From: Denys Vlasenko <dvlasenk@xxxxxxxxxx> Date: Mon, 11 May 2015 21:17:53 +0200 > These functions compile to 60 bytes of machine code each. > With this .config: http://busybox.net/~vda/kernel_config > there are 617 calls of netif_tx_stop_queue() > and 49 calls of netif_tx_stop_all_queues() in vmlinux. > > To fix this, remove WARN_ON in netif_tx_stop_queue() > as suggested by davem, and deinline netif_tx_stop_all_queues(). > > Change in code size is about 20k: > > text data bss dec hex filename > 82426986 22255416 20627456 125309858 77813a2 vmlinux.before > 82406248 22255416 20627456 125289120 777c2a0 vmlinux > > gcc-4.7.2 still creates deinlined version of netif_tx_stop_queue > sometimes: > > $ nm --size-sort vmlinux | grep netif_tx_stop_queue | wc -l > 190 > > ffffffff81b558a8 <netif_tx_stop_queue>: > ffffffff81b558a8: 55 push %rbp > ffffffff81b558a9: 48 89 e5 mov %rsp,%rbp > ffffffff81b558ac: f0 80 8f e0 01 00 00 lock orb $0x1,0x1e0(%rdi) > ffffffff81b558b3: 01 > ffffffff81b558b4: 5d pop %rbp > ffffffff81b558b5: c3 retq > > This needs additional fixing. > > Signed-off-by: Denys Vlasenko <dvlasenk@xxxxxxxxxx> Applied, thank you. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
