From: Phil Yang <phil.yang@arm.com>
Date: Thu, 24 Sep 2020 05:39:26 +0000 (+0800)
Subject: bbdev: use C11 atomics for device processing counter
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=b5bafde26cca534be643859169b45e8249a39787;p=dpdk.git

bbdev: use C11 atomics for device processing counter

Since rte_atomicXX APIs are not allowed to be used, use C11 atomic builtins
for device processing counter.

Signed-off-by: Phil Yang <phil.yang@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Acked-by: Nicolas Chautru <nicolas.chautru@intel.com>
---

diff --git a/lib/librte_bbdev/rte_bbdev.c b/lib/librte_bbdev/rte_bbdev.c
index a4fdb6905b..5ba891c232 100644
--- a/lib/librte_bbdev/rte_bbdev.c
+++ b/lib/librte_bbdev/rte_bbdev.c
@@ -210,7 +210,7 @@ rte_bbdev_allocate(const char *name)
 		return NULL;
 	}
 
-	rte_atomic16_inc(&bbdev->data->process_cnt);
+	__atomic_add_fetch(&bbdev->data->process_cnt, 1, __ATOMIC_RELAXED);
 	bbdev->data->dev_id = dev_id;
 	bbdev->state = RTE_BBDEV_INITIALIZED;
 
@@ -252,7 +252,8 @@ rte_bbdev_release(struct rte_bbdev *bbdev)
 	}
 
 	/* clear shared BBDev Data if no process is using the device anymore */
-	if (rte_atomic16_dec_and_test(&bbdev->data->process_cnt))
+	if (__atomic_sub_fetch(&bbdev->data->process_cnt, 1,
+			      __ATOMIC_RELAXED) == 0)
 		memset(bbdev->data, 0, sizeof(*bbdev->data));
 
 	memset(bbdev, 0, sizeof(*bbdev));
diff --git a/lib/librte_bbdev/rte_bbdev.h b/lib/librte_bbdev/rte_bbdev.h
index 57291373fa..7017124414 100644
--- a/lib/librte_bbdev/rte_bbdev.h
+++ b/lib/librte_bbdev/rte_bbdev.h
@@ -33,7 +33,6 @@ extern "C" {
 #include <string.h>
 
 #include <rte_compat.h>
-#include <rte_atomic.h>
 #include <rte_bus.h>
 #include <rte_cpuflags.h>
 #include <rte_memory.h>
@@ -426,8 +425,7 @@ struct rte_bbdev_data {
 	uint16_t dev_id;  /**< Device ID */
 	int socket_id;  /**< NUMA socket that device is on */
 	bool started;  /**< Device run-time state */
-	/** Counter of processes using the device */
-	rte_atomic16_t process_cnt;
+	uint16_t process_cnt;  /** Counter of processes using the device */
 };
 
 /* Forward declarations */