[PATCH v2 for-next 2/5] RDMA/rtrs-clt: Use this_cpu_ API for stats

[Md Haris Iqbal <haris.iqbal@ionos.com>]

From: Santosh Kumar Pradhan <santosh.pradhan@ionos.com>

Use this_cpu_x() for increasing/adding a percpu counter through a
percpu pointer without the need to disable/enable preemption.

Suggested-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Santosh Kumar Pradhan <santosh.pradhan@ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Md Haris Iqbal <haris.iqbal@ionos.com>
Acked-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Reviewed-by: Christoph Lameter <cl@linux.com>
---
v1 -> v2: Added Acked-by, Reviewed-by.

 drivers/infiniband/ulp/rtrs/rtrs-clt-stats.c | 14 +++-----------
 1 file changed, 3 insertions(+), 11 deletions(-)

diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt-stats.c b/drivers/infiniband/ulp/rtrs/rtrs-clt-stats.c
index 385a19846c24..1e6ffafa2db3 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-clt-stats.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt-stats.c
@@ -32,11 +32,7 @@ void rtrs_clt_update_wc_stats(struct rtrs_clt_con *con)
 
 void rtrs_clt_inc_failover_cnt(struct rtrs_clt_stats *stats)
 {
-	struct rtrs_clt_stats_pcpu *s;
-
-	s = get_cpu_ptr(stats->pcpu_stats);
-	s->rdma.failover_cnt++;
-	put_cpu_ptr(stats->pcpu_stats);
+	this_cpu_inc(stats->pcpu_stats->rdma.failover_cnt);
 }
 
 int rtrs_clt_stats_migration_from_cnt_to_str(struct rtrs_clt_stats *stats, char *buf)
@@ -169,12 +165,8 @@ int rtrs_clt_reset_all_stats(struct rtrs_clt_stats *s, bool enable)
 static inline void rtrs_clt_update_rdma_stats(struct rtrs_clt_stats *stats,
 					       size_t size, int d)
 {
-	struct rtrs_clt_stats_pcpu *s;
-
-	s = get_cpu_ptr(stats->pcpu_stats);
-	s->rdma.dir[d].cnt++;
-	s->rdma.dir[d].size_total += size;
-	put_cpu_ptr(stats->pcpu_stats);
+	this_cpu_inc(stats->pcpu_stats->rdma.dir[d].cnt);
+	this_cpu_add(stats->pcpu_stats->rdma.dir[d].size_total, size);
 }
 
 void rtrs_clt_update_all_stats(struct rtrs_clt_io_req *req, int dir)
-- 
2.25.1