[dpdk-stable] [PATCH 2/7 v2] bus/dpaa: allocate qman portals in thread safe manner
Nipun Gupta
nipun.gupta at nxp.com
Tue Jan 23 13:27:02 CET 2018
Fixes: 9d32ef0f5d61 ("bus/dpaa: support creating dynamic HW portal")
Cc: stable at dpdk.org
Signed-off-by: Nipun Gupta <nipun.gupta at nxp.com>
---
drivers/bus/dpaa/base/qbman/qman.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/bus/dpaa/base/qbman/qman.c b/drivers/bus/dpaa/base/qbman/qman.c
index e7fdf03..4d8bdae 100644
--- a/drivers/bus/dpaa/base/qbman/qman.c
+++ b/drivers/bus/dpaa/base/qbman/qman.c
@@ -625,7 +625,7 @@ struct qman_portal *qman_create_portal(
#define MAX_GLOBAL_PORTALS 8
static struct qman_portal global_portals[MAX_GLOBAL_PORTALS];
-static int global_portals_used[MAX_GLOBAL_PORTALS];
+rte_atomic16_t global_portals_used[MAX_GLOBAL_PORTALS];
static struct qman_portal *
qman_alloc_global_portal(void)
@@ -633,10 +633,8 @@ struct qman_portal *qman_create_portal(
unsigned int i;
for (i = 0; i < MAX_GLOBAL_PORTALS; i++) {
- if (global_portals_used[i] == 0) {
- global_portals_used[i] = 1;
+ if (rte_atomic16_test_and_set(&global_portals_used[i]))
return &global_portals[i];
- }
}
pr_err("No portal available (%x)\n", MAX_GLOBAL_PORTALS);
@@ -650,7 +648,7 @@ struct qman_portal *qman_create_portal(
for (i = 0; i < MAX_GLOBAL_PORTALS; i++) {
if (&global_portals[i] == portal) {
- global_portals_used[i] = 0;
+ rte_atomic16_clear(&global_portals_used[i]);
return 0;
}
}
--
1.9.1
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