[PATCH v4 0/5] cleanup more stuff on shutdown

[Stephen Hemminger <stephen@networkplumber.org>]

Started using valgrind with DPDK, and there are lots of leftover
memory and file descriptors. This makes it hard to find application
leaks versus DPDK leaks.

The DPDK has a function that applications can use to tell it
to cleanup resources on shutdown (rte_eal_cleanup). But the
current coverage of that API is spotty. Many internal parts of
DPDK leave files and allocated memory behind.

This patch set is a first step at getting the sub-parts of
DPDK to cleanup after themselves. These are the easier ones,
the harder and more critical ones are in the drivers
and the memory subsystem.

There should be no new exposed API or ABI changes here.

v4
 - rebase to 20.11-rc
 - drop one patch (alarm cleanup is implemented)
 - drop patch that ends worker threads on cleanup.
   the test is calling rte_exit/eal_cleanup in a forked process.
   (could argue this is a test bug)!

v3
 - fix a couple of minor checkpatch complaints

v2
 - rebase after 20.05 file renames
 - incorporate review comment feedback
 - hold off some of the more involved patches for later

Stephen Hemminger (5):
  eal: close log in eal_cleanup
  eal: mp: end the multiprocess thread during cleanup
  eal: vfio: cleanup the mp sync handle
  eal: hotplug: cleanup multiprocess resources
  eal: malloc: cleanup mp resources

 lib/eal/common/eal_common_log.c  | 13 +++++++++++++
 lib/eal/common/eal_common_proc.c | 20 +++++++++++++++++---
 lib/eal/common/eal_private.h     |  7 +++++++
 lib/eal/common/hotplug_mp.c      |  5 +++++
 lib/eal/common/hotplug_mp.h      |  6 ++++++
 lib/eal/common/malloc_heap.c     |  6 ++++++
 lib/eal/common/malloc_heap.h     |  3 +++
 lib/eal/common/malloc_mp.c       | 12 ++++++++++++
 lib/eal/common/malloc_mp.h       |  3 +++
 lib/eal/linux/eal.c              |  7 +++++++
 lib/eal/linux/eal_log.c          |  8 ++++++++
 lib/eal/linux/eal_vfio.h         |  1 +
 lib/eal/linux/eal_vfio_mp_sync.c |  8 ++++++++
 13 files changed, 96 insertions(+), 3 deletions(-)

-- 
2.30.2