Re: PROBLEM: BUG appearing when trying to allocate interrupt on Exynos MCT after CPU hotplug

2015-02-02 Thread Marcin Jabrzyk
On 31/01/15 10:21, Daniel Lezcano wrote: On 01/31/2015 02:08 AM, Stephen Boyd wrote: Kept meaning to get back to this thread. Have you resolved it? On 10/29/14 03:38, Marcin Jabrzyk wrote: So I've tried this patch, it resolves one problem but introduces also new ones. As expected the BUG war

Re: PROBLEM: BUG appearing when trying to allocate interrupt on Exynos MCT after CPU hotplug

2015-01-31 Thread Daniel Lezcano
On 01/31/2015 02:08 AM, Stephen Boyd wrote: Kept meaning to get back to this thread. Have you resolved it? On 10/29/14 03:38, Marcin Jabrzyk wrote: So I've tried this patch, it resolves one problem but introduces also new ones. As expected the BUG warning is not showing after applying this patc

Re: PROBLEM: BUG appearing when trying to allocate interrupt on Exynos MCT after CPU hotplug

2015-01-30 Thread Stephen Boyd
Kept meaning to get back to this thread. Have you resolved it? On 10/29/14 03:38, Marcin Jabrzyk wrote: > So I've tried this patch, it resolves one problem but introduces also > new ones. As expected the BUG warning is not showing after applying > this patch but there are some interesting side eff

Re: PROBLEM: BUG appearing when trying to allocate interrupt on Exynos MCT after CPU hotplug

2014-10-29 Thread Marcin Jabrzyk
So I've tried this patch, it resolves one problem but introduces also new ones. As expected the BUG warning is not showing after applying this patch but there are some interesting side effects. I was looking on /proc/interrupts output. IRQ for CPU0 have "MCT" name and IRQ for CPU1 has unexpected

Re: PROBLEM: BUG appearing when trying to allocate interrupt on Exynos MCT after CPU hotplug

2014-10-27 Thread Stephen Boyd
On 10/24/2014 06:22 AM, Marcin Jabrzyk wrote: > > > On 23/10/14 20:41, Stephen Boyd wrote: >> On 10/23/2014 07:06 AM, Russell King - ARM Linux wrote: >>> The CPU notifier is called via notify_cpu_starting(), which is called >>> with interrupts disabled, and a reason code of CPU_STARTING. >>> Inter

Re: PROBLEM: BUG appearing when trying to allocate interrupt on Exynos MCT after CPU hotplug

2014-10-24 Thread Marcin Jabrzyk
On 23/10/14 20:41, Stephen Boyd wrote: On 10/23/2014 07:06 AM, Russell King - ARM Linux wrote: On Thu, Oct 23, 2014 at 03:51:16PM +0200, Marcin Jabrzyk wrote: [1.] One line summary of the problem: "BUG: sleeping function called from invalid context at mm/slub.c:1250" after CPU hotplug I'm re

Re: PROBLEM: BUG appearing when trying to allocate interrupt on Exynos MCT after CPU hotplug

2014-10-23 Thread Stephen Boyd
On 10/23/2014 07:06 AM, Russell King - ARM Linux wrote: > On Thu, Oct 23, 2014 at 03:51:16PM +0200, Marcin Jabrzyk wrote: >> [1.] One line summary of the problem: "BUG: sleeping function called from >> invalid context at mm/slub.c:1250" after CPU hotplug > I'm really not surprised. > >> When SoC ha

Re: PROBLEM: BUG appearing when trying to allocate interrupt on Exynos MCT after CPU hotplug

2014-10-23 Thread Russell King - ARM Linux
On Thu, Oct 23, 2014 at 03:51:16PM +0200, Marcin Jabrzyk wrote: > [1.] One line summary of the problem: "BUG: sleeping function called from > invalid context at mm/slub.c:1250" after CPU hotplug I'm really not surprised. > When SoC have MCT_INT_SPI interrupt it is being allocated after hotpluggin

PROBLEM: BUG appearing when trying to allocate interrupt on Exynos MCT after CPU hotplug

2014-10-23 Thread Marcin Jabrzyk
[1.] One line summary of the problem: "BUG: sleeping function called from invalid context at mm/slub.c:1250" after CPU hotplug [2.] Full description of the problem/report: This was tested on Exynos 3250 board with https://lkml.org/lkml/2014/9/24/441 applied. Board is booting to /bin/sh. After