eal: get socket id from cpu id

It defines eal_cpu_socket_id() which exposing the origin private cpu_socket_id().
The function is only used inside EAL. It returns socket_id of the specified cpu_id.

Signed-off-by: Cunming Liang <cunming.liang@intel.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

diff --git a/lib/librte_eal/bsdapp/eal/eal_lcore.c b/lib/librte_eal/bsdapp/eal/eal_lcore.c
index 72f8ac2..162fb4f 100644 (file)
--- a/lib/librte_eal/bsdapp/eal/eal_lcore.c
+++ b/lib/librte_eal/bsdapp/eal/eal_lcore.c
@@ -41,6 +41,7 @@
 #include <rte_debug.h>
 
 #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..f1ce0bd 100644 (file)
--- a/lib/librte_eal/common/eal_thread.h
+++ b/lib/librte_eal/common/eal_thread.h
@@ -50,4 +50,15 @@ __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);
+
 #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..ef8c433 100644 (file)
--- 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"
@@ -71,8 +72,8 @@ cpu_detected(unsigned lcore_id)
  * Note: physical package id != NUMA node, but we use it as a
  * fallback for kernels which don't create a nodeY link
  */
-static unsigned
-cpu_socket_id(unsigned lcore_id)
+unsigned
+eal_cpu_socket_id(unsigned lcore_id)
 {
        const char node_prefix[] = "node";
        const size_t prefix_len = sizeof(node_prefix) - 1;
@@ -174,7 +175,7 @@ rte_eal_cpu_init(void)
                /* By default, each detected core is enabled */
                config->lcore_role[lcore_id] = ROLE_RTE;
                lcore_config[lcore_id].core_id = cpu_core_id(lcore_id);
-               lcore_config[lcore_id].socket_id = cpu_socket_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;