lkml.org 
[lkml]   [2013]   [Jul]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: [PATCH] irqchip: gic: Don't complain in gic_get_cpumask() if UP system
On 07/17/13 15:53, Nicolas Pitre wrote:
> On Wed, 17 Jul 2013, Stephen Boyd wrote:
>
>> On 07/17/13 15:34, Nicolas Pitre wrote:
>>> On Wed, 17 Jul 2013, Stephen Boyd wrote:
>>>
>>>> On 07/12/13 05:10, Stephen Boyd wrote:
>>>>> On 07/12, Javi Merino wrote:
>>>>>> I agree, we should drop the check. It's annoying in uniprocessors and
>>>>>> unlikely to be found in the real world unless your gic entry in the dt
>>>>>> is wrong.
>>> And that's a likely outcome in the real world.
>>>
>>>>> Ok. How about this?
>>>> Any comments?
>>> What about this instead:
>> Unfortunately arm64 doesn't have SMP_ON_UP.
> And why does that matter?

Because the gic driver is compiled on both arm and arm64? I suppose we
could define is_smp() to 1 on arm64 but its probably better to rely on
generic kernel things instead of arch specific functions.

>
>> It sounds like you preferred the first patch using num_possible_cpus()
> Probably, yes. I didn't follow the early conversation though.

This was the first patch:

---8<----

diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 19ceaa6..589c760 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -368,7 +368,7 @@ static u8 gic_get_cpumask(struct gic_chip_data *gic)
break;
}

- if (!mask)
+ if (!mask && num_possible_cpus() > 1)
pr_crit("GIC CPU mask not found - kernel will fail to boot.\n");

return mask;

--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
hosted by The Linux Foundation



\
 
 \ /
  Last update: 2013-07-18 01:41    [W:0.280 / U:0.024 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site