Signed-off-by: Alex Wang <al...@nicira.com>
---
lib/ovs-numa.c | 18 ++++++++++++++++++
lib/ovs-numa.h | 7 +++++++
2 files changed, 25 insertions(+)
diff --git a/lib/ovs-numa.c b/lib/ovs-numa.c
index 545b075..2de2aa2 100644
--- a/lib/ovs-numa.c
+++ b/lib/ovs-numa.c
@@ -168,6 +168,24 @@ ovs_numa_get_n_cores(void)
: OVS_CORE_UNSPEC;
}
+/* Given 'core_id', returns the corresponding socket id. Returns
+ * OVS_SOCKET_UNSPEC if 'core_id' is invalid. */
+int
+ovs_numa_get_socket_id(int core_id)
+{
+ if (ovs_numa_cpu_core_id_is_valid(core_id)) {
+ struct cpu_core *core;
+
+ core = CONTAINER_OF(hmap_first_with_hash(&all_cpu_cores,
+ hash_int(core_id, 0)),
+ struct cpu_core, hmap_node);
+
+ return core->socket->socket_id;
+ }
+
+ return OVS_SOCKET_UNSPEC;
+}
+
/* Returns the number of cpu cores on socket. Returns OVS_CORE_UNSPEC
* if 'socket_id' is invalid. */
int
diff --git a/lib/ovs-numa.h b/lib/ovs-numa.h
index 95884c5..46d5750 100644
--- a/lib/ovs-numa.h
+++ b/lib/ovs-numa.h
@@ -32,6 +32,7 @@ bool ovs_numa_cpu_socket_id_is_valid(int sid);
bool ovs_numa_cpu_core_id_is_valid(int cid);
int ovs_numa_get_n_sockets(void);
int ovs_numa_get_n_cores(void);
+int ovs_numa_get_socket_id(int core_id);
int ovs_numa_get_n_cores_on_socket(int socket_id);
int ovs_numa_get_n_unpinned_cores_on_socket(int socket_id);
bool ovs_numa_try_pin_core_specific(int core_id);
@@ -72,6 +73,12 @@ ovs_numa_get_n_cores(void)
}
static inline int
+ovs_numa_get_socket_id(int core_id OVS_UNUSED)
+{
+ return OVS_SOCKET_UNSPEC;
+}
+
+static inline int
ovs_numa_get_n_cores_on_socket(int socket_id OVS_UNUSED)
{
return OVS_CORE_UNSPEC;
--
1.7.9.5
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