2018-09-07 16:24:08

by jun qian

[permalink] [raw]
Subject: [PATCH] ethernet:netronome:nfp:move spin_lock_bh to spin_lock in tasklet

As you are already in a tasklet, it is unnecessary to call spin_lock_bh.

Signed-off-by: jun qian <[email protected]>
---
drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index a8b9fbab5f73..084c983ec3c2 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -2075,10 +2075,10 @@ static void nfp_ctrl_poll(unsigned long arg)
{
struct nfp_net_r_vector *r_vec = (void *)arg;

- spin_lock_bh(&r_vec->lock);
+ spin_lock(&r_vec->lock);
nfp_net_tx_complete(r_vec->tx_ring, 0);
__nfp_ctrl_tx_queued(r_vec);
- spin_unlock_bh(&r_vec->lock);
+ spin_unlock(&r_vec->lock);

nfp_ctrl_rx(r_vec);

--
2.17.1





2018-09-07 16:37:06

by Jakub Kicinski

[permalink] [raw]
Subject: Re: [PATCH] ethernet:netronome:nfp:move spin_lock_bh to spin_lock in tasklet

On Fri, 7 Sep 2018 09:21:17 -0700, jun qian wrote:
> As you are already in a tasklet, it is unnecessary to call spin_lock_bh.
>
> Signed-off-by: jun qian <[email protected]>

We had more of those at some point, I wonder if you(r tool) can find
them :)

Acked-by: Jakub Kicinski <[email protected]>

2018-09-07 16:38:13

by Jakub Kicinski

[permalink] [raw]
Subject: Re: [PATCH] ethernet:netronome:nfp:move spin_lock_bh to spin_lock in tasklet

On Fri, 7 Sep 2018 09:21:17 -0700, jun qian wrote:
> As you are already in a tasklet, it is unnecessary to call spin_lock_bh.
>
> Signed-off-by: jun qian <[email protected]>

FWIW you should put spaces after the colons. It's generally a good
practice to look at the prefix previous authors used for a given piece
of code with

git log -- $file_path

This would be a better subject:

nfp: replace spin_lock_bh with spin_lock in tasklet callback

2018-09-07 17:37:15

by David Miller

[permalink] [raw]
Subject: Re: [PATCH] ethernet:netronome:nfp:move spin_lock_bh to spin_lock in tasklet

From: Jakub Kicinski <[email protected]>
Date: Fri, 7 Sep 2018 18:36:36 +0200

> On Fri, 7 Sep 2018 09:21:17 -0700, jun qian wrote:
>> As you are already in a tasklet, it is unnecessary to call spin_lock_bh.
>>
>> Signed-off-by: jun qian <[email protected]>
>
> FWIW you should put spaces after the colons. It's generally a good
> practice to look at the prefix previous authors used for a given piece
> of code with
>
> git log -- $file_path
>
> This would be a better subject:
>
> nfp: replace spin_lock_bh with spin_lock in tasklet callback

Yes, please fix your subject styling.