255d203dafd813b1adfb4b9d6b449d1;p=dpdk.git eal: provide API for querying valid socket ids During lcore scan, find all socket ID's and store them, and provide public API to query valid socket id's. This will break the ABI, so bump ABI version. Also, remove deprecation notice corresponding to this change. Signed-off-by: Anatoly Burakov Acked-by: Gowrishankar Muthukrishnan --- diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst index 0c696f7439..ec70b5fa90 100644 --- a/doc/guides/rel_notes/deprecation.rst +++ b/doc/guides/rel_notes/deprecation.rst @@ -38,9 +38,6 @@ Deprecation Notices success and failure, respectively. This will change to 1 and 0 for true and false, respectively, to make use of the function more intuitive. -* eal: new ``numa_node_count`` member will be added to ``rte_config`` structure - in v18.05. - * eal: due to internal data layout reorganization, there will be changes to several structures and functions as a result of coming changes to support memory hotplug in v18.05. diff --git a/doc/guides/rel_notes/release_18_05.rst b/doc/guides/rel_notes/release_18_05.rst index 04ff4feea5..e5fac1cd1c 100644 --- a/doc/guides/rel_notes/release_18_05.rst +++ b/doc/guides/rel_notes/release_18_05.rst @@ -145,7 +145,7 @@ The libraries prepended with a plus sign were incremented in this version. + librte_common_octeontx.so.1 librte_cryptodev.so.4 librte_distributor.so.1 - librte_eal.so.6 + + librte_eal.so.7 + librte_ethdev.so.9 librte_eventdev.so.3 librte_flow_classify.so.1 diff --git a/lib/librte_eal/bsdapp/eal/Makefile b/lib/librte_eal/bsdapp/eal/Makefile index dd455e671b..ed1d17b442 100644 --- a/lib/librte_eal/bsdapp/eal/Makefile +++ b/lib/librte_eal/bsdapp/eal/Makefile @@ -21,7 +21,7 @@ LDLIBS += -lgcc_s EXPORT_MAP := ../../rte_eal_version.map -LIBABIVER := 6 +LIBABIVER := 7 # specific to bsdapp exec-env SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) := eal.c diff --git a/lib/librte_eal/common/eal_common_lcore.c b/lib/librte_eal/common/eal_common_lcore.c index 7724fa4334..3167e9d796 100644 --- a/lib/librte_eal/common/eal_common_lcore.c +++ b/lib/librte_eal/common/eal_common_lcore.c @@ -7,6 +7,7 @@ #include #include +#include #include #include #include @@ -16,6 +17,19 @@ #include "eal_private.h" #include "eal_thread.h" +static int +socket_id_cmp(const void *a, const void *b) +{ + const int *lcore_id_a = a; + const int *lcore_id_b = b; + + if (*lcore_id_a < *lcore_id_b) + return -1; + if (*lcore_id_a > *lcore_id_b) + return 1; + return 0; +} + /* * Parse /sys/devices/system/cpu to get the number of physical and logical * processors on the machine. The function will fill the cpu_info @@ -28,6 +42,8 @@ rte_eal_cpu_init(void) struct rte_config *config = rte_eal_get_configuration(); unsigned lcore_id; unsigned count = 0; + unsigned int socket_id, prev_socket_id; + int lcore_to_socket_id[RTE_MAX_LCORE]; /* * Parse the maximum set of logical cores, detect the subset of running @@ -39,6 +55,19 @@ rte_eal_cpu_init(void) /* init cpuset for per lcore config */ CPU_ZERO(&lcore_config[lcore_id].cpuset); + /* find socket first */ + socket_id = eal_cpu_socket_id(lcore_id); + if (socket_id >= RTE_MAX_NUMA_NODES) { +#ifdef RTE_EAL_ALLOW_INV_SOCKET_ID + socket_id = 0; +#else + RTE_LOG(ERR, EAL, "Socket ID (%u) is greater than RTE_MAX_NUMA_NODES (%d)\n", + socket_id, RTE_MAX_NUMA_NODES); + return -1; +#endif + } + lcore_to_socket_id[lcore_id] = socket_id; + /* in 1:1 mapping, record related cpu detected state */ lcore_config[lcore_id].detected = eal_cpu_detected(lcore_id); if (lcore_config[lcore_id].detected == 0) { @@ -54,18 +83,7 @@ rte_eal_cpu_init(void) config->lcore_role[lcore_id] = ROLE_RTE; lcore_config[lcore_id].core_role = ROLE_RTE; lcore_config[lcore_id].core_id = eal_cpu_core_id(lcore_id); - lcore_config[lcore_id].socket_id = eal_cpu_socket_id(lcore_id); - if (lcore_config[lcore_id].socket_id >= RTE_MAX_NUMA_NODES) { -#ifdef RTE_EAL_ALLOW_INV_SOCKET_ID - lcore_config[lcore_id].socket_id = 0; -#else - RTE_LOG(ERR, EAL, "Socket ID (%u) is greater than " - "RTE_MAX_NUMA_NODES (%d)\n", - lcore_config[lcore_id].socket_id, - RTE_MAX_NUMA_NODES); - return -1; -#endif - } + lcore_config[lcore_id].socket_id = socket_id; RTE_LOG(DEBUG, EAL, "Detected lcore %u as " "core %u on socket %u\n", lcore_id, lcore_config[lcore_id].core_id, @@ -79,5 +97,38 @@ rte_eal_cpu_init(void) RTE_MAX_LCORE); RTE_LOG(INFO, EAL, "Detected %u lcore(s)\n", config->lcore_count); + /* sort all socket id's in ascending order */ + qsort(lcore_to_socket_id, RTE_DIM(lcore_to_socket_id), + sizeof(lcore_to_socket_id[0]), socket_id_cmp); + + prev_socket_id = -1; + config->numa_node_count = 0; + for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) { + socket_id = lcore_to_socket_id[lcore_id]; + if (socket_id != prev_socket_id) + config->numa_nodes[config->numa_node_count++] = + socket_id; + prev_socket_id = socket_id; + } + RTE_LOG(INFO, EAL, "Detected %u NUMA nodes\n", config->numa_node_count); + return 0; } + +unsigned int __rte_experimental +rte_socket_count(void) +{ + const struct rte_config *config = rte_eal_get_configuration(); + return config->numa_node_count; +} + +int __rte_experimental +rte_socket_id_by_idx(unsigned int idx) +{ + const struct rte_config *config = rte_eal_get_configuration(); + if (idx >= config->numa_node_count) { + rte_errno = EINVAL; + return -1; + } + return config->numa_nodes[idx]; +} diff --git a/lib/librte_eal/common/include/rte_eal.h b/lib/librte_eal/common/include/rte_eal.h index b804ff529c..c698b3155c 100644 --- a/lib/librte_eal/common/include/rte_eal.h +++ b/lib/librte_eal/common/include/rte_eal.h @@ -57,6 +57,8 @@ enum rte_proc_type_t { struct rte_config { uint32_t master_lcore; /**< Id of the master lcore */ uint32_t lcore_count; /**< Number of available logical cores. */ + uint32_t numa_node_count; /**< Number of detected NUMA nodes. */ + uint32_t numa_nodes[RTE_MAX_NUMA_NODES]; /**< List of detected NUMA nodes. */ uint32_t service_lcore_count;/**< Number of available service cores. */ enum rte_lcore_role_t lcore_role[RTE_MAX_LCORE]; /**< State of cores. */ diff --git a/lib/librte_eal/common/include/rte_lcore.h b/lib/librte_eal/common/include/rte_lcore.h index 047222030f..731297574a 100644 --- a/lib/librte_eal/common/include/rte_lcore.h +++ b/lib/librte_eal/common/include/rte_lcore.h @@ -131,6 +131,36 @@ rte_lcore_index(int lcore_id) */ unsigned rte_socket_id(void); +/** + * Return number of physical sockets detected on the system. + * + * Note that number of nodes may not be correspondent to their physical id's: + * for example, a system may report two socket id's, but the actual socket id's + * may be 0 and 8. + * + * @return + * the number of physical sockets as recognized by EAL + */ +unsigned int __rte_experimental +rte_socket_count(void); + +/** + * Return socket id with a particular index. + * + * This will return socket id at a particular position in list of all detected + * physical socket id's. For example, on a machine with sockets [0, 8], passing + * 1 as a parameter will return 8. + * + * @param idx + * index of physical socket id to return + * + * @return + * - physical socket id as recognized by EAL + * - -1 on error, with errno set to EINVAL + */ +int __rte_experimental +rte_socket_id_by_idx(unsigned int idx); + /** * Get the ID of the physical socket of the specified lcore * diff --git a/lib/librte_eal/linuxapp/eal/Makefile b/lib/librte_eal/linuxapp/eal/Makefile index 7e5bbe8898..b9c7727c8e 100644 --- a/lib/librte_eal/linuxapp/eal/Makefile +++ b/lib/librte_eal/linuxapp/eal/Makefile @@ -10,7 +10,7 @@ ARCH_DIR ?= $(RTE_ARCH) EXPORT_MAP := ../../rte_eal_version.map VPATH += $(RTE_SDK)/lib/librte_eal/common/arch/$(ARCH_DIR) -LIBABIVER := 6 +LIBABIVER := 7 VPATH += $(RTE_SDK)/lib/librte_eal/common diff --git a/lib/librte_eal/meson.build b/lib/librte_eal/meson.build index 15d1c6afd3..4aa63e3d0b 100644 --- a/lib/librte_eal/meson.build +++ b/lib/librte_eal/meson.build @@ -21,7 +21,7 @@ else error('unsupported system type @0@'.format(hostmachine.system())) endif -version = 6 # the version of the EAL API +version = 7 # the version of the EAL API allow_experimental_apis = true deps += 'compat' cflags += '-D_GNU_SOURCE' diff --git a/lib/librte_eal/rte_eal_version.map b/lib/librte_eal/rte_eal_version.map index 8299946269..dd38783a2c 100644 --- a/lib/librte_eal/rte_eal_version.map +++ b/lib/librte_eal/rte_eal_version.map @@ -256,5 +256,7 @@ EXPERIMENTAL { rte_service_set_runstate_mapped_check; rte_service_set_stats_enable; rte_service_start_with_defaults; + rte_socket_count; + rte_socket_id_by_idx; } DPDK_18.02;