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commit 121a1e14d0b3b205420df876587ec1e8ef4cf723
Author: Josep Puigdemont <josep.puigdemont(a)linaro.org>
Date: Thu Dec 14 15:45:12 2017 +0100
physmem: rename init/term functions
Signed-off-by: Josep Puigdemont <josep.puigdemont(a)linaro.org>
diff --git a/platform/linux-generic/pktio/physmem/physmem.c b/platform/linux-generic/pktio/physmem/physmem.c
index 54b62d2d..b426c21d 100644
--- a/platform/linux-generic/pktio/physmem/physmem.c
+++ b/platform/linux-generic/pktio/physmem/physmem.c
@@ -544,7 +544,7 @@ static void init_blocks(void)
LIST_INIT(&block_data.empty);
}
-int physmem_block_global_init(void)
+int physmem_block_init_global(void)
{
init_blocks();
@@ -557,7 +557,7 @@ int physmem_block_global_init(void)
return 0;
}
-int physmem_block_global_term(void)
+int physmem_block_term_global(void)
{
for (int i = 0; i < MAX_HUGEPAGES; ++i) {
if (pages[i].fd == 0)
diff --git a/platform/linux-generic/pktio/physmem/physmem.h b/platform/linux-generic/pktio/physmem/physmem.h
index 0ebc2ba6..9a7f37c4 100644
--- a/platform/linux-generic/pktio/physmem/physmem.h
+++ b/platform/linux-generic/pktio/physmem/physmem.h
@@ -32,8 +32,8 @@ struct physmem_block {
physmem_block_type_t type;
};
-int physmem_block_global_init(void);
-int physmem_block_global_term(void);
+int physmem_block_init_global(void);
+int physmem_block_term_global(void);
struct physmem_block *physmem_block_alloc(uint64_t);
void physmem_block_free(struct physmem_block *);
-----------------------------------------------------------------------
Summary of changes:
platform/linux-generic/pktio/physmem/physmem.c | 4 ++--
platform/linux-generic/pktio/physmem/physmem.h | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
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commit da9d347e0bbe337ea86448306432080206f3ef49
Author: Petri Savolainen <petri.savolainen(a)linaro.org>
Date: Tue Nov 21 14:12:02 2017 +0200
validation: queue: refer to blocking level
Refer to the new blocking level capability and parameter
fields to check that those exist.
Signed-off-by: Petri Savolainen <petri.savolainen(a)linaro.org>
Reviewed-by: Balasubramanian Manoharan <bala.manoharan(a)linaro.org>
Reviewed-by: Bill Fischofer <bill.fischofer(a)linaro.org>
Signed-off-by: Maxim Uvarov <maxim.uvarov(a)linaro.org>
diff --git a/test/validation/api/queue/queue.c b/test/validation/api/queue/queue.c
index 1ec05b1f..3c6db33a 100644
--- a/test/validation/api/queue/queue.c
+++ b/test/validation/api/queue/queue.c
@@ -69,6 +69,8 @@ void queue_test_capa(void)
CU_ASSERT(capa.sched_prios != 0);
CU_ASSERT(capa.plain.max_num != 0);
CU_ASSERT(capa.sched.max_num != 0);
+ CU_ASSERT(capa.plain.nonblocking >= ODP_BLOCKING);
+ CU_ASSERT(capa.sched.nonblocking >= ODP_BLOCKING);
min = capa.plain.max_num;
if (min > capa.sched.max_num)
@@ -82,6 +84,7 @@ void queue_test_capa(void)
name[ODP_QUEUE_NAME_LEN - 1] = 0;
odp_queue_param_init(&qparams);
+ CU_ASSERT(qparams.nonblocking == ODP_BLOCKING);
for (j = 0; j < 2; j++) {
if (j == 0) {
commit d533d85ad15ea431a431c407dad468e38ae87ec0
Author: Petri Savolainen <petri.savolainen(a)linaro.org>
Date: Tue Nov 21 13:52:00 2017 +0200
linux-gen: queue: fill blocking capa
Currently, only blocking queues are implemented.
Signed-off-by: Petri Savolainen <petri.savolainen(a)linaro.org>
Reviewed-by: Balasubramanian Manoharan <bala.manoharan(a)linaro.org>
Reviewed-by: Bill Fischofer <bill.fischofer(a)linaro.org>
Signed-off-by: Maxim Uvarov <maxim.uvarov(a)linaro.org>
diff --git a/platform/linux-generic/odp_queue.c b/platform/linux-generic/odp_queue.c
index 3f355e69..58103930 100644
--- a/platform/linux-generic/odp_queue.c
+++ b/platform/linux-generic/odp_queue.c
@@ -150,7 +150,9 @@ static int queue_capability(odp_queue_capability_t *capa)
capa->max_sched_groups = sched_fn->num_grps();
capa->sched_prios = odp_schedule_num_prio();
capa->plain.max_num = capa->max_queues;
+ capa->plain.nonblocking = ODP_BLOCKING;
capa->sched.max_num = capa->max_queues;
+ capa->sched.nonblocking = ODP_BLOCKING;
return 0;
}
@@ -601,6 +603,7 @@ static void queue_param_init(odp_queue_param_t *params)
params->type = ODP_QUEUE_TYPE_PLAIN;
params->enq_mode = ODP_QUEUE_OP_MT;
params->deq_mode = ODP_QUEUE_OP_MT;
+ params->nonblocking = ODP_BLOCKING;
params->sched.prio = ODP_SCHED_PRIO_DEFAULT;
params->sched.sync = ODP_SCHED_SYNC_PARALLEL;
params->sched.group = ODP_SCHED_GROUP_ALL;
diff --git a/platform/linux-generic/odp_queue_scalable.c b/platform/linux-generic/odp_queue_scalable.c
index 07201ce7..88a5a8c2 100644
--- a/platform/linux-generic/odp_queue_scalable.c
+++ b/platform/linux-generic/odp_queue_scalable.c
@@ -315,8 +315,10 @@ static int queue_capability(odp_queue_capability_t *capa)
capa->sched_prios = odp_schedule_num_prio();
capa->plain.max_num = ODP_CONFIG_QUEUES - NUM_INTERNAL_QUEUES;
capa->plain.max_size = 0;
+ capa->plain.nonblocking = ODP_BLOCKING;
capa->sched.max_num = ODP_CONFIG_QUEUES - NUM_INTERNAL_QUEUES;
capa->sched.max_size = 0;
+ capa->sched.nonblocking = ODP_BLOCKING;
return 0;
}
@@ -861,6 +863,7 @@ static void queue_param_init(odp_queue_param_t *params)
params->type = ODP_QUEUE_TYPE_PLAIN;
params->enq_mode = ODP_QUEUE_OP_MT;
params->deq_mode = ODP_QUEUE_OP_MT;
+ params->nonblocking = ODP_BLOCKING;
params->sched.prio = ODP_SCHED_PRIO_DEFAULT;
params->sched.sync = ODP_SCHED_SYNC_PARALLEL;
params->sched.group = ODP_SCHED_GROUP_ALL;
commit fa7ce5da4b669e55b8d34c7d90b67070879ba5da
Author: Petri Savolainen <petri.savolainen(a)linaro.org>
Date: Tue Nov 21 13:41:14 2017 +0200
api: queue: non-blocking level parameter
Add queue parameter and capability to indicate queue operation
blocking level. This guarantee of non-blocking is important for
real-time applications. HW based implementations may be always
non-blocking. Where as, SW based implementation need to trade-off
between block freedom and performance.
Signed-off-by: Petri Savolainen <petri.savolainen(a)linaro.org>
Reviewed-by: Balasubramanian Manoharan <bala.manoharan(a)linaro.org>
Reviewed-by: Bill Fischofer <bill.fischofer(a)linaro.org>
Signed-off-by: Maxim Uvarov <maxim.uvarov(a)linaro.org>
diff --git a/include/odp/api/spec/queue.h b/include/odp/api/spec/queue.h
index 014d3362..79a26df3 100644
--- a/include/odp/api/spec/queue.h
+++ b/include/odp/api/spec/queue.h
@@ -96,6 +96,54 @@ typedef enum odp_queue_op_mode_t {
} odp_queue_op_mode_t;
+/**
+ * Non-blocking level
+ *
+ * A non-blocking level defines implementation guarantees for application
+ * progress when multiple threads operate on the same resource (e.g. a queue)
+ * simultaneously. The first level (ODP_BLOCKING) does not have any block
+ * freedom guarantees, but a suspending thread may block the other threads for
+ * the entire time it remains suspended (infinitely if crashed).
+ * On the contrary, actual non-blocking levels provide guarantees of progress:
+ *
+ * ODP_NONBLOCKING_LF: A non-blocking and lock-free implementation guarantees
+ * that at least one of the threads successfully completes
+ * its operations, regardless of what other threads do.
+ * Application progress is guaranteed, but individual
+ * threads may starve while trying to execute their
+ * operations on the shared resource.
+ *
+ * ODP_NONBLOCKING_WF: A non-blocking and wait-free implementation guarantees
+ * application progress with starvation freedom. All
+ * threads are guaranteed to complete their operations in
+ * a bounded number of steps, regardless of what other
+ * threads do.
+ *
+ * Non-blocking levels are listed from the weakest to the strongest guarantee of
+ * block freedom. Performance of a non-blocking implementation may be lower than
+ * the blocking one. Non-blocking guarantees are important e.g. for real-time
+ * applications when real-time and non real-time threads share a resource.
+ */
+typedef enum odp_nonblocking_t {
+ /** Blocking implementation. A suspeding thread may block all other
+ * threads, i.e. no block freedom guarantees. This is the lowest level.
+ */
+ ODP_BLOCKING = 0,
+
+ /** Non-blocking and lock-free implementation. Other threads can make
+ * progress while a thread is suspended. Starvation freedom is not
+ * guaranteed.
+ */
+ ODP_NONBLOCKING_LF,
+
+ /** Non-blocking and wait-free implementation. Other threads can make
+ * progress while a thread is suspended. Starvation freedom is
+ * guaranteed.
+ */
+ ODP_NONBLOCKING_WF
+
+} odp_nonblocking_t;
+
/**
* Queue capabilities
*/
@@ -125,6 +173,10 @@ typedef struct odp_queue_capability_t {
* store all available events. */
uint32_t max_size;
+ /** The strongest guarantee of block freedom that is supported
+ * for plain queues. */
+ odp_nonblocking_t nonblocking;
+
} plain;
/** Scheduled queue capabilities */
@@ -138,6 +190,10 @@ typedef struct odp_queue_capability_t {
* store all available events. */
uint32_t max_size;
+ /** The strongest guarantee of block freedom that is supported
+ * for scheduled queues. */
+ odp_nonblocking_t nonblocking;
+
} sched;
} odp_queue_capability_t;
@@ -178,6 +234,13 @@ typedef struct odp_queue_param_t {
* ODP_QUEUE_TYPE_SCHED. */
odp_schedule_param_t sched;
+ /** Non-blocking level
+ *
+ * Queue implementation must guarantee at least this level of block
+ * freedom for queue enqueue and dequeue/schedule operations.
+ * The default value is ODP_BLOCKING. */
+ odp_nonblocking_t nonblocking;
+
/** Queue context pointer
*
* User defined context pointer associated with the queue. The same
-----------------------------------------------------------------------
Summary of changes:
include/odp/api/spec/queue.h | 63 +++++++++++++++++++++++++++++
platform/linux-generic/odp_queue.c | 3 ++
platform/linux-generic/odp_queue_scalable.c | 3 ++
test/validation/api/queue/queue.c | 3 ++
4 files changed, 72 insertions(+)
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