On 08-Mar-18 12:12 PM, Bruce Richardson wrote:
On Wed, Feb 07, 2018 at 09:58:36AM +0000, Anatoly Burakov wrote:
During lcore scan, find maximum socket ID and store it. This will
break the ABI, so bump ABI version.

Signed-off-by: Anatoly Burakov <anatoly.bura...@intel.com>
---

Notes:
     v4:
     - Remove backwards ABI compatibility, bump ABI instead
v3:
     - Added ABI compatibility
v2:
     - checkpatch changes
     - check socket before deciding if the core is not to be used

  lib/librte_eal/bsdapp/eal/Makefile        |  2 +-
  lib/librte_eal/common/eal_common_lcore.c  | 37 +++++++++++++++++++++----------
  lib/librte_eal/common/include/rte_eal.h   |  1 +
  lib/librte_eal/common/include/rte_lcore.h |  8 +++++++
  lib/librte_eal/linuxapp/eal/Makefile      |  2 +-
  lib/librte_eal/rte_eal_version.map        |  9 +++++++-
  6 files changed, 44 insertions(+), 15 deletions(-)

Breaking the ABI is the best way to implement this change, and given the
deprecation was previously announced I'm ok with that.

Question: we are ok assuming that the socket numbers are sequential, or
nearly so, and knowing the maximum socket number seen is a good
approximation of the actual physical sockets? I know in terms of cores
on a system, the core id's often jump - are there systems where the
socket numbers do too?

/Bruce


I am not aware of any system that would jump sockets like that. I'm open to corrections, however :)

--
Thanks,
Anatoly

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