Is there an skb_alloc function that can be used from interrupt handler? Looks like netdev_alloc_skb() can't be used since I see following trace with kernel hack debug options enabled.
[ 652.481713] [<c021007c>] (unwind_backtrace) from [<c020bdcc>] (show_stack+0x10/0x14) [ 652.481725] [<c020bdcc>] (show_stack) from [<c0517780>] (dump_stack+0x98/0xc4) [ 652.481736] [<c0517780>] (dump_stack) from [<c0256a70>] (___might_sleep+0x1b8/0x2a4) [ 652.481746] [<c0256a70>] (___might_sleep) from [<c0939e80>] (rt_spin_lock+0x24/0x5c) [ 652.481755] [<c0939e80>] (rt_spin_lock) from [<c07d827c>] (__netdev_alloc_skb+0xd0/0x254) [ 652.481774] [<c07d827c>] (__netdev_alloc_skb) from [<bf23a544>] (emac_rx_hardirq+0x374/0x554 [prueth]) [ 652.481793] [<bf23a544>] (emac_rx_hardirq [prueth]) from [<c02925dc>] (__handle_irq_event_percpu+0x9c/0x128) This is running under RT kernel off 4.9.y -- Murali Karicheri Linux Kernel, Keystone
