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Date: Mon, 10 Jan 2022 10:14:54 -0500 From: Steven Rostedt <rostedt@...dmis.org> To: Xiu Jianfeng <xiujianfeng@...wei.com> Cc: <mingo@...hat.com>, <peterz@...radead.org>, <juri.lelli@...hat.com>, <vincent.guittot@...aro.org>, <dietmar.eggemann@....com>, <bsegall@...gle.com>, <mgorman@...e.de>, <bristot@...hat.com>, <gustavoars@...nel.org>, <linux-kernel@...r.kernel.org>, <linux-hardening@...r.kernel.org> Subject: Re: [PATCH -next, v2] sched: Use struct_size() helper in task_numa_group() On Mon, 10 Jan 2022 09:23:54 +0800 Xiu Jianfeng <xiujianfeng@...wei.com> wrote: > Make use of struct_size() helper instead of an open-coded calculation. > There is no functional change in this patch. Reviewed-by: Steven Rostedt <rostedt@...dmis.org> -- Steve > > Link: https://github.com/KSPP/linux/issues/160 > Signed-off-by: Xiu Jianfeng <xiujianfeng@...wei.com> > --- > kernel/sched/fair.c | 5 ++--- > 1 file changed, 2 insertions(+), 3 deletions(-) > > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c > index 095b0aa378df..af933a7f9e5d 100644 > --- a/kernel/sched/fair.c > +++ b/kernel/sched/fair.c > @@ -2437,9 +2437,8 @@ static void task_numa_group(struct task_struct *p, int cpupid, int flags, > int i; > > if (unlikely(!deref_curr_numa_group(p))) { > - unsigned int size = sizeof(struct numa_group) + > - NR_NUMA_HINT_FAULT_STATS * > - nr_node_ids * sizeof(unsigned long); > + unsigned int size = struct_size(grp, faults, > + NR_NUMA_HINT_FAULT_STATS * nr_node_ids); > > grp = kzalloc(size, GFP_KERNEL | __GFP_NOWARN); > if (!grp)
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