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Message-ID: <20240329135344.1a310f31@kernel.org>
Date: Fri, 29 Mar 2024 13:53:44 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Alexander Lobakin <aleksander.lobakin@...el.com>
Cc: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
<edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Dmitry Safonov
<0x7f454c46@...il.com>, Heiner Kallweit <hkallweit1@...il.com>,
nex.sw.ncis.osdt.itp.upstreaming@...el.com, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 2/2] netdev_queues: fix -Wshadow / Sparse
shadow warnings throughout the file
On Fri, 29 Mar 2024 13:18:57 -0700 Jakub Kicinski wrote:
> > Sparse:
> >
> > drivers/net/ethernet/intel/idpf/idpf_txrx.c:1992:16: warning: symbol '_res' shadows an earlier one
> > drivers/net/ethernet/intel/idpf/idpf_txrx.c:1992:16: originally declared here
>
> I don't see these building with LLVM=1 W=12 C=1
> and I really don't like complicating the code because the compiler
> is stupid. Can't you solve this with some renames? Add another
> underscore or something?
I'm stupid I tried on the test branch which already had your fix..
This is enough:
diff --git a/include/net/netdev_queues.h b/include/net/netdev_queues.h
index 1ec408585373..2270fbb99cf7 100644
--- a/include/net/netdev_queues.h
+++ b/include/net/netdev_queues.h
@@ -89,7 +89,7 @@ struct netdev_stat_ops {
#define netif_txq_try_stop(txq, get_desc, start_thrs) \
({ \
- int _res; \
+ int __res; \
\
netif_tx_stop_queue(txq); \
/* Producer index and stop bit must be visible \
@@ -101,12 +101,12 @@ struct netdev_stat_ops {
/* We need to check again in a case another \
* CPU has just made room available. \
*/ \
- _res = 0; \
+ __res = 0; \
if (unlikely(get_desc >= start_thrs)) { \
netif_tx_start_queue(txq); \
- _res = -1; \
+ __res = -1; \
} \
- _res; \
+ __res; \
}) \
/**
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Date: Fri, 29 Mar 2024 13:53:44 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Alexander Lobakin <aleksander.lobakin@...el.com>
Cc: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
<edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Dmitry Safonov
<0x7f454c46@...il.com>, Heiner Kallweit <hkallweit1@...il.com>,
nex.sw.ncis.osdt.itp.upstreaming@...el.com, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 2/2] netdev_queues: fix -Wshadow / Sparse
shadow warnings throughout the file
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On Fri, 29 Mar 2024 13:18:57 -0700 Jakub Kicinski wrote:
> > Sparse:
> >
> > drivers/net/ethernet/intel/idpf/idpf_txrx.c:1992:16: warning: symbol '_res' shadows an earlier one
> > drivers/net/ethernet/intel/idpf/idpf_txrx.c:1992:16: originally declared here
>
> I don't see these building with LLVM=1 W=12 C=1
> and I really don't like complicating the code because the compiler
> is stupid. Can't you solve this with some renames? Add another
> underscore or something?
I'm stupid I tried on the test branch which already had your fix..
This is enough:
diff --git a/include/net/netdev_queues.h b/include/net/netdev_queues.h
index 1ec408585373..2270fbb99cf7 100644
--- a/include/net/netdev_queues.h
+++ b/include/net/netdev_queues.h
@@ -89,7 +89,7 @@ struct netdev_stat_ops {
#define netif_txq_try_stop(txq, get_desc, start_thrs) \
({ \
- int _res; \
+ int __res; \
\
netif_tx_stop_queue(txq); \
/* Producer index and stop bit must be visible \
@@ -101,12 +101,12 @@ struct netdev_stat_ops {
/* We need to check again in a case another \
* CPU has just made room available. \
*/ \
- _res = 0; \
+ __res = 0; \
if (unlikely(get_desc >= start_thrs)) { \
netif_tx_start_queue(txq); \
- _res = -1; \
+ __res = -1; \
} \
- _res; \
+ __res; \
}) \
/**
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Date: Fri, 29 Mar 2024 13:53:44 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Alexander Lobakin <aleksander.lobakin@...el.com>
Cc: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
<edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Dmitry Safonov
<0x7f454c46@...il.com>, Heiner Kallweit <hkallweit1@...il.com>,
nex.sw.ncis.osdt.itp.upstreaming@...el.com, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 2/2] netdev_queues: fix -Wshadow / Sparse
shadow warnings throughout the file
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On Fri, 29 Mar 2024 13:18:57 -0700 Jakub Kicinski wrote:
> > Sparse:
> >
> > drivers/net/ethernet/intel/idpf/idpf_txrx.c:1992:16: warning: symbol '_res' shadows an earlier one
> > drivers/net/ethernet/intel/idpf/idpf_txrx.c:1992:16: originally declared here
>
> I don't see these building with LLVM=1 W=12 C=1
> and I really don't like complicating the code because the compiler
> is stupid. Can't you solve this with some renames? Add another
> underscore or something?
I'm stupid I tried on the test branch which already had your fix..
This is enough:
diff --git a/include/net/netdev_queues.h b/include/net/netdev_queues.h
index 1ec408585373..2270fbb99cf7 100644
--- a/include/net/netdev_queues.h
+++ b/include/net/netdev_queues.h
@@ -89,7 +89,7 @@ struct netdev_stat_ops {
#define netif_txq_try_stop(txq, get_desc, start_thrs) \
({ \
- int _res; \
+ int __res; \
\
netif_tx_stop_queue(txq); \
/* Producer index and stop bit must be visible \
@@ -101,12 +101,12 @@ struct netdev_stat_ops {
/* We need to check again in a case another \
* CPU has just made room available. \
*/ \
- _res = 0; \
+ __res = 0; \
if (unlikely(get_desc >= start_thrs)) { \
netif_tx_start_queue(txq); \
- _res = -1; \
+ __res = -1; \
} \
- _res; \
+ __res; \
}) \
/**
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