linux-kernel - [PATCH] linux/dim: fix -Wunused-const-variable warnings

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Date:   Mon, 22 Jul 2019 09:08:43 -0400
From:   Qian Cai <cai@....pw>
To:     talgi@...lanox.com
Cc:     saeedm@...lanox.com, linux-kernel@...r.kernel.org,
        Qian Cai <cai@....pw>
Subject: [PATCH] linux/dim: fix -Wunused-const-variable warnings

There are a lot of compilation warnings due to tx_profile[] and
rx_profile[] are only used in lib/dim/net_dim.c but include/linux/dim.h
is included elsewhere.

In file included from ./include/rdma/ib_verbs.h:64,
                 from ./include/linux/mlx5/device.h:37,
                 from ./include/linux/mlx5/driver.h:51,
                 from
drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c:37:
./include/linux/dim.h:326:1: warning: 'tx_profile' defined but not used
[-Wunused-const-variable=]
 tx_profile[DIM_CQ_PERIOD_NUM_MODES][NET_DIM_PARAMS_NUM_PROFILES] = {
 ^~~~~~~~~~
./include/linux/dim.h:320:1: warning: 'rx_profile' defined but not used
[-Wunused-const-variable=]
 rx_profile[DIM_CQ_PERIOD_NUM_MODES][NET_DIM_PARAMS_NUM_PROFILES] = {
 ^~~~~~~~~~

Fix them by moving tx_profile[] and rx_profile[] into lib/dim/net_dim.c
instead.

Signed-off-by: Qian Cai <cai@....pw>
---
 include/linux/dim.h | 12 ------------
 lib/dim/net_dim.c   | 12 ++++++++++++
 2 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/include/linux/dim.h b/include/linux/dim.h
index d3a0fbfff2bb..d5f3b10fe6e1 100644
--- a/include/linux/dim.h
+++ b/include/linux/dim.h
@@ -316,18 +316,6 @@ void dim_calc_stats(struct dim_sample *start, struct dim_sample *end,
 	{64, 32}   \
 }
 
-static const struct dim_cq_moder
-rx_profile[DIM_CQ_PERIOD_NUM_MODES][NET_DIM_PARAMS_NUM_PROFILES] = {
-	NET_DIM_RX_EQE_PROFILES,
-	NET_DIM_RX_CQE_PROFILES,
-};
-
-static const struct dim_cq_moder
-tx_profile[DIM_CQ_PERIOD_NUM_MODES][NET_DIM_PARAMS_NUM_PROFILES] = {
-	NET_DIM_TX_EQE_PROFILES,
-	NET_DIM_TX_CQE_PROFILES,
-};
-
 /**
  *	net_dim_get_rx_moderation - provide a CQ moderation object for the given RX profile
  *	@cq_period_mode: CQ period mode
diff --git a/lib/dim/net_dim.c b/lib/dim/net_dim.c
index 5bcc902c5388..f2a8674721cf 100644
--- a/lib/dim/net_dim.c
+++ b/lib/dim/net_dim.c
@@ -5,6 +5,18 @@
 
 #include <linux/dim.h>
 
+static const struct dim_cq_moder
+rx_profile[DIM_CQ_PERIOD_NUM_MODES][NET_DIM_PARAMS_NUM_PROFILES] = {
+	NET_DIM_RX_EQE_PROFILES,
+	NET_DIM_RX_CQE_PROFILES,
+};
+
+static const struct dim_cq_moder
+tx_profile[DIM_CQ_PERIOD_NUM_MODES][NET_DIM_PARAMS_NUM_PROFILES] = {
+	NET_DIM_TX_EQE_PROFILES,
+	NET_DIM_TX_CQE_PROFILES,
+};
+
 struct dim_cq_moder
 net_dim_get_rx_moderation(u8 cq_period_mode, int ix)
 {
-- 
1.8.3.1