rcu: promote library as stable

RCU library supporting quiescent state was introduced
in 19.05 release and has been around 4 releases, it
should be mature enough to remove the experimental tag.

Signed-off-by: Joyce Kong <joyce.kong@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: David Christensen <drc@linux.vnet.ibm.com>

diff --git a/MAINTAINERS b/MAINTAINERS
index 6705c9f..5dfcca7 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1421,7 +1421,7 @@ M: Olivier Matz <olivier.matz@6wind.com>
 F: lib/librte_kvargs/
 F: app/test/test_kvargs.c
 
-RCU - EXPERIMENTAL
+RCU
 M: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
 F: lib/librte_rcu/
 F: app/test/test_rcu*

diff --git a/lib/librte_rcu/rte_rcu_qsbr.h b/lib/librte_rcu/rte_rcu_qsbr.h
index aa237cf..376efc6 100644 (file)
--- a/lib/librte_rcu/rte_rcu_qsbr.h
+++ b/lib/librte_rcu/rte_rcu_qsbr.h
@@ -202,9 +202,6 @@ struct rte_rcu_qsbr_dq_parameters {
 struct rte_rcu_qsbr_dq;
 
 /**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
  * Return the size of the memory occupied by a Quiescent State variable.
  *
  * @param max_threads
@@ -215,14 +212,10 @@ struct rte_rcu_qsbr_dq;
  *   Possible rte_errno codes are:
  *   - EINVAL - max_threads is 0
  */
-__rte_experimental
 size_t
 rte_rcu_qsbr_get_memsize(uint32_t max_threads);
 
 /**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
  * Initialize a Quiescent State (QS) variable.
  *
  * @param v
@@ -237,14 +230,10 @@ rte_rcu_qsbr_get_memsize(uint32_t max_threads);
  *   - EINVAL - max_threads is 0 or 'v' is NULL.
  *
  */
-__rte_experimental
 int
 rte_rcu_qsbr_init(struct rte_rcu_qsbr *v, uint32_t max_threads);
 
 /**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
  * Register a reader thread to report its quiescent state
  * on a QS variable.
  *
@@ -264,14 +253,10 @@ rte_rcu_qsbr_init(struct rte_rcu_qsbr *v, uint32_t max_threads);
  *   the QS variable. thread_id is a value between 0 and (max_threads - 1).
  *   'max_threads' is the parameter passed in 'rte_rcu_qsbr_init' API.
  */
-__rte_experimental
 int
 rte_rcu_qsbr_thread_register(struct rte_rcu_qsbr *v, unsigned int thread_id);
 
 /**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
  * Remove a reader thread, from the list of threads reporting their
  * quiescent state on a QS variable.
  *
@@ -286,14 +271,10 @@ rte_rcu_qsbr_thread_register(struct rte_rcu_qsbr *v, unsigned int thread_id);
  *   Reader thread with this thread ID will stop reporting its quiescent
  *   state on the QS variable.
  */
-__rte_experimental
 int
 rte_rcu_qsbr_thread_unregister(struct rte_rcu_qsbr *v, unsigned int thread_id);
 
 /**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
  * Add a registered reader thread, to the list of threads reporting their
  * quiescent state on a QS variable.
  *
@@ -318,7 +299,6 @@ rte_rcu_qsbr_thread_unregister(struct rte_rcu_qsbr *v, unsigned int thread_id);
  *   Reader thread with this thread ID will report its quiescent state on
  *   the QS variable.
  */
-__rte_experimental
 static __rte_always_inline void
 rte_rcu_qsbr_thread_online(struct rte_rcu_qsbr *v, unsigned int thread_id)
 {
@@ -358,9 +338,6 @@ rte_rcu_qsbr_thread_online(struct rte_rcu_qsbr *v, unsigned int thread_id)
 }
 
 /**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
  * Remove a registered reader thread from the list of threads reporting their
  * quiescent state on a QS variable.
  *
@@ -380,7 +357,6 @@ rte_rcu_qsbr_thread_online(struct rte_rcu_qsbr *v, unsigned int thread_id)
  *   rte_rcu_qsbr_check API will not wait for the reader thread with
  *   this thread ID to report its quiescent state on the QS variable.
  */
-__rte_experimental
 static __rte_always_inline void
 rte_rcu_qsbr_thread_offline(struct rte_rcu_qsbr *v, unsigned int thread_id)
 {
@@ -399,9 +375,6 @@ rte_rcu_qsbr_thread_offline(struct rte_rcu_qsbr *v, unsigned int thread_id)
 }
 
 /**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
  * Acquire a lock for accessing a shared data structure.
  *
  * This is implemented as a lock-free function. It is multi-thread
@@ -421,7 +394,6 @@ rte_rcu_qsbr_thread_offline(struct rte_rcu_qsbr *v, unsigned int thread_id)
  * @param thread_id
  *   Reader thread id
  */
-__rte_experimental
 static __rte_always_inline void
 rte_rcu_qsbr_lock(__rte_unused struct rte_rcu_qsbr *v,
                        __rte_unused unsigned int thread_id)
@@ -436,9 +408,6 @@ rte_rcu_qsbr_lock(__rte_unused struct rte_rcu_qsbr *v,
 }
 
 /**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
  * Release a lock after accessing a shared data structure.
  *
  * This is implemented as a lock-free function. It is multi-thread
@@ -458,7 +427,6 @@ rte_rcu_qsbr_lock(__rte_unused struct rte_rcu_qsbr *v,
  * @param thread_id
  *   Reader thread id
  */
-__rte_experimental
 static __rte_always_inline void
 rte_rcu_qsbr_unlock(__rte_unused struct rte_rcu_qsbr *v,
                        __rte_unused unsigned int thread_id)
@@ -477,9 +445,6 @@ rte_rcu_qsbr_unlock(__rte_unused struct rte_rcu_qsbr *v,
 }
 
 /**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
  * Ask the reader threads to report the quiescent state
  * status.
  *
@@ -492,7 +457,6 @@ rte_rcu_qsbr_unlock(__rte_unused struct rte_rcu_qsbr *v,
  *   - This is the token for this call of the API. This should be
  *     passed to rte_rcu_qsbr_check API.
  */
-__rte_experimental
 static __rte_always_inline uint64_t
 rte_rcu_qsbr_start(struct rte_rcu_qsbr *v)
 {
@@ -511,9 +475,6 @@ rte_rcu_qsbr_start(struct rte_rcu_qsbr *v)
 }
 
 /**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
  * Update quiescent state for a reader thread.
  *
  * This is implemented as a lock-free function. It is multi-thread safe.
@@ -525,7 +486,6 @@ rte_rcu_qsbr_start(struct rte_rcu_qsbr *v)
  * @param thread_id
  *   Update the quiescent state for the reader with this thread ID.
  */
-__rte_experimental
 static __rte_always_inline void
 rte_rcu_qsbr_quiescent(struct rte_rcu_qsbr *v, unsigned int thread_id)
 {
@@ -683,9 +643,6 @@ __rte_rcu_qsbr_check_all(struct rte_rcu_qsbr *v, uint64_t t, bool wait)
 }
 
 /**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
  * Checks if all the reader threads have entered the quiescent state
  * referenced by token.
  *
@@ -716,7 +673,6 @@ __rte_rcu_qsbr_check_all(struct rte_rcu_qsbr *v, uint64_t t, bool wait)
  *   - 1 if all reader threads have passed through specified number
  *     of quiescent states.
  */
-__rte_experimental
 static __rte_always_inline int
 rte_rcu_qsbr_check(struct rte_rcu_qsbr *v, uint64_t t, bool wait)
 {
@@ -740,9 +696,6 @@ rte_rcu_qsbr_check(struct rte_rcu_qsbr *v, uint64_t t, bool wait)
 }
 
 /**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
  * Wait till the reader threads have entered quiescent state.
  *
  * This is implemented as a lock-free function. It is multi-thread safe.
@@ -760,14 +713,10 @@ rte_rcu_qsbr_check(struct rte_rcu_qsbr *v, uint64_t t, bool wait)
  *   on this QS variable (i.e. the calling thread is also part of the
  *   readside critical section). If not, pass RTE_QSBR_THRID_INVALID.
  */
-__rte_experimental
 void
 rte_rcu_qsbr_synchronize(struct rte_rcu_qsbr *v, unsigned int thread_id);
 
 /**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
  * Dump the details of a single QS variables to a file.
  *
  * It is NOT multi-thread safe.
@@ -782,7 +731,6 @@ rte_rcu_qsbr_synchronize(struct rte_rcu_qsbr *v, unsigned int thread_id);
  *   Possible rte_errno codes are:
  *   - EINVAL - NULL parameters are passed
  */
-__rte_experimental
 int
 rte_rcu_qsbr_dump(FILE *f, struct rte_rcu_qsbr *v);
 

diff --git a/lib/librte_rcu/rte_rcu_version.map b/lib/librte_rcu/rte_rcu_version.map
index dfac88a..82e55c6 100644 (file)
--- a/lib/librte_rcu/rte_rcu_version.map
+++ b/lib/librte_rcu/rte_rcu_version.map
@@ -1,4 +1,4 @@
-EXPERIMENTAL {
+DPDK_21 {
        global:
 
        rte_rcu_log_type;
@@ -8,6 +8,13 @@ EXPERIMENTAL {
        rte_rcu_qsbr_synchronize;
        rte_rcu_qsbr_thread_register;
        rte_rcu_qsbr_thread_unregister;
+
+       local: *;
+};
+
+EXPERIMENTAL {
+       global:
+
        rte_rcu_qsbr_dq_create;
        rte_rcu_qsbr_dq_enqueue;
        rte_rcu_qsbr_dq_reclaim;