On Thu, 29 Feb 2024 11:08:58 -0800 Kees Cook wrote: > > And some seem to be cargo-culted from out-of-tree code and are unused :S > > Ah, which can I remove? The one in igc.h does not seem to be referenced by anything in the igc directory. Pretty sure it's unused. > As a further aside, this code: > > struct net_device *dev; > ... > struct net_device *p; > ... > /* ensure 32-byte alignment of whole construct */ > alloc_size += NETDEV_ALIGN - 1; > p = kvzalloc(alloc_size, GFP_KERNEL_ACCOUNT | __GFP_RETRY_MAYFAIL); > ... > dev = PTR_ALIGN(p, NETDEV_ALIGN); > > Really screams for a dynamic-sized (bucketed) kmem_cache_alloc > API. Alignment constraints can be described in a regular kmem_cache > allocator (rather than this open-coded version). I've been intending to > build that for struct msg_msg for a while now, and here's another user. :) TBH I'm not sure why we align it :S NETDEV_ALIGN is 32B so maybe some old cache aligning thing?
