On Tue, Sep 12, 2023 at 03:01:44PM +0800, Chuyi Zhou wrote: > This patch makes some preparations for using css_task_iter_*() in BPF > Program. > > 1. Flags CSS_TASK_ITER_* are #define-s and it's not easy for bpf prog to > use them. Convert them to enum so bpf prog can take them from vmlinux.h. > > 2. In the next patch we will add css_task_iter_*() in common kfuncs which > is not safe. Since css_task_iter_*() does spin_unlock_irq() which might > screw up irq flags depending on the context where bpf prog is running. > So we should use irqsave/irqrestore here and the switching is harmless. > > Signed-off-by: Chuyi Zhou <zhouchuyi@xxxxxxxxxxxxx> Acked-by: Tejun Heo <tj@xxxxxxxxxx> Thanks. -- tejun
