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| author |   Yan Zhai <yan@cloudflare.com> | 2024-03-19 13:44:34 -0700 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2024-03-20 21:05:42 -0700 |
| commit | 1a77557d48cff187a169c2aec01c0dd78a5e7e50 (patch) | |
| tree | 3546b847341ff48d74295d8b06f1517e851ba715 /net/core/dev.c | |
| parent | ionic: update documentation for XDP support (diff) | |
| download | wireguard-linux-1a77557d48cff187a169c2aec01c0dd78a5e7e50.tar.xz wireguard-linux-1a77557d48cff187a169c2aec01c0dd78a5e7e50.zip | |
rcu: add a helper to report consolidated flavor QS
When under heavy load, network processing can run CPU-bound for many
tens of seconds. Even in preemptible kernels (non-RT kernel), this can
block RCU Tasks grace periods, which can cause trace-event removal to
take more than a minute, which is unacceptably long.
This commit therefore creates a new helper function that passes through
both RCU and RCU-Tasks quiescent states every 100 milliseconds. This
hard-coded value suffices for current workloads.
Suggested-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Jesper Dangaard Brouer <hawk@kernel.org>
Signed-off-by: Yan Zhai <yan@cloudflare.com>
Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Acked-by: Jesper Dangaard Brouer <hawk@kernel.org>
Link: https://lore.kernel.org/r/90431d46ee112d2b0af04dbfe936faaca11810a5.1710877680.git.yan@cloudflare.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions