mbox series

[v3,0/7] support reinit flow

Message ID 20230815035239.1365591-1-okaya@kernel.org (mailing list archive)
Headers
Series support reinit flow |

Message

Sinan Kaya Aug. 15, 2023, 3:52 a.m. UTC 
  From: Sinan Kaya <okaya@kernel.org>

We want to be able to call rte_eal_init() and rte_eal_cleanup()
APIs back to back for maintanance reasons.

Here is a summary of the code we have seen so far:

1. some code support getting called multiple times by keeping
a static variable.
2. some code initializes once but never clean up after them and
don't have a cleanup API.
3. some code assumes that they only get called once during the
lifecycle of the process.

Most changes in this patch center around following the #1 design
principle.

Why?

It is not always ideal to reinitialize a DPDK process. Memory needs
to be reinitialized, hugetables need to warm up etc.

Changed from

v1:
Fix checkpatch warnings

v2:
rebase to most recent DPDK.

Graham Whyte (1):
  eal: fixes for re-initialization issues

Sinan Kaya (6):
  tailq: skip init if already initialized
  eal_memzone: bail out on initialized
  memseg: init once
  eal_memory: skip initialization
  eal_interrupts: don't reinitialize threads
  eal: initialize worker threads once

 lib/eal/common/eal_common_memory.c  |  5 +++
 lib/eal/common/eal_common_memzone.c |  7 ++++
 lib/eal/common/eal_common_options.c |  7 ++++
 lib/eal/common/eal_common_tailqs.c  | 20 +++++----
 lib/eal/common/malloc_heap.c        |  7 ++++
 lib/eal/linux/eal.c                 | 64 ++++++++++++++++-------------
 lib/eal/linux/eal_interrupts.c      |  7 ++++
 lib/eal/linux/eal_memory.c          | 12 +++++-
 8 files changed, 92 insertions(+), 37 deletions(-)