From: Eric Dumazet <eric.dumazet@gmail.com>
To: Saeed Mahameed <saeedm@dev.mellanox.co.il>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>,
David Miller <davem@davemloft.net>,
netdev <netdev@vger.kernel.org>,
Tariq Toukan <tariqt@mellanox.com>
Subject: Re: Regression: [PATCH] mlx4: give precise rx/tx bytes/packets counters
Date: Thu, 01 Dec 2016 09:08:50 -0800 [thread overview]
Message-ID: <1480612130.18162.321.camel@edumazet-glaptop3.roam.corp.google.com> (raw)
In-Reply-To: <CALzJLG_=Z_anekLaiT0giK+RaOGRWmvK6MUP4UWXqsQQysR55w@mail.gmail.com>
On Thu, 2016-12-01 at 18:33 +0200, Saeed Mahameed wrote:
> Thanks for the detailed answer !!
You're welcome.
>
> BTW you went 5 steps ahead of my original question :)), so far you
> already have a patch without locking at all (really impressive).
>
> What i wanted to ask originally, was regarding the "_bh", i didn't
> mean to completely remove the "spin_lock_bh",
> I meant, what happens if we replace "spin_lock_bh" with "spin_lock",
> without disabling bh ?
> I gues raw "sping_lock" handles points (2 to 4) from above, but it
> won't handle long irqs.
Thats a very good point, the _bh prefix can totally be removed, since
stats_lock is only acquired from process context.
next prev parent reply other threads:[~2016-12-01 17:09 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-25 15:46 [PATCH] mlx4: give precise rx/tx bytes/packets counters Eric Dumazet
2016-11-25 16:03 ` David Laight
2016-11-25 16:16 ` Eric Dumazet
2016-11-25 16:30 ` Aw: " Lino Sanfilippo
2016-11-25 19:19 ` Eric Dumazet
2016-11-28 22:02 ` Lino Sanfilippo
2016-11-29 0:19 ` Eric Dumazet
2016-11-30 15:28 ` David Laight
2016-11-30 15:47 ` Eric Dumazet
2016-11-26 22:47 ` Saeed Mahameed
2016-11-27 2:16 ` Eric Dumazet
2016-11-28 20:40 ` David Miller
2016-11-28 21:55 ` Saeed Mahameed
2016-11-28 22:57 ` Eric Dumazet
2016-11-29 18:37 ` David Miller
2016-11-30 14:08 ` Regression: " Jesper Dangaard Brouer
2016-11-30 15:58 ` Eric Dumazet
2016-11-30 16:46 ` Saeed Mahameed
2016-11-30 17:35 ` Eric Dumazet
2016-11-30 20:42 ` Saeed Mahameed
2016-11-30 21:00 ` Eric Dumazet
2016-12-01 12:37 ` Jesper Dangaard Brouer
2016-12-01 13:02 ` [PATCH net-next] mlx4: fix use-after-free in mlx4_en_fold_software_stats() Eric Dumazet
2016-12-01 15:23 ` Saeed Mahameed
2016-12-02 18:36 ` David Miller
2016-12-01 15:38 ` Regression: [PATCH] mlx4: give precise rx/tx bytes/packets counters Saeed Mahameed
2016-12-01 15:55 ` Eric Dumazet
2016-12-01 16:08 ` Eric Dumazet
2016-12-01 17:36 ` Eric Dumazet
2016-12-04 13:23 ` Saeed Mahameed
2016-12-01 16:33 ` Saeed Mahameed
2016-12-01 17:08 ` Eric Dumazet [this message]
2016-12-04 13:21 ` Saeed Mahameed
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