[dpdk-dev] [RFC 00/23] Refactor eal_init to remove panic() calls

[Aaron Conole]

In many cases, it's enough to simply let the application know that the
call to initialize DPDK has failed.  A complete halt can then be
decided by the application based on error returned (and the app could
even attempt a possible re-attempt after some corrective action by the
user or application).

There is still some work left in this series.

One bit of work left is to take the calls which could reasonably be
corrected (and then init can be re-attempted), and make sure to clear
the already-initialized flag.

Another piece of work is to fix the lcore master/slave errors to
properly reflect thread state.

Finally, some real heavy testing should be done.  The series wasn't
tested much, and could use real soak time.  Especially around some of
the calls where it no longer returns an error (for instance, vdev init
and plugin init).

Aaron Conole (23):
  eal: CPU init will no longer panic
  eal: return error instead of panic for cpu init
  eal: No panic on hugepages info init
  eal: do not panic on failed hugepage query
  eal: failure to parse args returns error
  eal-common: introduce a way to query cpu support
  eal: Signal error when CPU isn't supported
  eal: do not panic on memzone initialization fails
  eal: set errno when exiting for already called
  eal: Do not panic on log failures
  eal: Do not panic on pci-probe
  eal: do not panic on vfio failure
  eal: do not panic on memory init
  eal: do not panic on tailq init
  eal: do not panic on alarm init
  eal: convert timer_init not to call panic
  eal: change the private pipe call to reflect errno
  eal: Do not panic on interrupt thread init
  eal: do not error if plugins fail to init
  eal_pci: Continue probing even on failures
  eal: do not panic on failed PCI probe
  eal_common_dev: continue initializing vdevs
  eal: do not panic (or abort) if vdev init fails

 lib/librte_eal/common/eal_common_cpuflags.c        |  13 ++-
 lib/librte_eal/common/eal_common_dev.c             |   5 +-
 lib/librte_eal/common/eal_common_lcore.c           |   7 +-
 lib/librte_eal/common/eal_common_pci.c             |  15 ++-
 lib/librte_eal/common/eal_common_tailqs.c          |   4 +-
 .../common/include/generic/rte_cpuflags.h          |   9 ++
 lib/librte_eal/linuxapp/eal/eal.c                  | 109 +++++++++++++++------
 lib/librte_eal/linuxapp/eal/eal_hugepage_info.c    |   6 +-
 lib/librte_eal/linuxapp/eal/eal_interrupts.c       |   5 +-
 9 files changed, 125 insertions(+), 48 deletions(-)

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2.7.4