From mboxrd@z Thu Jan 1 00:00:00 1970 From: Cunming Liang Subject: [PATCH v1 03/15] eal: add support parsing socket_id from cpuset Date: Thu, 22 Jan 2015 16:16:26 +0800 Message-ID: <1421914598-2747-4-git-send-email-cunming.liang@intel.com> References: <1417589628-43666-1-git-send-email-cunming.liang@intel.com> <1421914598-2747-1-git-send-email-cunming.liang@intel.com> To: dev-VfR2kkLFssw@public.gmane.org Return-path: In-Reply-To: <1421914598-2747-1-git-send-email-cunming.liang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces-VfR2kkLFssw@public.gmane.org Sender: "dev" It returns the socket_id if all cpus in the cpuset belongs to the same NUMA node, otherwise it will return SOCKET_ID_ANY. Signed-off-by: Cunming Liang --- lib/librte_eal/bsdapp/eal/eal_lcore.c | 7 +++++ lib/librte_eal/common/eal_thread.h | 52 +++++++++++++++++++++++++++++++++ lib/librte_eal/linuxapp/eal/eal_lcore.c | 7 +++++ 3 files changed, 66 insertions(+) diff --git a/lib/librte_eal/bsdapp/eal/eal_lcore.c b/lib/librte_eal/bsdapp/eal/eal_lcore.c index 72f8ac2..162fb4f 100644 --- a/lib/librte_eal/bsdapp/eal/eal_lcore.c +++ b/lib/librte_eal/bsdapp/eal/eal_lcore.c @@ -41,6 +41,7 @@ #include #include "eal_private.h" +#include "eal_thread.h" /* No topology information available on FreeBSD including NUMA info */ #define cpu_core_id(X) 0 @@ -112,3 +113,9 @@ rte_eal_cpu_init(void) return 0; } + +unsigned +eal_cpu_socket_id(__rte_unused unsigned cpu_id) +{ + return cpu_socket_id(cpu_id); +} diff --git a/lib/librte_eal/common/eal_thread.h b/lib/librte_eal/common/eal_thread.h index b53b84d..a25ee86 100644 --- a/lib/librte_eal/common/eal_thread.h +++ b/lib/librte_eal/common/eal_thread.h @@ -34,6 +34,10 @@ #ifndef EAL_THREAD_H #define EAL_THREAD_H +#include + +#include + /** * basic loop of thread, called for each thread by eal_init(). * @@ -50,4 +54,52 @@ __attribute__((noreturn)) void *eal_thread_loop(void *arg); */ void eal_thread_init_master(unsigned lcore_id); +/** + * Get the NUMA socket id from cpu id. + * This function is private to EAL. + * + * @param cpu_id + * The logical process id. + * @return + * socket_id or SOCKET_ID_ANY + */ +unsigned eal_cpu_socket_id(unsigned cpu_id); + +/** + * Get the NUMA socket id from cpuset. + * This function is private to EAL. + * + * @param cpusetp + * The point to a valid cpu set. + * @return + * socket_id or SOCKET_ID_ANY + */ +static inline int +eal_cpuset_socket_id(rte_cpuset_t *cpusetp) +{ + unsigned cpu = 0; + int socket_id = SOCKET_ID_ANY; + int sid; + + if (cpusetp == NULL) + return SOCKET_ID_ANY; + + do { + if (!CPU_ISSET(cpu, cpusetp)) + continue; + + if (socket_id == SOCKET_ID_ANY) + socket_id = eal_cpu_socket_id(cpu); + + sid = eal_cpu_socket_id(cpu); + if (socket_id != sid) { + socket_id = SOCKET_ID_ANY; + break; + } + + } while (++cpu < RTE_MAX_LCORE); + + return socket_id; +} + #endif /* EAL_THREAD_H */ diff --git a/lib/librte_eal/linuxapp/eal/eal_lcore.c b/lib/librte_eal/linuxapp/eal/eal_lcore.c index 29615f8..922af6d 100644 --- a/lib/librte_eal/linuxapp/eal/eal_lcore.c +++ b/lib/librte_eal/linuxapp/eal/eal_lcore.c @@ -45,6 +45,7 @@ #include "eal_private.h" #include "eal_filesystem.h" +#include "eal_thread.h" #define SYS_CPU_DIR "/sys/devices/system/cpu/cpu%u" #define CORE_ID_FILE "topology/core_id" @@ -197,3 +198,9 @@ rte_eal_cpu_init(void) return 0; } + +unsigned +eal_cpu_socket_id(unsigned cpu_id) +{ + return cpu_socket_id(cpu_id); +} -- 1.8.1.4