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Message-ID: <63328bfc11778eb851773872aa30d15796a428d9.camel@mellanox.com>
Date: Tue, 23 Jul 2019 17:05:19 +0000
From: Saeed Mahameed <saeedm@...lanox.com>
To: "cai@....pw" <cai@....pw>,
"davem@...emloft.net" <davem@...emloft.net>,
"leon@...nel.org" <leon@...nel.org>
CC: Jason Gunthorpe <jgg@...lanox.com>,
Yamin Friedman <yaminf@...lanox.com>,
"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
Tal Gilboa <talgi@...lanox.com>,
Leon Romanovsky <leonro@...lanox.com>,
"dledford@...hat.com" <dledford@...hat.com>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH net 2/2] lib/dim: Fix -Wunused-const-variable warnings
On Tue, 2019-07-23 at 10:22 +0300, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@...lanox.com>
>
> DIM causes to the following warnings during kernel compilation
> which indicates that tx_profile and rx_profile are supposed to
> be declared in *.c and not in *.h files.
>
> 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 ./include/linux/mlx5/vport.h:36,
> from drivers/infiniband/hw/mlx5/ib_virt.c:34:
> ./include/linux/dim.h:326:1: warning: _tx_profile_ defined but not
> used [-Wunused-const-variable=]
> 326 |
> 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=]
> 320 |
> rx_profile[DIM_CQ_PERIOD_NUM_MODES][NET_DIM_PARAMS_NUM_PROFILES] = {
> | ^~~~~~~~~~
>
> Fixes: 4f75da3666c0 ("linux/dim: Move implementation to .c files")
> Signed-off-by: Leon Romanovsky <leonro@...lanox.com>
A similar patch was already submitted to linux-kernel ML,
"[PATCH] linux/dim: fix -Wunused-const-variable warnings"
I basically asked Qian to do the same as you did in this patch.
Anyway i guess it is ok to drop that patch and keep this one.
Acked-by: Saeed Mahameed <saeedm@...lanox.com>
> ---
> include/linux/dim.h | 56 -----------------------------------------
> ----
> lib/dim/net_dim.c | 56
> +++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 56 insertions(+), 56 deletions(-)
>
> diff --git a/include/linux/dim.h b/include/linux/dim.h
> index d3a0fbfff2bb..9fa4b3f88c39 100644
> --- a/include/linux/dim.h
> +++ b/include/linux/dim.h
> @@ -272,62 +272,6 @@ dim_update_sample_with_comps(u16 event_ctr, u64
> packets, u64 bytes, u64 comps,
>
> /* Net DIM */
>
> -/*
> - * Net DIM profiles:
> - * There are different set of profiles for each CQ period
> mode.
> - * There are different set of profiles for RX/TX CQs.
> - * Each profile size must be of NET_DIM_PARAMS_NUM_PROFILES
> - */
> -#define NET_DIM_PARAMS_NUM_PROFILES 5
> -#define NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE 256
> -#define NET_DIM_DEFAULT_TX_CQ_MODERATION_PKTS_FROM_EQE 128
> -#define NET_DIM_DEF_PROFILE_CQE 1
> -#define NET_DIM_DEF_PROFILE_EQE 1
> -
> -#define NET_DIM_RX_EQE_PROFILES { \
> - {1, NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
> - {8, NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
> - {64, NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
> - {128, NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
> - {256, NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
> -}
> -
> -#define NET_DIM_RX_CQE_PROFILES { \
> - {2, 256}, \
> - {8, 128}, \
> - {16, 64}, \
> - {32, 64}, \
> - {64, 64} \
> -}
> -
> -#define NET_DIM_TX_EQE_PROFILES { \
> - {1, NET_DIM_DEFAULT_TX_CQ_MODERATION_PKTS_FROM_EQE}, \
> - {8, NET_DIM_DEFAULT_TX_CQ_MODERATION_PKTS_FROM_EQE}, \
> - {32, NET_DIM_DEFAULT_TX_CQ_MODERATION_PKTS_FROM_EQE}, \
> - {64, NET_DIM_DEFAULT_TX_CQ_MODERATION_PKTS_FROM_EQE}, \
> - {128, NET_DIM_DEFAULT_TX_CQ_MODERATION_PKTS_FROM_EQE} \
> -}
> -
> -#define NET_DIM_TX_CQE_PROFILES { \
> - {5, 128}, \
> - {8, 64}, \
> - {16, 32}, \
> - {32, 32}, \
> - {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..a4db51c21266 100644
> --- a/lib/dim/net_dim.c
> +++ b/lib/dim/net_dim.c
> @@ -5,6 +5,62 @@
>
> #include <linux/dim.h>
>
> +/*
> + * Net DIM profiles:
> + * There are different set of profiles for each CQ period
> mode.
> + * There are different set of profiles for RX/TX CQs.
> + * Each profile size must be of NET_DIM_PARAMS_NUM_PROFILES
> + */
> +#define NET_DIM_PARAMS_NUM_PROFILES 5
> +#define NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE 256
> +#define NET_DIM_DEFAULT_TX_CQ_MODERATION_PKTS_FROM_EQE 128
> +#define NET_DIM_DEF_PROFILE_CQE 1
> +#define NET_DIM_DEF_PROFILE_EQE 1
> +
> +#define NET_DIM_RX_EQE_PROFILES { \
> + {1, NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
> + {8, NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
> + {64, NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
> + {128, NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
> + {256, NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
> +}
> +
> +#define NET_DIM_RX_CQE_PROFILES { \
> + {2, 256}, \
> + {8, 128}, \
> + {16, 64}, \
> + {32, 64}, \
> + {64, 64} \
> +}
> +
> +#define NET_DIM_TX_EQE_PROFILES { \
> + {1, NET_DIM_DEFAULT_TX_CQ_MODERATION_PKTS_FROM_EQE}, \
> + {8, NET_DIM_DEFAULT_TX_CQ_MODERATION_PKTS_FROM_EQE}, \
> + {32, NET_DIM_DEFAULT_TX_CQ_MODERATION_PKTS_FROM_EQE}, \
> + {64, NET_DIM_DEFAULT_TX_CQ_MODERATION_PKTS_FROM_EQE}, \
> + {128, NET_DIM_DEFAULT_TX_CQ_MODERATION_PKTS_FROM_EQE} \
> +}
> +
> +#define NET_DIM_TX_CQE_PROFILES { \
> + {5, 128}, \
> + {8, 64}, \
> + {16, 32}, \
> + {32, 32}, \
> + {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,
> +};
> +
> struct dim_cq_moder
> net_dim_get_rx_moderation(u8 cq_period_mode, int ix)
> {
> --
> 2.20.1
>
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