[PATCH v2 04/15] eal: new TLS definition and API declaration

[Cunming Liang <cunming.liang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>]

1. add two TLS *_socket_id* and *_cpuset*
2. add two external API rte_thread_set/get_affinity
3. add one internal API eal_thread_dump_affinity

Signed-off-by: Cunming Liang <cunming.liang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
 lib/librte_eal/bsdapp/eal/eal_thread.c    |  2 ++
 lib/librte_eal/common/eal_thread.h        | 14 ++++++++++++++
 lib/librte_eal/common/include/rte_lcore.h | 29 +++++++++++++++++++++++++++--
 lib/librte_eal/linuxapp/eal/eal_thread.c  |  2 ++
 4 files changed, 45 insertions(+), 2 deletions(-)

diff --git a/lib/librte_eal/bsdapp/eal/eal_thread.c b/lib/librte_eal/bsdapp/eal/eal_thread.c
index ab05368..10220c7 100644
--- a/lib/librte_eal/bsdapp/eal/eal_thread.c
+++ b/lib/librte_eal/bsdapp/eal/eal_thread.c
@@ -56,6 +56,8 @@
 #include "eal_thread.h"
 
 RTE_DEFINE_PER_LCORE(unsigned, _lcore_id);
+RTE_DEFINE_PER_LCORE(unsigned, _socket_id);
+RTE_DEFINE_PER_LCORE(rte_cpuset_t, _cpuset);
 
 /*
  * Send a message to a slave lcore identified by slave_id to call a
diff --git a/lib/librte_eal/common/eal_thread.h b/lib/librte_eal/common/eal_thread.h
index a25ee86..28edf51 100644
--- a/lib/librte_eal/common/eal_thread.h
+++ b/lib/librte_eal/common/eal_thread.h
@@ -102,4 +102,18 @@ eal_cpuset_socket_id(rte_cpuset_t *cpusetp)
 	return socket_id;
 }
 
+/**
+ * Dump the current pthread cpuset.
+ * This function is private to EAL.
+ *
+ * @param str
+ *   The string buffer the cpuset will dump to.
+ * @param size
+ *   The string buffer size.
+ */
+#define CPU_STR_LEN            256
+void
+eal_thread_dump_affinity(char str[], unsigned size);
+
+
 #endif /* EAL_THREAD_H */
diff --git a/lib/librte_eal/common/include/rte_lcore.h b/lib/librte_eal/common/include/rte_lcore.h
index 4c7d6bb..facdbdc 100644
--- a/lib/librte_eal/common/include/rte_lcore.h
+++ b/lib/librte_eal/common/include/rte_lcore.h
@@ -43,6 +43,7 @@
 #include <rte_per_lcore.h>
 #include <rte_eal.h>
 #include <rte_launch.h>
+#include <rte_memory.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -80,7 +81,9 @@ struct lcore_config {
  */
 extern struct lcore_config lcore_config[RTE_MAX_LCORE];
 
-RTE_DECLARE_PER_LCORE(unsigned, _lcore_id); /**< Per core "core id". */
+RTE_DECLARE_PER_LCORE(unsigned, _lcore_id);  /**< Per thread "lcore id". */
+RTE_DECLARE_PER_LCORE(unsigned, _socket_id); /**< Per thread "socket id". */
+RTE_DECLARE_PER_LCORE(rte_cpuset_t, _cpuset); /**< Per thread "cpuset". */
 
 /**
  * Return the ID of the execution unit we are running on.
@@ -146,7 +149,7 @@ rte_lcore_index(int lcore_id)
 static inline unsigned
 rte_socket_id(void)
 {
-	return lcore_config[rte_lcore_id()].socket_id;
+	return RTE_PER_LCORE(_socket_id);
 }
 
 /**
@@ -229,6 +232,28 @@ rte_get_next_lcore(unsigned i, int skip_master, int wrap)
 	     i<RTE_MAX_LCORE;						\
 	     i = rte_get_next_lcore(i, 1, 0))
 
+/**
+ * Set core affinity of the current thread.
+ * Support both EAL and none-EAL thread and update TLS.
+ *
+ * @param cpusetp
+ *   Point to cpu_set_t for setting current thread affinity.
+ * @return
+ *   On success, return 0; otherwise return -1;
+ */
+int rte_thread_set_affinity(rte_cpuset_t *cpusetp);
+
+/**
+ * Get core affinity of the current thread.
+ *
+ * @param cpusetp
+ *   Point to cpu_set_t for getting current thread cpu affinity.
+ * @return
+ *   On success, return 0; otherwise return -1;
+ */
+int rte_thread_get_affinity(rte_cpuset_t *cpusetp);
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/lib/librte_eal/linuxapp/eal/eal_thread.c b/lib/librte_eal/linuxapp/eal/eal_thread.c
index 80a985f..748a83a 100644
--- a/lib/librte_eal/linuxapp/eal/eal_thread.c
+++ b/lib/librte_eal/linuxapp/eal/eal_thread.c
@@ -56,6 +56,8 @@
 #include "eal_thread.h"
 
 RTE_DEFINE_PER_LCORE(unsigned, _lcore_id);
+RTE_DEFINE_PER_LCORE(unsigned, _socket_id);
+RTE_DEFINE_PER_LCORE(rte_cpuset_t, _cpuset);
 
 /*
  * Send a message to a slave lcore identified by slave_id to call a
-- 
1.8.1.4