Re: [PATCH v6 06/19] eal: new TLS definition and API declaration

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 <redacted>
---
 v5 changes:
   add comments for RTE_CPU_AFFINITY_STR_LEN
   update comments for eal_thread_dump_affinity()
   return void for rte_thread_get_affinity()
   move rte_socket_id() change to another patch

 lib/librte_eal/bsdapp/eal/eal_thread.c    |  2 ++
 lib/librte_eal/common/eal_thread.h        | 36 +++++++++++++++++++++++++++++++
 lib/librte_eal/common/include/rte_lcore.h | 26 +++++++++++++++++++++-
 lib/librte_eal/linuxapp/eal/eal_thread.c  |  2 ++
 4 files changed, 65 insertions(+), 1 deletion(-)

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 f1ce0bd..e4e76b9 100644
--- a/lib/librte_eal/common/eal_thread.h
+++ b/lib/librte_eal/common/eal_thread.h

@@ -34,6 +34,8 @@
 #ifndef EAL_THREAD_H
 #define EAL_THREAD_H
 
+#include <rte_lcore.h>
+
 /**
  * basic loop of thread, called for each thread by eal_init().
  *

@@ -61,4 +63,38 @@ void eal_thread_init_master(unsigned lcore_id);
  */
 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
+ */
+int eal_cpuset_socket_id(rte_cpuset_t *cpusetp);
+
+/**
+ * Default buffer size to use with eal_thread_dump_affinity()
+ */
+#define RTE_CPU_AFFINITY_STR_LEN            256
+
+/**
+ * Dump the current pthread cpuset.
+ * This function is private to EAL.
+ *
+ * Note:
+ *   If the dump size is greater than the size of given buffer,
+ *   the string will be truncated and with '\0' at the end.
+ *
+ * @param str
+ *   The string buffer the cpuset will dump to.
+ * @param size
+ *   The string buffer size.
+ * @return
+ *   0 for success, -1 if truncation happens.
+ */
+int
+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..33f558e 100644
--- a/lib/librte_eal/common/include/rte_lcore.h
+++ b/lib/librte_eal/common/include/rte_lcore.h

@@ -80,7 +80,9 @@ 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.

@@ -229,6 +231,28 @@ 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.
+ *   It presumes input is not NULL, otherwise it causes panic.
+ *
+ */
+void 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