Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1227139

Re: [PATCH] workqueue: Free useless memory when disabling NUMA in wq_numa_init()

Show all headers | View raw

Hello,

On Thu, Sep 17, 2015 at 10:43:55AM +0800, Xunlei Pang wrote:
> From: Xunlei Pang <pang.xunlei@zte.com.cn>
> 
> wq_update_unbound_numa_attrs_buf and tbl will never be used
> in case of invalid NUMA node mapping, so just free them.
> 
> Signed-off-by: Xunlei Pang <pang.xunlei@zte.com.cn>
> ---
>  kernel/workqueue.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/kernel/workqueue.c b/kernel/workqueue.c
> index ca71582..22d7747 100644
> --- a/kernel/workqueue.c
> +++ b/kernel/workqueue.c
> @@ -5197,6 +5197,13 @@ static void __init wq_numa_init(void)
>  		node = cpu_to_node(cpu);
>  		if (WARN_ON(node == NUMA_NO_NODE)) {
>  			pr_warn("workqueue: NUMA node mapping not available for cpu%d, disabling NUMA support\n", cpu);
> +
> +			for_each_node(node)
> +				free_cpumask_var(tbl[node]);
> +			kfree(tbl);

So, this is "either bios or arch code buggy but let's keep limping on
rather than crashing" path.  It doesn't matter whether there's
something lingering behind.  We wanna keep it as simple as possible.

Thanks.

-- 
tejun
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

[PATCH] workqueue: Free useless memory when disabling NUMA in wq_numa_init() Xunlei Pang <xlpang@126.com> - 2015-09-17 04:50 +0200
  Re: [PATCH] workqueue: Free useless memory when disabling NUMA in  wq_numa_init() Tejun Heo <tj@kernel.org> - 2015-09-17 17:40 +0200

csiph-web