On Tue, Oct 8, 2024 at 6:49 PM Stephen Hemminger <step...@networkplumber.org> wrote: > > Recent versions of GCC have some additional function attributes that can > help with DPDK performance and stability. > > The alloc_align attribute tells the compiler what the alignment > of the allocation will be, and the optimizer can use this to produce > better code (especially memcpy and structure copies). > > The malloc attribute tells compiler that object is not overlapping > and potentially aliasing. It also as an additional variant in GCC 11 > or later that allows for detecting all sorts of common errors like > calling free() on memory allocated with rte_malloc(). > > In order to use the malloc attribute the free function prototype > needs to be moved before the allocator/create function prototype > so that the malloc attribute can refer to it. > > This uncovered at least 16 pre-existing bugs in DPDK, these > should go to stable. This patch set is structured with: > - fix any new warnings that were discovered > - add macros for enable the macros > - enable the attributes > > The same attributes could be added to lots more functions in DPDK, > but this patch set focuses on the key ones, and where problems > exist in current code base.
Series applied. Thanks Stephen. -- David Marchand
