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From: kuznet@ms2.inr.ac.ru
To: davem@redhat.com (David S. Miller)
Cc: andrea@suse.de, linux-kernel@vger.kernel.org
Subject: Re: 2.4.7 softirq incorrectness.
Date: Fri, 27 Jul 2001 21:01:48 +0400 (MSK DST)	[thread overview]
Message-ID: <200107271701.VAA19367@ms2.inr.ac.ru> (raw)
In-Reply-To: <15201.13760.734675.989919@pizda.ninka.net> from "David S. Miller" at Jul 27, 1 02:34:56 am

Hello!

> Do you mean "user context" when you say normal? 

Why "user" then? :-)

Well, after some digging in brains I find that I use home-made terminology.
non-interrupt/non-bh context is called "process context" here. :-)
"Normal context" is process context with enabled BHs and irqs.


> The reason I pushed to have netif_FOO use __cpu_raise_softirq() was
> that I felt sick to my stomache when I saw a new whole function call
> added to that spot. 

I experience even more unpleasant feelings, when thinking what would happen
if netif_rx() without these __ is called from under irq protected spinlock.

> Let us just fix the odd places that aren't calling things in the
> correct environment.

I caught you! :-) Each "context" is normal, but "environment" still can
be wrong. 

Yes, I agreed. It is the simplest solution. In any case, all the instances
of netif_rx are to be checked for spinlock-safeness.

Alexey

      reply	other threads:[~2001-07-27 17:02 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-07-22 20:44 Rusty Russell
2001-07-22 23:34 ` Andrea Arcangeli
2001-07-23  9:06   ` Rusty Russell
2001-07-23 14:29     ` Andrea Arcangeli
2001-07-24  9:35       ` Rusty Russell
2001-07-25 19:33         ` Andrea Arcangeli
2001-07-26 20:26           ` Rusty Russell
2001-07-23  9:25   ` Kai Germaschewski
2001-07-23 11:12     ` Jeff Garzik
2001-07-23 14:18     ` Andrea Arcangeli
2001-07-23 12:05   ` David S. Miller
2001-07-23 14:31     ` Andrea Arcangeli
2001-07-23 22:24   ` Alexey Kuznetsov
2001-07-25 22:23     ` Andrea Arcangeli
2001-07-26 17:46       ` kuznet
2001-07-26 18:03         ` Jeff Garzik
2001-07-26 18:29         ` Andrea Arcangeli
2001-07-27 16:48           ` kuznet
2001-07-27 18:31           ` Maksim Krasnyanskiy
2001-07-27 18:59             ` kuznet
2001-07-27 19:21             ` Maksim Krasnyanskiy
2001-07-27 19:35               ` kuznet
2001-07-28  0:52               ` [PATCH] [IMPORTANT] " Maksim Krasnyanskiy
2001-07-28 17:41                 ` kuznet
2001-07-28 18:02                   ` Andrea Arcangeli
2001-07-28 19:02                     ` kuznet
2001-07-28 19:32                       ` Andrea Arcangeli
2001-07-28 23:28                         ` Alexey Kuznetsov
2001-07-29 17:07                           ` Linus Torvalds
2001-07-29 17:52                             ` kuznet
2001-07-30 18:50                               ` Ingo Molnar
2001-07-30 22:47                                 ` Nigel Gamble
2001-07-30 22:56                                   ` Christoph Hellwig
2001-07-31 18:08                                 ` kuznet
2001-07-28 17:54                 ` Andrea Arcangeli
2001-07-28 19:17                   ` Andrea Arcangeli
2001-07-30 18:32                 ` Maksim Krasnyanskiy
2001-07-27  0:47       ` Maksim Krasnyanskiy
2001-07-27 15:01         ` Andrea Arcangeli
2001-07-27  9:34       ` David S. Miller
2001-07-27 17:01         ` kuznet [this message]

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