vdpa/mlx5: replace pthread functions unavailable in musl

1/ The function pthread_yield() does not exist in musl libc,
and can be replaced with sched_yield() after including sched.h.

2/ The function pthread_attr_setaffinity_np() does not exist in musl libc,
and can be replaced with pthread_setaffinity_np() after pthread_create().

Fixes: b7fa0bf4d5c6 ("vdpa/mlx5: fix polling threads scheduling")
Fixes: 5cf3fd3af4df ("vdpa/mlx5: add CPU core parameter to bind polling thread")
Cc: stable@dpdk.org
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Matan Azrad <matan@nvidia.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Acked-by: David Marchand <david.marchand@redhat.com>

diff --git a/drivers/vdpa/mlx5/mlx5_vdpa_event.c b/drivers/vdpa/mlx5/mlx5_vdpa_event.c
index 7cf2c76..404e135 100644 (file)
--- a/drivers/vdpa/mlx5/mlx5_vdpa_event.c
+++ b/drivers/vdpa/mlx5/mlx5_vdpa_event.c
@@ -3,6 +3,7 @@
  */
 #include <unistd.h>
 #include <stdint.h>
+#include <sched.h>
 #include <fcntl.h>
 #include <sys/eventfd.h>
 
@@ -234,7 +235,7 @@ mlx5_vdpa_timer_sleep(struct mlx5_vdpa_priv *priv, uint32_t max)
                usleep(priv->timer_delay_us);
        else
                /* Give-up CPU to improve polling threads scheduling. */
-               pthread_yield();
+               sched_yield();
 }
 
 static void *
@@ -515,17 +516,6 @@ mlx5_vdpa_cqe_event_setup(struct mlx5_vdpa_priv *priv)
                pthread_cond_init(&priv->timer_cond, NULL);
                priv->timer_on = 0;
                pthread_attr_init(&attr);
-               CPU_ZERO(&cpuset);
-               if (priv->event_core != -1)
-                       CPU_SET(priv->event_core, &cpuset);
-               else
-                       cpuset = rte_lcore_cpuset(rte_get_main_lcore());
-               ret = pthread_attr_setaffinity_np(&attr, sizeof(cpuset),
-                                                 &cpuset);
-               if (ret) {
-                       DRV_LOG(ERR, "Failed to set thread affinity.");
-                       return -1;
-               }
                ret = pthread_attr_setschedpolicy(&attr, SCHED_RR);
                if (ret) {
                        DRV_LOG(ERR, "Failed to set thread sched policy = RR.");
@@ -542,6 +532,17 @@ mlx5_vdpa_cqe_event_setup(struct mlx5_vdpa_priv *priv)
                        DRV_LOG(ERR, "Failed to create timer thread.");
                        return -1;
                }
+               CPU_ZERO(&cpuset);
+               if (priv->event_core != -1)
+                       CPU_SET(priv->event_core, &cpuset);
+               else
+                       cpuset = rte_lcore_cpuset(rte_get_main_lcore());
+               ret = pthread_setaffinity_np(priv->timer_tid,
+                                            sizeof(cpuset), &cpuset);
+               if (ret) {
+                       DRV_LOG(ERR, "Failed to set thread affinity.");
+                       goto error;
+               }
                snprintf(name, sizeof(name), "vDPA-mlx5-%d", priv->vid);
                ret = pthread_setname_np(priv->timer_tid, name);
                if (ret) {