Hey everyone, This is v2 of "netns: uevent performance tweaks" which contains *no functional changes* just a minor indendation fix as requested by David.
Like Eric requested, I did extensive testing that prove significant performance improvements when using per-netns uevent sequence numbers with decoupled locks. The results and test descriptions were added to the commit message of [PATCH 2/2 v1] netns: isolate seqnums to use per-netns locks. This series deals with a bunch of performance improvements when sending out uevents that have been extensively discussed here: https://lkml.org/lkml/2018/4/10/592 - Only record uevent sockets from network namespaces owned by the initial user namespace in the global uevent socket list. Eric, this is the exact patch we agreed upon in https://lkml.org/lkml/2018/4/10/592. A very detailed rationale is present in the commit message for [PATCH 1/2] netns: restrict uevents - Decouple the locking for network namespaces in the global uevent socket list from the locking for network namespaces not in the global uevent socket list. A very detailed rationale including performance test results is present in the commit message for [PATCH 2/2] netns: isolate seqnums to use per-netns locks Thanks! Christian Christian Brauner (2): netns: restrict uevents netns: isolate seqnums to use per-netns locks include/linux/kobject.h | 2 + include/net/net_namespace.h | 3 + kernel/ksysfs.c | 11 +++- lib/kobject_uevent.c | 122 ++++++++++++++++++++++++++++-------- net/core/net_namespace.c | 14 +++++ 5 files changed, 126 insertions(+), 26 deletions(-) -- 2.17.0