lkml.org 
[lkml]   [2017]   [Dec]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH V2] hyper-v: use GFP_KERNEL for hv_context.hv_numa_map
From
Date

On 2017/12/19 1:05, Stephen Hemminger wrote:
> On Mon, 18 Dec 2017 17:02:52 +0800
> Jia-Ju Bai <baijiaju1990@gmail.com> wrote:
>
>> The kzalloc function is called with GFP_ATOMIC.
>> But according to driver call graph, it is not in atomic context,
>> namely no spinlock is held nor in an interrupt handler.
>>
>> This GFP_ATOMIC is unnecessary, and replace with GFP_KERNEL.
>>
>> Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
>> ---
>> drivers/hv/hv.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
>> index 8267439..b0d025a 100644
>> --- a/drivers/hv/hv.c
>> +++ b/drivers/hv/hv.c
>> @@ -150,7 +150,7 @@ int hv_synic_alloc(void)
>> int cpu;
>>
>> hv_context.hv_numa_map = kzalloc(sizeof(struct cpumask) * nr_node_ids,
>> - GFP_ATOMIC);
>> + GFP_KERNEL);
>> if (hv_context.hv_numa_map == NULL) {
>> pr_err("Unable to allocate NUMA map\n");
>> goto err;
> Thanks, for fixing this.
> While you are at it; wouldn't it make sense to use kcalloc here?

I think kcalloc can be used here.


Thanks,
Jia-Ju Bai

\
 
 \ /
  Last update: 2017-12-19 09:41    [W:0.080 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site