Convert rte_atomic32_cmpset to compiler atomic CAS
operation for channel status sync.
Signed-off-by: Joyce Kong <joyce.k...@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.w...@arm.com>
---
examples/vm_power_manager/channel_monitor.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/examples/vm_power_manager/channel_monitor.c
b/examples/vm_power_manager/channel_monitor.c
index 99f81544d7..3c20406f7c 100644
--- a/examples/vm_power_manager/channel_monitor.c
+++ b/examples/vm_power_manager/channel_monitor.c
@@ -25,7 +25,6 @@
#include <rte_log.h>
#include <rte_memory.h>
#include <rte_malloc.h>
-#include <rte_atomic.h>
#include <rte_cycles.h>
#include <rte_ethdev.h>
#ifdef RTE_NET_I40E
@@ -829,8 +828,9 @@ process_request(struct rte_power_channel_packet *pkt,
if (chan_info == NULL)
return -1;
- if (rte_atomic32_cmpset(&(chan_info->status),
CHANNEL_MGR_CHANNEL_CONNECTED,
- CHANNEL_MGR_CHANNEL_PROCESSING) == 0)
+ uint32_t channel_connected = CHANNEL_MGR_CHANNEL_CONNECTED;
+ if (__atomic_compare_exchange_n(&(chan_info->status),
&channel_connected,
+ CHANNEL_MGR_CHANNEL_PROCESSING, 0, __ATOMIC_RELAXED,
__ATOMIC_RELAXED) == 0)
return -1;
if (pkt->command == RTE_POWER_CPU_POWER) {
@@ -934,8 +934,9 @@ process_request(struct rte_power_channel_packet *pkt,
* Return is not checked as channel status may have been set to DISABLED
* from management thread
*/
- rte_atomic32_cmpset(&(chan_info->status),
CHANNEL_MGR_CHANNEL_PROCESSING,
- CHANNEL_MGR_CHANNEL_CONNECTED);
+ uint32_t channel_processing = CHANNEL_MGR_CHANNEL_PROCESSING;
+ __atomic_compare_exchange_n(&(chan_info->status), &channel_processing,
+ CHANNEL_MGR_CHANNEL_CONNECTED, 0, __ATOMIC_RELAXED,
__ATOMIC_RELAXED);
return 0;
}
--
2.17.1
