On 1/20/2016 9:26 PM, Harry van Haaren wrote: > This patch adds a new function to the EAL API: > int rte_eal_primary_proc_alive(const char *path); > > The function indicates if a primary process is alive right now. > This functionality is implemented by testing for a write- > lock on the config file, and the function tests for a lock. > > The use case for this functionality is that a secondary > process can wait until a primary process starts by polling > the function and waiting. When the primary is running, the > secondary continues to poll to detect if the primary process > has quit unexpectedly, the secondary process can detect this. > > The RTE_MAGIC number is written to the shared config by the > primary process, this is the signal to the secondary process > that the EAL is set up, and ready to be used. The function > rte_eal_mcfg_complete() writes RTE_MAGIC. This has been > delayed in the EAL init proceedure, as the PCI probing in > the primary process can interfere with the secondary running. > > Signed-off-by: Harry van Haaren <harry.van.haaren at intel.com> > ---
one question: As we could start up many primaries, how does your secondary process work with them? Thanks, Michael
