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From: Tony Lindgren <tony@atomide.com>
To: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>,
	linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH RFC] ARM: omap2: fix lack of timer interrupts on CPU1 after hotplug
Date: Wed, 12 Dec 2018 10:57:41 -0800	[thread overview]
Message-ID: <20181212185741.GJ6707@atomide.com> (raw)
In-Reply-To: <20181212175332.GI6707@atomide.com>

* Tony Lindgren <tony@atomide.com> [181212 17:53]:
> * Russell King <rmk+kernel@armlinux.org.uk> [181212 11:49]:
> > We call tick_broadcast_enter() in omap_enter_idle_coupled(), which one
> > would expect would take care of the issue, but internally this only
> > deals with one-shot local timers - tick_broadcast_enable() on the other
> > hand only deals with periodic local timers.  So, we need to call both.
> 
> This works just fine for me for NO_HZ and cpuidle:
>
> Tested-by: Tony Lindgren <tony@atomide.com>

And also works for me without NO_HZ too FYI.

Tony

WARNING: multiple messages have this Message-ID (diff)
From: Tony Lindgren <tony@atomide.com>
To: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>,
	linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH RFC] ARM: omap2: fix lack of timer interrupts on CPU1 after hotplug
Date: Wed, 12 Dec 2018 10:57:41 -0800	[thread overview]
Message-ID: <20181212185741.GJ6707@atomide.com> (raw)
In-Reply-To: <20181212175332.GI6707@atomide.com>

* Tony Lindgren <tony@atomide.com> [181212 17:53]:
> * Russell King <rmk+kernel@armlinux.org.uk> [181212 11:49]:
> > We call tick_broadcast_enter() in omap_enter_idle_coupled(), which one
> > would expect would take care of the issue, but internally this only
> > deals with one-shot local timers - tick_broadcast_enable() on the other
> > hand only deals with periodic local timers.  So, we need to call both.
> 
> This works just fine for me for NO_HZ and cpuidle:
>
> Tested-by: Tony Lindgren <tony@atomide.com>

And also works for me without NO_HZ too FYI.

Tony

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  reply	other threads:[~2018-12-12 18:57 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-12 11:49 [PATCH RFC] ARM: omap2: fix lack of timer interrupts on CPU1 after hotplug Russell King
2018-12-12 11:49 ` Russell King
2018-12-12 17:53 ` Tony Lindgren
2018-12-12 17:53   ` Tony Lindgren
2018-12-12 18:57   ` Tony Lindgren [this message]
2018-12-12 18:57     ` Tony Lindgren
2019-02-07 13:45     ` Russell King - ARM Linux admin
2019-02-07 13:45       ` Russell King - ARM Linux admin
2019-02-07 15:51       ` Tony Lindgren
2019-02-07 15:51         ` Tony Lindgren

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