From: Johannes Berg <johannes@sipsolutions.net>
To: Anton Ivanov <anton.ivanov@kot-begemot.co.uk>,
linux-um@lists.infradead.org
Subject: Re: [PATCH 0/7 um: IRQ handling cleanups
Date: Tue, 24 Nov 2020 09:58:55 +0100 [thread overview]
Message-ID: <293beb66b8293056a1a34ca1bc3b78900bb4d638.camel@sipsolutions.net> (raw)
In-Reply-To: <d7b1ec1bbb6995e801c3e7c54c7bb88dcffc54db.camel@sipsolutions.net>
On Tue, 2020-11-24 at 09:55 +0100, Johannes Berg wrote:
>
> > I have tried some of what you did when working on timers/epoll -
> > namely turning off the HZ-like nanosleep in time.c. I could not get it
> > to work at the time. So I dropped it from the final version of the
> > patches.
>
> That one's just weird ... and unnecessary. I can't see why it could
> possibly matter.
Or actually ... wait? I thought you were referring to "um: simplify
os_idle_sleep() and sleep longer" but that's not in this set now...
Anyway, if you were indeed referring to that patch, it's not strictly
needed - removing it would just mean I couldn't call os_idle_sleep() for
suspend but would have to add os_suspend() or something. OTOH, it didn't
break anything for me (neither time-travel nor normal mode), and I can't
see how it was necessary since if clock_nanosleep() (or now select())
was interrupted by a signal and returned, the signal handler ran too...
johannes
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next prev parent reply other threads:[~2020-11-24 8:58 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-23 19:56 [PATCH 0/7 um: IRQ handling cleanups Johannes Berg
2020-11-23 19:56 ` [PATCH 1/7] um: support dynamic IRQ allocation Johannes Berg
2020-11-30 11:26 ` Anton Ivanov
2020-11-23 19:56 ` [PATCH 2/7] um: virtio: use " Johannes Berg
2020-11-30 13:45 ` Anton Ivanov
2020-11-23 19:56 ` [PATCH 3/7] um: clean up alarm IRQ chip name Johannes Berg
2020-11-30 13:54 ` Anton Ivanov
2020-11-23 19:56 ` [PATCH 4/7] um: irq: clean up and rename struct irq_fd Johannes Berg
2020-11-30 14:01 ` Anton Ivanov
2020-11-23 19:56 ` [PATCH 5/7] um: irq: reduce irq_reg allocation Johannes Berg
2020-11-23 19:56 ` [PATCH 6/7] um: remove IRQ_NONE type Johannes Berg
2020-11-30 14:31 ` Anton Ivanov
2020-11-23 19:56 ` [PATCH 7/7] um: simplify IRQ handling code Johannes Berg
2020-11-24 21:50 ` Anton Ivanov
2020-11-24 21:58 ` Johannes Berg
2020-11-24 22:36 ` Anton Ivanov
2020-11-30 12:00 ` Johannes Berg
2020-11-30 13:40 ` Anton Ivanov
2020-11-30 16:30 ` Anton Ivanov
2020-12-01 20:15 ` Johannes Berg
2020-12-02 9:03 ` Anton Ivanov
2020-12-02 11:29 ` Johannes Berg
2020-12-02 11:31 ` Anton Ivanov
2020-12-02 11:32 ` Johannes Berg
2020-12-02 11:56 ` Anton Ivanov
2020-12-02 11:58 ` Johannes Berg
2020-12-02 11:43 ` Johannes Berg
2020-12-02 11:49 ` Johannes Berg
2020-12-02 11:54 ` Johannes Berg
2020-12-02 11:58 ` Anton Ivanov
2020-11-24 8:14 ` [PATCH 0/7 um: IRQ handling cleanups Anton Ivanov
2020-11-24 8:55 ` Johannes Berg
2020-11-24 8:58 ` Johannes Berg [this message]
2020-11-24 9:06 ` Anton Ivanov
2020-11-24 16:34 ` Anton Ivanov
2020-11-24 16:39 ` Johannes Berg
2020-11-24 16:42 ` Anton Ivanov
2020-11-24 16:45 ` Anton Ivanov
2020-11-24 16:46 ` Johannes Berg
2020-11-24 17:07 ` Anton Ivanov
2020-11-24 18:32 ` Johannes Berg
2020-11-24 21:11 ` Johannes Berg
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