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Date: Tue, 23 Jul 2019 21:01:54 +0300
From: Leon Romanovsky <leon@...nel.org>
To: Saeed Mahameed <saeedm@...lanox.com>
Cc: "cai@....pw" <cai@....pw>,
"davem@...emloft.net" <davem@...emloft.net>,
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>,
"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, Jul 23, 2019 at 05:05:19PM +0000, Saeed Mahameed wrote:
> 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"
Are you talking about this merged patch? If yes, it was incomplete.
ommit bedc0fd0f9b517698193d644f914b33951856fd2
Author: Qian Cai <cai@....pw>
Date: Thu Jul 11 09:55:56 2019 -0400
RDMA/core: 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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